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
 
 
Precise pa
98.8
Precise sep
0.482
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)232y Periastron (T)1986.63y Semi-major axis (a)0.748a
Eccentricity (e)0.962 Inclination (i)100.4° Longitude of periastron (ω)250°
Node (Ω)113.7° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.366 102.0
2001 0.377 101.7
2002 0.388 101.4
2003 0.398 101.1
2004 0.408 100.9
2005 0.417 100.6
2006 0.426 100.4
2007 0.435 100.1
2008 0.443 99.9
2009 0.451 99.7
2010 0.458 99.5
2011 0.465 99.3
2012 0.472 99.1
2013 0.479 98.9
2014 0.485 98.7
2015 0.491 98.5
2016 0.497 98.4
2017 0.502 98.2
2018 0.508 98.0
2019 0.513 97.9
2020 0.518 97.7
2021 0.523 97.5
2022 0.527 97.4
2023 0.532 97.2
2024 0.536 97.1
2025 0.540 96.9
2026 0.544 96.8
2027 0.548 96.6
2028 0.551 96.5
2029 0.555 96.4
2030 0.558 96.2

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

grafico orbita





wds12270-0332e.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
12270-0332 A 79 AB 2004 17 101 0.4 8.89 10.03 G5 OD 122700.77-033205.6
12270-0332 A 79 AB 2013 18 99 0.5 8.89 10.03 G5 NOD 122700.77-033205.6

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