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20577+2624
RAO 24
HD 199598

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Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20577+2624 RAO 24 (HD 199598)

20^h 57^m 39.67^s +26° 24' 18.2" P.A. 88.00 sep 0.8 mag 7.01,11.00 Sp F9V dist. 31.63 pc (103.18 l.y.)

Coord 2000	20577+2624	Discov num	RAO 24	Comp		Coord arcsec 2000	20 57 39.67 +26 24 18.2
Date first	2001	Date last	2018	Obs	7
Pa first	332	Pa last	88.4	P.A. Now (θ)	88.4°
Sep first	0.2	Sep last	0.794	Sep. Now (ρ)	0.794"
Mag pri	7.01	Mag sec	11.00	delta mag (ΔM)	3.99	Spectral class	F9V (yellow-white)
Pri motion ra	+267	Sec motion ra
Pri motion dec	+092	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 199598	Constellation	Vulpecula	SAO	89320	HIP	103455
Tycho2	2180-01813-1	Gaia DR2	1844639838900425472	HD	199598	GC	29256
BD	BD+25 4422	Distance	31.63	Distance ly	103.18

ORBITAL ELEMENTS

Period (P)	68.2y	± 1.5	Periastron (T)	2003.4771y	± 0.0006	Semi-major axis (a)	0.62a	± 0.025
Eccentricity (e)	0.774	± 0.004	Inclination (i)	154.3°	± 8.5	Longitude of periastron (ω)	84.3°	± 0.2
Node (Ω)	326.7°	± 2	Notes	n		Reference	Rbr2017a
Equinox	2000		Last observation	2015		Grade	5	(1=Definitive, 9=Indet.)

label	theta	rho
2000	350.6	0.335
2001	337.9	0.272
2002	317.1	0.203
2003	275.2	0.139
2004	207.3	0.139
2005	165.5	0.205
2006	145.1	0.276
2007	132.9	0.342
2008	124.4	0.400
2009	118.1	0.453
2010	113.0	0.501
2011	108.7	0.545
2012	105.1	0.585
2013	101.9	0.623
2014	99.1	0.657
2015	96.5	0.690
2016	94.2	0.719
2017	92.0	0.747
2018	90.0	0.773
2019	88.2	0.797
2020	86.4	0.820
2021	84.7	0.840
2022	83.1	0.859
2023	81.6	0.877
2024	80.1	0.893
2025	78.7	0.908
2026	77.3	0.922
2027	75.9	0.934
2028	74.6	0.945
2029	73.4	0.955
2030	72.1	0.964
2031	70.9	0.971
2032	69.6	0.977
2033	68.4	0.983
2034	67.2	0.987
2035	66.1	0.990
2036	64.9	0.992
2037	63.7	0.992
2038	62.5	0.992
2039	61.3	0.991
2040	60.2	0.988
2041	59.0	0.984
2042	57.8	0.980
2043	56.6	0.974
2044	55.3	0.967
2045	54.1	0.959
2046	52.8	0.950
2047	51.5	0.939
2048	50.2	0.928
2049	48.8	0.915
2050	47.4	0.901

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS 20577+2624 RAO 24 (HD 199598) : NOTES

discov_num	notes	refcode
RAO 24	A new 0".6 binary detected by Robo-AO. It was targeted because of its .
	variable velocity (Nordstrom et al. 2004) and astrometric N	rd2004
	acceleration (Makarov & Kaplan 2005). The binary is confirmed here, M	kr2005
	helped by the large PM of the primary. Our photometry places B above .
	the MS. According to Guillout et al. (2009 A&A 504, 829), the target .
	is young, so its companion could indeed be a PMS star. The object was .
	already targeted by Metchev & Hillenbrand (2009) in their survey of M	et2009
	young stars, but the binary was not detected. After learning of our .
	discovery, Metchev was able to extract a measurement of the star from .
	the archival data (S. Metchev 2015, private communication). R	br2015d

REFERENCES

refcode	metd	author	reference
Rbr2017a	A j	Roberts, L.C., Jr., Tokovinin, A., Mason, B.D., & Marinan, A.D.	2017AJ....153..100R
Rbr2017a	+Ag	AJ 153, 100, 2017

DISCOVERER

idgroup	discov	author
1	RAO	Robo AO (Palomar 60" AO project or KPNO 2.1m)
1	RAO	Law, N.M., Morton, T., Baranec, C., Riddle, R., Ravichandran, G., Ziegler, C.,
1	RAO	Johnson, J.A., Tendulkar, S.P., Bui, K., Burse, M.P., Das, H., Dekany, R., et al.
3	RAO	Riddle, R.L., Tokovinin, A., Mason, B.D., Hartkopf, W.I., Roberts, L.C., Jr.,
3	RAO	Baranec, C., Law, N.M., Bui, K., Burse, M.P., Das, H.K., Dekany, R.G.,
3	RAO	Kulkarni, S., Punnadi, S., Ramaprakash, A.N., & Tendulkar, S.P.
9	RAO	Baranec, C., Ziegler, C., Law, N.M., Morton, T., Riddle, R.L., Atkinson, D.,
9	RAO	Schonhut, J., & Crepp, J.
10	RAO	Ziegler, C., Law, N.M., Nicholas, M., Morton, T., Baranec, C., Riddle, R.L.,
10	RAO	Atkinson, D., Baker, A., Roberts, S., & Ciardi, D.R.
11	RAO	Schonhut-Stasik, J.S., Baranec, C., Huber, D., Ziegler, C., Atkinson, D., Gaidos,
11	RAO	E., Law, N.M., Riddle, R., Hagelberg, J., van der Marel, N., & Hodapp, K.W.
17	RAO	Ziegler, C., Law, N.M., Baranec, C., Riddle, R., Duev, D.A., Howard, W.,
17	RAO	Jensen-Clem, R., Kulkarni, S.R., Morton, T. & Salama, M.
18	RAO	Ziegler, C., Law, N.M., Baranec, C., Morton, T., Riddle, R., De Lee, N., Huber, D.,
18	RAO	Mahadevan, S. & Pepper, J.
19	RAO	Bowler, B.P., Hinkley, S., Ziegler, C., Baranec, C., Gizis, J.E., Law, N.M., Liu,
19	RAO	M.C., Shah, V.S., Shkolnik, E.L., Riaz, B. & Riddle, R.
20	RAO	Schonhut-Stasik, J.S., Huber, D., Baranec, C., Lamman, C., Salama, M., Jensen-Clem,
20	RAO	R., Duev, D.A., Riddle, R., Kulkarni, S.R. & Law, N.M.
21	RAO	Lamman, C., Baranec, C., Berta-Thompson, Z.K., Law, N.M., Schonhut-Stasik, J.,
21	RAO	Ziegler, C., Salama, M., Jensen-Clem, R., Duev, D.A., Riddle, R., Kulkarni, S.R.,
21	RAO	Winters, J.G. & Irwin, J.M.
24	RAO	Salama, M., Ou, J., Barance, C., Liu, M.C., Bowler, B.P., Barnes, P., Bonnet, M.,
24	RAO	Chun, M., Duev, D.A., Goebel, S., Hall, D., Jacobson, S., Jensen-Clem, R., Law,
24	RAO	N.M., Lockhart, C., Riddle, R., Situ, H., Warmbier, E. & Zhang, Z.
25	RAO	Salama, M., Ziegler, C., Baranec, C., Liu, M.C., Law, N.M., Riddle, R., Henry,
25	RAO	T.J., Winters, J.G., Jao, W.-C., Ou, J. & Ruiz, A.H.
28	RBR	Roberts, L.C., Jr., Turner, N.H., Bradford, L.W., ten Brummelaar, T., Oppenheimer,
28	RBR	B., Kuhn, J., Whitman, K., Perrin, M., et al.
33	RBR	Roberts, L.C., Jr., Gies, D.R., Parks, J.R., Grundstrom, E.D., McSwain, M.,
33	RBR	Berger, D., Mason, B., ten Brummelaar, T. & Turner, N.
42	RBR	Roberts, L.C., Jr., Rice, E.L., Beichman, C.A., Brenner, D., Burruss, R.,
42	RBR	Crepp, J.R., Dekany, R.G., Hillenbrand, L.A., Hinkley, S., Ligon, E.R.,
42	RBR	Lockhart, T.G., King, D., et al.
43	RBR	Roberts, L.C., Jr., Bouchez, A.H., Roberts, J.E., Burruss, R., Crepp, J.R., Mawet,
43	RBR	D., Ohara, C.M., Cromer, J.L., Dekany, R.G., Troy, M., Velur, V. & Li, J.
44	RBR	Roberts, L.C., Jr., Tokovinin, A., Mason, B.D., Riddle, R.L., Hartkopf, W.I.,
44	RBR	Law, N.M., & Baranec, Ch.
45	RBR	Roberts, L.C., Jr., Mason, B.D., Neyman, C.R., Wu, Y., Riddle, R.L., Shelton, J.,
45	RBR	Angione, J., Baranec, Ch., Bouchez, A., Bui, K., Burruss, R., Burse, M., et al.
46	RBR	Roberts, L.C., Jr., Oppenheimer, R., Crepp, J.R., Baranec, Ch., Beichman, C.A.,
46	RBR	Brenner, D., Burruss, R., Cady, E., Luszcz-Cook, S., Dekany, R.,
46	RBR	Hillenbrand, L.A., Hinkley, S., et al.
49	RBR	Roberts, L.C., Jr., Mason, B.D., Aguilar, J., Carson, J., Crepp, J., Beichman, C.,
49	RBR	Brenner, D., Burruss, R., Cady, E., Luszcz-Cook, S., Dekany, R., Hillenbrand, L.,
49	RBR	et al.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20577+2624	RAO 24		2012	1	103	0.6	6.90	11.40	G0V		205739.68+262418.3
20577+2624	RAO 24		2013	2	100	0.6	7.01	11.00	F9V		205739.67+262418.2
20577+2624	RAO 24		2015	6	94	0.7	7.01	11.00	F9V	NO	205739.67+262418.2
20577+2624	RAO 24		2018	7	88	0.8	7.01	11.00	F9V	NO	205739.67+262418.2

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

WDS 20577+2624 RAO 24 (HD 199598) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20577+2624 RAO 24 (HD 199598) : MEASURES

No records found.

WDS 20577+2624 (HD 199598) : VIRTUAL EYEPIECE

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

WDS 20577+2624 (HD 199598) : ALADIN DSS IMAGE @ 20^h 57^m 39.67^s +26° 24' 18.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20577+2624 RAO 24 (HD 199598) : NEIGHBORHOODS

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		20577+2624	RAO 24		88	0.8	1
Show		20584+2619	HDS2990	Aa,Ab	280	0.1	12
Show		20584+2619	FMR 247	AB	52	2.5	12
Show		20583+2609	STJ 51		315	1.2	18
Show		20582+2654	COU 833		253	2.4	31
Show		20585+2548	CVR 879		54	26.4	39
Show		21001+2555	GRV 401	BC	319	51.3	45
Show		21001+2555	GRV 401	AB	21	49.5	45
Show		21010+2616	RAO 620		99	0.4	47
Show		20563+2709	J 2331	AB	213	6.7	49
Show		20563+2709	J 2331	AC	254	8.5	49
Show		20565+2712	COU 832		261	1.3	50
Show		20552+2705	ES 511		47	8.5	53
Show		20535+2630	COU1177		14	0.2	57
Show		20534+2637	TDT2610		209	0.9	59
Show		20531+2630	GII 4	AB	140	8.0	62
Show		20531+2630	GII 4	AC	299	11.3	62
Show		20573+2520	POU5078		279	10.3	65
Show		20571+2521	FMR 232		317	3.6	65
Show		20589+2522	TDS1109		43	1.8	65
Show		20567+2520	POU5071		131	11.4	66
Show		21023+2554	SLE 511		8	8.5	70
Show		20560+2735	HO 460	AB	112	13.3	74
Show		20560+2735	HO 460	AC	257	37.7	74
Show		21001+2515	POU5089		22	10.6	77
Show		21009+2519	POU5095		296	9.4	79
Show		20560+2509	POU5067		25	8.3	79
Show		20592+2507	POU5085		177	8.2	80
Show		20547+2516	COU 830		168	0.9	80
Show		20596+2740	MLB 616		233	4.1	80
Show		21029+2711	J 1223	AB	295	4.7	82
Show		21029+2711	J 1223	AC	134	22.1	82
Show		20591+2504	POU5084		59	15.0	83
Show		20545+2736	MLB 714		202	4.3	84
Show		20549+2740	TDT2627		79	1.1	84
Show		21017+2516	POU5100		167	6.8	88
Show		20543+2740	TDT2619		312	0.5	88
Show		20511+2630	TDT2579		35	1.9	89
Show		21024+2523	TDS1112		32	1.2	89
Show		20552+2500	BKO 762		352	6.7	91
Show		21020+2515	POU5102	AB	312	18.3	92
Show		21020+2515	POU5103	AC	295	17.9	92
Show		21024+2518	POU5106		125	21.5	92
Show		21046+2624	GRV 409		19	61.3	94
Show		20550+2458	POU5059		322	7.2	94
Show		20569+2451	POU5073		325	15.0	94
Show		20525+2522	POU5052		323	15.8	94
Show		20507+2621	KPP3362		277	3.9	95
Show		20567+2450	BKO 765		270	6.0	96
Show		21031+2523	POU5111		147	12.6	96
Show		20565+2450	BKO 764		96	3.4	96

WDS 20577+2624 : COMPONENTS

	A
B	pa=88.2° sep=0.71"

20577+2624 A

Name	HD 199598	Coord arcsec 2000	205739.67+262418.2	Mag	7.01	Spectral class	F9V (yellow-white)
PmRA	267.00	PmDE	92.0	SAO	89320	HIP	103455
Tycho2	2180-01813-1	HD	199598	GC	29256	BD	BD+25 4422

Tycho2

Tycho2	2180-01813-1	Pflag		RAmdeg	314.41530649	DEmdeg	26.40507027
PmRA	266.6	PmDE	92.4	E RAmdeg	4	E DEmdeg	4
E pmRA	1.1	E pmDE	1.1	EpRAm	1991.49	EpDEm	1991.35
Num	16	Q RAmdeg	1.0	Q DEmdeg	0.8	Q pmRA	1.0
Q pmDE	0.6	BTmag	7.641	E BTmag	0.015	VTmag	7.007
E VTmag	0.010	Prox	999	TYC	T	HIP	103455
CCDM		RAdeg	314.41462556	DEdeg	26.40485528	EpRA 1990	1.76
EpDE 1990	1.63	E RAdeg	3.9	E DEdeg	4.0	Posflg
Corr	0.0

SAO

SAO	89320	DelFlag		RA1950		PmRA1950	0.0193
DE1950		PmDE1950	0.09	Vmag	6.9	SpType	G0
Double code		Source	70	CatNum	29256	DM	BD+25 4422
DMcomp		BDsup		HD	199598	M HD	0
GC	29256	RA1950rad	5.47804892	DE1950rad	0.45744696	PmRA2000	0.0194
PmDE2000	0.087

Hipparcos

Catalog	H	HIP	103455	Proxy		RAhms	20 57 39.50
DEdms	+26 24 17.4	Vmag	6.93	VarFlag		R Vmag	H
RAdeg	314.415	DEdeg	26.4048	AstroRef		Plx	30.11
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	199598	BD	BD+25 4422
CD		CP		Dm number	+25 4422	VIred	0.64
SpType	G0V	R SpType		Coord arcsec 2000	205739.50+262417.4

Hipparcos 2

HIP	103455	Sn	5	So	0	Nc	1
RArad	5.4875696615	DErad	0.4608515051	Plx	31.62	PmRA	273.28
PmDE	95.78	E RArad	0.37	E DErad	0.34	E Plx	0.55
E pmRA	0.46	E pmDE	0.36	Hpmag	7.0599	E Hpmag	0.001
SHp	0.01	VA	0	BV	0.584	E BV	0.005
VI	0.66

20577+2624 B

Coord arcsec 2000

205739.72+262418.2

Mag

Calc delta mag

3.99

Calc coord

yes