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Latest Details
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Name
  SY UMa  
AAVSO UID
000-BCX-402 (924 observations)  
Constellation
Ursa Major Sequence
J2000.0
09 55 43.00 +49 49 11.4  (148.92917 +49.81983) Search nearby
B1950.0 09 52 27.81 +50 03 25.2
Proper motion
RA: -4.57 +/- 0.18 mas/yDec: 20.31 +/- 0.13 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 166.651 +49.634
Other names

(Internal only)
31 UMa AAVSO 0949+50 AN 100.1914
BD+50 1698 GSC 03436-01469 HD 85795
HIP 48682 HR 3917 IRAS 09524+5003
PPM 51579 SAO 27430 TYC 3436-1469-1
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Variability type
CST
Spectral type A3III
Mag. range
5.28 V
Discoverer Karl Mueller and Paul Kempf (1914)
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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References
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1 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
2 Hartwig, E.; Muller, G., 1921, Benennung von neu entdeckten veraenderlichen
Sternen
1921AN....212..353.
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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 = 5.53H = 5.14K = 5.08J - K = 0.45
AllWISE W1 = 5.07W2 = 4.89W3 = 5.14W4 = 5.02W1 - W2 = 0.18W3 - W4 = 0.11
SDSS-DR12 u = 10.40g = 25.19r = 10.04i = 24.81z = 7.18u - g = -14.78r - i = -14.76
Images
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Supporting Documents
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Revision History
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4 Fernig, Leo 2023-03-29 20:22 UTC Discoverer updated from 1921AN....212..353. page 366.
3 Otero, Sebastian Alberto 2017-02-08 03:30 UTC Magnitude from HIPPARCOS and GCPD data.
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.