12417-0127 STF1670AB (Porrima)

 
 
12h 41m 39.60s -01 26' 57.9" P.A. 0.4 sep 2.69 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
1585
Pa first
319
Pa last
3
P.A. Now (θ)
0.4°
Sep first
7.5
Sep last
2.5
Sep. Now (ρ)
2.69"
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 1585 0 2.7 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 1999 4 268 430.9 3.53 9.53 6.00
Sextuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
2.5
Precise sep
2.5
Common name
Porrima
Meaning
Roman goddess of childbirth
Other names
ARICH
Cdsa2 id
STF 1670 AB
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
Ra deg
12.694333333333333
De deg
-1.4494166666666666
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





wds12417-0127c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12417-0127 STF1670 AB 2007 1528 52 0.8 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2009 1535 28 1.2 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2010 1567 21 1.6 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2011 1569 16 1.6 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2012 1575 13 1.7 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2013 1576 10 2.0 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2014 1564 7 2.1 3.48 3.53 F0V F0V NOD 124139.60-012657.9
12417-0127 STF1670 AB 2015 1574 6 2.3 3.48 3.53 F0V+F0V NO 124139.60-012657.9
12417-0127 STF1670 AB 2016 1584 3 2.5 3.48 3.53 F0V+F0V NO 124139.60-012657.9

If you need more information about this double, apply for a data request form to the WDS.