00491+5749 STF 60 AD

Coord 2000	00491+5749		Discov num	STF  60		Comp	AD		Coord arcsec 2000	00 49 06.29 +57 48 54.7
Date first	1912		Date last	2011		Obs	7
Pa first	34		Pa last	354		P.A. Now (θ)	354°
Sep first	159.8		Sep last	189.44		Sep. Now (ρ)	189.44"
Mag pri	3.52		Mag sec	12.80		delta mag (ΔM)	9.28		Spectral class	G0V (yellow)
Pri motion ra	+109		Sec motion ra	+000
Pri motion dec	-056		Sec motion dec	+000
Notes	N L P (See Notes, Linear solution, 100-year proper motion)

rPM=1 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		21732	00 49 06 +57 48 55	STF 60 Aa,Ab	2015	2	134	5.1	3.52
Show	Achird	21732	00 49 06 +57 48 55	STF 60 AB	2023	1087	328	13.5	3.52	7.36	3.84	Y
Show		21732	00 49 06 +57 48 55	STF 60 AC	2000	4	260	225.0	3.52	11.40	7.88
Show		21732	00 49 06 +57 48 55	STF 60 AD	2011	7	354	189.4	3.52	12.80	9.28		<===
Show		21732	00 49 06 +57 48 55	STF 60 AE	2023	25	126	66.0	3.52	10.15	6.63
Show		21732	00 49 06 +57 48 55	STF 60 AF	2000	3	276	378.3	3.52	11.53	8.01
Show		21732	00 49 06 +57 48 55	STF 60 AG	2012	19	259	419.7	3.52	9.53	6.01
Show		21732	00 49 06 +57 48 55	STF 60 AH	2012	4	355	701.1	3.52	8.41	4.89
Show		21732	00 49 06 +57 48 55	SMR 2 AI	2012	7	73	90.3	3.52	11.60	8.08
Show		21732	00 49 06 +57 48 55	SMR 2 AJ	2012	5	262	237.1	3.52	12.30	8.78
Show		21732	00 49 05 +57 49 04	STF 60 BC	2016	5	259	235.4	7.36	11.40	4.04
Show		21732	00 49 05 +57 49 04	STF 60 BD	2000	1	1	172.2	7.36	12.80	5.44
Show		21732	00 49 05 +57 49 04	STF 60 BE	2020	4	126	105.5	7.36	10.15	2.79
Show		21732	00 49 05 +57 49 04	STF 60 BF	2016	3	275	388.1	7.36	11.53	4.17
Show		21730	00 49 05 +57 49 04	STF 60 BG	2016	3	256	420.0	7.36	9.53	2.17
Show		21732	00 49 05 +57 49 04	STF 60 BH	2020	5	355	688.4	7.36	8.41	1.05
Show		21730	00 48 19 +57 49 34	STF 60 FG	2015	10	188	142.2	11.53	9.53	2.00

11-fold system
11 estimated visually detectable stars in this system

Common name	Achird		Constellation	Cassiopeia		SAO	21732		HIP	3821
Tycho2	3663-02669-1		HD	4614		HR	219		GC	962
ADS	671		BD	BD+57 150		Bayer	Eta Cassiopeiae		Bayer name	Eta Cas
Flamsteed	24 Cassiopeiae		Flamsteed name	24 Cas		Distance	5.95		Distance ly	19.41
Bayer greek	η Cas

Other names

MARFAK

Meaning

first applied to ? Cassiopeiae in the Skalnate Pleso Atlas of the Heavens published in 1950, but is not known prior to that.

discov_num	notes	refcode
STF 60	eta Cas = 24 Cas = Achird.
	Proper motion of A +1141 -572. PM of B = +1105 -493.
	A has been reported to be a	Dob1927
	spectroscopic binary, but this is not confirmed. Doberck, Pavel, and	Pav1914
	Harshaw measure attributed to BC, then later to BE, was actually to	Hsw2004
	another faint star; confusion was due to the high proper motion of the
	B component and the long time span since the previous measurement.
	Proper Motion of E -003-001, F -010+000, G +009-005, H -006-001
	System has been discussed by van de Kamp & Flather.	Kam1955
	AB: H 3 3.	MEv2010
	AB: Additional notes may be found in Simonov (1937).	Smw1937
	AB: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 1.58 +/- 0.85, 1.71, and 1.60 Msun, respectively.	Mlk2012
	AB: Raghavan et al. (2010) do not accept the astrometric sub-system as	Rag2010
	real.	Tok2014d
	CHARA Array Limb-darkened diameter 1.623 +/- 0.004 mas,	CIA2012e
	R = 1.039 +/- 0.004 \rsun, L = 1.252 +/-0.019 \lsun,
	Teff = 6003 +/- 24 K, M = 0.972 +/- 0.012 \msun,
	Age = 5.4 +/- 0.9 Gyr.
	AD: Rectilinear solution by Hurowitz et al. (2013).	USN2013a

refcode	metd	author	reference
CIA2012e	not j	Boyajian, T.S., McAlister, H.A., van Belle, G., Gies, D.R., ten Brummelaar, T.A.,	2012ApJ...746..101B
CIA2012e		von Braun, K., Farrington, C., Goldfinger, P.J., O'Brien, D., Parks, J.R.,	.
CIA2012e		Richardson, N.D., Ridgway, S., Schaefer, G., Sturmann, L., Sturmann, J., Touhami,	.
CIA2012e		Y., Turner, N.H. & White, R.	.
CIA2012e		ApJ 746, 101, 2012	.
Dob1927	Ma -	Doberck, W.A.	1927QB821.D6.......
Dob1927	+Mb	Erganz. AN 7, 1927
Dob1927		(catalog of measures 1875-1927; includes nearly all measures from earlier papers)
Hsw2004	Pa j	Harshaw, R.	...................
Hsw2004		Webb Soc., Double Star Circ. 12, 2004
Kam1955	-	van de Kamp, P. & Flather, E.	1955AJ.....60..448V
Kam1955		AJ 60, 448, 1955
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012	not -	Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.	2012A&A...546A..69M
Mlk2012		A&A 546, A69, 2012
Pav1914	Ma j	Pavel, F.	1914AN....198..323P
Pav1914	+C	AN 198, 323, 1914
Rag2010	K -	Raghavan, D., McAlister, H.A., Henry, T.J., Latham, D.W., Marcy, G.W.,	2010ApJS..190....1R
Rag2010	+S	Mason, B.D., Gies, D.R., White, R.J. & ten Brummelaar, T.A.
Rag2010	+P	ApJS 190, 1, 2010
Smw1937	Ma -	Simonov, G.V.	1938VeBB....5.....S
Smw1937		Pub. Berlin Babelsberg Obs. 11, Pt.5, 1937
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014
USN2013a	lin -	Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D.	2013IAUDS.181....1H
USN2013a		Inf. Circ. 181, 1, 2013

discov	author
CIA	Center for High Angular Resolution Astronomy (CHARA Interferometric Array)
CIA	McAlister, H.A., ten Brummelaar, T.A., Gies, D.R., Huang, W., Bagnuolo, Jr., W.G.,
CIA	Shure, M.A., Sturmann, J., Sturmann, L., Turner, N.H., Taylor, S.F., Berger, D.H.,
CIA	Baines, E.K., Grundstrom, E. & Ogden, C.
CIA	Berger, D.H., Gies, D.R., McAlister, H.A., ten Brummelaar, T.A., Henry, T.J.,
CIA	Sturmann, J., Sturmann, L., Turner, N.H., Ridgway, S.T., Aufdenberg, J.P. &
CIA	Di Holco, E., Absil, O., Augereau, J.-C., Merand, A., Coude du Foresto, V.,
CIA	Thevenin, F., Defrere, D., Kervella, P., ten Brummelaar, T.A., McAlister, H.A.,
CIA	Ridgway, S.T., Sturmann, J., Sturmann, L. & Turner, N.H.
CIA	Zhao, M., Gies, D., Monnier, J.D., Thureau, N., Pedretti, E., Baron, F.,
CIA	Merand, A., ten Brummelaar, T., McAlister, H., Ridgway, S.T., Turner, N.,
CIA	Sturmann, J., Sturmann, L., Farrington, C., & Goldfinger, P.J.
CIA	Baines, E.K., McAlister, H.A., ten Brummelaar, T.A., Turner, N.H., Sturmann, J.,
CIA	Sturmann, L., Goldfinger, P.J. & Ridgway, S.T.
CIA	Boyajian, T.S., McAlister, H.A., Baines, E.K., Gies, D.R., Henry, T., Jao, W.-C.,
CIA	O'Brien, D., Raghavan, D., Touhami, Y., ten Brummelaar, T.A., Farrington, C.,
CIA	Goldfinger, P.J., Sturmann, L., Sturmann, J., Turner, N.H. & Ridgway, S.
CIA	Kervella, P., Merand, A., Pichon, B., Thevenin, F., Heiter, U., Bigot, L.,
CIA	ten Brummelaar, T.A., McAlister, H.A., Ridgway, S.T., Turner, N., Sturmann, J.,
CIA	Sturmann, L., Goldfinger, P.J. & Farrington, C.
CIA	Baines, E.K., McAlister, H.A., ten Brummelaar, T.A., Sturmann, J., Sturmann, L.,
CIA	Turner, N.H. & Ridgway, S.T.
CIA	Boyajian, T.S., McAlister, H.A., Cantrell, J.R., Gies, D.R., ten Brummelaar, T.A.,
CIA	Farrington, C., Goldfinger, P.J., Sturmann, L., Sturmann, J., Turner, N.H. &
CIA	Farrington, C.D., ten Brummelaar, T.A., Mason, B.D., Hartkopf, W.I., McAlister,
CIA	H.A., Raghavan, D., Turner, N.H., Sturmann, L., Sturmann, J., & Ridgway, S.T.
CIA	Baines, E.K., Dollinger, M.P., Cusano, F., Guenther, E.W., Hatzes, A.P.,
CIA	McAlister, H.A., ten Brummelaar, T.A., Turner, N.H., Sturmann, J., Sturmann, L.,
CIA	Goldfinger, P.J., Farrington, C.D. & Ridgway, S.T.
CIA	ten Brummelaar, T.A., O'Brien, D.P., Mason, B.D., Farrington, C.D.,
CIA	Fullerton, A.W., Gies, D.R., Grundstrom, E.D., Hartkopf, W.I., et al.
CIA	O'Brien, D.P., McAlister, H.A., Raghavan, D., Boyajian, T.S.,
CIA	ten Brummelaar, T.A., Sturmann, J., Sturmann, L., Turner, N.H., & Ridgway, S.
CIA	Monnier, J.D., Zhao, M., Pedretti, E., Millan-Gabet, R., Berger, J.-P., Traub, W.,
CIA	Schloerb, F.P., ten Brummelaar, T., McAlister, H., Ridgway, S., Sturmann, L.,
CIA	Sturmann, J., et al.
CIA	Raghavan, D., Farrington, C.D., ten Brummelaar, T.A., McAlister, H.A.,
CIA	Ridgway, S.T., Sturmann, L., Sturmann, J., & Turner, N.H.
CIA	Baron, F., Monnier, J., Pedretti, E., Zhao, M., Schaefer, G., Parks, R., Che, X.,
CIA	Thureau, N., ten Brummelaar, T.A., McAlister, H.A., Ridgway, S.T., Farrington, C.,
CIA	Sturmann, J., Sturmann, L., & Turner, N.
CIA	Che, X., Monnier, J.D., Tycner, C., Kraus, S., Zavala, R.T., Baron, F., Pedretti,
CIA	E., ten Brummelaar, T., McAlister, H., Ridgway, S.T., Sturmann, J., Sturmann, L.,
CIA	& Turner, N.
CIA	Baines, E.K., White, R.J., Huber, D., Jones, J., Boyajian, T., McAlister, H.A.,
CIA	ten Brummelaar, T.A., Turner, N.H., Sturmann, J., Sturmann, L., Goldfinger, P.J.,
CIA	Farrington, C.D., Riedel, A.R., Ireland, M., von Braun, K. & Ridgway, S.T.
CIA	Boyajian, T.S., McAlister, H.A., van Belle, G., Gies, D.R., ten Brummelaar, T.A.,
CIA	von Braun, K., Farrington, C., Goldfinger, P.J., O'Brien, D., Parks, J.R.,
CIA	Richardson, N.D., Ridgway, S., Schaefer, G., Sturmann, L., Sturmann, J., Touhami,
CIA	Y., Turner, N.H. & White, R.
CIA	Boyajian, T.S., von Braun, K., van Belle, G., McAlister, H.A., ten Brummelaar,
CIA	T.A., Kane, S.R., Muirhead, P.S., Jones, J., White, R., Schaefer, G., Ciardi, D.,
CIA	Henry, T., Lopez-Morales, M., Ridgway, S., Gies, D., Jao, W.-C., Rojas-Ayala, B.,
CIA	Parks, J.R., Sturmann, L., Sturmann, J., Turner, N.H., Farrington, C., Goldfinger,
CIA	ApJ 757, 112, 2012
CIA	Gallenne, A., Monnier, J., Merand, A., Kervella, P., Kraus, S., Schaefer, G.H.,
CIA	Gieren, W., Pietrzynski, G., Szabados, L., Che, X., Baron, F., Pedretti,E., et al.
CIA	Absil, O., Defrere, D., Coude du Foresto, V., Di Folco, E., Merand, A., Augereau,
CIA	J.-C., Ertel, S., Hanot, C., Kervella, P., Mollier, B., Scott, N., Che, X. et al.
CIA	Boyajian, T.S., von Braun, K., van Belle, G., Farrington, C., Schaefer, G., Jones,
CIA	J., White, R., McAlister, H.A., ten Brummelaar, T.A., Ridgway, S., Gies, D.R.,
CIA	Sturmann, L., Sturmann, J., Turner, N.H., Goldfinger, P.J. & Vargas, N.
CIA	Farrington, C.D., ten Brummelaar, T.A., Mason, B.D., Hartkopf, W.I., Mourard, D.,
CIA	Moravveji, E., McAlister, H.A., Turner, N.H., Sturmann, L., & Sturmann, J.
CIA	von Braun, K., Boyajian, T.S., van Belle, G.T., Kane, S.R., Jones, J., Farrington,
CIA	C., Schaefer, G., Vargas, N., Scott, N., ten Brummelaar, T.A., Kephart, M., Gies,
CIA	D.R., Ciardi, D.R., Lopez-Morales, M., Mazingue, C., McAlister, H.A., Ridgway, S.,
CIA	Goldfinger, P.J., Turner, N.H. & Sturmann, L.
CIA	Mourard, D., Monnier, J., Meilland, A., Gies, D., Millour, F., Benisty, M.,
CIA	Che, X., Grundstrom, E.D., Ligi, R., Schaefer, G., Baron, F., Kraus, S.,
CIA	Zhao, M., Pedretti, E., Berio, P., Clausse, J.M., Nardetto, N., Perraut, K.,
CIA	Spang, A., Stee, P., Tallon-Bose, I., McAlister, H., ten Brummelaar, T.,
CIA	Ridgway, S.T., Sturmann, J., Sturmann, L., Turner, N. & Farrington, C.
CIA	Roettenbacher, R.M., Monnier, J., Henry, G.W., Fekel, F.C., Williamson, M.H.,
CIA	Pourbaix, D., Latham, D.W., Latham, C.A., Torres, G., Baron, F., Che, X.,
CIA	Kraus, S., et al.
CIA	Roettenbacher, R.M., Monnier, J., Fekel, F.C., Henry, G.W., Korhonen, H.,
CIA	Latham, D.W., Muterspaugh, M.W., Williamson, M.H., Baron, F.,
CIA	ten Brummelaar, T.A., Che, X., Harmon, R.O., et al.
CIA	Boyajian, T., von Braun, K., Feiden, G.A., Huber, D., Basu, S., Demarque, P.,
CIA	Fischer, D.A., Schaefer, G., Mann, A.W., White, T.T., Maestro, V., Brewer, J.,
CIA	Lamell, C.B., Spada, F., Lopez-Morales, M., Ireland, M., Farrington, C., van Belle,
CIA	G.T., Kane, S.R., Jones, J., ten Brummelaar, T.A., Ciardi, D.R., McAlister, H.A.,
CIA	Ridgway, S., Goldfinger, P.J., Turner, N.H. & Sturmann, L.
CIA	Gallenne, A., Merand, A., Kervella, P., Monnier, J., Schaefer, G.H.,
CIA	Roettenbacher, R.M., Gieren, W., Pietrzynski, G., McAlister, H.A.,
CIA	ten Brummelaar, T.A., Sturmann, J., Sturmann, L., Turner, N.H., & Anderson, R.I.
CIA	Richardson, N.D., Shenar, T., Roy-Loubier, O., Schaefer, G., Moffat, A.F.J.,
CIA	St-Louis, N., Gies, D.R., Farrington, C., Hill, G.M., Williams, P.M.,
CIA	Gordon, K., Pablo, H., & Ramiaramanantsoa, T.
CIA	Schaefer, G.H., Hummel, C.A., Gies, D.R., Zavala, R.T., Monnier, J.D.,
CIA	Walter, F.M., Turner, N.H., Baron, F., ten Brummelaar, T., Che, X.,
CIA	Farrington, C.D., Kraus, S., Sturmann, J., & Sturmann, L.
CIA	Gardner, T., Monnier, J.D., Fekel, F.C., Williamson, M., Duncan, D.K., White, T.R.,
CIA	Ireland, M., Adams, F.C., Barman, T., Baron, F., ten Brummelaar, T., Che, X.,
CIA	Huber, D., Kraus, S., Roettenbacher, R.M., Schaefer, G., Sturmann, J., Sturmann, L.,
CIA	ApJ 855, 1, 2018
CIA	Schaefer, G.H., White, R.J., Baines, E.K., Boyajian, T.S., ten Brummelaar, T.A.,
CIA	White, T.R., Huber, D., Mann, A.W., Casagrande, L., Grunblatt, S.K., Justesen,
CIA	Farrington, C.D., Fekel, F.C., Schaefer, G.H. & ten Brummelaar, T.A.
CIA	Lester, K.V., Gies, D.R., Schaefer, G.H., Farrington, C.D., Monnier, J.D.,
CIA	Lester, K.V., Gies, D.R., Schaefer, G.H., Farrington, C.D., Guo, Z., Matson, R.A.,
CIA	Lester, K.V., Fekel, F.C., Muterspaugh, M., Gies, D.R., Schaefer, G.H., Farrington,
CIA	Thomas, J.D., Richardson, N.D., Eldridge, J.J., Schaefer, G., Monnier, J.D.,
CIA	Sana, H., Moffat, A.F.J., Williams, P., Corcoran, M.F., Stevens, I.R., Weigelt, G.,
CIA	Zainol, F.D., Anugu, N., Le Bouquin, J.-B., ten Brumelaar, T.A., Campos, F., et al.
CIA	Klement, R., Hadrava, P., Rivinius, T., Baade, D., Cabezas, M., Heida, M.,
CIA	Schaefer, G.H., Gardner, T., Gies, D.R., Anugu, N., Lanthermann, C., Davies, C.L.,
CIA	Anderson, M.D., Monnier, J.D., Ennis, J., Labdon, A., Setterholm, B.R., Kraus, S.,
CIA	ten Brummelaar, T.A. & Le Bouquin, J.-B.
CIA	Gardner, T., Monnier, J.D., Fekel, F.C., Williamson, M., Baron, F., Hinkley, S.,
CIA	Gardner, T., Monnier, J.D., Fekel, F.C., Schaefer, G., Johnson, K.J.C., Le Bouquin,
CIA	Richardson, N.D., Lee, L., Schaefer, G., Shenar, T., Sander, A.A.C., Hill, G.M.,
CIA	Klement, R., Schaefer, G.H., Gies, D.R., Wang, L., Baade, D., Rivinius, T.,
CIA	Schaefer, G., Anugu, N., ten Brummelaar, T., Farrington, C., Gies, D., Jones, J.,
CIA	Morales, L.M., Sandquist, E.L., Schaefer, G.H., Farrington, C.D., Klement, R.,
CIA	Torres, G., Schaefer, G.H., Monnier, J.D., Anugu, N., Davies, C.L., Ennis, J.,
CIA	Farrington, C.D., Gardner, T., Klement, R., Kraus, S., Labdon, A., Lanthermann, C.,
CIA	Lester, K.V., Schaefer, G.H., Fekel, F.C., Gies, D.R., Henry, T.J., Jao, W.-C.,
CIA	Gardner, T., Monnier, J.D., Fekel, F.C., Le Bouquin, J.-B., Scovera, A., Schaefer,
CIA	Klement, R., Baade, D., Rivinius, T., Gies, D.R., Wang, L., Labadie-Bartz, J.,
CIA	De Furio, M., Gardner, T., Monnier, J., Meyer, M.R., Kratter, K., Schaefer, G.,
CIA	Lanthermann, C., Le Bouquin, J.-B., Sana, H., Merand, A., Monnier, J.D., Perrault,
CIA	K., Frost, A.J., Mahy, L., Gosset, E., De Becker, M., Kraus, S., Aruga, N. et al.
CIA	Lam, R., Sandquist, E.L., Schaefer, G.H., Farrington, C.D., Monnier, J.D., Anugu,
CIA	AJ 166, 29, 2023
CIA	Klement, R., Rivinius, T., Gies, D.R., Baade, D., Merand, A., Monnier, J.D.,
CIA	Echeverri, D., Xuan, J.W., Monnier, J.D., Delorme, J.-R., Wang, J.J., Jovanovic,
CIA	Evans, N.R., Schaefer, G.H., Gallenne, A., Torres, G., Horch, E.P., Anderson, R.I.,
CIA	Torres, G., Schaefer, G.H., Stefanik, R.P., Latham, D.W., Boden, A.F., Anugu, N.,
CIA	Evans, N.R., Gallenne, A., Kervella, P., Merand, A., Monnier, J., Anderson, R.I.,
CIA	Kuraszkiewicz, J., Anugu, N., Roettenbacher, R.M., Lanthermann, C., Gutierrez, M.,
CIA	Richardson, N.D., Schaefer, G.H., Eldridge, J.J., Spejcher, R., Holdsworth, A.,
CIA	Holdsworth, A., Richardson, N.D., Schaefer, G.H., Eldridge, J.J., Hill, G.M.,
CIA	Shepard, K., Gies, D.R., Schaefer, G.H., Anugu, N., Baron, F.R., Lanthermann, C.,
CIA	Danner, C.A., Sandquist, E.L., Schaefer, G.H., Bedin, L.R., Farrington, C.D.,
CIA	De Furio, M., Gardner, T., Monnier, J.D., Meyer, M.R., Kratter, K.M., Lanthermann,
CIA	Torres, G., Tkachenko, A., Pavlovski,K., Gossage, S., Schaefer, G.H., Melis. C.,
DOB	Doberck, W.A.
RAG	Raghavan, D., Henry, T.J., Mason, B.D., Subasavage, J.P., Jao, W.-C., Beaulieu,
RAG	T.D., & Hambly, N.C.
RAG	Raghavan, D., McAlister, H.A., Torres, G., Latham, D.W., Mason, B.D., Boyajian,
RAG	T.S., Baines, E.K., Williams, S.J. et al.
RAG	Raghavan, D., McAlister, H.A., Henry, T.J., Latham, D.W., Marcy, G.W.,
RAG	Mason, B.D., Gies, D.R., White, R.J. & ten Brummelaar, T.A.
TOK	Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK	Martinez, M., & Mondaca, E.
TOK	Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK	Tokovinin, A. & Briceno, C.
USN	Franz, O.G., Gossner, J.L., Josties, F.J., Lindenblad, I.W., Mikesell, A.H.,
USN	Pub. USNO 18, Pt.1, 1963
USN	Kallarakal, V.V., Lindenblad, I.W., Josties, F.J., Riddle, R.K., Miranian, M.,
USN	Mintz, B.F., & Klugh, A.P.
USN	Harrington, R.S., Dahn, C.C., Behall, A.L., Priser, J.B., Christy, J.W., Riepe,
USN	B.Y., Ables, H.D., Guetter, H.H., et al.
USN	Dahn, C.C., Harrington, R., Riepe, B.Y., Christy, J.W., Guetter, H.H.,
USN	Behall, A.L., Walker, R.L., Hewitt, A.V., & Ables, H.D.
USN	Dahn, C.C., Harrington, R.S., Riepe, B.Y., Christy, J.W., Guetter, H.H.,
USN	Kallarakal, V.V., Miranian, M., Walker, R.L., et al.
USN	Harrington, R.S., Kallarakal, V.V., Christy, J.W., Dahn, C.C., Riepe, B.Y.,
USN	Guetter, H.H., Ables, H.D., Hewitt, A.V., et al.
USN	Dahn, C.C., Harrington, R.S., Kallarakal, V.V., Guetter, H.H., Luginbuhl, C.B.,
USN	Riepe, B.Y., Walker, R.L., Pier, J.R., et al.
USN	Harrington, R.S., Dahn, C.C., Kallarakal, V.V., Guetter, H.H., Riepe, B.Y.,
USN	Walker, R.L., Pier, J.R., Vrba, F.J., et al.
USN	Monet, D., Bird A., Canzian B., Dahn C., Guetter H., Harris H., Henden A.,
USN	Levine S., Luginbuhl C., Monet A.K.B., Rhodes A., Riepe B., et al.
USN	Harris, H.C., Dahn, C.C., Dupuy, T.J., Canzian, B., Guetter, H.H., Hartkopf, W.I.,
USN	Ireland, M.J., Leggett, S.K., Levine, S.E., Liu, M.C., Luginbuhl, C.B.,
USN	Monet, A.K.B., Stone, R.C., Subasavage, J.P., Tilleman, T., & Walker, R.L.
USN	Dahn, C.C., Harris, H.C., Subasavage, J.P., Ables, H.D., Canzian, B.J., Guetter,
USN	H.H., Harris, F.H., Henden, A.H., Leggett, S.K., Levine, S.E., Luginbuhl, C.B.,
USN	Monet, A.B., Monet, D.G., Munn, J.A., Pier, J.R., Stone, R.C., Vrba, F.J., Walker,
USN	R.L. & Tillerman, T.M.

coord_2000

discov_num

comp

epoch

obs

pa

sep

mag_pri

mag_sec

spectr

dm_number

notes

coord_arcsec_2000

00491+5749

STF 60

AD

2000

6

1

172.2

3.52

11.60

N DP

004905.10+574859.6

00491+5749

STF 60

AD

2009

7

355

186.6

3.52

11.60

NUDP

004905.10+574859.6

00491+5749

STF 60

AD

2011

8

354

189.4

3.52

11.60

NUDP

004905.10+574859.6

If you need more information about this double, apply for a data request form to the WDS.

No records found.


No records found.

Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation.

Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

FoV: 30" 1' 5' 15' 30' 1° 2° 4° 5° 8° Limit: 2 3 4 5 10 15 20 25 30 50 100 Primaries only
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(') Show Achird 00491+5749 STF 60 AB 328 13.5 0 Show Achird 00491+5749 SMR 2 AI 73 90.3 0 Show Achird 00491+5749 SMR 2 AJ 262 237.1 0 Show Achird 00491+5749 STF 60 AC 260 225.0 0 Show Achird 00491+5749 STF 60 AE 126 66.0 0 Show Achird 00491+5749 STF 60 AH 355 701.1 0 Show Achird 00491+5749 STF 60 AG 259 419.7 0 Show Achird 00491+5749 STF 60 AD 354 189.4 0 Show Achird 00491+5749 STF 60 AF 276 378.3 0 Show 00491+5749 STF 60 Aa,Ab 134 5.1 0 Show 00491+5749 STF 60 BC 259 235.4 1 Show 00491+5749 STF 60 BD 1 172.2 1 Show 00491+5749 STF 60 BE 126 105.5 1 Show 00491+5749 STF 60 BF 275 388.1 1 Show 00491+5749 STF 60 BG 256 420.0 1 Show 00491+5749 STF 60 BH 355 688.4 1 Show 00491+5749 STF 60 FG 188 142.2 7 Show 00490+5802 TDS1629 121 1.0 14 Show 00469+5735 TDS1610 AB 239 1.9 24 Show 00469+5735 TDS1610 AB,C 108 5.7 24 Show 00503+5725 STI1442 75 5.9 27 Show 00465+5731 MLR 651 46 1.0 27 Show 00492+5720 A 921 AB 2 0.2 30 Show 00492+5720 A 921 AB,C 269 4.8 30 Show 00522+5805 TDS1646 139 0.5 30 Show 00479+5819 TDS1615 133 1.2 32 Show 00483+5823 STI1429 319 10.4 35 Show 00513+5717 TDS1638 114 1.9 37 Show 00472+5716 TDS 29 245 2.6 37 Show 00492+5830 J 2385 237 7.0 40 Show 00434+5750 MLR 649 97 1.4 45 Show 00548+5759 STI1471 118 13.3 47 Show 00437+5807 STI1419 AB 259 16.1 48 Show 00437+5807 BKO 135 BC 243 9.9 48 Show 00531+5713 ES 552 86 14.5 49 Show 00486+5701 STI1432 19 7.2 49 Show 00514+5705 ES 1868 AB 185 6.5 50 Show 00514+5705 FYM 210 AC 104 23.8 50 Show 00429+5742 A 916 240 0.3 51 Show 00429+5738 ES 404 31 1.5 51 Show 00533+5711 STI1463 AB 19 10.5 52 Show 00533+5711 BKO 140 AC 93 13.4 52 Show 00555+5800 ES 1771 355 7.8 52 Show 00557+5748 ES 405 117 4.4 53 Show 00426+5736 ES 1806 237 5.7 54 Show 00513+5840 GIC 14 11 12.2 54 Show 00425+5735 TDS1575 98 4.9 55 Show 00450+5833 BKO 138 343 3.2 56 Show 00448+5833 BKO 137 BC 268 12.8 56 Show 00448+5833 STI1423 AB 169 13.2 56 Show 00555+5725 STI1475 2 8.1 57

	A	Ab	B	C	D	E	F	G	H	I
Ab	pa=134.0° sep=5.11"
B	pa=315.5° sep=12.89"	pa=315.1° sep=18.00"
C	pa=259.5° sep=225.06"	pa=260.5° sep=228.07"	pa=256.7° sep=218.12"
D	pa=354.0° sep=189.44"	pa=353.0° sep=193.38"	pa=356.6° sep=179.53"	pa=41.3° sep=305.24"
E	pa=126.2° sep=65.96"	pa=125.5° sep=60.90"	pa=127.7° sep=78.70"	pa=89.6° sep=274.57"	pa=162.2° sep=238.78"
F	pa=275.9° sep=378.98"	pa=276.4° sep=383.02"	pa=274.6° sep=369.14"	pa=297.1° sep=175.08"	pa=247.3° sep=386.97"	pa=280.3° sep=437.24"
G	pa=258.5° sep=419.80"	pa=259.1° sep=422.72"	pa=257.0° sep=412.91"	pa=257.3° sep=194.80"	pa=235.2° sep=476.58"	pa=264.5° sep=466.83"	pa=195.6° sep=127.25"
H	pa=355.4° sep=701.08"	pa=355.1° sep=704.92"	pa=356.1° sep=691.24"	pa=12.6° sep=757.94"	pa=355.9° sep=511.72"	pa=351.6° sep=745.82"	pa=25.9° sep=733.38"	pa=24.4° sep=858.92"
I	pa=72.6° sep=90.27"	pa=69.7° sep=87.94"	pa=79.4° sep=96.81"	pa=77.5° sep=314.86"	pa=146.8° sep=193.02"	pa=26.5° sep=73.71"	pa=91.5° sep=463.22"	pa=77.5° sep=509.66"	pa=168.1° sep=686.68"
J	pa=261.6° sep=237.17"	pa=262.6° sep=240.33"	pa=259.0° sep=229.81"	pa=295.5° sep=14.78"	pa=223.9° sep=309.57"	pa=270.9° sep=287.93"	pa=117.3° sep=160.30"	pa=74.5° sep=183.40"	pa=193.6° sep=754.75"	pa=259.1° sep=326.62"

Common name	Achird		Meaning	first applied to ? Cassiopeiae in the Skalnate Pleso Atlas of the Heavens published in 1950, but is not known prior to that.		Other names	MARFAK		Coord arcsec 2000	004906.29+574854.7
Mag	3.52		Spectral class	G1V (yellow)		PmRA	114.00		PmDE	-57.0
SAO	21732		HIP	3821		Tycho2	3663-02669-1		HD	4614
HR	219		GC	962		BD	BD+57 150		Bayer	Eta Cassiopeiae
Bayer name	eta Cas		Flamsteed	24 Cassiopeiae		Flamsteed name	24 Cas

Tycho2	3663-02669-1		Pflag	X		RAmdeg			DEmdeg
PmRA			PmDE			E RAmdeg			E DEmdeg
E pmRA			E pmDE			EpRAm			EpDEm
Num			Q RAmdeg			Q DEmdeg			Q pmRA
Q pmDE			BTmag	4.142		E BTmag	0.014		VTmag	3.518
E VTmag	0.009		Prox	129		TYC	T		HIP	3821
CCDM	A		RAdeg	12.27143833		DEdeg	57.81649972		EpRA 1990	1.58
EpDE 1990	1.56		E RAdeg	3.1		E DEdeg	3.1		Posflg
Corr	0.3

SAO	21732		DelFlag			RA1950			PmRA1950	0.1368
DE1950			PmDE1950	-0.521		Vmag	3.6		SpType	F8
Double code			Source	70		CatNum	962		DM	BD+57 150
DMcomp			BDsup			HD	4614		M HD	0
GC	962		RA1950rad	0.20097791		DE1950rad	1.00445227		PmRA2000	0.1377
PmDE2000	-0.529

Catalog	H		HIP	3821		Proxy			RAhms	00 49 05.10
DEdms	+57 48 59.6		Vmag	3.46		VarFlag	1		R Vmag	H
RAdeg	12.2713		DEdeg	57.8165		AstroRef	A		Plx	167.99
CCDM	1087.11 -		N CCDM	I		Nsys	2		Ncomp	2
MultFlag	C		Source			Qual	A		M HIP	AB
Theta	313		Rho	12.49		HD			BD	BD+57 150
CD			CP			Dm number	+57 150		VIred	0.65
SpType	G0V SB		R SpType			Coord arcsec 2000	004905.10+574859.6

HIP	3821		Sn	17		So	3		Nc	2
RArad	0.2141737695		DErad	1.0090891165		Plx	167.98		PmRA	1086.59
PmDE	-559.43		E RArad	0.3		E DErad	0.27		E Plx	0.48
E pmRA	0.4		E pmDE	0.33		Hpmag			E Hpmag	0.0024
SHp	0.009		VA	2		BV	0.587		E BV	0.003
VI	0.66

Ccdm	00491+5749		RComp			Comp	A		Note1
Note2			Discov num			DRAs	-0.28		DDEs	-0.8
R dRAs	10		Year			Theta			Rho
Obs	8		Vmag	3.6		Sp	F8		PmNote	*
PmRA	1108		PmDE	-510		Dm number	+57 150		Cat1	BD
Name2	+57 81		Cat2	AGK2/3		HD	4614		M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717A
HIC	3821

Coord arcsec 2000

004906.75+574851.1

Delta magnitude

3.52

Coordinate calculated

yes

Coord arcsec 2000	004905.16+574903.9		Coord calc	004905.16+574903.9		Mag	7.36		Spectral class	K7V (yellow-orange)
PmRA	115.00		PmDE	-47.0		Delta magnitude	3.84

Ccdm	00491+5749		RComp			Comp	B		Note1	*
Note2			Discov num	STF 60		DRAs			DDEs
R dRAs			Year	1959		Theta			Rho
Obs	99		Vmag	7.2		Sp			PmNote
PmRA			PmDE			Dm number			Cat1
Name2			Cat2			HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717B
HIC

Coord arcsec 2000	004838.60+574813.7		Mag	11.4		PmRA	0.00		PmDE	0.0
Delta magnitude	7.88		Coordinate calculated	yes

Ccdm	00491+5749		RComp			Comp	C		Note1
Note2			Discov num	STF 60		DRAs	-27.53		DDEs	-46.3
R dRAs	65		Year	1922		Theta	238		Rho	158.9
Obs	2		Vmag	11.4		Sp			PmNote
PmRA			PmDE			Dm number			Cat1
Name2			Cat2			HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717C
HIC

Coord arcsec 2000	004903.81+575203.1		Mag	12.8		PmRA	0.00		PmDE	0.0
Delta magnitude	9.28		Coordinate calculated	yes

Ccdm	00491+5749		RComp			Comp	D		Note1
Note2			Discov num	STF 60		DRAs	-0.60		DDEs	175.8
R dRAs	65		Year	1921		Theta	030		Rho	159.6
Obs	2		Vmag	11.6		Sp			PmNote
PmRA			PmDE			Dm number			Cat1
Name2			Cat2			HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717D
HIC

Coord arcsec 2000	004912.95+574815.7		Mag	10.15		PmRA	0.00		PmDE	0.0
Delta magnitude	6.63		Coordinate calculated	yes

Ccdm	00491+5749		RComp			Comp	E		Note1
Note2			Discov num	STF 60		DRAs	10.01		DDEs	-56.8
R dRAs	65		Year	1921		Theta	120		Rho	190.6
Obs	6		Vmag	9.0		Sp			PmNote
PmRA			PmDE			Dm number	+57 155		Cat1	BD
Name2			Cat2			HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717E
HIC

Coord arcsec 2000	004819.10+574933.6		Coord calc	004819.10+574933.6		Mag	11.53		PmRA	-3.00
PmDE	-2.0		Tycho2	3663-01484-1		Delta magnitude	8.01

Tycho2	3663-01484-1		Pflag			RAmdeg	12.07959919		DEmdeg	57.82600727
PmRA	-10.0		PmDE	0.3		E RAmdeg	121		E DEmdeg	118
E pmRA	4.1		E pmDE	4.5		EpRAm	1978.64		EpDEm	1981.49
Num	3		Q RAmdeg	0.9		Q DEmdeg	0.4		Q pmRA	0.9
Q pmDE	0.4		BTmag	13.351		E BTmag	0.238		VTmag	11.746
E VTmag	0.099		Prox	999		TYC			HIP
CCDM			RAdeg	12.07964361		DEdeg	57.82600639		EpRA 1990	1.59
EpDE 1990	1.62		E RAdeg	131.5		E DEdeg	126.2		Posflg
Corr	0.3

Ccdm	00491+5749		RComp			Comp	F		Note1
Note2			Discov num	STF 60		DRAs	-46.83		DDEs	34.3
R dRAs	65		Year	1913		Theta	268		Rho	281.7
Obs	1		Vmag	11.2		Sp			PmNote
PmRA			PmDE			Dm number			Cat1
Name2			Cat2			HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717F
HIC

Coord arcsec 2000	004814.82+574731.0		Mag	9.53		PmRA	1.00		PmDE	-1.0
SAO	21730		HIP	3809		Tycho2	3663-01096-1		HD	236533
BD	BD+57 151		Delta magnitude	6.01		Coordinate calculated	yes

Tycho2	3663-01096-1		Pflag			RAmdeg	12.06895191		DEmdeg	57.78688998
PmRA	9.0		PmDE	-5.4		E RAmdeg	9		E DEmdeg	9
E pmRA	1.7		E pmDE	1.7		EpRAm	1990.93		EpDEm	1990.98
Num	8		Q RAmdeg	0.7		Q DEmdeg	1.6		Q pmRA	0.7
Q pmDE	1.6		BTmag	9.808		E BTmag	0.018		VTmag	9.526
E VTmag	0.016		Prox	999		TYC	T		HIP
CCDM			RAdeg	12.06891278		DEdeg	57.78690333		EpRA 1990	1.58
EpDE 1990	1.64		E RAdeg	9.0		E DEdeg	8.7		Posflg
Corr	0.3

SAO	21730		DelFlag			RA1950			PmRA1950	-0.0002
DE1950			PmDE1950	0.003		Vmag	8.1		SpType	K7
Double code			Source	38		CatNum	657		DM	BD+57 151
DMcomp			BDsup			HD	236533		M HD	0
GC			RA1950rad	0.2008733		DE1950rad	1.0076645		PmRA2000	-0.0001
PmDE2000	-0.002

Catalog	H		HIP	3809		Proxy			RAhms	00 48 57.85
DEdms	+58 00 26.2		Vmag	8.22		VarFlag			R Vmag	H
RAdeg	12.241		DEdeg	58.0073		AstroRef			Plx	2.31
CCDM	-4.51		N CCDM	I		Nsys	2		Ncomp	1
MultFlag			Source			Qual			M HIP
Theta			Rho			HD	236533		BD	BD+57 151
CD			CP			Dm number	+57 151		VIred	1.63
SpType	K7		R SpType			Coord arcsec 2000	004857.85+580026.2

HIP	3809		Sn	5		So	0		Nc	1
RArad	0.2136461651		DErad	1.0124178534		Plx	1.69		PmRA	-4.68
PmDE	-0.85		E RArad	0.48		E DErad	0.47		E Plx	0.85
E pmRA	0.73		E pmDE	0.6		Hpmag			E Hpmag	0.0013
SHp	0.018		VA	0		BV	1.673		E BV	0.036
VI	1.7

Ccdm	00491+5749		RComp			Comp	G		Note1
Note2			Discov num	STF 60		DRAs	-49.53		DDEs	-107.5
R dRAs	65		Year	1915		Theta	243		Rho	339.2
Obs	4		Vmag	8.9		Sp	A5		PmNote	*
PmRA	2		PmDE	26		Dm number	+56 129		Cat1	BD
Name2	+57 80		Cat2	AGK2/3		HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717G
HIC

Coord arcsec 2000	004859.25+580033.5		Mag	8.41		PmRA	-1.00		PmDE	0.0
Tycho2	3663-02614-1		Delta magnitude	4.89		Coordinate calculated	yes

Tycho2	3663-02614-1		Pflag			RAmdeg	12.24099563		DEmdeg	58.00726802
PmRA	-5.6		PmDE	-0.7		E RAmdeg	6		E DEmdeg	6
E pmRA	1.2		E pmDE	1.3		EpRAm	1990.93		EpDEm	1991.11
Num	13		Q RAmdeg	0.8		Q DEmdeg	0.7		Q pmRA	0.8
Q pmDE	0.7		BTmag	10.471		E BTmag	0.025		VTmag	8.405
E VTmag	0.011		Prox	999		TYC	T		HIP	3809
CCDM			RAdeg	12.24101972		DEdeg	58.00727000		EpRA 1990	1.61
EpDE 1990	1.62		E RAdeg	6.0		E DEdeg	6.1		Posflg
Corr	0.3

Ccdm	00491+5749		RComp	B		Comp	H		Note1
Note2			Discov num	STF 60		DRAs	-8.22		DDEs	685.8
R dRAs	65		Year	1928		Theta	2		Rho	648.0
Obs	1		Vmag	8.6		Sp	K7		PmNote	*
PmRA	-7		PmDE	21		Dm number	+57 151		Cat1	BD
Name2	+57 82		Cat2	AGK2/3		HD			M HD
ADS BDS	A 671		M ADS BDS			N IDS			IDS	00430N5717H
HIC	3809

Coord arcsec 2000	004917.07+574921.7		Mag	11.6		PmRA	6.00		PmDE	3.0
Tycho2	3663-00284-1		Delta magnitude	8.08		Coordinate calculated	yes

Tycho2	3663-00284-1		Pflag			RAmdeg	12.32837841		DEmdeg	57.82084484
PmRA	6.1		PmDE	3.3		E RAmdeg	92		E DEmdeg	78
E pmRA	3.3		E pmDE	3.3		EpRAm	1979.84		EpDEm	1983.95
Num	4		Q RAmdeg	0.1		Q DEmdeg	0.2		Q pmRA	0.1
Q pmDE	0.2		BTmag	12.345		E BTmag	0.120		VTmag	11.688
E VTmag	0.095		Prox	750		TYC			HIP
CCDM			RAdeg	12.32835167		DEdeg	57.82083722		EpRA 1990	1.56
EpDE 1990	1.67		E RAdeg	99.7		E DEdeg	82.1		Posflg
Corr	0.3

Coord arcsec 2000	004836.93+574820.1		Mag	12.3		HIP	3825		BD	BD-21 119
Delta magnitude	8.78		Coordinate calculated	yes

Catalog	H		HIP	3825		Proxy			RAhms	00 49 06.22
DEdms	-21 09 03.8		Vmag	7.04		VarFlag	1		R Vmag	G
RAdeg	12.2759		DEdeg	-21.1511		AstroRef			Plx	4.06
CCDM	-24.22		N CCDM			Nsys			Ncomp	1
MultFlag	G		Source			Qual			M HIP
Theta			Rho			HD			BD	BD-21 119
CD			CP			Dm number	-21 119		VIred	0.91
SpType	K0/1III +G		R SpType			Coord arcsec 2000	004906.22-210903.8

HIP	3825		Sn	5		So	1		Nc	1
RArad	0.2142554964		DErad	-0.3691555059		Plx	5.87		PmRA	-19.99
PmDE	-34.97		E RArad	0.72		E DErad	0.73		E Plx	1.01
E pmRA	1.19		E pmDE	0.78		Hpmag			E Hpmag	0.0017
SHp	0.014		VA	2		BV	0.907		E BV	0.002
VI	0.91