Epsilon Aurigae
Basic Star System Data
Epsilon
Aurigae, 7 Epsilon Aurigae
HR1605 * HD31964 * SAO 39955
Name: Almaaz * Part of "The Kids"
R.A.
(2000) 05h 01m 58.1s * DEC. (2000) +43d 49' 24"
Distance: 1900/600
? light years
Orbital Radius ~27.6 AU
Epoch: JD 2,435,624/JD
2,435,629
Period: 9885 days 27.1 years Secondary
Eclipse at Phase: ?
Ingress/Egress: 394
days
Total Eclipse: 647 Days
Totality: 446 days
2,455,050 - Year:
2009
1st Contact - JD 2,455,050 * 6 Aug 09
2nd Contact - JD 2,455,187 * 21 Dec 09
Mid-Eclipse - JD 2455410 * 01 Aug 10
3rd Contact - JD 2,454,633 * 12 Mar 11
4th Contact - JD 2,456,697 * 15 May 11
Note:
Dates are
approximate. Because of the out-of-eclipse variability of Epsilon Aurigae
exact dates are ambiguous.
Secondary Eclipse: ?
Maximum Separation Date: 2016
Comparison Star:
Lambda AurigaeSAO40233
HR1729
HD34411R.A. (2000) 05h 19m 08.4s
DEC. (2000) +40d 05' 57"H= 3.33
J= 3.62
I= 3.88
R= 4.19
V= 4.71
B= 5.34
U= 5.46
| Component | A | B |
| Spectral Type | FOIae | B5 ? |
| Diameter | 200s | 2000s |
| Mass | 15s | 14s |
| Luminosity | ? | ? |
| Absolute Mag. | ? | ? |
| Magnitude | ? | ? |
| Temperature | ? | ? |
|
H
|
1.80
|
|
|
|
|
J
|
1.78
|
|
|
|
|
R
|
2.44
|
R
- I
|
+0.44
|
|
|
I
|
2.00
|
V
- I
|
+0.9
|
|
|
V
|
2.99
|
|||
|
B
|
3.53
|
B
- V
|
+0.54
|
|
|
U
|
3.86
|
U
- B
|
+0.33 |
Note:
Magnitudes are average out-of-eclipse
Created 6 October 1996
Modified 6 June 2005
