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Latest Details
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| Name |
W Hya |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
13 46 12.22 -28 07 06.7 |
| Proper motion |
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| Galactic coord. |
318.022 +32.811 |
Other names
(Internal only)
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| Variability type |
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M |
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| Spectral type |
M7e-M9ep |
| Mag. range |
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5.6 - 9.6 V |
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| Discoverer |
Edwin Sawyer (1889) |
| Epoch |
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| Outburst |
-- |
| Period |
402 d |
| Rise/eclipse dur. |
50% (201 d) |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Otero, Sebastian Alberto
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2 mag. mean mag. changes on a time scale of 8000 days. |
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2 |
GCVS Team |
VB A (B 9.3m, 72", 108deg). P var. Max = 2411074 + 379d*E (JD2411000 - 14150); Max = 2414644 + 395d*E (JD2414150 - 19400); Max = 2419746 + 378d*E (JD2419400 - 25200) [R.Prager, GuL 2, 1936.]. Max = 2425740 + 366d*E (JD2425200 - 27000); Max = 2440336 + 397.35d*E (JD2428000 - 40500); since JD2440500 - see Table. Amplitude and shape of the light curve vary strongly. OH, H2O, SiO maser. |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Drake, A. J.; et al., 2017, The Catalina Surveys Southern Periodic Variable
Catalog |
2017MNRAS.469.3688D |
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2 |
G.Pojmanski, Acta Astronomica 52, 397, 2002. |
2002AcA....52..397P |
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3 |
Cannon, A. J., 1907, Second catalogue of variable stars |
1907AnHar..55....1C |
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General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al. |
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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Images
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Supporting Documents
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Revision History
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