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Detail Sheet
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
U Lac |
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| AAVSO UID |
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| Const. |
Lacerta |
| J2000.0 |
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| B1950.0 |
22 45 39.48 +54 53 37.8 |
Other names
(Internal only)
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AAVSO 2243+54 |
AN 2.1902 |
BD+54 2863 |
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HD 215924 |
HIP 112545 |
IRC +50446 |
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RAFGL 2957 |
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| Var. type |
SRC |
| Spec. type |
M4epIab+B |
| Mag. range |
9.4 - 12.1 p
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| Discoverer |
-- |
| Original ref. |
S.Gaposchkin, HA 118, N26, 1952. |
| Chart ref. |
N.F.Florja, Tr. Gos. Astron. Inst. Sternberg 16, 187, 1949. |
| Epoch |
-- |
| Outburst |
-- |
| Period |
-- |
| Rise dur. |
-- |
Remarks
(Original)
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There are light variations with the periods: 150d, 550 - 690d, 2900d. |
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Additional Remarks
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Remarks shown in this section may supercede original remarks shown above.
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1 |
Huziak, Richard
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2009-11-19 19:13 UTC |
The "Original Reference" (S.Gaposchkin, HA 118, N26, 1952) for U Lac cited in VSX (and thus in the GCVS) is incorrect for U Lac, and no reference to U Lac is seen in that publication. T. W. Backhouse states in "Astronomische Nachrichten" (1902AN....158..383K) that the star AN 2.1902 (now U Lac) was announced in "The Observatory for Jul 1897 p.278" and was discovered by him as variable, and that the star was first listed in Espin's revision of "Birmingham's Catalogue of Red Stars" as #735. |
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Location
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Images
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Supporting Documents
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Additional References
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Revision History
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Currently approved revision is checked. All other subsequent revisions are not yet approved.
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2 |
Admin, VSX
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2010-01-04 23:43 UTC |
Position updated from the GCVS version of November 2009. |
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1 |
Admin, VSX
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2005-12-17 20:33 UTC |
Initial upload. |
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