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Name
  RS Cnc  
AAVSO UID
000-BBQ-327 (21301 observations)  
Constellation
Cancer Sequence
J2000.0
09 10 38.80 +30 57 47.3  (137.66167 +30.96314) Search nearby
B1950.0 09 07 37.81 +31 10 05.4
Proper motion
RA: -11.12 +/- 0.65 mas/yDec: -33.42 +/- 0.24 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 194.496 +42.080
Other names

(Internal only)
AAVSO 0904+31 BD+31 1946 HD 78712
HIP 45058 HR 3639 IRC +30209
RAFGL 1326 SAO 61306  
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Variability type
SRB
Spectral type M6S
Mag. range
5.33 - 6.94 V
Discoverer Edward Pickering
Epoch
29 Apr 1993 (HJD 2449107.0) Ephemeris
Outburst --
Period 242.2 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Other period is 134.6 d.
2 GCVS Team P2 = 1700d. Tc lines are present in the spectrum.
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References
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1 The S-Type Asymptotic Giant Branch Stars RS Cnc, ST Her, OP Her And HR Peg 2005BaltA..14...41A
2 Long-Term VRI Photometry of Small-Amplitude Red Variables. I. Light Curves
and Periods		 2001PASP..113..983P
3 Dunér, N. C.; Hartwig, E.; Muller, G., 1911, Benennung von neu entdeckten
veränderlichen Sternen		 1911AN....190...57.
External Links
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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 = -0.71H = -1.56K = -1.87J - K = 1.16
AllWISE W4 = -3.01
GALEX-DR5 NUV = 17.55
Images
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Supporting Documents
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1 Light curve Otero, Sebastian Alberto 2011-07-10 01:51 UTC Light curve with V data from the literature showing the extreme magnitudes of RS Cnc.
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Campaigns/Programs
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Revision History
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5 Fernig, Leo 2022-11-15 22:31 UTC Discoverer updated from 1911AN....190...57. page 65.
4 Otero, Sebastian Alberto 2011-07-10 01:51 UTC Reference and light curve added.
3 Otero, Sebastian Alberto 2011-07-10 01:45 UTC Periods from 2005BaltA..14...41A. Maximum magnitude from 2001PASP..113..983P. Epoch and minimum magnitude from AAVSO-V data. Spectral type from Skiff (2010).
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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