10121-0241 DEL 3
10h 12m 04.68s -02° 41' 05.1" P.A. 270.00 sep 0.1 mag 9.90,10.90 Sp M2.5V dist. 12.33 pc (40.22 l.y.)
| Coord 2000 |
10121-0241 |
|
Discov num |
DEL 3 |
|
Comp |
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Coord arcsec 2000 |
10 12 04.68 -02 41 05.1 |
|
| Date first |
1999 |
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Date last |
2020 |
|
Obs |
32 |
|
| Pa first |
256 |
|
Pa last |
270.1 |
|
P.A. Now (θ) |
252.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.072 |
|
Sep. Now (ρ) |
0.206" |
|
| Mag pri |
9.90 |
|
Mag sec |
10.90 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
M2.5V (red) |
|
| Pri motion ra |
+527 |
|
Sec motion ra |
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| Pri motion dec |
-601 |
|
Sec motion dec |
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| Notes |
O
R
(Orbital solution, Red magnitudes) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sextans |
|
HIP |
49969 |
|
Tycho2 |
4907-00091-1 |
|
GL |
Gl 381 |
|
| Distance |
12.33 |
|
Distance ly |
40.22 |
|
ORBITAL ELEMENTS
| Period (P) | 7.5731y | ± 0.0055 |
Periastron (T) | 57700.6d (2016.855y) | ± 3.9 |
Semi-major axis (a) | 293m | ± 3.4 |
| Eccentricity (e) | 0.7503 | ± 0.0061 |
Inclination (i) | 93.026° | ± 0.073 |
Longitude of periastron (ω) | 273.99° | ± 0.11 |
| Node (Ω) | 68.523° | ± 0.047 |
Notes | | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
253.9 |
0.195 |
| 2001 |
250.5 |
0.197 |
| 2002 |
68.2 |
0.132 |
| 2003 |
63.2 |
0.169 |
| 2004 |
55.2 |
0.102 |
| 2005 |
359.0 |
0.029 |
| 2006 |
266.6 |
0.085 |
| 2007 |
256.5 |
0.162 |
| 2008 |
252.5 |
0.209 |
| 2009 |
248.4 |
0.130 |
| 2010 |
65.8 |
0.177 |
| 2011 |
60.7 |
0.145 |
| 2012 |
46.4 |
0.067 |
| 2013 |
291.1 |
0.040 |
| 2014 |
260.6 |
0.120 |
| 2015 |
254.5 |
0.188 |
| 2016 |
251.1 |
0.205 |
| 2017 |
69.9 |
0.085 |
| 2018 |
63.9 |
0.175 |
| 2019 |
57.0 |
0.114 |
| 2020 |
20.1 |
0.035 |
| 2021 |
269.9 |
0.073 |
| 2022 |
257.3 |
0.152 |
| 2023 |
252.9 |
0.206 |
| 2024 |
249.3 |
0.164 |
| 2025 |
66.5 |
0.170 |
| 2026 |
61.6 |
0.154 |
| 2027 |
50.3 |
0.079 |
| 2028 |
308.0 |
0.031 |
| 2029 |
262.2 |
0.108 |
| 2030 |
255.1 |
0.180 |
|
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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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