22052+2952 A 893 (HD 209745)
22h 05m 09.05s +29° 52' 03.2" P.A. 229.00 sep 0.2 mag 9.10,10.37 Sp F8V dist. 128.7 pc (419.82 l.y.)
Coord 2000 |
22052+2952 |
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Discov num |
A 893 |
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Comp |
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Coord arcsec 2000 |
22 05 09.05 +29 52 03.2 |
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Date first |
1904 |
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Date last |
2013 |
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Obs |
29 |
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Pa first |
243 |
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Pa last |
228.8 |
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P.A. Now (θ) |
215.1° |
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Sep first |
0.2 |
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Sep last |
0.199 |
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Sep. Now (ρ) |
0.281" |
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Mag pri |
9.10 |
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Mag sec |
10.37 |
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delta mag (ΔM) |
1.27 |
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Spectral class |
F8V (yellow-white) |
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Pri motion ra |
+041 |
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Sec motion ra |
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Pri motion dec |
-015 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 209745 |
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Constellation |
Pegasus |
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SAO |
90215 |
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HIP |
109018 |
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Tycho2 |
2216-00061-1 |
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Gaia DR2 |
1896749543230641408 |
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HD |
209745 |
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ADS |
15610 |
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BD |
BD+29 4578 |
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Distance |
128.7 |
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Distance ly |
419.82 |
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ORBITAL ELEMENTS
Period (P) | 105.9y | |
Periastron (T) | 1990.8y | |
Semi-major axis (a) | 0.225a | |
Eccentricity (e) | 0.438 | |
Inclination (i) | 147.7° | |
Longitude of periastron (ω) | 190.1° | |
Node (Ω) | 195.3° | |
Notes | | |
Reference | FMR2014a | |
Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
291.9 |
0.138 |
2001 |
285.3 |
0.143 |
2002 |
279.1 |
0.148 |
2003 |
273.4 |
0.155 |
2004 |
268.1 |
0.161 |
2005 |
263.3 |
0.168 |
2006 |
258.9 |
0.175 |
2007 |
254.8 |
0.182 |
2008 |
251.0 |
0.189 |
2009 |
247.5 |
0.197 |
2010 |
244.2 |
0.204 |
2011 |
241.2 |
0.211 |
2012 |
238.3 |
0.218 |
2013 |
235.6 |
0.224 |
2014 |
233.1 |
0.231 |
2015 |
230.7 |
0.237 |
2016 |
228.5 |
0.244 |
2017 |
226.3 |
0.249 |
2018 |
224.2 |
0.255 |
2019 |
222.3 |
0.261 |
2020 |
220.4 |
0.266 |
2021 |
218.6 |
0.271 |
2022 |
216.8 |
0.276 |
2023 |
215.1 |
0.281 |
2024 |
213.5 |
0.285 |
2025 |
211.9 |
0.289 |
2026 |
210.4 |
0.293 |
2027 |
208.9 |
0.297 |
2028 |
207.4 |
0.300 |
2029 |
206.0 |
0.303 |
2030 |
204.6 |
0.306 |
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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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