00251+4803 HDS 56 AB
00h 25m 08.74s +48° 02' 51.0" P.A. 204.00 sep 0.2 mag 7.72,10.63 Sp F8 dist. 43.82 pc (142.94 l.y.)
| Coord 2000 |
00251+4803 |
|
Discov num |
HDS 56 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 25 08.74 +48 02 51.0 |
|
| Date first |
1991 |
|
Date last |
2022 |
|
Obs |
50 |
|
| Pa first |
242 |
|
Pa last |
203.9 |
|
P.A. Now (θ) |
132.9° (calc) |
|
| Sep first |
0.3 |
|
Sep last |
0.197 |
|
Sep. Now (ρ) |
0.127" (calc) |
|
| Mag pri |
7.72 |
|
Mag sec |
10.63 |
|
delta mag (ΔM) |
2.91 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+274 |
|
Sec motion ra |
|
|
| Pri motion dec |
+011 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00251+4803 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
36347 |
00 25 09 +48 02 51 |
HDS 56 AB |
2022 |
50 |
204 |
0.2 |
7.72 |
10.63 |
2.91 |
Y |
<=== |
| Show |
|
36347 |
00 25 09 +48 02 51 |
CRZ 2 AC |
2015 |
2 |
193 |
121.2 |
7.53 |
14.70 |
7.17 |
|
|
| Show |
HD 2057 |
36347 |
00 25 09 +48 02 51 |
SOZ 4 AB,D |
2015 |
2 |
259 |
13.8 |
6.38 |
12.50 |
6.12 |
|
|
| Show |
|
|
00 25 04 +47 59 19 |
RED 14 Ca,Cb |
2005 |
2 |
233 |
0.3 |
16.23 |
16.40 |
0.17 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cassiopeia |
|
SAO |
36347 |
|
HIP |
1987 |
|
Tycho2 |
3252-00597-1 |
|
| Gaia DR2 |
392562179817077120 |
|
HD |
2057 |
|
BD |
BD+47 88 |
|
Distance |
43.82 |
|
| Distance ly |
142.94 |
|
ORBITAL ELEMENTS
| Period (P) | 27.8y | ± 0.1 |
Periastron (T) | 2026.94y | ± 0.06 |
Semi-major axis (a) | 224m | ± 3 |
| Eccentricity (e) | 0.463 | ± 0.007 |
Inclination (i) | 162° | ± 2 |
Longitude of periastron (ω) | 14° | ± 8 |
| Node (Ω) | 112° | ± 8 |
Notes | n | |
Reference | Mit2024 | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
66.4 |
0.123 |
| 2001 |
34.2 |
0.140 |
| 2002 |
10.2 |
0.164 |
| 2003 |
352.7 |
0.191 |
| 2004 |
339.5 |
0.217 |
| 2005 |
329.0 |
0.241 |
| 2006 |
320.3 |
0.262 |
| 2007 |
312.9 |
0.280 |
| 2008 |
306.2 |
0.295 |
| 2009 |
300.2 |
0.307 |
| 2010 |
294.6 |
0.316 |
| 2011 |
289.2 |
0.323 |
| 2012 |
284.0 |
0.326 |
| 2013 |
278.9 |
0.327 |
| 2014 |
273.7 |
0.325 |
| 2015 |
268.5 |
0.320 |
| 2016 |
263.0 |
0.313 |
| 2017 |
257.2 |
0.303 |
| 2018 |
251.0 |
0.290 |
| 2019 |
244.2 |
0.275 |
| 2020 |
236.4 |
0.257 |
| 2021 |
227.5 |
0.237 |
| 2022 |
216.7 |
0.215 |
| 2023 |
203.3 |
0.191 |
| 2024 |
186.0 |
0.166 |
| 2025 |
163.1 |
0.144 |
| 2026 |
132.9 |
0.127 |
| 2027 |
96.4 |
0.120 |
| 2028 |
59.3 |
0.126 |
| 2029 |
28.8 |
0.144 |
| 2030 |
6.2 |
0.169 |
| 2031 |
349.8 |
0.196 |
| 2032 |
337.2 |
0.222 |
| 2033 |
327.1 |
0.245 |
| 2034 |
318.7 |
0.266 |
| 2035 |
311.5 |
0.283 |
| 2036 |
305.0 |
0.298 |
| 2037 |
299.0 |
0.309 |
| 2038 |
293.5 |
0.318 |
| 2039 |
288.1 |
0.323 |
| 2040 |
283.0 |
0.326 |
| 2041 |
277.8 |
0.327 |
| 2042 |
272.7 |
0.324 |
| 2043 |
267.4 |
0.319 |
| 2044 |
261.9 |
0.311 |
| 2045 |
256.0 |
0.301 |
| 2046 |
249.7 |
0.288 |
| 2047 |
242.7 |
0.272 |
| 2048 |
234.8 |
0.253 |
| 2049 |
225.5 |
0.233 |
| 2050 |
214.3 |
0.210 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
