11446-4925 RST 9004 AB (V838 Cen)
11h 44m 38.59s -49° 25' 02.4" P.A. 281.00 sep 0.4 mag 9.35,10.64 Sp K0V+K5V dist. 48.57 pc (158.44 l.y.)
| Coord 2000 |
11446-4925 |
|
Discov num |
RST9004 |
|
Comp |
AB |
|
Coord arcsec 2000 |
11 44 38.59 -49 25 02.4 |
|
| Date first |
1929 |
|
Date last |
2021 |
|
Obs |
25 |
|
| Pa first |
349 |
|
Pa last |
281.4 |
|
P.A. Now (θ) |
290° |
|
| Sep first |
0.2 |
|
Sep last |
0.376 |
|
Sep. Now (ρ) |
0.4" |
|
| Mag pri |
9.35 |
|
Mag sec |
10.64 |
|
delta mag (ΔM) |
1.29 |
|
Spectral class |
K0V+K5V (yellow-orange/yellow-orange) |
|
| Pri motion ra |
-139 |
|
Sec motion ra |
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| Pri motion dec |
-049 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
11446-4925 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
V838 Cen |
222993 |
11 44 39 -49 25 02 |
RST 9004 AB |
2021 |
25 |
281 |
0.4 |
9.35 |
10.64 |
1.29 |
Y |
<=== |
| Show |
|
222993 |
11 44 39 -49 25 02 |
RST 9004 AB,C |
2015 |
6 |
35 |
15.7 |
9.11 |
13.50 |
4.39 |
|
|
| Show |
|
222993 |
11 44 39 -49 25 02 |
DAM 560 AB,D |
2015 |
3 |
143 |
8.5 |
9.11 |
14.00 |
4.89 |
|
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Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V838 Cen |
|
Constellation |
Centaurus |
|
SAO |
222993 |
|
HIP |
57269 |
|
| Tycho2 |
8223-00048-1 |
|
Gaia DR2 |
5371687288986430848 |
|
HD |
102077 |
|
CD |
CD-48 6770 |
|
| CP |
CP-48 4174 |
|
Distance |
48.57 |
|
Distance ly |
158.44 |
|
ORBITAL ELEMENTS
| Period (P) | 35.43y | ± 0.13 |
Periastron (T) | 2009.86y | ± 0.02 |
Semi-major axis (a) | 0.3074a | ± 0.0014 |
| Eccentricity (e) | 0.409 | ± 0.003 |
Inclination (i) | 27.5° | ± 0.8 |
Longitude of periastron (ω) | 350.1° | ± 1.9 |
| Node (Ω) | 139° | ± 1.8 |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
346.9 |
0.360 |
| 2001 |
353.2 |
0.340 |
| 2002 |
0.4 |
0.317 |
| 2003 |
8.8 |
0.292 |
| 2004 |
18.8 |
0.266 |
| 2005 |
31.0 |
0.240 |
| 2006 |
46.0 |
0.216 |
| 2007 |
64.4 |
0.197 |
| 2008 |
86.0 |
0.184 |
| 2009 |
109.6 |
0.180 |
| 2010 |
133.5 |
0.182 |
| 2011 |
156.5 |
0.186 |
| 2012 |
178.0 |
0.195 |
| 2013 |
197.4 |
0.207 |
| 2014 |
214.3 |
0.223 |
| 2015 |
228.6 |
0.244 |
| 2016 |
240.6 |
0.266 |
| 2017 |
250.7 |
0.288 |
| 2018 |
259.4 |
0.311 |
| 2019 |
266.9 |
0.332 |
| 2020 |
273.6 |
0.352 |
| 2021 |
279.5 |
0.370 |
| 2022 |
285.0 |
0.386 |
| 2023 |
290.0 |
0.400 |
| 2024 |
294.7 |
0.411 |
| 2025 |
299.2 |
0.420 |
| 2026 |
303.6 |
0.427 |
| 2027 |
307.8 |
0.431 |
| 2028 |
312.0 |
0.432 |
| 2029 |
316.1 |
0.431 |
| 2030 |
320.4 |
0.427 |
|
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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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