Variable Star DI Her


DI Her = AN 1930.0307 = BD +24 3568 = HD 175227 = SAO 086544 

GCVS result

ID: 400132
Variable star: DI Her
RA 2000: 185326.2
DE 2000: +241641
RA 1950:
DE 1950:
Type of variability: EA/DM
Max (mag): 8.39
Min (mag): 9.11
Photometric system: V
Epoch (JD): 42233.3476
Period (d): 10.5501680
Year of outburst for N, SN:
M-m (or D): 04 *
Spectrum: B5V+B4V
Study reference: 09272
Chart or phot. ref.: 08953
Cases of non-existence:

GCVS NOTE result

Min II 8.95, DII = 0.03P, Min II - Min I = 0.77P (1966 - "1978). Apsidal motion: P = 29000yr +- 4000yr Min II = 2442241.4602 + 10.5501751d*E. A considerable discrepancy between the observed and the theoretical rate of apsidal motion.

GCVS NOTES fulltext search:  

NSV: Suspected Variable NSV  not found.

BRKA result

Variable star: DI Her
Brightness type: C9
Points: 7
RA 2000: 185326.2
DE 2000: +241640
Max (mag): 8.39
Min (mag): 9.11
Sec (mag):
Photometric system: V
Epoch (JD): 51707.391
Period (d): 10.5501680
D (hour): 10
d (hour): 0
Astrophysical note:
Reference: IBVS 4967,IBVS 3293
Finding chart:

MEKA: Variable star DI Her not found.

DSS plate 15'x 15'

Image from the Digitized Sky Survey at the STScI Archive.


Please put the variable's designation into field in common style - for example: ZUMa, zuma, V477Cyg, v1182Cyg, NSV 255, nsv2544. Designation of bright variable stars like Beta Persei type in short style (three letters) - bet Per. The complete cross-identification among more then 30 catalogues will be done after submitting.
Spaces and cases are ingnored..

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 GCVS (2011)  43.675 records
 NSV (1997) 14.811 records
 BRKA (2001)  1.432 records
 MEKA (2001)  147 records
 CzeV, SvkV and RafV catalogues (new variables)
 BCVS (1994)  529.953 records
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