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Latest Details
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Name
  zet UMi  
AAVSO UID
000-BBW-499 (No observations)  
Constellation
Ursa Minor Sequence
J2000.0
15 44 03.52 +77 47 40.2  (236.01467 +77.79450) Search nearby
B1950.0 15 45 47.96 +77 56 57.4
Proper motion
RA: 19.91 +/- 0.11 mas/yDec: -1.99 +/- 0.13 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 112.680 +35.658
Other names

(Internal only)
16 UMi BD+78 527 HD 142105
HIP 77055 HR 5903 NSV 7263
SAO 8328 TIC 471011933  
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Variability type
EA+PULS:
Spectral type A3Vn
Mag. range
4.30 V (0.04)TESS
Discoverer --
Epoch
18 Aug 2019 (HJD 2458714.1207)
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Mishevskiy, Nikolay B-V= 0.04. Eclipse duration 0.93 d. Pulsation amplitude 0.007 mag. in the TESS passband with elements HJD 2458683.557 + 0.65941 d. x E.
2 GCVS Team Espin. Var? [R.H.Baker, PASP 38, 95, 1926.].
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References
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1 Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) 2014SPIE.9143E..20R
2 Cowley, A.; et al., 1969, A study of the bright A stars. I. A catalogue of
spectral classifications.
1969AJ.....74..375C
3 J.E.Gore, A Catalogue of suspected variable stars, Proc Roy Irish Acad
(II), 4, 267-410, 1884.
--
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Location    Go   
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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.
AllWISE W1 = 4.12W2 = 3.75W3 = 4.12W4 = 3.96W1 - W2 = 0.36W3 - W4 = 0.16
Images
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Supporting Documents
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2 Phase plot P= 0.66 d Mishevskiy, Nikolay 2020-01-07 03:11 UTC
1 Light curve TESS Mishevskiy, Nikolay 2020-01-06 04:57 UTC
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2020-06-03 09:09 UTC Primary name changed.
3 Mishevskiy, Nikolay 2019-12-23 04:36 UTC Type from TESS data. Mean magnitude from the GCPD. Spectral type from 1969AJ ..... 74..375C.
2 Admin, VSX 2010-01-18 23:18 UTC Update from NSV version of July 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.