04218+1929 SIG 1
04h 21m 49.56s +19° 29' 08.6" P.A. 75.00 sep 0.2 mag 13.10,13.90 Sp M7+M9.5
| Coord 2000 |
04218+1929 |
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Discov num |
SIG 1 |
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Comp |
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Coord arcsec 2000 |
04 21 49.56 +19 29 08.6 |
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| Date first |
2002 |
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Date last |
2012 |
|
Obs |
20 |
|
| Pa first |
91 |
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Pa last |
75.3 |
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P.A. Now (θ) |
57.3° |
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| Sep first |
0.1 |
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Sep last |
0.159 |
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Sep. Now (ρ) |
0.093" |
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| Mag pri |
13.10 |
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Mag sec |
13.90 |
|
delta mag (ΔM) |
0.8 |
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Spectral class |
M7+M9.5 (red/red) |
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| Pri motion ra |
+116 |
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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 |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Taurus |
|
Gaia DR2 |
48190739948429184 |
|
ORBITAL ELEMENTS
| Period (P) | 14.82y | ± 0.24 |
Periastron (T) | 58880m (2020.085y) | ± 140 |
Semi-major axis (a) | 0.0965a | ± 0.0014 |
| Eccentricity (e) | 0.706 | ± 0.012 |
Inclination (i) | 62.4° | ± 1.6 |
Longitude of periastron (ω) | 168° | ± 4 |
| Node (Ω) | 82.1° | ± 1.1 |
Notes | n | |
Reference | Dup2017 | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
82.7 |
0.155 |
| 2001 |
86.0 |
0.142 |
| 2002 |
90.3 |
0.122 |
| 2003 |
96.8 |
0.093 |
| 2004 |
111.8 |
0.052 |
| 2005 |
223.7 |
0.021 |
| 2006 |
334.8 |
0.024 |
| 2007 |
40.0 |
0.054 |
| 2008 |
55.6 |
0.087 |
| 2009 |
63.0 |
0.114 |
| 2010 |
67.8 |
0.135 |
| 2011 |
71.4 |
0.150 |
| 2012 |
74.5 |
0.159 |
| 2013 |
77.4 |
0.162 |
| 2014 |
80.2 |
0.161 |
| 2015 |
83.2 |
0.153 |
| 2016 |
86.7 |
0.139 |
| 2017 |
91.2 |
0.117 |
| 2018 |
98.4 |
0.086 |
| 2019 |
117.8 |
0.043 |
| 2020 |
247.9 |
0.026 |
| 2021 |
355.5 |
0.027 |
| 2022 |
44.1 |
0.060 |
| 2023 |
57.3 |
0.093 |
| 2024 |
64.0 |
0.118 |
| 2025 |
68.5 |
0.138 |
| 2026 |
72.0 |
0.152 |
| 2027 |
75.1 |
0.160 |
| 2028 |
77.9 |
0.163 |
| 2029 |
80.7 |
0.160 |
| 2030 |
83.8 |
0.151 |
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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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