04312+0157 HDS 585
04h 31m 11.44s +01° 57' 28.2" P.A. 122.00 sep 0.1 mag 12.83,14.04 Sp M2V: dist. 68.17 pc (222.37 l.y.)
| Coord 2000 |
04312+0157 |
|
Discov num |
HDS 585 |
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Comp |
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Coord arcsec 2000 |
04 31 11.44 +01 57 28.2 |
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| Date first |
1991 |
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Date last |
2021 |
|
Obs |
14 |
|
| Pa first |
263 |
|
Pa last |
122.1 |
|
P.A. Now (θ) |
122.1° |
|
| Sep first |
0.5 |
|
Sep last |
0.103 |
|
Sep. Now (ρ) |
0.103" |
|
| Mag pri |
12.83 |
|
Mag sec |
14.04 |
|
delta mag (ΔM) |
1.21 |
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Spectral class |
M2V: (red) |
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| Pri motion ra |
+170 |
|
Sec motion ra |
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| Pri motion dec |
+027 |
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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 |
Taurus |
|
HIP |
21092 |
|
Gaia DR2 |
3279109746977266688 |
|
Distance |
68.17 |
|
| Distance ly |
222.37 |
|
ORBITAL ELEMENTS
| Period (P) | 65.1y | ± 4.5 |
Periastron (T) | 2014.3y | ± 0.28 |
Semi-major axis (a) | 0.37a | ± 0.013 |
| Eccentricity (e) | 0.422 | ± 0.025 |
Inclination (i) | 76.1° | ± 0.7 |
Longitude of periastron (ω) | 170.2° | ± 2.5 |
| Node (Ω) | 259.9° | ± 0.7 |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
273.1 |
0.297 |
| 2001 |
275.1 |
0.268 |
| 2002 |
277.8 |
0.236 |
| 2003 |
281.2 |
0.203 |
| 2004 |
286.0 |
0.169 |
| 2005 |
293.2 |
0.135 |
| 2006 |
305.1 |
0.103 |
| 2007 |
326.2 |
0.077 |
| 2008 |
359.4 |
0.068 |
| 2009 |
30.5 |
0.082 |
| 2010 |
49.3 |
0.109 |
| 2011 |
60.2 |
0.139 |
| 2012 |
67.2 |
0.168 |
| 2013 |
72.3 |
0.192 |
| 2014 |
76.4 |
0.208 |
| 2015 |
80.1 |
0.215 |
| 2016 |
83.6 |
0.213 |
| 2017 |
87.5 |
0.202 |
| 2018 |
91.9 |
0.184 |
| 2019 |
97.4 |
0.162 |
| 2020 |
104.8 |
0.137 |
| 2021 |
115.6 |
0.112 |
| 2022 |
132.2 |
0.090 |
| 2023 |
155.9 |
0.079 |
| 2024 |
182.2 |
0.082 |
| 2025 |
202.7 |
0.099 |
| 2026 |
216.3 |
0.124 |
| 2027 |
225.0 |
0.152 |
| 2028 |
231.1 |
0.181 |
| 2029 |
235.4 |
0.210 |
| 2030 |
238.7 |
0.239 |
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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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