00492+5720 A 921 AB
00h 49m 09.10s +57° 19' 37.6" P.A. 2.00 sep 0.2 mag 9.00,9.50 Sp G5
| Coord 2000 |
00492+5720 |
|
Discov num |
A 921 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 49 09.10 +57 19 37.6 |
|
| Date first |
1905 |
|
Date last |
2008 |
|
Obs |
15 |
|
| Pa first |
39 |
|
Pa last |
2.1 |
|
P.A. Now (θ) |
38° (calc) |
|
| Sep first |
0.2 |
|
Sep last |
0.239 |
|
Sep. Now (ρ) |
0.182" (calc) |
|
| Mag pri |
9.00 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+020 |
|
Sec motion ra |
|
|
| Pri motion dec |
+003 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00492+5720 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
21736 |
00 49 09 +57 19 38 |
A 921 AB |
2008 |
15 |
2 |
0.2 |
9.00 |
9.50 |
0.50 |
Y |
<=== |
| Show |
|
21736 |
00 49 09 +57 19 38 |
A 921 AB,C |
2016 |
11 |
269 |
4.8 |
8.60 |
14.00 |
5.40 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cassiopeia |
|
SAO |
21736 |
|
Tycho2 |
3663-02675-1 |
|
Gaia DR2 |
423900666397110016 |
|
| HD |
236538 |
|
ADS |
674 |
|
ORBITAL ELEMENTS
| Period (P) | 120.47y | |
Periastron (T) | 1982.4y | |
Semi-major axis (a) | 0.221a | |
| Eccentricity (e) | 0.696 | |
Inclination (i) | 59.6° | |
Longitude of periastron (ω) | 96.6° | |
| Node (Ω) | 140.3° | |
Notes | n | |
Reference | Cve2012 | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
353.6 |
0.166 |
| 2001 |
355.5 |
0.168 |
| 2002 |
357.4 |
0.169 |
| 2003 |
359.3 |
0.170 |
| 2004 |
1.1 |
0.171 |
| 2005 |
2.9 |
0.172 |
| 2006 |
4.6 |
0.173 |
| 2007 |
6.4 |
0.174 |
| 2008 |
8.1 |
0.175 |
| 2009 |
9.9 |
0.175 |
| 2010 |
11.6 |
0.176 |
| 2011 |
13.3 |
0.176 |
| 2012 |
15.0 |
0.177 |
| 2013 |
16.7 |
0.177 |
| 2014 |
18.4 |
0.178 |
| 2015 |
20.1 |
0.178 |
| 2016 |
21.7 |
0.178 |
| 2017 |
23.4 |
0.179 |
| 2018 |
25.0 |
0.179 |
| 2019 |
26.7 |
0.180 |
| 2020 |
28.3 |
0.180 |
| 2021 |
30.0 |
0.180 |
| 2022 |
31.6 |
0.181 |
| 2023 |
33.2 |
0.181 |
| 2024 |
34.8 |
0.182 |
| 2025 |
36.4 |
0.182 |
| 2026 |
38.0 |
0.182 |
| 2027 |
39.6 |
0.183 |
| 2028 |
41.2 |
0.183 |
| 2029 |
42.8 |
0.184 |
| 2030 |
44.3 |
0.184 |
| 2031 |
45.9 |
0.185 |
| 2032 |
47.4 |
0.186 |
| 2033 |
49.0 |
0.186 |
| 2034 |
50.5 |
0.187 |
| 2035 |
52.0 |
0.188 |
| 2036 |
53.5 |
0.188 |
| 2037 |
55.0 |
0.189 |
| 2038 |
56.5 |
0.190 |
| 2039 |
57.9 |
0.190 |
| 2040 |
59.4 |
0.191 |
| 2041 |
60.8 |
0.192 |
| 2042 |
62.3 |
0.193 |
| 2043 |
63.7 |
0.194 |
| 2044 |
65.1 |
0.194 |
| 2045 |
66.5 |
0.195 |
| 2046 |
67.9 |
0.196 |
| 2047 |
69.3 |
0.197 |
| 2048 |
70.6 |
0.198 |
| 2049 |
72.0 |
0.199 |
| 2050 |
73.3 |
0.199 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
