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Latest Details
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Name
  Z UMa  
AAVSO UID
000-BBS-553 (116607 observations)  
Constellation
Ursa Major Sequence
J2000.0
11 56 30.22 +57 52 17.6  (179.12592 +57.87156) Search nearby
B1950.0 11 53 54.31 +58 09 00.1
Proper motion
RA: -7.92 +/- 0.51 mas/yDec: -10.13 +/- 0.54 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 136.627 +57.772
Other names

(Internal only)
AAVSO 1151+58 AN 25.1904 BD+58 1346
HD 103681 HIP 58225 HV 731
IRC +60213 RAFGL 1519 SAO 28194
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Variability type
SRB
Spectral type M5IIIe
Mag. range
6.2 - 9.7 V
Discoverer Thomas King (1904)
Epoch
19 May 2025 (HJD 2460815) Ephemeris
Outburst --
Period 189 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team Usually 2 Max and 2 Min during a cycle.
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References
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1 M.K.Suchko, JAAVSO 9, N2, 74, 1980. 1980JAVSO...9...74S
2 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
External Links
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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.
2MASS J = 1.70H = 0.76K = 0.53J - K = 1.17
AllWISE W3 = -0.21W4 = -0.88W3 - W4 = 0.67
GALEX-DR5 NUV = 17.91
SDSS-DR12 u = 10.45g = 8.10r = 10.79i = 10.16z = 8.44u - g = 2.35r - i = 0.63
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 11 56 30.22 +57 52 17.6 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 JD light curve Kolb, Matthias 2025-07-19 14:08 UTC JD light curve with AAVSO V data (1976-2025)
1 Phase plot Kolb, Matthias 2025-07-18 17:25 UTC Phase plot with AAVSO V data (1976-2025)
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Campaigns/Programs
 Binocular program
 Legacy LPV Program
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Kolb, Matthias 2025-07-12 17:08 UTC Period, epoch, and minimum magnitude from AAVSO V data.
3 Fernig, Leo 2022-04-22 13:32 UTC Discoverer updated from 1907AnHar..55....1C page 16
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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