07346+3153 CIA 29 Ba,Bb

Coord 2000	07346+3153		Discov num	CIA  29		Comp	Ba,Bb		Coord arcsec 2000	07 34 36.10 +31 53 18.5
Date first	2021		Date last	2021		Obs	12
Pa first	24		Pa last	301.7		P.A. Now (θ)	301.7°
Sep first	0.0		Sep last	0.003		Sep. Now (ρ)	0.003"
Mag pri	2.97		Mag sec			delta mag (ΔM)			Spectral class	A4V (white)
Pri motion ra	-206		Sec motion ra
Pri motion dec	-148		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		60198	07 34 36 +31 53 18	CIA 29 Aa,Ab	2021	16	293	0.0	1.93
Show	Castor	60198	07 34 36 +31 53 18	STF 1110 AB	2020	1514	53	5.4	1.93	2.97	1.04	Y
Show		60198	07 34 36 +31 53 18	STF 1110 AC	2020	157	164	71.6	1.93	9.83	7.90
Show		60198	07 34 36 +31 53 18	STF 1110 AD	2017	17	221	179.8	1.93	10.07	8.14
Show		60198	07 34 36 +31 53 18	CIA 29 Ba,Bb	2021	12	302	0.0	2.97				<===
Show		60198	07 34 36 +31 53 18	STF 1110 BC	2020	125	168	73.8	2.97	9.83	6.86
Show		60198	07 34 37 +31 52 10	STF 1110 CD	2015	6	244	154.9	9.83	10.07	0.24	Y

Sextuple system
4 estimated visually detectable stars in this system

Constellation	Gemini		SAO	60198		HIP	36850		Tycho2	2457-02407-2
HD	60178		HR	2890		GC	10120		ADS	6175
GL	Gl 278A		BD	BD+32 1581		Bayer	Alpha Geminorum		Bayer name	Alp Gem
Flamsteed	66 Geminorum		Flamsteed name	66 Gem		FK5	287		Distance	15.6
Distance ly	50.89		Bayer greek	α Gem

discov_num	notes	refcode
STF1110	alp Gem = 66 Gem = Castor. STFB 4. According to R.G. Aitken, this was	A__1935f
	discovered in 1719 by Bradley and Pound. Mt. Wilson spectral types	Bdy1832A
	A2,A2,M1. A and B are both SB1's with P = 9.21 d and 2.93 d.	Pnd1832A
	Castor A is also reported to exhibit x-ray and radio emission.
	See Baize & Petit (1989) catalog of doubles with variable component.	Baz1989d
	Star C (mag. 9.1, M1Ve) is the spectroscopic and detached eclipsing
	binary YY Gem (P = 0.81 d), 70" from the center of AB and in slow
	retrograde motion (cf., Heintz), so the object is sextuple.	Hei1960a
	AB: H 2 1.	MEv2010
	AB: Additional notes may be found in Fu et al. (1997)	McA1997
	AB: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 5.43 +/- 0.97, 4.27, and 4.28 Msun, respectively.	Mlk2012
	Components Aa, Ab, Ba and Bb determined to have masses of 2.74+/-0.11,	Ana2015
	0.37+/-0.09, 2.26+/-0.10 and 0.53+/-0.09 \Msun, respectively.
	Aa,Ba MYSTIC uniform disk dia. = 1.271 +/- 0.012, 0.994 +/- 0.014 mas.
	Aa,Ba MIRC-X uniform disk dia. = 1.273 +/- 0.003, 1.005 +/- 0.008 mas.
	Aa,Ab masses = 2.371 +/- 0.015, 0.3859+/- 0.0018 \msun.
	Ba,Bb masses = 1.789 +/- 0.016, 0.3865+/- 0.0020 \msun.	CIA2022d
	Many historic AB measures corrected and missing measures added.	CIA2022d

refcode	metd	author	reference
A__1935f	-	Aitken, R.G.	1935QB821.A3.......
A__1935f		The Binary Stars, 1935
Ana2015	N -	Andrade, M. & Docobo, J.A.	2015ASPC..496...94A
Ana2015		ASP Conference Series 496, 94, 2015
Baz1989d	-	Baize, P. & Petit, M.	1989A&AS...77..497B
Baz1989d		A&AS 77, 497, 1989
Bdy1832A	Ma -	Bradley, J.	1833MmRAS...5...13H
Bdy1832A		Memoirs, Oxford, 1832
Bdy1832A		(as cited by Herschel, MemRAS 5, 13, 1833)
CIA2022d	Kc+ j	Torres, G., Schaefer, G.H., Monnier, J.D., Anugu, N., Davies, C.L., Ennis, J.,	2022ApJ..941.....8T
CIA2022d	+orb	Farrington, C.D., Gardner, T., Klement, R., Kraus, S., Labdon, A., Lanthermann, C.,
CIA2022d		Le Bouquin, J.-B., Setterholm, B.R. & ten Brummelaar, T.
CIA2022d		ApJ 941, 8, 2022
Hei1960a	orb -	Heintz, W.D.	1960VeMun...5...87H
Hei1960a		Veroff. Sternw. Munchen 5, 87-114, 1960
McA1997	Sc j	Fu, H.-H., Hartkopf, W.I., Mason, B.D., McAlister, H.A., Dombrowski, E.G., &	1997AJ....114.1623F
McA1997		Franz, O.G.
McA1997		AJ 114, 1623, 1997
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
Pnd1832A	Ma -	Pound, J.	1833MmRAS...5...13H
Pnd1832A		from Bradley Memoirs, 1832
Pnd1832A		(as cited by Herschel, MemRAS 5, 13, 1833)

idgroup	discov	author
1	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
07346+3153	CIA 29	Ba,Bb	2021	12	302	0.0	2.97		A4V	NO	073436.10+315318.5

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