01251+4537 A 939 (HD 8528)
01h 25m 06.75s +45° 36' 31.0" P.A. 197.00 sep 0.2 mag 8.94,9.09 Sp F0 dist. 180.18 pc (587.75 l.y.)
Coord 2000 |
01251+4537 |
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Discov num |
A 939 |
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Comp |
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Coord arcsec 2000 |
01 25 06.75 +45 36 31.0 |
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Date first |
1905 |
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Date last |
2014 |
|
Obs |
40 |
|
Pa first |
264 |
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Pa last |
196.6 |
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P.A. Now (θ) |
215° |
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Sep first |
0.2 |
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Sep last |
0.198 |
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Sep. Now (ρ) |
0.206" |
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Mag pri |
8.94 |
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Mag sec |
9.09 |
|
delta mag (ΔM) |
0.15 |
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Spectral class |
F0 (yellow-white) |
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Pri motion ra |
-017 |
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Sec motion ra |
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Pri motion dec |
-021 |
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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.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 8528 |
|
Constellation |
Andromeda |
|
SAO |
37184 |
|
HIP |
6633 |
|
Tycho2 |
3265-00290-1 |
|
Gaia DR2 |
397299013346796800 |
|
HD |
8528 |
|
ADS |
1126 |
|
BD |
BD+44 296 |
|
Distance |
180.18 |
|
Distance ly |
587.75 |
|
ORBITAL ELEMENTS
Period (P) | 145.64y | |
Periastron (T) | 1962.5y | |
Semi-major axis (a) | 0.185a | |
Eccentricity (e) | 0.196 | |
Inclination (i) | 19.4° | |
Longitude of periastron (ω) | 273.6° | |
Node (Ω) | 143.5° | |
Notes | n | |
Reference | Msn2014b | |
Equinox | 2000 | |
Last observation | 2010 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
170.1 |
0.191 |
2001 |
172.2 |
0.192 |
2002 |
174.3 |
0.193 |
2003 |
176.4 |
0.194 |
2004 |
178.5 |
0.195 |
2005 |
180.5 |
0.196 |
2006 |
182.5 |
0.197 |
2007 |
184.5 |
0.198 |
2008 |
186.5 |
0.199 |
2009 |
188.5 |
0.199 |
2010 |
190.5 |
0.200 |
2011 |
192.4 |
0.201 |
2012 |
194.4 |
0.201 |
2013 |
196.3 |
0.202 |
2014 |
198.2 |
0.203 |
2015 |
200.1 |
0.203 |
2016 |
202.0 |
0.204 |
2017 |
203.9 |
0.204 |
2018 |
205.8 |
0.205 |
2019 |
207.6 |
0.205 |
2020 |
209.5 |
0.205 |
2021 |
211.3 |
0.206 |
2022 |
213.2 |
0.206 |
2023 |
215.0 |
0.206 |
2024 |
216.8 |
0.207 |
2025 |
218.7 |
0.207 |
2026 |
220.5 |
0.207 |
2027 |
222.3 |
0.208 |
2028 |
224.1 |
0.208 |
2029 |
225.9 |
0.208 |
2030 |
227.7 |
0.208 |
2031 |
229.5 |
0.208 |
2032 |
231.3 |
0.208 |
2033 |
233.1 |
0.209 |
2034 |
234.9 |
0.209 |
2035 |
236.7 |
0.209 |
2036 |
238.5 |
0.209 |
2037 |
240.3 |
0.209 |
2038 |
242.1 |
0.209 |
2039 |
243.9 |
0.209 |
2040 |
245.7 |
0.209 |
2041 |
247.5 |
0.209 |
2042 |
249.3 |
0.209 |
2043 |
251.1 |
0.208 |
2044 |
252.9 |
0.208 |
2045 |
254.7 |
0.208 |
2046 |
256.5 |
0.208 |
2047 |
258.3 |
0.208 |
2048 |
260.2 |
0.207 |
2049 |
262.0 |
0.207 |
2050 |
263.8 |
0.207 |
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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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