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 |
2031 |
99.6 |
0.268 |
2032 |
100.8 |
0.304 |
2033 |
101.9 |
0.330 |
2034 |
102.8 |
0.345 |
2035 |
103.7 |
0.352 |
2036 |
104.5 |
0.351 |
2037 |
105.4 |
0.343 |
2038 |
106.3 |
0.328 |
2039 |
107.4 |
0.308 |
2040 |
108.6 |
0.282 |
2041 |
110.1 |
0.252 |
2042 |
112.0 |
0.217 |
2043 |
114.7 |
0.178 |
2044 |
119.1 |
0.136 |
2045 |
127.4 |
0.093 |
2046 |
149.2 |
0.053 |
2047 |
212.0 |
0.039 |
2048 |
254.0 |
0.070 |
2049 |
267.5 |
0.111 |
2050 |
273.8 |
0.148 |
|
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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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