05098+2802 BU 1047 BC
05h 09m 45.44s +28° 02' 01.6" P.A. 90.00 sep 0.3 mag 9.11,9.71 Sp dG7 dist. 73.91 pc (241.09 l.y.)
| Coord 2000 |
05098+2802 |
|
Discov num |
BU 1047 |
|
Comp |
BC |
|
Coord arcsec 2000 |
05 09 45.44 +28 02 01.6 |
|
| Date first |
1889 |
|
Date last |
2014 |
|
Obs |
45 |
|
| Pa first |
75 |
|
Pa last |
89.7 |
|
P.A. Now (θ) |
74.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.297 |
|
Sep. Now (ρ) |
0.354" |
|
| Mag pri |
9.11 |
|
Mag sec |
9.71 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
dG7 |
|
| Pri motion ra |
+057 |
|
Sec motion ra |
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|
| Pri motion dec |
-059 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
05098+2802 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
76990 |
05 09 45 +28 01 50 |
L 54 Aa,Ab |
1908 |
1 |
351 |
0.2 |
6.04 |
|
|
|
|
| Show |
V1156 Tau |
76990 |
05 09 45 +28 01 50 |
STF 645 A,BC |
2017 |
69 |
29 |
11.3 |
6.04 |
9.11 |
3.07 |
|
|
| Show |
|
|
05 09 45 +28 02 02 |
BU 1047 BC |
2014 |
45 |
90 |
0.3 |
9.11 |
9.71 |
0.60 |
Y |
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Taurus |
|
HIP |
24020 |
|
Tycho2 |
1853-01959-1 |
|
ADS |
3730 |
|
| Distance |
73.91 |
|
Distance ly |
241.09 |
|
ORBITAL ELEMENTS
| Period (P) | 34.38y | |
Periastron (T) | 2001.21y | |
Semi-major axis (a) | 0.282a | |
| Eccentricity (e) | 0.944 | |
Inclination (i) | 122.4° | |
Longitude of periastron (ω) | 114.9° | |
| Node (Ω) | 30.9° | |
Notes | n | |
Reference | Doc2020e | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
49.2 |
0.130 |
| 2001 |
26.1 |
0.041 |
| 2002 |
148.7 |
0.063 |
| 2003 |
125.9 |
0.101 |
| 2004 |
115.1 |
0.134 |
| 2005 |
108.3 |
0.163 |
| 2006 |
103.6 |
0.189 |
| 2007 |
99.9 |
0.212 |
| 2008 |
96.9 |
0.234 |
| 2009 |
94.5 |
0.253 |
| 2010 |
92.3 |
0.270 |
| 2011 |
90.4 |
0.285 |
| 2012 |
88.7 |
0.299 |
| 2013 |
87.1 |
0.311 |
| 2014 |
85.6 |
0.322 |
| 2015 |
84.2 |
0.332 |
| 2016 |
82.9 |
0.339 |
| 2017 |
81.7 |
0.346 |
| 2018 |
80.5 |
0.351 |
| 2019 |
79.3 |
0.354 |
| 2020 |
78.1 |
0.357 |
| 2021 |
77.0 |
0.357 |
| 2022 |
75.8 |
0.356 |
| 2023 |
74.6 |
0.354 |
| 2024 |
73.5 |
0.349 |
| 2025 |
72.2 |
0.343 |
| 2026 |
71.0 |
0.335 |
| 2027 |
69.6 |
0.325 |
| 2028 |
68.2 |
0.312 |
| 2029 |
66.6 |
0.297 |
| 2030 |
64.8 |
0.279 |
|
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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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