22281+1215 BU 701 AB (HD 212989)
22h 28m 07.24s +12° 14' 55.5" P.A. 179.00 sep 1.1 mag 7.34,9.62 Sp K0V dist. 66.4 pc (216.6 l.y.)
| Coord 2000 |
22281+1215 |
|
Discov num |
BU 701 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 28 07.24 +12 14 55.5 |
|
| Date first |
1877 |
|
Date last |
2017 |
|
Obs |
65 |
|
| Pa first |
283 |
|
Pa last |
178.9 |
|
P.A. Now (θ) |
178.9° |
|
| Sep first |
1.2 |
|
Sep last |
1.073 |
|
Sep. Now (ρ) |
1.073" |
|
| Mag pri |
7.34 |
|
Mag sec |
9.62 |
|
delta mag (ΔM) |
2.28 |
|
Spectral class |
K0V (yellow-orange) |
|
| Pri motion ra |
+191 |
|
Sec motion ra |
+191 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-004 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
22281+1215 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 212989 |
107935 |
22 28 07 +12 14 56 |
BU 701 AB |
2017 |
65 |
179 |
1.1 |
7.34 |
9.62 |
2.28 |
Y |
<=== |
| Show |
|
107935 |
22 28 07 +12 14 56 |
BU 701 AC |
2015 |
10 |
133 |
126.7 |
7.34 |
11.97 |
4.63 |
|
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 212989 |
|
Constellation |
Pegasus |
|
SAO |
107935 |
|
HIP |
110900 |
|
| Tycho2 |
1154-01842-1 |
|
Gaia DR2 |
2730563121000851584 |
|
HD |
212989 |
|
GC |
31383 |
|
| ADS |
15962 |
|
GL |
GJ 1269A |
|
BD |
BD+11 4804 |
|
Distance |
66.4 |
|
| Distance ly |
216.6 |
|
ORBITAL ELEMENTS
| Period (P) | 554.46y | |
Periastron (T) | 2288.31y | |
Semi-major axis (a) | 1.4a | |
| Eccentricity (e) | 0.139 | |
Inclination (i) | 124.1° | |
Longitude of periastron (ω) | 105.4° | |
| Node (Ω) | 118.1° | |
Notes | | |
Reference | Cve2005 | |
| Equinox | 2000 | |
Last observation | 1999 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
190.8 |
0.922 |
| 2001 |
190.0 |
0.925 |
| 2002 |
189.1 |
0.928 |
| 2003 |
188.3 |
0.931 |
| 2004 |
187.5 |
0.934 |
| 2005 |
186.7 |
0.938 |
| 2006 |
185.9 |
0.941 |
| 2007 |
185.1 |
0.945 |
| 2008 |
184.3 |
0.948 |
| 2009 |
183.5 |
0.952 |
| 2010 |
182.8 |
0.956 |
| 2011 |
182.0 |
0.960 |
| 2012 |
181.2 |
0.964 |
| 2013 |
180.5 |
0.968 |
| 2014 |
179.7 |
0.972 |
| 2015 |
179.0 |
0.977 |
| 2016 |
178.2 |
0.981 |
| 2017 |
177.5 |
0.986 |
| 2018 |
176.8 |
0.990 |
| 2019 |
176.1 |
0.995 |
| 2020 |
175.4 |
0.999 |
| 2021 |
174.7 |
1.004 |
| 2022 |
174.0 |
1.009 |
| 2023 |
173.3 |
1.014 |
| 2024 |
172.6 |
1.019 |
| 2025 |
171.9 |
1.024 |
| 2026 |
171.2 |
1.029 |
| 2027 |
170.6 |
1.034 |
| 2028 |
169.9 |
1.039 |
| 2029 |
169.3 |
1.044 |
| 2030 |
168.6 |
1.049 |
|
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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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