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Name
DI Her
AAVSO UID
Constellation
J2000.0
B1950.0
18 51 21.83 +24 12 53.8
Proper motion
RA: -1.306 +/- 0.034 mas/y Dec: -4.016 +/- 0.049 mas/y Source: Gaia DR1
Galactic coord.
55.001 +10.393
Other names(Internal only)
AAVSO 1849+24
AN 307.1930
ASASSN-V J185326.27+241641.2
BD+24 3568
HD 175227
HIP 92708
SAO 86544
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Variability type
EA/DM
Spectral type
B5V+B4V
Mag. range
8.39 - 9.11 V
Discoverer
--
Epoch
Outburst
--
Period
10.550168 d
Rise/eclipse dur.
4% (0.4220 d)
Remarks
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1
GCVS Team
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.
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References
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Location
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service . These data may not be complete.
2MASS
J = 8.39 H = 8.40 K = 8.45 J - K = -0.06
AllWISE
W1 = 8.47 W2 = 8.50 W3 = 8.55 W4 = 8.75 W1 - W2 = -0.03 W3 - W4 = -0.20
Images
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Supporting Documents
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Revision History
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2
Admin, VSX
2010-01-05 04:43 UTC
Position updated from the GCVS version of November 2009.
1
Admin, VSX
2005-12-18 01:33 UTC
Initial upload.
