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Details for Revision 4
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Name
  R UMi  
AAVSO UID
000-BBX-569 (25478 observations)  
Constellation
Ursa Minor Sequence
J2000.0
16 29 57.90 +72 16 49.1  (247.49125 +72.28031) Search nearby
B1950.0 16 30 38.10 +72 23 11.4
Galactic coord. 105.011 +36.238
Other names

(Internal only)
2MASS J16295786+7216491 AAVSO 1631+72 ASASSN-V J162957.85+721648.7
BD+72 732 HD 149683 HIP 80802
HV 3 IRC +70135 RAFGL 1868
TIC 233006012 TYC 4422-1-1 WISEA J162957.88+721649.1
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Variability type
SRB
Spectral type M7IIIe
Mag. range
8.5 - 11.5 V
Discoverer Edward Pickering (1881)
Epoch
--
Outburst --
Period 325.7 d
Rise/eclipse dur. 50%  (163 d)
Remarks
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1 GCVS Team H2O maser.
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References
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1 Sternberg, B., 1927, Messungen von veranderlichen Sternen in der Jahren
1925-1926		 1927PAICU...7D...1S
2 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
External Links
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Supporting Documents
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2 JD light curve Kolb, Matthias 2025-07-26 17:18 UTC JD light curve with AAVSO visual and V data (1889-2025)
1 Phase plot Kolb, Matthias 2025-07-26 17:17 UTC Phase plot with AAVSO Vvisual and V data (1889-2025)
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Campaigns/Programs
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Kolb, Matthias 2025-07-26 17:17 UTC Type, period, epoch, and minimum magnitude from AAVSO visual data (1889-2025).
4 Fernig, Leo 2022-04-22 13:33 UTC Discoverer updated from 1907AnHar..55....1C page 20
3 Billiaert, Bruno 2015-05-27 09:44 UTC Reference added.
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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