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Current Time: 29 Mar 2025 23:20:10 UTC
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Latest Details
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Name
  BG CMi  
AAVSO UID
000-BBN-245 (61233 observations)  
Constellation
Canis Minor Sequence
J2000.0
07 31 29.01 +09 56 23.0  (112.87087 +9.93972) Search nearby
B1950.0 07 28 44.46 +10 02 48.1
Proper motion
RA: -15.0 +/- 4.0 mas/yDec: -21.1 +/- 3.8 mas/ySource: UCAC4
Galactic coord. 208.479 +13.362
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1SWXRT J073129.0+095622 1SXPS J073128.9+095621 1WGA J0731.4+0956
2E 0728.7+1002 2E 1822 2MASS J07312900+0956231
2MAXI J0730+100 2RXP J073129.0+095625 2SXPS 79473
3A 0729+103 AAVSO 0726+10 Downes BG CMi
Gaia DR3 3161562367602419328 LAMOST J073128.99+095623.1 PBC J0731.5+0955
SBC9 459 SRGA J073128.9+095619 SWIFT J0731.4+0954
SWIFT J0731.5+0957 TIC 234386436 X 07287+100
XMMSL1 J073128.5+095622 XMMSL2 J073128.7+095626  
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Variability type
DQ+E
Spectral type em
Mag. range
13.9 - 16.1 V
Discoverer --
Epoch
29 Jan 2025 (HJD 2460704.701) Ephemeris
Outburst --
Period 0.13474834 d  (3.233960 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto VSP Note: 12.5 Vmag. star 16" to the N.
2 Otero, Sebastian Alberto WD spin period is 913.5 s.
3 2009arXiv0910.0954S White dwarf spin period = 847.03 seconds.
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References
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1 C. Littlefield; M. Bonnardeau; P. Garnavich, 2025, ATel #17050 2025ATel17050....1L
2 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties
2018A&A...616A...1G
3 S. Scaringi et al., 2009, arXiv:0910.0954v1 [astro-ph.GA] 2009arXiv0910.0954S
4 Light curve from CRTS/CSS (Drake et al. 2009, ApJ, 696, 870) 2009ApJ...696..870D
5 The X-ray pulse profile of BG CMi 2007NewA...12..622C
6 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
7 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
8 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) 1994MNRAS.267.1095G
9 P.C.Agrawal, K.M.V.Apparao, K.P.Singh, P.Vivekananda Rao, M.B.K.Sarma, AsAp
131,192,1984.
1984A&A...131..192A
10 K. Mukai, The Intermediate Polars --
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 = 14.55H = 14.28K = 14.14J - K = 0.41
AllWISE W1 = 13.97W2 = 13.78W3 = 12.46W1 - W2 = 0.19
Images
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Supporting Documents
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Revision History
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7 Otero, Sebastian Alberto 2025-02-25 16:04 UTC Period, epoch and minimum magnitude from AAVSO data. Type from 2025ATel17050....1L.
6 Otero, Sebastian Alberto 2020-05-14 23:42 UTC Gaia DR2 position.
5 Admin, VSX 2017-12-15 12:18 UTC Spectral type from Skiff (VizieR on-line data: B/mk)
4 Otero, Sebastian Alberto 2011-10-13 23:56 UTC Type and spin period from 2007NewA...12..622C. Range from AAVSO V-data. UCAC3 position.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-10-09 02:29 UTC Orbital period from [2009arXiv0910.0954S].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.