04512+1104 BU 883 AB (HD 30810)
04h 51m 12.48s +11° 04' 05.0" P.A. 99.00 sep 0.1 mag 7.75,7.50 Sp F7V+F7V dist. 46.88 pc (152.92 l.y.)
| Coord 2000 |
04512+1104 |
|
Discov num |
BU 883 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 51 12.48 +11 04 05.0 |
|
| Date first |
1879 |
|
Date last |
2021 |
|
Obs |
245 |
|
| Pa first |
18 |
|
Pa last |
98.5 |
|
P.A. Now (θ) |
322.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.113 |
|
Sep. Now (ρ) |
0.159" |
|
| Mag pri |
7.75 |
|
Mag sec |
7.50 |
|
delta mag (ΔM) |
0.25 |
|
Spectral class |
F7V+F7V (yellow-white/yellow-white) |
|
| Pri motion ra |
+087 |
|
Sec motion ra |
|
|
| Pri motion dec |
-011 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
04512+1104 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 30810 |
94163 |
04 51 12 +11 04 05 |
BU 883 AB |
2021 |
245 |
99 |
0.1 |
7.75 |
7.50 |
0.25 |
Y |
<=== |
| Show |
|
94163 |
04 51 12 +11 04 05 |
BU 883 AB,C |
2010 |
18 |
190 |
14.7 |
8.75 |
12.95 |
4.20 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 30810 |
|
Constellation |
Orion |
|
SAO |
94163 |
|
HIP |
22550 |
|
| Tycho2 |
0688-00043-1 |
|
Gaia DR2 |
3294734597482830336 |
|
HD |
30810 |
|
GC |
5906 |
|
| ADS |
3475 |
|
BD |
BD+10 654 |
|
Distance |
46.88 |
|
Distance ly |
152.92 |
|
ORBITAL ELEMENTS
| Period (P) | 16.28y | |
Periastron (T) | 1988.39y | |
Semi-major axis (a) | 0.188a | |
| Eccentricity (e) | 0.46 | |
Inclination (i) | 17° | |
Longitude of periastron (ω) | 77° | |
| Node (Ω) | 147° | |
Notes | n | |
Reference | Sod1999 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
80.1 |
0.229 |
| 2001 |
94.1 |
0.206 |
| 2002 |
112.1 |
0.178 |
| 2003 |
137.8 |
0.144 |
| 2004 |
180.3 |
0.109 |
| 2005 |
246.3 |
0.099 |
| 2006 |
299.3 |
0.130 |
| 2007 |
329.3 |
0.169 |
| 2008 |
348.7 |
0.201 |
| 2009 |
3.2 |
0.226 |
| 2010 |
15.2 |
0.244 |
| 2011 |
25.8 |
0.256 |
| 2012 |
35.6 |
0.262 |
| 2013 |
45.3 |
0.263 |
| 2014 |
55.0 |
0.258 |
| 2015 |
65.3 |
0.249 |
| 2016 |
76.6 |
0.234 |
| 2017 |
89.9 |
0.213 |
| 2018 |
106.5 |
0.187 |
| 2019 |
129.4 |
0.154 |
| 2020 |
165.9 |
0.118 |
| 2021 |
226.9 |
0.097 |
| 2022 |
287.4 |
0.120 |
| 2023 |
322.4 |
0.159 |
| 2024 |
343.9 |
0.193 |
| 2025 |
359.5 |
0.220 |
| 2026 |
12.0 |
0.240 |
| 2027 |
22.9 |
0.253 |
| 2028 |
32.9 |
0.261 |
| 2029 |
42.6 |
0.263 |
| 2030 |
52.2 |
0.260 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
