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Name
  bet Per  
AAVSO UID
000-BBF-713 (16091 observations)  
Constellation
Perseus Sequence
J2000.0
03 08 10.13 +40 57 20.4  (47.04221 +40.95567) Search nearby
B1950.0 03 04 54.37 +40 45 52.3
Proper motion
RA: 2.99 +/- 1.42 mas/yDec: -1.66 +/- 1.22 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 148.977 -14.900
Other names

(Internal only)
26 Per 1RXS J030810.0+405727 AAVSO 0301+40
ADS 2362 A ALGOL BD+40 673
HD 19356 HIP 14576 HR 936
IRC +40055 RAFGL 443 SAO 38592
X 03049+407    
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Variability type
EA/SD
Spectral type B8V+G8III
Mag. range
2.09 - 3.30 V
Discoverer --
Epoch
11 Sep 2012 (HJD 2456181.84) Ephemeris
Outburst --
Period 2.86736 d
Rise/eclipse dur. 14%
Remarks
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1 Otero, Sebastian Alberto Min II= 2.15 V. Mean period between 1989 and 2013 = 2.867340 d. Period for 2012-2013 = 2.86736 d.
2 GCVS Team Multiple system (Eclipsing pair = Algol AB; Algol C 4.7m, Am, a = 0".10, Porb = 1.862a); Algol AB = ADS 2362 A (B 12.7m, 57".5, 156deg, 1920). P var. P = 2.8673442d (1784 - 1835); P = 2.8673012d (1835 - 1854); P = 2.8672775d (1854 - 1901); P = 2.8672967d (1901 - 1913); P = 2.8672506d (1913 - 1915) [T.Herczeg, Non-periodic Phenomena in Variable Stars, Budapest, 1969, P.465-470.]; Min I = 2424477.806 + 2.86730236d*E (JD2420500 - 25000); Min = 2425917.203 + 2.86732697d*E (JD2425000 - 277000); Min I = 2433194.454 + 2.86731667d*E (JD2427700 - 33600); Min I = 2433928.4944 + 2.86732442d*E (JD2433600 - 37000); Min I = 2437598.6766 + 2.86733732d*E (JD2437000 - 42200); since JD2442200 - see Table. Porb (Algol C) = 1.862a may be traced in the deviations; a period of 32a may also be real. Depth of Min I var. Variable polarization, changes in hydrogen line profiles, sometimes emissions in the spectrum. Radio source with frequent burst of different amplitude, faint X-ray source.
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References
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1 Perryman, M. A. C., et al., 1997, The HIPPARCOS Catalogue 1997HIP...C......0E
2 Bob Nelson's O-C files, 2016 --
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2013-12-09 16:12 UTC Phase plot with HIPPARCOS and AAVSO data
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Revision History
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4 Otero, Sebastian Alberto 2013-12-09 16:10 UTC Range from GCPD, HIPPARCOS and AAVSO V data. Period and epoch from G. Samolyk (AAVSO) V and AAVSO visual data. Spectral type from 2010MNRAS.405.1930L.
3 Otero, Sebastian Alberto 2013-11-27 15:38 UTC Elements from Bob Nelson's O-C files.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.