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Details for Revision 3
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Name
  BE UMa  
AAVSO UID
000-BFP-018 (108 observations)  
Constellation
Ursa Major Sequence
J2000.0
11 57 44.82 +48 56 18.3  (179.43677 +48.93842) Search nearby
B1950.0 11 55 09.91 +49 13 00.4
Galactic coord. 144.811 +65.846
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J11574483+4856184 ATO J179.4368+48.9383 CRTS J115744.8+485619
CSS_J115744.8+485619 Downes BE UMa GALEX J115744.8+485617
GSC2.3 N21200127065 Gaia DR2 786919754746647424 Gaia DR3 786919754746647424
LAMOST J115744.83+485618.1 LINEAR 2639856 LTNF 1
PG 1155+492 PK 144+65 1 PN G144.8+65.8
PTF1 J115744.84+485618.2 SBC9 696 SBSS 1155+492
SDSS J115744.83+485618.1 SDSS J115744.83+485618.2 SDSS J115744.83+485618.4
SVS 1424 TIC 11940011 UCAC4 695-052298
USNO-A2.0 1350-08033471 USNO-B1.0 1389-0221431 WD 1155+492
WISEA J115744.84+485618.1 ZTF J115744.84+485618.1 ZTF18aaadclg
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Variability type
EA/WD+R
Spectral type DO+MVe
Mag. range
14.8 - 17.8 B
Discoverer --
Epoch
28 Jan 1982 (HJD 2444998.2809) Ephemeris
Outburst --
Period 2.2911665 d
Rise/eclipse dur. 2%  (1.100 h)
Remarks
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1 GCVS Team d = 0.006P. Outside eclipses var 14.8m <= B <= 16.0m (reflection effect). The depth of eclipses for lambda lambda 3330 - 3700 A is greater than 4.3m,that for lambda lambda 5265 - 6005 A is 1.5m.
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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 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive		 2019PASP..131a8003M
4 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties		 2018A&A...616A...1G
5 Drake, A. J.; et al., 2014, The Catalina Surveys Periodic Variable Star
Catalog (version May 24, 2017)		 2014ApJS..213....9D
6 Drake, A. J.; et al., 2014, The Catalina Surveys Periodic Variable Star
Catalog (version May 24, 2017)		 2014ApJS..213....9D
7 L. Palaversa, Z. Ivezic, L. Eyer et al., 2013, arXiv:1308.0357
[astro-ph.GA]		 2013arXiv1308.0357P
8 Light curve from CRTS/CSS (Drake et al. 2009, ApJ, 696, 870) 2009ApJ...696..870D
9 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
10 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
11 Ferguson, D. H.; Liebert, J.; Cutri, R.; et al., 1987, BE Ursae Majoris: A
Detached Binary with a Unique Reprocessing Spectrum		 1987ApJ...316..399F
12 C.BarbierI, R.Barbon, L.de Bastiani, G.Romano, P.Pesch, N.Sanduleak, AsAp
Suppl 61, 163, 1985.		 1985A&AS...61..163B
13 V.P.Goranskij, S.Yu.Shugarov, Manuscript, 1985. --
External Links
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Supporting Documents
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2 Zoomed phase plot Otero, Sebastian Alberto 2025-04-10 20:55 UTC Phase plot showing the primary minimum and the amplitude difference between passbands.
1 Phase plot Otero, Sebastian Alberto 2025-04-10 20:53 UTC Phase plot with ZTF data.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
6 Otero, Sebastian Alberto 2025-04-10 20:53 UTC Period, epoch, eclipse duration and range from ZTF data. Spectral type from 1987ApJ...316..399F.
5 Otero, Sebastian Alberto 2021-10-26 10:35 UTC ZTF name from 2020arXiv200508662C added. Gaia EDR3 position.
4 Otero, Sebastian Alberto 2020-05-14 23:52 UTC Gaia DR2 position.
3 Otero, Sebastian Alberto 2018-08-28 01:34 UTC Type from 2014ApJS..213....9D (2017 version). UCAC4 position.
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.

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