12301-0653 A 2780 Aa,Ab

 
 
12h 30m 09.01s -06° 53' 04.7" P.A. 333.00 sep 0.1 mag 10.40,10.40 Sp G0
 
 
Coord 2000 12301-0653 Discov num A  2780 Comp Aa,Ab Coord arcsec 2000 12 30 09.01 -06 53 04.7
Date first 1914 Date last 2021 Obs 13
Pa first 211 Pa last 332.5 P.A. Now (θ) 332.5°
Sep first 0.6 Sep last 0.084 Sep. Now (ρ) 0.084"
Mag pri 10.40 Mag sec 10.40 delta mag (ΔM) 0 Spectral class G0 (yellow)
Pri motion ra -069 Sec motion ra
Pri motion dec -022 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
12301-0653 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 138818 12 30 09 -06 53 05 A 2780 Aa,Ab 2021 13 333 0.1 10.40 10.40 0.00 Y <===
Show 138818 12 30 09 -06 53 05 UC 2350 AB 2016 6 333 49.3 9.56 15.99 6.43
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Virgo SAO 138818 Tycho2 4954-00732-1 Gaia DR2 3583445425854537216
HD 108808 ADS 8574
 
 
ORBITAL ELEMENTS
 
 
Period (P)297y Periastron (T)2018.728y Semi-major axis (a)0.494a
Eccentricity (e)0.932 Inclination (i)119.6° Longitude of periastron (ω)116.3°
Node (Ω)174.4° Notes ReferenceTok2019h
Equinox2000 Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 194.0 0.316
2001 193.4 0.308
2002 192.9 0.298
2003 192.2 0.289
2004 191.6 0.279
2005 190.9 0.268
2006 190.1 0.257
2007 189.3 0.246
2008 188.4 0.234
2009 187.3 0.221
2010 186.2 0.207
2011 184.8 0.193
2012 183.3 0.177
2013 181.4 0.160
2014 179.1 0.141
2015 175.9 0.120
2016 171.3 0.095
2017 162.9 0.065
2018 135.5 0.029
2019 16.0 0.030
2020 345.4 0.055
2021 331.7 0.069
2022 322.1 0.079
2023 314.5 0.088
2024 308.2 0.095
2025 302.7 0.102
2026 298.0 0.109
2027 293.8 0.116
2028 290.1 0.122
2029 286.7 0.129
2030 283.7 0.135


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



 
 


wds12301-0653a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic