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Details for Revision 2
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Name
  GR Nor  
AAVSO UID
--  
Constellation
Norma Sequence
J2000.0
16 08 13.30 -58 57 08.3  (242.05542 -58.95231) Search nearby
B1950.0 16 04 02.26 -58 49 10.6
Galactic coord. 326.012 -5.204
Other names

(Internal only)
2MASS J16081140-5857149 ASAS J160812-5857.1 GSC 08722-00394
UCAC4 156-170151    
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Variability type
CEP
Spectral type G/K:IIIe
Mag. range
12.6 - 13 V
Discoverer --
Epoch
29 Sep 1979 (HJD 2444145.82) Ephemeris
Outburst --
Period 1.960002 d
Rise/eclipse dur. 40%  (18.82 h)
Remarks
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1 Otero, Sebastian Alberto The star showing the 12.6-13.0 range in the GCVS and with V= 12.7 in Skiff (2013) is not the star identified as such in those catalogues but a star 17" to its SW. It has B-V= 1.18 (APASS) and J-K= 0.66 (2MASS). The combined magnitude of the 3" pair formerly identified as GR Nor is a whole magnitude fainter, V= 13.7 (UCAC4 156-170166, V~14.2; UCAC4 156-170163, V~14.6). ASAS-3 range (blended?) V= 12.6 - 13.1. APASS single observation V= 12.55 (blended?), V= 12.83 in SPM 4.0 and V= 12.6 derived from UCAC3. Observations in IBVS #4422 agree with these colors and magnitudes. If the variable was the 14th mag. pair and the 12.6 mag. star was constant, the ASAS magnitude couldn't be as faint as V= 13.1.
2 GCVS Team [A/H] = 0.9.
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References
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1 Pojmanski, G., 2002, The All Sky Automated Survey 2002AcA....52..397P
2 Berdnikov, L. N.; Turner, D. G., 1997, Photoelectric BVIc Observations for
the RS CVn Star GR Normae
1997IBVS.4422....1B
3 Lloyd Evans, T., 1984, The spectra of seven variable stars 1984Obs...104..221L
4 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1984Obs...104..221L
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1984Obs...104..221L
6 W.E.Kruytbosch, BAN 6, 233, 1932. 1932BAN.....6..233K
7 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
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Revision History
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3 Otero, Sebastian Alberto 2013-11-19 09:34 UTC Identification from available photometry. Type from 1984Obs...104..221L and IBVS #4422. Range from APASS, ASAS-3 and IBVS #4422. Period and epoch of minimum from ASAS-3 data. UCAC4 position.
2 Admin, VSX 2007-04-04 09:53 UTC Position and spectral type from Brian Skiff's MKTypes.dat [http://vizier.u-strasbg.fr/viz-bin/Cat?III/233B].
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.