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Details for Revision 2
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Name
  NSV 25977  
AAVSO UID
--  
Constellation
Cepheus Sequence
J2000.0
22 55 50.30 +60 00 34.5  (343.95958 +60.00958) Search nearby
B1950.0 22 53 48.88 +59 44 32.5
Galactic coord. 108.952 +0.313
Other names

(Internal only)
BD+59 2602 HD 240121 HIP 113233
Renson 59870 SAO 34961 TYC 4278-969-1
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Variability type --
Spectral type B8
Mag. range
9.56 V (0.1)B
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Hümmerich, Stefan Anti-phase variations of the B and V light curves, which results in peculiar (B-V) index variations. Amplitude in B = 0.08 mag.
2 GCVS Team Preliminary P = 2.025d [R.Groebel, BAV-R 41, Nr.1, 19, 1992.]. B-V = 0.14 - 0.28 [K.Saerg, S.Wramdemark, AsAp Suppl 2, No.3, 251, 1970.]. Named No.104 = BD+59 2604, but the chart in [K.Saerg, S.Wramdemark, AsAp Suppl 2, No.3, 251, 1970.] corresponds to BD+59 2602.
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References
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1 Gröbel, R.; Hümmerich, S.; Paunzen, E.; Bernhard, K., 2017, HD 240121 - An
ACV variable showing anti-phase variations of the B and V light curves		 2017NewA...50..104G
2 Renson, P.; Manfroid, J., 2009, Catalogue of Ap, HgMn and Am stars 2009A&A...498..961R
3 R.Groebel, IAPPP Comm No.49, 25, 1992. 1992IAPPP..49...25G
4 K.Saerg, S.Wramdemark, AsAp Suppl 2, No.3, 251, 1970. 1970A&AS....2..251S
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1928AnHar.100...49C
6 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1928AnHar.100...49C
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Supporting Documents
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Revision History
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3 Hümmerich, Stefan 2016-09-13 00:30 UTC Type, period, epoch and amplitude from 2017NewA...50...104G. Spectral type from 2009A&A...498..961R. V magnitude derived from Hipparcos and BSM data for the comparison star. Hipparcos position.
2 Admin, VSX 2007-04-04 09:55 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.

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