Dauban V250
| name | Dauban V250 |
| constellation | Per |
| J2000.0 | 01 50 55.98 +54 12 53.3 |
| other names | 2MASS J01505598+5412532 |
| type | EB/EA |
| mag range | 10.3 - 11.0 CR |
| period (days) | 2.30138 |
| epoch | 2015-03-06 (HJD 2457088.2152) |
| color | J-K = 0.06 |
| remarks | -- |
| links | -- |
| discovery | 06/01/2013 |
DSS2-R
DSS2-IR
Confirmation of variability
Additional observations have been made by François Kugel (LX200 reflector) and Hubert Boussier.
The minimum has been measured several times and confirms the variability. The suspected period was initially 1.15068 days.
The correct period was found by Raoul Behrend, it is 2.30138 days. Dauban V250 is an eclipsing binary with type EB/EA.
Spectra
A spectrum of Dauban V250 was taken in 2014 by Hubert Boussier:
A high resolution spectrum, centered on the Hbeta line, was also measured with a 1m telescope by a team of amateurs (P.Dubreuil, A.Lopez, S.Ubaud, T.De France and T.Garrel).
See here.