00504+5038 BU 232 AB (HD 4777)
00h 50m 25.10s +50° 37' 49.6" P.A. 256.00 sep 0.9 mag 8.46,8.79 Sp F5 dist. 101.11 pc (329.82 l.y.)
| Coord 2000 |
00504+5038 |
|
Discov num |
BU 232 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 50 25.10 +50 37 49.6 |
|
| Date first |
1876 |
|
Date last |
2018 |
|
Obs |
126 |
|
| Pa first |
288 |
|
Pa last |
255.6 |
|
P.A. Now (θ) |
258.3° |
|
| Sep first |
0.5 |
|
Sep last |
0.894 |
|
Sep. Now (ρ) |
0.848" |
|
| Mag pri |
8.46 |
|
Mag sec |
8.79 |
|
delta mag (ΔM) |
0.33 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-036 |
|
Sec motion ra |
-036 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00504+5038 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 4777 |
21759 |
00 50 25 +50 37 50 |
BU 232 AB |
2018 |
126 |
256 |
0.9 |
8.46 |
8.79 |
0.33 |
Y |
<=== |
| Show |
|
21759 |
00 50 25 +50 37 50 |
BU 232 AB,C |
2018 |
45 |
299 |
24.5 |
8.46 |
10.06 |
1.60 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 4777 |
|
Constellation |
Cassiopeia |
|
SAO |
21759 |
|
HIP |
3926 |
|
| Tycho2 |
3274-01051-1 |
|
Gaia DR2 |
415001627292909440 |
|
HD |
4777 |
|
ADS |
684 |
|
| BD |
BD+49 215 |
|
Distance |
101.11 |
|
Distance ly |
329.82 |
|
ORBITAL ELEMENTS
| Period (P) | 201y | ± 9 |
Periastron (T) | 1914.52y | ± 0.29 |
Semi-major axis (a) | 0.531a | ± 0.033 |
| Eccentricity (e) | 0.621 | ± 0.014 |
Inclination (i) | 31.9° | ± 2.6 |
Longitude of periastron (ω) | 11.4° | ± 5.4 |
| Node (Ω) | 64.9° | ± 5.7 |
Notes | n | |
Reference | Sca2008a | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
247.7 |
0.846 |
| 2001 |
248.2 |
0.848 |
| 2002 |
248.6 |
0.850 |
| 2003 |
249.1 |
0.851 |
| 2004 |
249.6 |
0.852 |
| 2005 |
250.0 |
0.853 |
| 2006 |
250.5 |
0.854 |
| 2007 |
250.9 |
0.855 |
| 2008 |
251.4 |
0.856 |
| 2009 |
251.9 |
0.856 |
| 2010 |
252.3 |
0.856 |
| 2011 |
252.8 |
0.857 |
| 2012 |
253.2 |
0.857 |
| 2013 |
253.7 |
0.857 |
| 2014 |
254.1 |
0.856 |
| 2015 |
254.6 |
0.856 |
| 2016 |
255.1 |
0.856 |
| 2017 |
255.5 |
0.855 |
| 2018 |
256.0 |
0.854 |
| 2019 |
256.4 |
0.853 |
| 2020 |
256.9 |
0.852 |
| 2021 |
257.4 |
0.851 |
| 2022 |
257.8 |
0.850 |
| 2023 |
258.3 |
0.848 |
| 2024 |
258.8 |
0.846 |
| 2025 |
259.2 |
0.845 |
| 2026 |
259.7 |
0.843 |
| 2027 |
260.2 |
0.841 |
| 2028 |
260.7 |
0.838 |
| 2029 |
261.1 |
0.836 |
| 2030 |
261.6 |
0.834 |
|
|
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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