07346+3153 STF 1110 AB (Castor)
07h 34m 35.86s +31° 53' 17.8" P.A. 53.00 sep 5.4 mag 1.93,2.97 Sp A1V+A4Vm dist. 15.6 pc (50.89 l.y.)
| 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 |
1514 |
|
| Pa first |
303 |
|
Pa last |
52.6 |
|
P.A. Now (θ) |
50.7° |
|
| Sep first |
5.2 |
|
Sep last |
5.38 |
|
Sep. Now (ρ) |
5.566" |
|
| 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
V
(See Notes, Orbital solution, Proper motion indicates physical) |
|
This double is physical.
07346+3153 SYSTEM COMPONENTS
| 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
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Castor |
|
Var name |
YY Gem |
|
Constellation |
Gemini |
|
SAO |
60198 |
|
| HIP |
36850 |
|
Tycho2 |
2457-02407-1 |
|
Gaia DR2 |
892348694913021056 |
|
HD |
60179 |
|
| HR |
2891 |
|
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 |
|
| Other names |
Apollo, Castore |
|
ORBITAL ELEMENTS
| 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° | |
Notes | n | |
Reference | Doc2014g | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
65.3 |
3.868 |
| 2001 |
64.4 |
3.952 |
| 2002 |
63.5 |
4.035 |
| 2003 |
62.7 |
4.118 |
| 2004 |
61.9 |
4.200 |
| 2005 |
61.1 |
4.281 |
| 2006 |
60.4 |
4.361 |
| 2007 |
59.6 |
4.441 |
| 2008 |
58.9 |
4.519 |
| 2009 |
58.3 |
4.597 |
| 2010 |
57.6 |
4.673 |
| 2011 |
57.0 |
4.749 |
| 2012 |
56.4 |
4.823 |
| 2013 |
55.8 |
4.896 |
| 2014 |
55.2 |
4.968 |
| 2015 |
54.6 |
5.039 |
| 2016 |
54.1 |
5.109 |
| 2017 |
53.6 |
5.178 |
| 2018 |
53.0 |
5.246 |
| 2019 |
52.5 |
5.312 |
| 2020 |
52.1 |
5.377 |
| 2021 |
51.6 |
5.441 |
| 2022 |
51.1 |
5.504 |
| 2023 |
50.7 |
5.566 |
| 2024 |
50.2 |
5.626 |
| 2025 |
49.8 |
5.685 |
| 2026 |
49.3 |
5.744 |
| 2027 |
48.9 |
5.800 |
| 2028 |
48.5 |
5.856 |
| 2029 |
48.1 |
5.910 |
| 2030 |
47.7 |
5.964 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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