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
Meaning beaver (Castor)
 
 
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° Notesn ReferenceDoc2014g
Equinox2000 Last observation2014 Grade3(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


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



 
 


wds07346%2B3153e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic