09123+1500 FIN 347 Aa,Ab

Coord 2000	09123+1500		Discov num	FIN 347		Comp	Aa,Ab		Coord arcsec 2000	09 12 17.55 +14 59 45.7
Date first	1959		Date last	2021		Obs	127
Pa first	156		Pa last	167.8		P.A. Now (θ)	167.8°
Sep first	0.1		Sep last	0.114		Sep. Now (ρ)	0.114"
Mag pri	7.20		Mag sec	7.20		delta mag (ΔM)	0		Spectral class	G8V (yellow)
Pri motion ra	-524		Sec motion ra
Pri motion dec	+246		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		98427	09 12 18 +14 59 46	FIN 347 Aa,Ab	2021	127	168	0.1	7.20	7.20	0.00	Y	<===
Show		98427	09 12 18 +14 59 46	BUP 125 AB	2022	7	117	90.5	6.56	14.17	7.61
Show	Pi1 Cnc	98427	09 12 18 +14 59 46	STT 569 AC	2015	16	214	204.7	6.56	10.40	3.84
Show		98427	09 12 18 +14 59 46	WIL 1 AE	2022	2	262	44.7	6.56	17.00	10.44
Show		98427	09 12 18 +14 59 46	HLA 10 AF	2018	3	290	4.6	4.70	12.60	7.90
Show			09 12 15 +14 59 40	BUG 16 Ea,Eb	2004	1	291	0.5	14.70	14.90	0.20

Septuple system
5 estimated visually detectable stars in this system

Constellation	Cancer		SAO	98427		HIP	45170		Tycho2	0825-01543-1
HD	79096		HR	3650		GC	12693		BD	BD+15 2003
Bayer	Pi 1 Cancri		Bayer name	Pi1 Cnc		Flamsteed	81 Cancri		Flamsteed name	81 Cnc
Distance	20.36		Distance ly	66.41		Bayer greek	π1 Cnc

Period (P)	2.7055y	± 0.0002	Periastron (T)	1979.9819y	± 0.0026	Semi-major axis (a)	0.113a	± 0
Eccentricity (e)	0.44	± 0.001	Inclination (i)	123.8°	± 0.3	Longitude of periastron (ω)	352.2°	± 0.6
Node (Ω)	318°	± 0.3	Notes	n		Reference	Msn2021a
Equinox			Last observation	2021		Grade	1	(1=Definitive, 9=Indet.)

label theta rho 2000 151.8 0.149 2001 111.8 0.107 2002 222.6 0.055 2003 141.7 0.162 2004 68.3 0.055 2005 174.6 0.098 2006 131.9 0.154 2007 330.5 0.061 2008 156.6 0.138 2009 119.2 0.125 2010 258.6 0.052 2011 145.5 0.159 2012 93.0 0.074 2013 187.2 0.080 2014 135.9 0.160 2015 3.3 0.049 2016 162.4 0.124 2017 124.9 0.139 2018 291.5 0.059 2019 149.5 0.153 2020 106.7 0.096 2021 207.4 0.062 2022 139.7 0.162 2023 48.0 0.048 2024 169.7 0.108 2025 129.6 0.150 2026 317.1 0.064 2027 154.0 0.144 2028 115.6 0.116 2029 239.0 0.052 2030 143.5 0.161 2031 81.9 0.063 2032 179.9 0.090 2033 133.8 0.157 2034 344.3 0.056 2035 159.2 0.132 2036 122.1 0.132 2037 275.2 0.055 2038 147.4 0.157 2039 100.3 0.085 2040 195.5 0.071 2041 137.7 0.161 2042 23.9 0.046 2043 165.6 0.117 2044 127.2 0.145 2045 304.1 0.062 2046 151.6 0.149 2047 111.3 0.106 2048 220.8 0.056 2049 141.5 0.162 2050 66.4 0.054

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. Measures: green=micrometric, blue=interferometric, purple=photographic

discov_num	notes	refcode
FIN 347	Aa,Ab: pi 1 Cnc = 81 Cnc.
	1981.358: This observation was incorrectly attributed to ADS 7158 by	Tok1982a
	Tokovinin (1982a) (noted in Tokovinin 1982b)	Tok1982b
	1983.9371, 1983.9372: Interferometric observations indicate that	Wor1983
	Finsen's 1965 orbit (see Worley & Heintz, 1983) must be revised.	Bnu1984
	1990.9166: Residuals (4.0 deg in theta, 0".007 in rho) to the orbit of
	Hartkopf (1989) are only fair, due to a combination of large zenith	Hrt1989
	distance and close angular separation at the time of this observation.
	A combined astrometric/spectroscopic orbital solution is given by
	Mason et al (1996).	Msn1996a
	Reversed Delta m and slightly larger parallax/smaller masses than in	Msn1996a
	the speckle-spectroscopic study by Mason et al.(1996).
	Pourbaix gives combined solution for this resolved SB2, yielding
	orbital parallaxes and component masses.	Pbx2000b
	Aa,Ab: Combined solution orbit. Mass_a = 0.983 +- 0.045 Msun,
	Mass_b = 0.903 +- 0.049 Msun, orbital parallax = 48.78 +- 2.36 mas.	Msn2012a
	Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 1.80 +/- 0.25, 1.86, and 0.91 Msun, respectively.	Mlk2012
BUP 125	AB: Due to the high proper motion of the A component, a later
	observation of this pair by Soulie was incorrectly entered as a new	Sle1986a
	component, SLE 478AD.
STT 569	AC: Optical pair, based on study of relative motion of the
	components using the method of apparent motion parameters.	Kiy2008
WIL 1	AE: CPM pair. Using data from 2MASS, Wilson et al. (2001) derive a	Wil2001
	spectral type of L8V and mass 40-74Mjup for the companion (called
	Gl 337C in that paper). They also note that the C and D components for
	the system appear to be background objects without CPM to the AB pair.
BUG 16	Ea,Eb: Burgasser et al (2005) resolved the E component (called Gl 337C
	in the paper) into a 0.53" pair of near-equal magnitude. At a distance
	to the system of 20.5 +/- 0.4pc, the close pair has a physical
	separation of 10.9 +/- 0.6 au. Period of the pair is estimated at
	140-180y. Primary is L8; secondary is possibly early- or mid-T dwarf.	Bug2005

refcode	metd	author	reference
Bnu1984	S j	Bonneau, D., Carquillat, J.M., & Vidal, J.L.	1984A&AS...58..729B
Bnu1984		A&AS 58, 729, 1984
Bug2005	A j	Burgasser, A.J., Kirkpatrick, J.D., & Lowrance, P.J.	2005AJ....129.2849B
Bug2005		AJ 129, 2849, 2005
Hrt1989	orb -	Hartkopf, W.I., McAlister, H.A., & Franz, O.G.	1989AJ.....98.2275B
Hrt1989		AJ 98, 1014, 1989
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008
Mlk2012	not -	Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.	2012A&A...546A..69M
Mlk2012		A&A 546, A69, 2012
Msn1996a	Sc j	Mason, B.D., McAlister, H.A., & Hartkopf, W.I.	1996AJ....112..276M
Msn1996a	+orb	AJ 112, 276, 1996
Msn2012a	orb -	Mason, B.D. & Hartkopf, W.I.	2012IAUDS.178....1M
Msn2012a		Inf. Circ. 178, 1, 2012
Msn2021a	orb -	Mason, B.D.	2021IAUDS.204....1M
Msn2021a		Inf. Circ. 204, 1, 2021
Pbx2000b	orb -	Pourbaix, D.	2000A&AS..145..215P
Pbx2000b		A&AS 145, 215, 2000
Sle1986a	Pa -	Soulie, G.	.
Sle1986a		Bull. Inf. Cent. Donnes Stell. #30, 91, 1986
Tok1982a	Ig j	Tokovinin, A.A.	1982SvAL....8...22T
Tok1982a		SvAL 8, 22, 1982 (Pisma Astron. Zhur. 8, 43, 1982)
Tok1982b	Ig j	Tokovinin, A.A.	1982SvAL....8...99T
Tok1982b		SvAL 8, 99, 1982 (Pisma Astron. Zhur. 8, 187, 1982)
Wil2001	E2 -	Wilson, J.C., Kirkpatrick, J.D., Gizis, J.E., Skrutskie, M.F., Monet, D.G., &	2001AJ....122.1989W
Wil2001		Houck, J.R.
Wil2001		AJ 122, 1989, 2001
Wil2001		(additional data on primary magnitudes and to derive position angles extracted
Wil2001		from ALADIN and 2MASS data)
Wor1983	-	Worley, C.E. & Heintz, W.D.	1983PUSNO..24g...1W
Wor1983		Pub. USNO 24, Pt. 7, 1983 (Fourth Orbit Catalog)

discov	author
BNU	Bonneau, D.
BNU	Bonneau, D., Chesneau, O., Mourard, D., Berio, Ph., Clausse, J.M., Delaa, O.,
BNU	Marcotto, A., Perraut, K., Roussel, A., Spang,A., Stee, Ph., Tallon-Bosc,I. et al.
BUG	Burgasser, A.J., Kirkpatrick, J.D., Cutri, R.M., McCallon, H., Kopan, G., Gizis,
BUG	J.E., Liebert, J., Reid, I.N., et al.
BUG	Burgasser, A.J., Kirkpatrick, J.D., Cruz, K.L. Reid, I.N., Leggett, S.K., Liebert,
BUG	J., Burrows, A., & Brown, M.E.
BUG	Burgasser, A.J., Luk, C., Dhital, S., Bardalez Gagliuffi, D., Nicholls, C.P.,
BUG	Prato, L., West, A.A., & Lepine, S.
BUG	Aganze, Ch., Burgasser, A.J., Faherty, J.K., Choban, C., Escala, I., Lopez, M.A.,
BUG	Jin, Y., Tamiya, T., Tallis, M., & Rockward, W.
HLA	Hirsch, L.A., Ciardi, D.R., Howards, A.W., Marcy, G.W., Ruane, G., Gonzalez, E.,
HLA	ApJ 878, 50, 2019
HLA	Hirsch, L.A., Rosenthal, L., Fulton, B.J., Howard, A.W., Ciardi, D.R., Marcy, G.W.,
HLA	Nielsen, E., Petigura, E.A., de Rosa, R.J., Isaacson, H., Weiss, L.M., Sinukoff, E.
HRT	Hartkopf, W.I., McAlister, H.A., Mason, B.D., ten Brummelaar, T.A., Roberts, J.C.,
HRT	Jr., Turner, N.H., & Wilson, J.W.
HRT	Hartkopf, W.I., W.I., Mason, B.D., Gies, D.R., ten Brummelaar, T.,
HRT	McAlister, H.A., Moffat, A.F.J., Shara, M.M., & Wallace, D.J.
HRT	Mason, B.D., Martin, C., Hartkopf, W.I., Barry, D.J., Germain, M.E.,
HRT	Douglass, G.G., Worley, C.E., ten Brummelaar, T.A., et al.
HRT	Hartkopf, W.I., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., Turner, N.H.,
HRT	ten Brummelaar, T.A., Prieto, C.M., Ling, J.F., & Franz, O.G.
HRT	Mason, B.D., Henry, T.J., Soderblom. D.R., Hartkopf, W.I., Holdenreid, E.R.,
HRT	Rafferty, T.J., & Urban, S.E.
KIY	Kiyaeva, O.V., Zhuchkov, R.Ya., Malogolovets, E.V., Orlov, V.V., Glukhova, A.V.,
KIY	Balega, Yu., Yu. & Bikmaev, I.F.
MSN	Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G.,
MSN	ten Brummelaar, T.A., & McAlister, H.A.
MSN	Mason, B.D., Martin, C., Hartkopf, W.I., Barry, D.J., Germain, M.E.,
MSN	Douglass, G.G., Worley, C.E., ten Brummelaar, T.A., et al.
MSN	Mason, B.D., Hartkopf, W.I., Raghavan, D., Subasavage, J.P., Roberts, L.C., Jr.,
MSN	Turner, N.H., & ten Brummelaar, T.A.
PBX	Pourbaix, D., Nidever, D., McCarthy, C., Butler, R.P., Tinney, C.G., Marcy, G.W.,
PBX	Jones, H.R.A., Penny, A.J., et al.
PBX	Pourbaix, D., Tokovinin, A.A., & Batten, A.H., Fekel, F.C., Hartkopf, W.I.,
PBX	Levato, H., Morrell, N.I., Torres, G., & Udry, S.
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.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	dm_number	notes	coord_arcsec_2000
09123+1500	FIN 347	Aa,Ab	2005	104	315	0.2	7.20	7.20	G8V	+15 2003	NOD	091217.87+145943.6
09123+1500	FIN 347	Aa,Ab	2007	106	324	0.1	7.20	7.20	G8V	+15 2003	NOD	091217.87+145943.6
09123+1500	FIN 347	Aa,Ab	2014	113	309	0.1	7.20	7.20	G8V	+15 2003	NO	091217.87+145943.6
09123+1500	FIN 347	Aa,Ab	2015	115	168	0.1	7.20	7.20	G8V	+15 2003	NO	091217.87+145943.6
09123+1500	FIN 347	Aa,Ab	2016	116	155	0.1	7.20	7.20	G8V	+15 2003	NO	091217.55+145945.7
09123+1500	FIN 347	Aa,Ab	2018	118	150	0.2	7.20	7.20	G8V	+15 2003	NO	091217.55+145945.7
09123+1500	FIN 347	Aa,Ab	2019	122	110	0.1	7.20	7.20	G8V	+15 2003	NO	091217.55+145945.7
09123+1500	FIN 347	Aa,Ab	2021	125	168	0.1	7.20	7.20	G8V	+15 2003	NO	091217.55+145945.7

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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
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Show name coord_2000 discov# comp pa sep dist(') Show 09123+1500 FIN 347 Aa,Ab 168 0.1 0 Show 09123+1500 BUP 125 AB 117 90.5 0 Show 09123+1500 STT 569 AC 214 204.7 0 Show 09123+1500 WIL 1 AE 262 44.7 0 Show 09123+1500 HLA 10 AF 290 4.6 0 Show 09123+1500 BUG 16 Ea,Eb 291 0.5 1 Show 09126+1525 DBR 302 325 3.0 26 Show 09096+1511 OCC 800 -1 0.1 41 Show 09147+1526 SLE 483 213 14.4 44 Show 09104+1424 GWP1143 74 22.8 45 Show 09100+1530 BRT1263 311 4.9 45 Show 09092+1514 STF1317 63 7.5 47 Show 09088+1521 SLE 476 250 12.3 54 Show 09157+1426 SLW 338 329 9.9 60 Show 09143+1403 SLE 480 288 9.4 64 Show 09156+1551 TDS6429 154 0.5 71 Show 09144+1608 STF1325 77 16.9 75 Show 09096+1606 A 2475 174 0.4 77 Show 09161+1408 TOK 526 338 443.5 77 Show 09118+1617 BPM 556 203 9.0 78 Show 09068+1512 RAO 233 298 1.1 80 Show 09068+1513 DAM1535 108 3.8 82 Show 09071+1533 HJ 118 320 12.5 84 Show 09175+1419 ROE 35 274 11.4 88 Show 09064+1516 OCC9147 -1 0.0 88 Show 09074+1555 SLW 329 64 43.1 90 Show 09159+1346 CVR 525 72 8.4 91 Show 09127+1632 STF1322 54 1.8 92 Show 09186+1516 GWP1157 347 8.7 93 Show 09062+1529 GWP1137 177 9.7 93 Show 09056+1447 OCC1014 -1 0.4 98 Show 09088+1625 HDS1328 AB 143 4.1 99 Show 09088+1625 FYM 227 AC 158 18.5 99 Show 09118+1641 GRV 780 97 18.3 102 Show 09062+1552 HDS1323 0 0.2 103 Show 09185+1547 HEI 150 261 0.3 103 Show 09051+1511 OCC9146 -1 0.2 105 Show 09095+1321 HU 867 181 2.3 107 Show 09152+1643 BPM 557 35 88.1 112 Show 09103+1650 SLE 882 89 8.7 114 Show 09044+1451 HEI 57 132 1.8 115 Show 09044+1521 GWP1134 51 4.9 117 Show 09193+1403 GWP1158 117 12.4 117 Show 09041+1435 UC 129 251 47.8 122 Show 09135+1259 CVR1203 7 3.3 123 Show 09043+1418 HJ 115 121 18.9 124 Show 09043+1413 GWP1133 286 25.4 126 Show 09208+1538 A 2476 336 0.4 129 Show 09077+1651 CVR 521 0 19.2 130 Show 09150+1253 HJ 2490 67 21.4 133 Show 09078+1702 OCC 616 -1 0.1 138

	A	Ab	B	C	E	Eb
Ab	pa=167.8° sep=0.11"
B	pa=117.1° sep=90.50"	pa=117.0° sep=90.43"
C	pa=213.7° sep=204.73"	pa=213.7° sep=204.65"	pa=236.4° sep=233.17"
E	pa=261.6° sep=41.89"	pa=261.8° sep=41.89"	pa=286.1° sep=126.96"	pa=23.7° sep=179.37"
Eb	pa=262.0° sep=42.35"	pa=262.1° sep=42.36"	pa=286.1° sep=127.49"	pa=23.6° sep=179.35"	pa=291.0° sep=0.53"
F	pa=290.1° sep=4.63"	pa=291.3° sep=4.69"	pa=296.8° sep=95.10"	pa=32.4° sep=203.69"	pa=78.3° sep=37.88"	pa=78.7° sep=38.33"

Coord arcsec 2000	091217.55+145945.7		Mag	6.56		Spectral class	G9V (yellow)		PmRA	-524.00
PmDE	246.0		SAO	98427		HIP	45170		Tycho2	0825-01543-1
HD	79096		HR	3650		GC	12693		BD	BD+15 2003
Bayer	Pi 1 Cancri		Bayer name	Pi1		Flamsteed	81 Cancri		Flamsteed name	81 Cnc

Tycho2	0825-01543-1		Pflag			RAmdeg	138.07312658		DEmdeg	14.99603732
PmRA	-522.8		PmDE	245.8		E RAmdeg	4		E DEmdeg	5
E pmRA	0.8		E pmDE	0.8		EpRAm	1991.29		EpDEm	1991.14
Num	20		Q RAmdeg	1.2		Q DEmdeg	1.0		Q pmRA	1.4
Q pmDE	1.0		BTmag	7.403		E BTmag	0.015		VTmag	6.565
E VTmag	0.010		Prox	999		TYC	T		HIP	45170
CCDM			RAdeg	138.07436361		DEdeg	14.99548111		EpRA 1990	1.77
EpDE 1990	1.85		E RAdeg	3.7		E DEdeg	4.5		Posflg
Corr	0.2

SAO	98427		DelFlag			RA1950			PmRA1950	-0.0361
DE1950			PmDE1950	0.242		Vmag	6.4		SpType	G5
Double code			Source	70		CatNum	12693		DM	BD+15 2003
DMcomp			BDsup			HD	79096		M HD	0
GC	12693		RA1950rad	2.39790125		DE1950rad	0.26526642		PmRA2000	-0.036
PmDE2000	0.248

Catalog	H		HIP	45170		Proxy			RAhms	09 12 17.87
DEdms	+14 59 43.6		Vmag	6.49		VarFlag			R Vmag	H
RAdeg	138.074		DEdeg	14.9954		AstroRef			Plx	48.83
CCDM	-524.47		N CCDM	I		Nsys	1		Ncomp	1
MultFlag			Source			Qual	S		M HIP
Theta			Rho			HD			BD	BD+15 2003
CD			CP			Dm number	+15 2003		VIred	0.78
SpType	G9V		R SpType			Coord arcsec 2000	091217.87+145943.6

HIP	45170		Sn	5		So	0		Nc	1
RArad	2.4098535759		DErad	0.2617198246		Plx	49.11		PmRA	-524.4
PmDE	245.64		E RArad	0.44		E DErad	0.27		E Plx	0.54
E pmRA	0.6		E pmDE	0.29		Hpmag			E Hpmag	0.0006
SHp	0.007		VA	0		BV	0.731		E BV	0.004
VI	0.78

Coord arcsec 2000

091217.55+145945.6

Mag

7.2

Coordinate calculated

yes

Coord arcsec 2000	091223.11+145904.5		Mag	14.17		PmRA	26.00		PmDE	-29.0
Delta magnitude	6.97		Coordinate calculated	yes

Coord arcsec 2000	091209.71+145655.4		Mag	10.4		PmRA	-12.00		PmDE	12.0
Delta magnitude	3.2		Coordinate calculated	yes

Coord arcsec 2000	091214.69+145939.6		Coord calc	091214.49+145939.5		Mag	14.7		Composed magnitude	17
Spectral class	L8 (very deep red)		PmRA	-566.00		PmDE	279.0		Delta magnitude	7.5

Coord arcsec 2000	091214.66+145939.8		Mag	14.9		Spectral class	T (brown dwarf)		Delta magnitude	7.7
Coordinate calculated	yes

Coord arcsec 2000

091217.25+145947.3

Mag

12.6

Delta magnitude

5.4

Coordinate calculated

yes