22075+2538 A 308 (HD 210103)
22h 07m 29.16s +25° 38' 11.4" P.A. 312.00 sep 0.2 mag 8.83,9.38 Sp A2 dist. 246.31 pc (803.46 l.y.)
Coord 2000 |
22075+2538 |
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Discov num |
A 308 |
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Comp |
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Coord arcsec 2000 |
22 07 29.16 +25 38 11.4 |
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Date first |
1901 |
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Date last |
2014 |
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Obs |
40 |
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Pa first |
118 |
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Pa last |
311.9 |
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P.A. Now (θ) |
325.2° |
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Sep first |
0.2 |
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Sep last |
0.187 |
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Sep. Now (ρ) |
0.144" |
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Mag pri |
8.83 |
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Mag sec |
9.38 |
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delta mag (ΔM) |
0.55 |
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Spectral class |
A2 (white) |
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Pri motion ra |
+020 |
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Sec motion ra |
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Pri motion dec |
-002 |
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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 210103 |
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Constellation |
Pegasus |
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SAO |
90246 |
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HIP |
109211 |
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Tycho2 |
2208-01871-1 |
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Gaia DR2 |
1891643857908112256 |
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HD |
210103 |
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ADS |
15650 |
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BD |
BD+24 4536 |
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Distance |
246.31 |
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Distance ly |
803.46 |
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ORBITAL ELEMENTS
Period (P) | 174.38y | ± 8.71 |
Periastron (T) | 2015.31y | ± 20.58 |
Semi-major axis (a) | 0.2a | ± 0.004 |
Eccentricity (e) | 0.059 | ± 0.024 |
Inclination (i) | 68.4° | ± 2 |
Longitude of periastron (ω) | 26.1° | ± 47.7 |
Node (Ω) | 305.7° | ± 1.5 |
Notes | n | |
Reference | Hrt2009 | |
Equinox | | |
Last observation | 2006 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
302.3 |
0.188 |
2001 |
303.1 |
0.189 |
2002 |
304.0 |
0.189 |
2003 |
304.8 |
0.189 |
2004 |
305.7 |
0.189 |
2005 |
306.5 |
0.189 |
2006 |
307.4 |
0.188 |
2007 |
308.2 |
0.188 |
2008 |
309.1 |
0.187 |
2009 |
310.0 |
0.185 |
2010 |
310.8 |
0.184 |
2011 |
311.8 |
0.182 |
2012 |
312.7 |
0.180 |
2013 |
313.6 |
0.178 |
2014 |
314.6 |
0.175 |
2015 |
315.6 |
0.173 |
2016 |
316.6 |
0.170 |
2017 |
317.7 |
0.167 |
2018 |
318.8 |
0.163 |
2019 |
320.0 |
0.160 |
2020 |
321.2 |
0.156 |
2021 |
322.5 |
0.152 |
2022 |
323.8 |
0.148 |
2023 |
325.2 |
0.144 |
2024 |
326.8 |
0.140 |
2025 |
328.4 |
0.135 |
2026 |
330.1 |
0.131 |
2027 |
331.9 |
0.126 |
2028 |
333.9 |
0.122 |
2029 |
336.0 |
0.117 |
2030 |
338.3 |
0.113 |
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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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