NNo GCVS J2000.0 Type Max Min I Min II Epoch Year Period M-m/D Spectrum References Other desig. p.m.(as/yr) Epoch Ident. New type GCVS
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601030 |V1030 Ori *|053847.21 -023540.5 |SXARI | 6.61 | 6.77 | 6.71 |V |42778.819 | | 1.19080 | |B3Vp(He+)ea |09524 08043| |+0.002 -0.001|2000.0 | |Tyc2 | |V1030 Ori |
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_______________Cross-identifications:_______________
V1030 Ori = ADS 04241 |E
V1030 Ori = BAY Ori sig |E
V1030 Ori = BD -02 1327 |
V1030 Ori = BS 01932 |
V1030 Ori = GSC 04771.01194 |
V1030 Ori = HD 037479 |
V1030 Ori = SAO 132408 |
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Reference to a chart or photograph:08043. W.H. Warren, Jr., J.E.Hesser, ApJ Suppl 34, 115, 1977 {1977ApJS...34..115W}
Reference to a study of the star:
09524. D. Groote, K.Hunger, AsAp 116, N1, 64, 1982 {1982AA...116...64G}
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Remark:
In the region of the nebula IC 434. (sig Ori) E
(A 4.1m; B 5.1m, A = 0.247", P = 170yr; C 8.79m, 11.2",
238deg; D 6.66m, 12.9", 84deg; E 41.6", 61deg). Min I
(HeI) = 2442802.48 + 1.19080d*E. Unusual helium variable.
Epoch of Min I brightness is given in the Table
(Min II 6.71, Min II - Min I = 0.43P). This epoch is being
observed by 0.18P later than the epoch of minimum strength
of the HeI lambda 4026 A line. According to [09524], light
minima are due to "eclipses" of the star surface
by two isolated clouds (consisting of hydrogen and
helium), which are located almost oppositely near
the intersections of the magnetic And rotational
equator.
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