09279+3128 HO 366 AB
09h 27m 54.30s +31° 27' 54.1" P.A. 213.00 sep 0.2 mag 9.40,9.80 Sp G0
Coord 2000 |
09279+3128 |
|
Discov num |
HO 366 |
|
Comp |
AB |
|
Coord arcsec 2000 |
09 27 54.30 +31 27 54.1 |
|
Date first |
1891 |
|
Date last |
2012 |
|
Obs |
34 |
|
Pa first |
10 |
|
Pa last |
212.9 |
|
P.A. Now (θ) |
212.9° |
|
Sep first |
0.5 |
|
Sep last |
0.224 |
|
Sep. Now (ρ) |
0.224" |
|
Mag pri |
9.40 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
G0 (yellow) |
|
Pri motion ra |
-012 |
|
Sec motion ra |
|
|
Pri motion dec |
-068 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
09279+3128 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
61504 |
09 27 54 +31 27 54 |
HO 366 AB |
2012 |
34 |
213 |
0.2 |
9.40 |
9.80 |
0.40 |
Y |
<=== |
Show |
HD 81656 |
61504 |
09 27 54 +31 27 54 |
HO 366 AB,C |
2015 |
9 |
59 |
53.3 |
8.87 |
12.34 |
3.47 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Leo |
|
SAO |
61504 |
|
Tycho2 |
2494-00727-1 |
|
Gaia DR2 |
700874070695989888 |
|
HD |
81656 |
|
ADS |
7384 |
|
ORBITAL ELEMENTS
Period (P) | 353.11y | |
Periastron (T) | 2001.3y | |
Semi-major axis (a) | 0.404a | |
Eccentricity (e) | 0.764 | |
Inclination (i) | 19.4° | |
Longitude of periastron (ω) | 166.1° | |
Node (Ω) | 9.8° | |
Notes | | |
Reference | Zir2010 | |
Equinox | 2000 | |
Last observation | 1997 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
162.1 |
0.096 |
2001 |
173.3 |
0.095 |
2002 |
184.5 |
0.096 |
2003 |
195.3 |
0.098 |
2004 |
205.6 |
0.101 |
2005 |
215.1 |
0.105 |
2006 |
223.9 |
0.110 |
2007 |
231.8 |
0.116 |
2008 |
238.9 |
0.122 |
2009 |
245.3 |
0.129 |
2010 |
251.0 |
0.136 |
2011 |
256.2 |
0.144 |
2012 |
260.9 |
0.151 |
2013 |
265.1 |
0.159 |
2014 |
268.9 |
0.167 |
2015 |
272.3 |
0.175 |
2016 |
275.5 |
0.183 |
2017 |
278.4 |
0.190 |
2018 |
281.1 |
0.198 |
2019 |
283.6 |
0.206 |
2020 |
285.9 |
0.214 |
2021 |
288.0 |
0.221 |
2022 |
290.0 |
0.229 |
2023 |
291.9 |
0.236 |
2024 |
293.7 |
0.244 |
2025 |
295.3 |
0.251 |
2026 |
296.9 |
0.258 |
2027 |
298.4 |
0.265 |
2028 |
299.8 |
0.272 |
2029 |
301.1 |
0.279 |
2030 |
302.4 |
0.286 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|