21552-6153 HDO 296 AB
21h 55m 11.34s -61° 53' 11.0" P.A. 271.00 sep 0.1 mag 6.60,6.80 Sp F1III dist. 46.47 pc (151.59 l.y.)
| Coord 2000 |
21552-6153 |
|
Discov num |
HDO 296 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 55 11.34 -61 53 11.0 |
|
| Date first |
1897 |
|
Date last |
2021 |
|
Obs |
57 |
|
| Pa first |
105 |
|
Pa last |
271 |
|
P.A. Now (θ) |
277.7° |
|
| Sep first |
0.5 |
|
Sep last |
0.134 |
|
Sep. Now (ρ) |
0.172" |
|
| Mag pri |
6.60 |
|
Mag sec |
6.80 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
F1III (yellow-white) |
|
| Pri motion ra |
+046 |
|
Sec motion ra |
|
|
| Pri motion dec |
-093 |
|
Sec motion dec |
|
|
| Notes |
N
O
W
(See Notes, Orbital solution, ) |
|
This double is physical.
21552-6153 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
255101 |
21 55 11 -61 53 11 |
HDO 296 AB |
2021 |
57 |
271 |
0.1 |
6.60 |
6.80 |
0.20 |
Y |
<=== |
| Show |
|
255101 |
21 55 11 -61 53 11 |
CVN 31 AC |
2007 |
3 |
158 |
5.0 |
5.96 |
|
|
|
|
| Show |
HD 207964 |
255101 |
21 55 11 -61 53 11 |
SHY 348 AD |
2010 |
6 |
245 |
999.9 |
5.96 |
7.28 |
1.32 |
|
|
| Show |
|
255101 |
21 55 11 -61 53 11 |
SHY 348 AE |
2000 |
3 |
306 |
999.9 |
5.96 |
11.69 |
5.73 |
|
|
| Show |
|
255101 |
21 55 11 -61 53 11 |
CVN 31 AF |
2007 |
2 |
191 |
12.9 |
4.91 |
15.30 |
10.39 |
|
|
| Show |
|
255093 |
21 52 10 -62 03 08 |
SHY 347 DE |
2015 |
4 |
320 |
999.9 |
7.28 |
11.69 |
4.41 |
|
|
| Show |
|
255093 |
21 52 10 -62 03 08 |
CVN 31 DF |
2005 |
1 |
33 |
11.1 |
6.03 |
20.50 |
14.47 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Indus |
|
SAO |
255101 |
|
HIP |
108195 |
|
Tycho2 |
9116-02070-1 |
|
| Gaia DR2 |
6408955426068786688 |
|
HD |
207964 |
|
HR |
8352 |
|
GC |
30654 |
|
| CP |
CP-62 6277 |
|
Distance |
46.47 |
|
Distance ly |
151.59 |
|
ORBITAL ELEMENTS
| Period (P) | 27.94y | ± 0.32 |
Periastron (T) | 1997.59y | ± 0.41 |
Semi-major axis (a) | 0.276a | ± 0.009 |
| Eccentricity (e) | 0.42 | ± 0.031 |
Inclination (i) | 83.2° | ± 0.5 |
Longitude of periastron (ω) | 41.4° | ± 5 |
| Node (Ω) | 282° | ± 0.4 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
86.2 |
0.081 |
| 2001 |
94.6 |
0.155 |
| 2002 |
97.7 |
0.217 |
| 2003 |
99.5 |
0.266 |
| 2004 |
100.8 |
0.303 |
| 2005 |
101.8 |
0.328 |
| 2006 |
102.8 |
0.344 |
| 2007 |
103.6 |
0.352 |
| 2008 |
104.5 |
0.351 |
| 2009 |
105.4 |
0.343 |
| 2010 |
106.3 |
0.329 |
| 2011 |
107.3 |
0.309 |
| 2012 |
108.5 |
0.284 |
| 2013 |
110.0 |
0.254 |
| 2014 |
111.9 |
0.219 |
| 2015 |
114.5 |
0.180 |
| 2016 |
118.7 |
0.139 |
| 2017 |
126.6 |
0.096 |
| 2018 |
147.0 |
0.055 |
| 2019 |
207.7 |
0.038 |
| 2020 |
252.7 |
0.068 |
| 2021 |
267.0 |
0.109 |
| 2022 |
273.6 |
0.146 |
| 2023 |
277.7 |
0.172 |
| 2024 |
281.1 |
0.177 |
| 2025 |
284.9 |
0.150 |
| 2026 |
292.6 |
0.088 |
| 2027 |
4.1 |
0.021 |
| 2028 |
87.2 |
0.085 |
| 2029 |
94.8 |
0.159 |
| 2030 |
97.8 |
0.220 |
|
|
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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