12417-0127 STF1670AB (Porrima)

 
 
12H 41M 39.60S -01 26' 57.9" P.A. 2 SEP 2.55 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
1720
Date last
2016
Obs
1584
Pa first
319
Pa last
3
P.A. Now (θ)
Sep first
7.5
Sep last
2.5
Sep. Now (ρ)
2.55"
Mag pri
3.48
Mag sec
3.53
delta mag (ΔM)
0.05
Spectral class
F0V+F0V (yellow-white/yellow-white)
Pri motion ra
-567
Sec motion ra
Pri motion dec
+008
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
12417-0127 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Porrima 138917 12417-0127 STF1670 AB 1720 2016 1584 2 2.6 3.48 3.53 0.05 Y <===
Show 138917 12417-0127 STF1670 AC 1889 2007 4 121 93.7 3.48 15.10 11.62
Show 138917 12417-0127 STF1670 AD 1826 2013 7 91 175.8 3.48 12.05 8.57
Show 138917 12417-0127 STF1670 AE 1851 2016 18 167 260.4 3.48 8.94 5.46
Show 138917 12417-0127 STF1670 AF 1909 2013 9 268 422.5 3.48 9.53 6.05
Show 138917 12417-0127 STF1670 BD 1880 1922 2 91 128.9 3.53 12.05 8.52
Show 138917 12417-0127 STF1670 BE 1884 1999 6 169 259.1 3.53 8.94 5.41
Show 138917 12417-0127 STF1670 BF 1909 1991 3 268 433.4 3.53 9.53 6.00
Sextuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name
Porrima
Meaning
Roman goddess of childbirth
Other names
ARICH
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
last precise pa
2.5
last precise sep
2.5
 
 
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 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2006
label rho theta
2000 1.493 260.5
2001 1.315 254.7
2002 1.123 246.9
2003 0.912 235.8
2004 0.680 217.4
2005 0.444 179.0
2006 0.409 104.5
2007 0.655 60.1
2008 0.924 41.3
2009 1.168 30.7
2010 1.389 23.7
2011 1.591 18.5
2012 1.777 14.4
2013 1.951 11.1
2014 2.114 8.4
2015 2.268 6.0
2016 2.414 3.9
2017 2.553 2.0
2018 2.685 0.4
2019 2.812 358.8
2020 2.933 357.5
2021 3.050 356.2
2022 3.162 355.0
2023 3.269 353.9
2024 3.373 352.8
2025 3.474 351.9
2026 3.571 350.9
2027 3.664 350.1
2028 3.755 349.2
2029 3.842 348.4
2030 3.927 347.7

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic