03221+4440 COU 1681
03h 22m 05.17s +44° 39' 42.0" P.A. 251.00 sep 0.1 mag 10.04,10.78 Sp G5 dist. 157.23 pc (512.88 l.y.)
Coord 2000 |
03221+4440 |
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Discov num |
COU1681 |
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Comp |
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Coord arcsec 2000 |
03 22 05.17 +44 39 42.0 |
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Date first |
1978 |
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Date last |
2011 |
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Obs |
21 |
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Pa first |
58 |
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Pa last |
250.5 |
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P.A. Now (θ) |
161.1° |
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Sep first |
0.3 |
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Sep last |
0.103 |
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Sep. Now (ρ) |
0.198" |
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Mag pri |
10.04 |
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Mag sec |
10.78 |
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delta mag (ΔM) |
0.74 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+076 |
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Sec motion ra |
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Pri motion dec |
-044 |
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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
Constellation |
Perseus |
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HIP |
15688 |
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Tycho2 |
2873-02677-1 |
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Gaia DR2 |
242222106663050240 |
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BD |
BD+44 679 |
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Distance |
157.23 |
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Distance ly |
512.88 |
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ORBITAL ELEMENTS
Period (P) | 68.3y | ± 2.4 |
Periastron (T) | 2011.9y | ± 0.3 |
Semi-major axis (a) | 0.23a | ± 0.005 |
Eccentricity (e) | 0.395 | ± 0.005 |
Inclination (i) | 135.3° | ± 0.6 |
Longitude of periastron (ω) | 109.5° | ± 4.9 |
Node (Ω) | 6.8° | ± 1.6 |
Notes | | |
Reference | BAE2021 | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
6.3 |
0.223 |
2001 |
2.5 |
0.213 |
2002 |
358.3 |
0.203 |
2003 |
353.6 |
0.191 |
2004 |
348.3 |
0.178 |
2005 |
342.0 |
0.164 |
2006 |
334.6 |
0.150 |
2007 |
325.6 |
0.135 |
2008 |
314.4 |
0.121 |
2009 |
300.6 |
0.109 |
2010 |
284.1 |
0.102 |
2011 |
266.1 |
0.100 |
2012 |
248.7 |
0.105 |
2013 |
233.3 |
0.114 |
2014 |
220.6 |
0.126 |
2015 |
210.2 |
0.138 |
2016 |
201.4 |
0.150 |
2017 |
193.9 |
0.161 |
2018 |
187.3 |
0.171 |
2019 |
181.4 |
0.179 |
2020 |
175.9 |
0.185 |
2021 |
170.7 |
0.191 |
2022 |
165.8 |
0.195 |
2023 |
161.1 |
0.198 |
2024 |
156.5 |
0.201 |
2025 |
152.1 |
0.203 |
2026 |
147.7 |
0.204 |
2027 |
143.3 |
0.205 |
2028 |
139.0 |
0.206 |
2029 |
134.8 |
0.207 |
2030 |
130.6 |
0.208 |
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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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