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Latest Details
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Name
  BC UMi  
AAVSO UID
000-BJJ-341 (8281 observations)  
Constellation
Ursa Minor Sequence
J2000.0
15 22 39.82 +74 15 17.2  (230.66594 +74.25479) Search nearby
B1950.0 15 23 10.74 +74 25 51.7
Proper motion
RA: -6.5 +/- 1.0 mas/yDec: -0.5 +/- 1.1 mas/ySource: UCAC4
Galactic coord. 110.568 +39.027
Other names

(Internal only)
2MASS J15223979+7415170 ASASSN-V J152239.57+741516.4 GSC 04417-00394
NSVS 987797 VSX J152239.8+741517 ZTF J152239.80+741517.3
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Variability type
SXPHE
Spectral type --
Mag. range
12.530 V (0.500)clear
Discoverer Gregor Srdoc
Epoch
03 Jan 2009 (HJD 2454835.182) Ephemeris
Outburst --
Period 0.13224446 d  (3.173867 h)
Rise/eclipse dur. 29%  (0.9204 h)
Remarks
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References
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1 ZTF Catalog of Periodic Variable Stars (online data) 2020arXiv200508662C
2 Chen, X.; et al., 2020, The Zwicky Transient Facility Catalog of Periodic
Variable Stars
2020arXiv200508662C
3 Kazarovets, E.V.; Samus, N.N.; Durlevich, O.V. et al., 2019, The 82nd
Name-List of Variable Stars. Part I - RA 0hr to 18hr, Novae and
Globular-cluster Variables
2019IBVS.6261....1K
4 P. Wils et al., 2011, IBVS 5977 2011IBVS.5977....1W
External Links
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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 = 12.31H = 12.24K = 12.24J - K = 0.07
AllWISE W1 = 12.23W2 = 12.24W3 = 11.97W4 = 9.62W1 - W2 = -0.01W3 - W4 = 2.35
APASS-DR9 B = 13.46V = 12.89g' = 13.28r' = 12.90i' = 12.87B - V = 0.56
GALEX-DR5 FUV = 17.95NUV = 15.65FUV - NUV = 2.29
Images
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Supporting Documents
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1 discovery paper Srdoc, Gregor 2009-01-05 01:18 UTC
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Revision History
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4 Otero, Sebastian Alberto 2021-10-26 09:36 UTC ZTF name from 2020arXiv200508662C added. Gaia EDR3 position.
3 Admin, VSX 2019-04-04 01:08 UTC Name from [2019IBVS.6261....1K].
2 Admin, VSX 2011-03-23 03:43 UTC Update from [2011IBVS.5977....1W].
1 Srdoc, Gregor 2009-01-05 02:21 UTC Initial submission.