22570+2441 COU 542 Aa,Ab
22h 57m 02.47s +24° 40' 55.9" P.A. 160.00 sep 0.1 mag 9.29,9.93 Sp K0 dist. 88.97 pc (290.22 l.y.)
| Coord 2000 |
22570+2441 |
|
Discov num |
COU 542 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
22 57 02.47 +24 40 55.9 |
|
| Date first |
1970 |
|
Date last |
2016 |
|
Obs |
97 |
|
| Pa first |
352 |
|
Pa last |
160.2 |
|
P.A. Now (θ) |
316.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.103 |
|
Sep. Now (ρ) |
0.18" |
|
| Mag pri |
9.29 |
|
Mag sec |
9.93 |
|
delta mag (ΔM) |
0.64 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
+006 |
|
Sec motion dec |
|
|
| Notes |
N
O
W
(See Notes, Orbital solution, ) |
|
This double is physical.
22570+2441 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
22 57 02 +24 40 56 |
COU 542 Aa,Ab |
2016 |
97 |
160 |
0.1 |
9.29 |
9.93 |
0.64 |
Y |
<=== |
| Show |
HD 216963 |
|
22 57 02 +24 40 56 |
POU 5764 AB |
2015 |
8 |
13 |
13.2 |
8.76 |
11.80 |
3.04 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
SAO |
90889 |
|
HIP |
113323 |
|
Tycho2 |
2238-01361-1 |
|
| Gaia DR2 |
2843229252866208000 |
|
HD |
216963 |
|
BD |
BD+23 4640 |
|
Distance |
88.97 |
|
| Distance ly |
290.22 |
|
ORBITAL ELEMENTS
| Period (P) | 30.73y | ± 0.2 |
Periastron (T) | 1987.533y | ± 0.003 |
Semi-major axis (a) | 0.181a | ± 0.5 |
| Eccentricity (e) | 0.375 | ± 0.002 |
Inclination (i) | 21.2° | ± 0.5 |
Longitude of periastron (ω) | 189.6° | ± 317.9 |
| Node (Ω) | 5.2° | ± 0.5 |
Notes | n | |
Reference | Doc2024b | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
358.4 |
0.242 |
| 2001 |
3.9 |
0.246 |
| 2002 |
9.3 |
0.248 |
| 2003 |
14.7 |
0.248 |
| 2004 |
20.1 |
0.247 |
| 2005 |
25.6 |
0.243 |
| 2006 |
31.4 |
0.238 |
| 2007 |
37.4 |
0.231 |
| 2008 |
43.8 |
0.223 |
| 2009 |
50.8 |
0.213 |
| 2010 |
58.5 |
0.201 |
| 2011 |
67.2 |
0.189 |
| 2012 |
77.3 |
0.175 |
| 2013 |
89.0 |
0.161 |
| 2014 |
103.0 |
0.147 |
| 2015 |
119.7 |
0.135 |
| 2016 |
139.5 |
0.125 |
| 2017 |
162.3 |
0.117 |
| 2018 |
187.3 |
0.113 |
| 2019 |
213.4 |
0.113 |
| 2020 |
238.4 |
0.118 |
| 2021 |
260.8 |
0.127 |
| 2022 |
279.5 |
0.140 |
| 2023 |
294.8 |
0.155 |
| 2024 |
307.4 |
0.170 |
| 2025 |
317.9 |
0.185 |
| 2026 |
326.8 |
0.199 |
| 2027 |
334.7 |
0.212 |
| 2028 |
341.7 |
0.222 |
| 2029 |
348.2 |
0.231 |
| 2030 |
354.2 |
0.238 |
| 2031 |
359.9 |
0.244 |
| 2032 |
5.4 |
0.247 |
| 2033 |
10.8 |
0.248 |
| 2034 |
16.2 |
0.248 |
| 2035 |
21.6 |
0.246 |
| 2036 |
27.2 |
0.242 |
| 2037 |
32.9 |
0.237 |
| 2038 |
39.1 |
0.229 |
| 2039 |
45.6 |
0.220 |
| 2040 |
52.8 |
0.210 |
| 2041 |
60.8 |
0.198 |
| 2042 |
69.8 |
0.185 |
| 2043 |
80.3 |
0.171 |
| 2044 |
92.6 |
0.157 |
| 2045 |
107.2 |
0.144 |
| 2046 |
124.7 |
0.132 |
| 2047 |
145.4 |
0.122 |
| 2048 |
168.9 |
0.116 |
| 2049 |
194.3 |
0.113 |
| 2050 |
220.3 |
0.114 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
