12270-0332 A 79 AB
12h 27m 00.77s -03° 32' 05.6" P.A. 98.00 sep 0.5 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 |
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Coord arcsec 2000 |
12 27 00.77 -03 32 05.6 |
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Date first |
1900 |
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Date last |
2017 |
|
Obs |
19 |
|
Pa first |
90 |
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Pa last |
98.1 |
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P.A. Now (θ) |
98.1° |
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Sep first |
0.4 |
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Sep last |
0.504 |
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Sep. Now (ρ) |
0.504" |
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Mag pri |
8.89 |
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Mag sec |
10.03 |
|
delta mag (ΔM) |
1.14 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+132 |
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Sec motion ra |
|
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Pri motion dec |
-095 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
12270-0332 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
138788 |
12 27 01 -03 32 06 |
A 79 AB |
2017 |
19 |
98 |
0.5 |
8.89 |
10.03 |
1.14 |
Y |
<=== |
Show |
|
138788 |
12 27 01 -03 32 06 |
A 79 AB,C |
2015 |
8 |
322 |
32.1 |
8.51 |
14.50 |
5.99 |
|
|
Show |
HD 108361 |
138788 |
12 27 01 -03 32 06 |
HJ 210 AB,D |
2015 |
22 |
146 |
24.8 |
8.51 |
10.20 |
1.69 |
|
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Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Virgo |
|
SAO |
138788 |
|
HIP |
60749 |
|
Tycho2 |
4944-00617-1 |
|
Gaia DR2 |
3693142837668713472 |
|
HD |
108361 |
|
ADS |
8552 |
|
BD |
BD-02 3519 |
|
Distance |
63.05 |
|
Distance ly |
205.67 |
|
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° | |
Notes | n | |
Reference | Tok2017c | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
102.0 |
0.366 |
2001 |
101.7 |
0.377 |
2002 |
101.4 |
0.388 |
2003 |
101.1 |
0.398 |
2004 |
100.9 |
0.408 |
2005 |
100.6 |
0.417 |
2006 |
100.4 |
0.426 |
2007 |
100.1 |
0.435 |
2008 |
99.9 |
0.443 |
2009 |
99.7 |
0.451 |
2010 |
99.5 |
0.458 |
2011 |
99.3 |
0.465 |
2012 |
99.1 |
0.472 |
2013 |
98.9 |
0.479 |
2014 |
98.7 |
0.485 |
2015 |
98.5 |
0.491 |
2016 |
98.4 |
0.497 |
2017 |
98.2 |
0.502 |
2018 |
98.0 |
0.508 |
2019 |
97.9 |
0.513 |
2020 |
97.7 |
0.518 |
2021 |
97.5 |
0.523 |
2022 |
97.4 |
0.527 |
2023 |
97.2 |
0.532 |
2024 |
97.1 |
0.536 |
2025 |
96.9 |
0.540 |
2026 |
96.8 |
0.544 |
2027 |
96.6 |
0.548 |
2028 |
96.5 |
0.551 |
2029 |
96.4 |
0.555 |
2030 |
96.2 |
0.558 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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