12417-0127 STF 1670 AB (Porrima)

 
 
12h 41m 39.60s -01° 26' 57.9" P.A. 356.00 sep 2.9 mag 3.48,3.53 Sp F0V+F0V dist. 11.68 pc (38.1 l.y.)
 
 
Coord 2000 12417-0127 Discov num STF1670 Comp AB Coord arcsec 2000 12 41 39.60 -01 26 57.9
Date first 1756 Date last 2021 Obs 1611
Pa first 324 Pa last 355.7 P.A. Now (θ) 353.9°
Sep first 6.5 Sep last 2.87 Sep. Now (ρ) 3.269"
Mag pri 3.48 Mag sec 3.53 delta mag (ΔM) 0.05 Spectral class F0V+F0V (yellow-white/yellow-white)
Pri motion ra -601 Sec motion ra -534
Pri motion dec +084 Sec motion dec -064
Notes N O (See Notes, Orbital solution)
rPM=0.268 (< 0.3, Physical double)
This double is physical.
 
 
12417-0127 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Porrima 138917 12 41 40 -01 26 58 STF 1670 AB 2021 1611 356 2.9 3.48 3.53 0.05 Y <===
Show 138917 12 41 40 -01 26 58 STF 1670 AC 2015 5 121 99.4 3.48 15.10 11.62
Show 138917 12 41 40 -01 26 58 STF 1670 AD 2015 8 90 177.6 3.48 12.05 8.57
Show 138917 12 41 40 -01 26 58 STF 1670 AE 2016 18 167 260.4 3.48 8.94 5.46
Show 138917 12 41 40 -01 26 58 STF 1670 AF 2015 10 267 422.3 3.48 9.53 6.05
Show 12 41 40 -01 26 58 STF 1670 BD 2015 3 90 177.8 3.53 12.05 8.52
Show 138918 12 41 40 -01 26 58 STF 1670 BE 2015 7 167 260.0 3.53 8.94 5.41
Show 12 41 40 -01 26 58 STF 1670 BF 2015 5 268 422.0 3.53 9.53 6.00
Sextuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Porrima Var name NSV5859 Vir Constellation Virgo SAO 138917
HIP 61941 Tycho2 4949-01120-1 HD 110379 HR 4825
GC 17270 ADS 8630 GL Gl 482A BD BD-00 2601
Bayer Gamma Virginis Bayer name Gam Vir Flamsteed 29 Virginis Flamsteed name 29 Vir
Distance 11.68 Distance ly 38.1 Bayer greek γ Vir
Other names ARICH
Meaning Roman goddess of childbirth
 
 
ORBITAL ELEMENTS
 
 
Period (P)169.104y± 0.011 Periastron (T)2005.511y± 0.0019 Semi-major axis (a)3.639a± 0.008
Eccentricity (e)0.8815± 0.00018 Inclination (i)149.46°± 0.16 Longitude of periastron (ω)255.02°± 0.37
Node (Ω)35.34°± 0.42 Notesn ReferenceSca2007c
Equinox2000 Last observation2006 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 260.5 1.493
2001 254.7 1.315
2002 246.9 1.123
2003 235.8 0.912
2004 217.4 0.680
2005 179.0 0.444
2006 104.5 0.409
2007 60.1 0.655
2008 41.3 0.924
2009 30.7 1.168
2010 23.7 1.389
2011 18.5 1.591
2012 14.4 1.777
2013 11.1 1.951
2014 8.4 2.114
2015 6.0 2.268
2016 3.9 2.414
2017 2.0 2.553
2018 0.4 2.685
2019 358.8 2.812
2020 357.5 2.933
2021 356.2 3.050
2022 355.0 3.162
2023 353.9 3.269
2024 352.8 3.373
2025 351.9 3.474
2026 350.9 3.571
2027 350.1 3.664
2028 349.2 3.755
2029 348.4 3.842
2030 347.7 3.927


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



 
 


wds12417-0127c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic