22 Vulpeculae
22 Vulpeculae (Vul)
This star system is a new member of the Zeta Aurigae group. This 5th magnitude star system was discovered during the 1984 eclipse. The eclipse in the "V" band is only 0.05 magnitudes but increases to nearly 0.2 magnitudes for the "B" band and nearly 0.5 magnitudes in the "U" band.
Reference: Parsons, S.B., Ake, T.B., and Hopkins, J.L., 1985, Publications of the Astronomical Society of the Pacific; THE AUGUST 1984 ECLIPSE OF 22 VULPECULAE, 97:725-730, August 1985.
22 VULPECULAE DATA
22 Vulpeculae
HD192713
SAO 88416
HR 7741
Name: ?R.A. (1985) 20h 14m 51.2s
DEC. (1985) +23d 27' 44"
|
Comp
|
A | B |
| Spect. |
G3
|
B9
|
| Diam. |
|
|
| Mass |
|
|
| Lum |
4.3
|
3.0
|
| Abs |
|
|
| Mag |
|
|
| Temp |
|
|
|
I
|
3.94
|
|
V
- I
|
+1.23
|
|
R
|
4.43
|
|
R
- I
|
+0.49
|
|
V
|
5.17
|
|
B
- V
|
+1.04
|
|
B
|
6.21
|
|
U
- B
|
+0.70
|
|
U
|
6.91
|
|
|
|
Distance:
2400 light years
(740 pc)
Epoch: JD 2,445,942.3
Period: 249.1 days
Sec Eclipse at Phase: ?
Ingress/Egress: 1.0
days
Totality: 10 days
Next Eclipse:
2,453,664.1 - 20 October 2005
2,453,913.2 - 26 June 2006
2,454,162.3 - 02 March 2007
Secondary Eclipse - ? JD ?
Max Separation Date - ?
Comparison Star:
SAO88417
HD192712
R.A. (1985) 20h 14m
51.2s
DEC. (1985) +23d 41' 43"
I= ? R= ?
V= 7.15 B= 8.15 U= 8.87
Check Star: 18 Sge
R.A. (1985) 20h 15m
40.1s
DEC. (1985) +21d 33' 08"
R - I = ?
V= 6.13 B=7.17 U= 8.09
22 Vul UBV Data
Hopkins Phoenix Observatory
Modified 15 June 2005
