21206+1310 HDS 3038 (HD 203220)
21h 20m 33.52s +13° 10' 01.3" P.A. 126.00 sep 0.1 mag 8.28,11.01 Sp G0 dist. 91.58 pc (298.73 l.y.)
Coord 2000 |
21206+1310 |
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Discov num |
HDS3038 |
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Comp |
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Coord arcsec 2000 |
21 20 33.52 +13 10 01.3 |
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Date first |
1991 |
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Date last |
2018 |
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Obs |
9 |
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Pa first |
324 |
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Pa last |
125.6 |
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P.A. Now (θ) |
125.6° |
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Sep first |
0.2 |
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Sep last |
0.142 |
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Sep. Now (ρ) |
0.142" |
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Mag pri |
8.28 |
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Mag sec |
11.01 |
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delta mag (ΔM) |
2.73 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
+051 |
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Sec motion ra |
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Pri motion dec |
-038 |
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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 203220 |
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Constellation |
Pegasus |
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SAO |
107048 |
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HIP |
105371 |
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Tycho2 |
1118-01137-1 |
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Gaia DR2 |
1747168609836225792 |
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HD |
203220 |
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BD |
BD+12 4602 |
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Distance |
91.58 |
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Distance ly |
298.73 |
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ORBITAL ELEMENTS
Period (P) | 78.2y | |
Periastron (T) | 2012.84y | |
Semi-major axis (a) | 0.231a | |
Eccentricity (e) | 0.25 | |
Inclination (i) | 91.1° | |
Longitude of periastron (ω) | 274.3° | |
Node (Ω) | 126.1° | |
Notes | | |
Reference | Tok2019c | |
Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
306.0 |
0.212 |
2001 |
305.9 |
0.204 |
2002 |
305.7 |
0.194 |
2003 |
305.6 |
0.183 |
2004 |
305.5 |
0.169 |
2005 |
305.3 |
0.154 |
2006 |
305.1 |
0.137 |
2007 |
304.8 |
0.119 |
2008 |
304.4 |
0.098 |
2009 |
303.8 |
0.077 |
2010 |
302.7 |
0.054 |
2011 |
300.0 |
0.031 |
2012 |
281.0 |
0.008 |
2013 |
137.2 |
0.017 |
2014 |
130.7 |
0.041 |
2015 |
128.9 |
0.064 |
2016 |
128.1 |
0.086 |
2017 |
127.6 |
0.107 |
2018 |
127.2 |
0.126 |
2019 |
127.0 |
0.144 |
2020 |
126.8 |
0.160 |
2021 |
126.6 |
0.174 |
2022 |
126.5 |
0.186 |
2023 |
126.4 |
0.196 |
2024 |
126.2 |
0.204 |
2025 |
126.1 |
0.211 |
2026 |
126.0 |
0.215 |
2027 |
125.9 |
0.218 |
2028 |
125.8 |
0.219 |
2029 |
125.8 |
0.219 |
2030 |
125.7 |
0.217 |
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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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