23019+4220 WRH 37 AB (Omi And)
23h 01m 55.26s +42° 19' 33.5" P.A. 177.00 sep 0.2 mag 3.73,6.03 Sp B6IIIpe+. dist. 210.53 pc (686.75 l.y.)
| Coord 2000 |
23019+4220 |
|
Discov num |
WRH 37 |
|
Comp |
AB |
|
Coord arcsec 2000 |
23 01 55.26 +42 19 33.5 |
|
| Date first |
1975 |
|
Date last |
2020 |
|
Obs |
115 |
|
| Pa first |
3 |
|
Pa last |
176.7 |
|
P.A. Now (θ) |
172.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.207 |
|
Sep. Now (ρ) |
0.199" |
|
| Mag pri |
3.73 |
|
Mag sec |
6.03 |
|
delta mag (ΔM) |
2.3 |
|
Spectral class |
B6IIIpe+. (blue-white) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
|
|
| Pri motion dec |
+000 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
23019+4220 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
52609 |
23 01 55 +42 19 34 |
BLA 12 Aa,Ab |
1997 |
5 |
127 |
0.1 |
3.80 |
5.70 |
1.90 |
Y |
|
| Show |
Omi And |
52609 |
23 01 55 +42 19 34 |
WRH 37 AB |
2020 |
115 |
177 |
0.2 |
3.73 |
6.03 |
2.30 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Omi And |
|
Constellation |
Andromeda |
|
SAO |
52609 |
|
HIP |
113726 |
|
| Tycho2 |
3224-03434-1 |
|
Gaia DR2 |
1931192500886411136 |
|
HD |
217675 |
|
HR |
8762 |
|
| GC |
32095 |
|
BD |
BD+41 4664 |
|
Bayer |
Omicron Andromedae |
|
Bayer name |
Omi And |
|
| Flamsteed |
1 Andromedae |
|
Flamsteed name |
1 And |
|
FK5 |
869 |
|
Distance |
210.53 |
|
| Distance ly |
686.75 |
|
Bayer greek |
ο And |
|
ORBITAL ELEMENTS
| Period (P) | 118y | ± 0.3 |
Periastron (T) | 2010.88y | ± 0.07 |
Semi-major axis (a) | 303.8m | ± 0.8 |
| Eccentricity (e) | 0.34 | ± 0.001 |
Inclination (i) | 107.4° | ± 0.2 |
Longitude of periastron (ω) | 146° | ± 0.4 |
| Node (Ω) | 4.8° | ± 0.1 |
Notes | n | |
Reference | Mit2021 | |
| Equinox | | |
Last observation | 2020 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
300.7 |
0.077 |
| 2001 |
285.8 |
0.070 |
| 2002 |
268.7 |
0.067 |
| 2003 |
251.8 |
0.071 |
| 2004 |
237.5 |
0.079 |
| 2005 |
226.3 |
0.090 |
| 2006 |
217.9 |
0.104 |
| 2007 |
211.4 |
0.118 |
| 2008 |
206.3 |
0.132 |
| 2009 |
202.2 |
0.146 |
| 2010 |
198.8 |
0.159 |
| 2011 |
195.9 |
0.171 |
| 2012 |
193.3 |
0.182 |
| 2013 |
191.0 |
0.191 |
| 2014 |
189.0 |
0.198 |
| 2015 |
187.0 |
0.205 |
| 2016 |
185.2 |
0.209 |
| 2017 |
183.4 |
0.212 |
| 2018 |
181.6 |
0.213 |
| 2019 |
179.9 |
0.213 |
| 2020 |
178.1 |
0.211 |
| 2021 |
176.3 |
0.208 |
| 2022 |
174.4 |
0.204 |
| 2023 |
172.5 |
0.199 |
| 2024 |
170.4 |
0.193 |
| 2025 |
168.3 |
0.187 |
| 2026 |
165.9 |
0.179 |
| 2027 |
163.3 |
0.171 |
| 2028 |
160.5 |
0.163 |
| 2029 |
157.3 |
0.155 |
| 2030 |
153.8 |
0.146 |
|
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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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