21099-2424 HDS 3015 (HD 201385)
21h 09m 51.57s -24° 24' 02.7" P.A. 305.00 sep 0.0 mag 8.71,9.34 Sp G5V dist. 52.25 pc (170.44 l.y.)
Coord 2000 |
21099-2424 |
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Discov num |
HDS3015 |
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Comp |
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Coord arcsec 2000 |
21 09 51.57 -24 24 02.7 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
17 |
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Pa first |
122 |
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Pa last |
305.2 |
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P.A. Now (θ) |
97.1° |
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Sep first |
0.1 |
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Sep last |
0.036 |
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Sep. Now (ρ) |
0.072" |
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Mag pri |
8.71 |
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Mag sec |
9.34 |
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delta mag (ΔM) |
0.63 |
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Spectral class |
G5V (yellow) |
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Pri motion ra |
-003 |
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Sec motion ra |
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Pri motion dec |
+019 |
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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 201385 |
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Constellation |
Capricornus |
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SAO |
190074 |
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HIP |
104476 |
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Tycho2 |
6928-00128-1 |
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Gaia DR2 |
6804022495232526976 |
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HD |
201385 |
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CD |
CD-2416499 |
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CP |
CP-24 7169 |
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Distance |
52.25 |
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Distance ly |
170.44 |
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ORBITAL ELEMENTS
Period (P) | 6.88y | ± 0.12 |
Periastron (T) | 2014.99y | ± 0.18 |
Semi-major axis (a) | 0.0882a | ± 0.004 |
Eccentricity (e) | 0.566 | ± 0.032 |
Inclination (i) | 66° | ± 2 |
Longitude of periastron (ω) | 13.7° | ± 12.2 |
Node (Ω) | 296.3° | ± 4.5 |
Notes | | |
Reference | Tok2017b | |
Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
156.1 |
0.054 |
2001 |
280.7 |
0.037 |
2002 |
82.0 |
0.045 |
2003 |
108.0 |
0.108 |
2004 |
117.0 |
0.134 |
2005 |
124.5 |
0.131 |
2006 |
134.5 |
0.100 |
2007 |
162.7 |
0.046 |
2008 |
291.8 |
0.039 |
2009 |
88.8 |
0.054 |
2010 |
109.3 |
0.113 |
2011 |
117.9 |
0.135 |
2012 |
125.5 |
0.128 |
2013 |
136.2 |
0.095 |
2014 |
171.6 |
0.040 |
2015 |
302.9 |
0.037 |
2016 |
93.5 |
0.063 |
2017 |
110.6 |
0.117 |
2018 |
118.8 |
0.136 |
2019 |
126.5 |
0.126 |
2020 |
138.2 |
0.089 |
2021 |
184.1 |
0.033 |
2022 |
316.8 |
0.032 |
2023 |
97.1 |
0.072 |
2024 |
111.7 |
0.121 |
2025 |
119.7 |
0.136 |
2026 |
127.6 |
0.123 |
2027 |
140.4 |
0.083 |
2028 |
201.2 |
0.029 |
2029 |
337.9 |
0.025 |
2030 |
99.9 |
0.080 |
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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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