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Latest Details
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Name
  alf Ori  
AAVSO UID
000-BBK-383 (35353 observations)  
Constellation
Orion Sequence
J2000.0
05 55 10.30 +07 24 25.4  (88.79292 +7.40706) Search nearby
B1950.0 05 52 27.80 +07 23 57.8
Proper motion
RA: 27.54 +/- 1.03 mas/yDec: 11.30 +/- 0.65 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 199.787 -8.959
Other names

(Internal only)
58 Ori AAVSO 0549+07 ADS 4506 A
BD+07 1055 Betelgeuse HD 39801
HIP 27989 HR 2061 IRC +10100
RAFGL 836 SAO 113271  
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Variability type
SRC
Spectral type M1-M2Ia-Ibe
Mag. range
0 - 1.3 V
Discoverer J. Herschel (1840)
Epoch
--
Outburst --
Period 423 d
Rise/eclipse dur. --
Remarks
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1 Billiaert, Bruno Secondary period of ~2100 d. (2016arXiv160205108M)
2 GCVS Team VB A (B 14.5m, 39.8", 110deg). Min = 2410600 + 2070d*E (1840 - 1929) [B.W.Kukarkin, Perem. Zvezdy 3, 67, 1931.]. Since 1929 - see Table. The main variation is superimposed by the waves with P = 200 - 400d. Dust-gaseous shell (r = 50") [R.K.Honeycutt, A.P.Bernat, J.E. Kephart, C.E.Gow, M.T.Sandford II, D.L.Lambert, ApJ 239, 565, 1980.].
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References
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1 Montargès, M.; et al., 2016, The close circumstellar environment of
Betelgeuse. IV. VLTI/PIONIER interferometric monitoring of the photosphere
2016arXiv160205108M
2 R.Stothers, K.C.Leung, AsAp 10, 290, 1971. 1971A&A....10..290S
3 W. Ceraski, 1908, Nouvelles de la Science, Variétés 1908BSAFR..22..241C
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 = -2.99H = -4.01K = -4.38J - K = 1.39
AllWISE W1 = -1.37W4 = -4.98
Images
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Supporting Documents
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Campaigns/Programs
 Legacy LPV Program
 LPV Program
Revision History
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4 Billiaert, Bruno 2016-02-28 07:37 UTC Period from 2016arXiv160205108M.
3 Billiaert, Bruno 2015-12-29 18:59 UTC discoverer added (1908BSAFR..22..241C)
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.