12270-0332 A    79AB

 
 
12H 27M 00.77S -03 32' 05.6" P.A. 86.5 SEP 0.37 MAG 8.89,10.03 SP G5 DIST. 63.05 PC (205.67 L.Y.)
 
 
Coord 2000
12270-0332
Discov num
A    79
Comp
AB
Coord arcsec 2000
12 27 00.77 -03 32 05.6
Date first
1900
Date last
2013
Obs
18
Pa first
90
Pa last
99
P.A. Now (θ)
86.5°
Sep first
0.4
Sep last
0.5
Sep. Now (ρ)
0.37"
Mag pri
8.89
Mag sec
10.03
delta mag (ΔM)
1.14
Spectral class
G5 (yellow)
Pri motion ra
+132
Sec motion ra
Pri motion dec
-095
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
12270-0332 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 12270-0332 A 79 AB 1900 2013 18 86 0.4 8.89 10.03 1.14 Y <===
Show 12270-0332 A 79 AB,C 1900 2007 5 323 30.8 8.51 14.50 5.99
Show 12270-0332 HJ 210 AB,D 1825 2013 19 146 24.8 8.51 10.20 1.69
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
HIP
60749
Tycho2
4944-00617-1
HD
108361
ADS
8552
BD
BD-02 3519
Distance
63.05
Distance ly
205.67
last precise pa
98.8
last precise sep
0.482
 
 
ORBITAL ELEMENTS
 
 
Period (P)99.44y Periastron (T)1986.83y Semi-major axis (a)0.469a
Eccentricity (e)0.918 Inclination (i)104° Longitude of periastron (ω)254.6°
Node (Ω)115.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1997
label rho theta
2000 0.330 96.6
2001 0.336 95.9
2002 0.342 95.2
2003 0.347 94.6
2004 0.351 94.0
2005 0.355 93.4
2006 0.358 92.8
2007 0.361 92.2
2008 0.364 91.6
2009 0.366 91.0
2010 0.367 90.4
2011 0.368 89.9
2012 0.369 89.3
2013 0.370 88.8
2014 0.370 88.2
2015 0.370 87.6
2016 0.370 87.1
2017 0.369 86.5
2018 0.369 86.0
2019 0.368 85.4
2020 0.366 84.8
2021 0.365 84.3
2022 0.363 83.7
2023 0.361 83.1
2024 0.359 82.5
2025 0.357 81.9
2026 0.354 81.3
2027 0.351 80.7
2028 0.349 80.1
2029 0.346 79.4
2030 0.342 78.8

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