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Latest Details
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Name
  zet01 UMa  
AAVSO UID
000-BBT-591 (No observations)  
Constellation
Ursa Major Sequence
J2000.0
13 23 55.54 +54 55 31.3  (200.98143 +54.92536) Search nearby
B1950.0 13 21 54.98 +55 11 10.0
Proper motion
RA: 119.01 mas/yDec: -25.97 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 113.110 +61.579
Other names

(Internal only)
79 UMa A zet UMa A ADS 8891 A
BD+55 1598 A HD 116656 HIP 65378
HR 5054 IRC +60224 Mizar A
NSV 6224 RAFGL 1621S SAO 28737
TIC 159190000    
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Variability type
HB
Spectral type A2V+A2V
Mag. range
2.24 V (0.001)TESS
Discoverer --
Epoch
--
Outburst --
Period 20.5351 d
Rise/eclipse dur. --
Remarks
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1 2021A&A...647A..12K Mizar B (sep. 14") is a 176 d. SB. Together with Alcor (80 UMa), which is also a binary, they form a hierarchical sextuple.
2 GCVS Team [zeta]1 UMa=ADS 8891A (B 3.95, 14".5, 150deg); SB, P=20d.536. Cl UMa member.
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References
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1 Kolaczek-Szymanski, P. A.; et al., 2021, Massive heartbeat stars from TESS.
I. TESS sectors 1-16		 2021A&A...647A..12K
2 P.Guthnick, AN 204, 243, 1917. 1917AN....204..243G
External Links
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Images
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2024-06-13 12:24 UTC Type, period and amplitude from 2021A&A...647A..12K.
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.

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