00251+4803 HDS 56 AB
00h 25m 08.74s +48° 02' 51.0" P.A. 273.00 sep 0.3 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 |
2013 |
|
Obs |
17 |
|
| Pa first |
242 |
|
Pa last |
272.7 |
|
P.A. Now (θ) |
210.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.325 |
|
Sep. Now (ρ) |
0.21" |
|
| 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 |
2013 |
17 |
273 |
0.3 |
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
5 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 |
|
GC |
489 |
|
BD |
BD+47 88 |
|
| Distance |
43.82 |
|
Distance ly |
142.94 |
|
ORBITAL ELEMENTS
| Period (P) | 28.05y | ± 0.46 |
Periastron (T) | 1999.29y | ± 0.55 |
Semi-major axis (a) | 0.23a | ± 0.008 |
| Eccentricity (e) | 0.481 | ± 0.058 |
Inclination (i) | 164° | ± 3.8 |
Longitude of periastron (ω) | 358.9° | ± 15.7 |
| Node (Ω) | 96.1° | ± 16.2 |
Notes | n | |
Reference | Cve2011a | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
69.3 |
0.123 |
| 2001 |
35.7 |
0.140 |
| 2002 |
10.9 |
0.165 |
| 2003 |
352.9 |
0.192 |
| 2004 |
339.3 |
0.219 |
| 2005 |
328.6 |
0.244 |
| 2006 |
319.8 |
0.266 |
| 2007 |
312.3 |
0.285 |
| 2008 |
305.6 |
0.301 |
| 2009 |
299.6 |
0.315 |
| 2010 |
294.0 |
0.325 |
| 2011 |
288.7 |
0.333 |
| 2012 |
283.7 |
0.338 |
| 2013 |
278.7 |
0.340 |
| 2014 |
273.8 |
0.340 |
| 2015 |
268.8 |
0.337 |
| 2016 |
263.7 |
0.331 |
| 2017 |
258.3 |
0.322 |
| 2018 |
252.6 |
0.310 |
| 2019 |
246.4 |
0.296 |
| 2020 |
239.4 |
0.279 |
| 2021 |
231.5 |
0.258 |
| 2022 |
222.1 |
0.235 |
| 2023 |
210.5 |
0.210 |
| 2024 |
195.6 |
0.182 |
| 2025 |
175.3 |
0.155 |
| 2026 |
147.3 |
0.133 |
| 2027 |
110.7 |
0.120 |
| 2028 |
71.2 |
0.123 |
| 2029 |
37.2 |
0.139 |
| 2030 |
12.0 |
0.164 |
|
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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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