21330+2408 HDS 3065 Aa,Ab
21h 32m 57.46s +24° 07' 38.6" P.A. 95.00 sep 0.2 mag 8.78,11.21 Sp K0 dist. 36.26 pc (118.28 l.y.)
| Coord 2000 |
21330+2408 |
|
Discov num |
HDS3065 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
21 32 57.46 +24 07 38.6 |
|
| Date first |
1991 |
|
Date last |
2020 |
|
Obs |
19 |
|
| Pa first |
249 |
|
Pa last |
94.6 |
|
P.A. Now (θ) |
94.6° |
|
| Sep first |
0.6 |
|
Sep last |
0.161 |
|
Sep. Now (ρ) |
0.161" |
|
| Mag pri |
8.78 |
|
Mag sec |
11.21 |
|
delta mag (ΔM) |
2.43 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+344 |
|
Sec motion ra |
+335 |
|
| Pri motion dec |
+051 |
|
Sec motion dec |
+051 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.026 (< 0.3, Physical double)
This double is physical.
21330+2408 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
89793 |
21 32 57 +24 07 39 |
HDS 3065 Aa,Ab |
2020 |
19 |
95 |
0.2 |
8.78 |
11.21 |
2.43 |
Y |
<=== |
| Show |
|
89793 |
21 32 57 +24 07 39 |
OSO 149 AB |
2015 |
7 |
285 |
24.6 |
8.78 |
15.30 |
6.52 |
|
|
| Show |
HD 205142 |
89793 |
21 32 57 +24 07 39 |
OSO 149 AC |
2015 |
7 |
66 |
12.0 |
8.78 |
11.80 |
3.02 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
SAO |
89793 |
|
HIP |
106394 |
|
Tycho2 |
2188-00348-1 |
|
| HD |
205142 |
|
BD |
BD+23 4334 |
|
Distance |
36.26 |
|
Distance ly |
118.28 |
|
ORBITAL ELEMENTS
| Period (P) | 67.3y | |
Periastron (T) | 2025y | |
Semi-major axis (a) | 0.466a | |
| Eccentricity (e) | 0.63 | |
Inclination (i) | 101.3° | |
Longitude of periastron (ω) | 30.7° | |
| Node (Ω) | 75.8° | |
Notes | n | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
244.8 |
0.524 |
| 2001 |
244.2 |
0.503 |
| 2002 |
243.4 |
0.480 |
| 2003 |
242.6 |
0.457 |
| 2004 |
241.7 |
0.432 |
| 2005 |
240.7 |
0.407 |
| 2006 |
239.6 |
0.380 |
| 2007 |
238.3 |
0.352 |
| 2008 |
236.7 |
0.323 |
| 2009 |
234.8 |
0.294 |
| 2010 |
232.6 |
0.263 |
| 2011 |
229.7 |
0.232 |
| 2012 |
225.9 |
0.201 |
| 2013 |
220.7 |
0.169 |
| 2014 |
213.1 |
0.139 |
| 2015 |
201.5 |
0.111 |
| 2016 |
183.4 |
0.089 |
| 2017 |
158.0 |
0.080 |
| 2018 |
132.0 |
0.087 |
| 2019 |
112.8 |
0.107 |
| 2020 |
100.4 |
0.133 |
| 2021 |
92.0 |
0.158 |
| 2022 |
85.7 |
0.179 |
| 2023 |
80.6 |
0.189 |
| 2024 |
75.5 |
0.181 |
| 2025 |
69.2 |
0.149 |
| 2026 |
57.0 |
0.096 |
| 2027 |
11.8 |
0.044 |
| 2028 |
295.6 |
0.070 |
| 2029 |
276.6 |
0.133 |
| 2030 |
269.8 |
0.195 |
|
|
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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