00308+4732 BU 394 AB (HD 2675)
00h 30m 45.56s +47° 31' 47.5" P.A. 278.00 sep 0.9 mag 8.49,8.77 Sp G0 dist. 49.33 pc (160.91 l.y.)
| Coord 2000 |
00308+4732 |
|
Discov num |
BU 394 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 30 45.56 +47 31 47.5 |
|
| Date first |
1876 |
|
Date last |
2020 |
|
Obs |
71 |
|
| Pa first |
278 |
|
Pa last |
278.1 |
|
P.A. Now (θ) |
278.9° (calc) |
|
| Sep first |
0.8 |
|
Sep last |
0.881 |
|
Sep. Now (ρ) |
0.99" (calc) |
|
| Mag pri |
8.49 |
|
Mag sec |
8.77 |
|
delta mag (ΔM) |
0.28 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+018 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-057 |
|
Sec motion dec |
-052 |
|
| Notes |
O
T
(Orbital solution, Parallax indicates physical) |
|
rPM=0.394
This double is physical.
00308+4732 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 2675 |
36427 |
00 30 46 +47 31 48 |
BU 394 AB |
2020 |
71 |
278 |
0.9 |
8.49 |
8.77 |
0.28 |
Y |
<=== |
| Show |
|
36427 |
00 30 46 +47 31 48 |
TOK 223 AC |
2015 |
10 |
201 |
105.5 |
8.49 |
10.95 |
2.46 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 2675 |
|
Constellation |
Cassiopeia |
|
SAO |
36427 |
|
HIP |
2414 |
|
| Tycho2 |
3252-02035-1 |
|
Gaia DR2 |
390973763472251392 |
|
HD |
2675 |
|
ADS |
416 |
|
| BD |
BD+46 95 |
|
Distance |
49.33 |
|
Distance ly |
160.91 |
|
ORBITAL ELEMENTS
| Period (P) | 142.14y | |
Periastron (T) | 1992.37y | |
Semi-major axis (a) | 0.689a | |
| Eccentricity (e) | 0.847 | |
Inclination (i) | 78° | |
Longitude of periastron (ω) | 2° | |
| Node (Ω) | 102.1° | |
Notes | | |
Reference | Zul1997b | |
| Equinox | 2000 | |
Last observation | 1991 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
268.7 |
0.282 |
| 2001 |
270.1 |
0.325 |
| 2002 |
271.2 |
0.366 |
| 2003 |
272.1 |
0.405 |
| 2004 |
272.9 |
0.443 |
| 2005 |
273.5 |
0.479 |
| 2006 |
274.0 |
0.513 |
| 2007 |
274.5 |
0.546 |
| 2008 |
274.9 |
0.578 |
| 2009 |
275.3 |
0.608 |
| 2010 |
275.7 |
0.637 |
| 2011 |
276.0 |
0.666 |
| 2012 |
276.3 |
0.693 |
| 2013 |
276.5 |
0.719 |
| 2014 |
276.8 |
0.745 |
| 2015 |
277.0 |
0.769 |
| 2016 |
277.2 |
0.793 |
| 2017 |
277.4 |
0.816 |
| 2018 |
277.6 |
0.838 |
| 2019 |
277.8 |
0.859 |
| 2020 |
278.0 |
0.880 |
| 2021 |
278.2 |
0.900 |
| 2022 |
278.3 |
0.919 |
| 2023 |
278.5 |
0.938 |
| 2024 |
278.6 |
0.956 |
| 2025 |
278.8 |
0.973 |
| 2026 |
278.9 |
0.990 |
| 2027 |
279.0 |
1.006 |
| 2028 |
279.2 |
1.022 |
| 2029 |
279.3 |
1.037 |
| 2030 |
279.4 |
1.051 |
| 2031 |
279.5 |
1.065 |
| 2032 |
279.6 |
1.079 |
| 2033 |
279.8 |
1.091 |
| 2034 |
279.9 |
1.104 |
| 2035 |
280.0 |
1.116 |
| 2036 |
280.1 |
1.127 |
| 2037 |
280.2 |
1.138 |
| 2038 |
280.3 |
1.149 |
| 2039 |
280.4 |
1.159 |
| 2040 |
280.5 |
1.168 |
| 2041 |
280.6 |
1.178 |
| 2042 |
280.7 |
1.186 |
| 2043 |
280.8 |
1.194 |
| 2044 |
280.9 |
1.202 |
| 2045 |
281.0 |
1.210 |
| 2046 |
281.0 |
1.217 |
| 2047 |
281.1 |
1.223 |
| 2048 |
281.2 |
1.229 |
| 2049 |
281.3 |
1.235 |
| 2050 |
281.4 |
1.240 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
