05020+4349 BU 554 AB
05h 01m 58.13s +43° 49' 23.9" P.A. 226.00 sep 29.8 mag 2.99,14.00 Sp A2I dist. 653.59 pc (2132.01 l.y.)
| Coord 2000 |
05020+4349 |
|
Discov num |
BU 554 |
|
Comp |
AB |
|
Coord arcsec 2000 |
05 01 58.13 +43 49 23.9 |
|
| Date first |
1878 |
|
Date last |
2013 |
|
Obs |
8 |
|
| Pa first |
225 |
|
Pa last |
225.9 |
|
P.A. Now (θ) |
225.9° |
|
| Sep first |
29.3 |
|
Sep last |
29.84 |
|
Sep. Now (ρ) |
29.84" |
|
| Mag pri |
2.99 |
|
Mag sec |
14.00 |
|
delta mag (ΔM) |
11.01 |
|
Spectral class |
A2I (white) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
05020+4349 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
39955 |
05 01 58 +43 49 24 |
BU 554 AB |
2013 |
8 |
226 |
29.8 |
2.99 |
14.00 |
11.01 |
Y |
<=== |
| Show |
Almaaz |
39955 |
05 01 58 +43 49 24 |
BU 554 AC |
2019 |
13 |
277 |
43.6 |
2.99 |
11.26 |
8.27 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
BU 554 AD |
2013 |
9 |
316 |
45.0 |
2.99 |
13.40 |
10.41 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
BU 554 AE |
2013 |
13 |
48 |
207.3 |
2.99 |
9.60 |
6.61 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
STU 19 AF |
2013 |
8 |
272 |
222.9 |
2.99 |
11.02 |
8.03 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
SMR 25 AG |
2013 |
4 |
15 |
100.9 |
2.99 |
14.00 |
11.01 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
SMR 25 AH |
2013 |
4 |
22 |
123.2 |
2.99 |
13.50 |
10.51 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
SMR 25 AI |
2013 |
4 |
141 |
111.4 |
2.99 |
13.50 |
10.51 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
SMR 25 AJ |
2013 |
4 |
160 |
132.3 |
2.99 |
13.50 |
10.51 |
|
|
| Show |
|
39955 |
05 01 58 +43 49 24 |
SMR 25 AK |
2012 |
1 |
301 |
28.8 |
2.99 |
14.00 |
11.01 |
|
|
11-fold system
11 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Almaaz |
|
Constellation |
Auriga |
|
SAO |
39955 |
|
HIP |
23416 |
|
| Tycho2 |
2907-01275-1 |
|
Gaia DR2 |
205499655242974464 |
|
HD |
31964 |
|
HR |
1605 |
|
| GC |
6123 |
|
ADS |
3605 |
|
BD |
BD+43 1166 |
|
Bayer |
Epsilon Aurigae |
|
| Bayer name |
Eps Aur |
|
Flamsteed |
7 Aurigae |
|
Flamsteed name |
7 Aur |
|
FK5 |
183 |
|
| Distance |
653.59 |
|
Distance ly |
2132.01 |
|
Bayer greek |
ε Aur |
|
ORBITAL ELEMENTS
| Period (P) | 9887d (27.07y) | |
Periastron (T) | 33373.5d (1950.249y) | |
Semi-major axis (a) | 22.4m | |
| Eccentricity (e) | 0.07 | |
Inclination (i) | 87° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 264° | |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
257.4 |
0.009 |
| 2001 |
260.3 |
0.013 |
| 2002 |
261.8 |
0.017 |
| 2003 |
262.8 |
0.020 |
| 2004 |
263.7 |
0.021 |
| 2005 |
264.5 |
0.021 |
| 2006 |
265.4 |
0.019 |
| 2007 |
266.5 |
0.016 |
| 2008 |
268.2 |
0.013 |
| 2009 |
271.6 |
0.008 |
| 2010 |
285.7 |
0.003 |
| 2011 |
57.3 |
0.003 |
| 2012 |
75.3 |
0.007 |
| 2013 |
79.1 |
0.012 |
| 2014 |
80.9 |
0.016 |
| 2015 |
82.0 |
0.020 |
| 2016 |
82.8 |
0.022 |
| 2017 |
83.4 |
0.024 |
| 2018 |
84.0 |
0.024 |
| 2019 |
84.7 |
0.023 |
| 2020 |
85.3 |
0.022 |
| 2021 |
86.2 |
0.019 |
| 2022 |
87.3 |
0.016 |
| 2023 |
89.3 |
0.011 |
| 2024 |
93.7 |
0.007 |
| 2025 |
121.4 |
0.002 |
| 2026 |
246.8 |
0.004 |
| 2027 |
257.1 |
0.009 |
| 2028 |
260.2 |
0.013 |
| 2029 |
261.7 |
0.017 |
| 2030 |
262.8 |
0.019 |
|
|
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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