07346+3153 STF1110AB (Castore)

Coord 2000	07346+3153		Discov num	STF1110		Comp	AB		Coord arcsec 2000	07 34 35.86 +31 53 17.8
Date first	1778		Date last	2020		Obs	1431
Pa first	303		Pa last	53		P.A. Now (θ)	51.6°
Sep first	5.2		Sep last	5.4		Sep. Now (ρ)	5.44"
Mag pri	1.93		Mag sec	2.97		delta mag (ΔM)	1.04		Spectral class	A1V+A4Vm (white/white)
Pri motion ra	-206		Sec motion ra	-206
Pri motion dec	-148		Sec motion dec	-148
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	Castore	60198	07 34 36 +31 53 18	STF 1110 AB	2020	1431	52	5.4	1.93	2.97	1.04	Y	<===
Show		60198	07 34 36 +31 53 18	STF 1110 AC	2020	156	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	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

Quadruple system
4 visible stars in this system

Precise pa	52.6		Precise sep	5.38		Common name	Castore		Meaning	beaver (Castor)
Other names	CASTOR, APOLLO		Constellation	Gemini		SAO	60198		HIP	36850
Tycho2	2457-02407-1		Gaia DR2	892348694913021056		HD	60179		HR	2891
ADS	6175		GL	Gl 278A		BD	BD+32 1581		Bayer	Alpha Geminorum
Bayer name	Alp Gem		Flamsteed	66 Geminorum		Flamsteed name	66 Gem		Distance	15.6
Distance ly	50.89		last precise pa	52.6		last precise sep	5.38

Period (P)	459.8y		Periastron (T)	1958.7y		Semi-major axis (a)	6.755a
Eccentricity (e)	0.336		Inclination (i)	114.6°		Longitude of periastron (ω)	250.5°
Node (Ω)	41.2°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label rho theta 2000 3.868 65.3 2001 3.952 64.4 2002 4.035 63.5 2003 4.118 62.7 2004 4.200 61.9 2005 4.281 61.1 2006 4.361 60.4 2007 4.441 59.6 2008 4.519 58.9 2009 4.597 58.3 2010 4.673 57.6 2011 4.749 57.0 2012 4.823 56.4 2013 4.896 55.8 2014 4.968 55.2 2015 5.039 54.6 2016 5.109 54.1 2017 5.178 53.6 2018 5.246 53.0 2019 5.312 52.5 2020 5.377 52.1 2021 5.441 51.6 2022 5.504 51.1 2023 5.566 50.7 2024 5.626 50.2 2025 5.685 49.8 2026 5.744 49.3 2027 5.800 48.9 2028 5.856 48.5 2029 5.910 48.1 2030 5.964 47.7		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
07346+3153	STF1110	AB	2007	1341	60	4.6	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2008	1345	59	4.6	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2009	1355	58	4.6	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2010	1373	58	4.7	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2011	1390	58	4.8	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2012	1393	56	4.8	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2014	1412	55	4.6	1.93	2.97	A1V A2Vm	NOD	073436.00+315319.1
07346+3153	STF1110	AB	2015	1401	55	5.2	1.93	2.97	A1V+A4Vm	NO	073436.00+315319.1
07346+3153	STF1110	AB	2016	1410	54	5.0	1.93	2.97	A1V+A4Vm	NO	073435.86+315317.8
07346+3153	STF1110	AB	2017	1413	54	5.2	1.93	2.97	A1V+A4Vm	NO	073435.86+315317.8
07346+3153	STF1110	AB	2018	1421	53	5.4	1.93	2.97	A1V+A4Vm	NO	073435.86+315317.8
07346+3153	STF1110	AB	2019	1422	53	5.4	1.93	2.97	A1V+A4Vm	NO	073435.86+315317.8

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