AAVSO Home



Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  W Hya  
AAVSO UID
000-BBT-975 (4813 observations)  
Constellation
Hydra Sequence
J2000.0
13 49 02.00 -28 22 03.5  (207.25833 -28.36764) Search nearby
B1950.0 13 46 12.22 -28 07 06.7
Proper motion
RA: -49.31 +/- 1.48 mas/yDec: -59.71 +/- 1.04 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 318.022 +32.811
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1343-27 ASAS J134902-2822.1 CD-27 9429
CPD-27 4792 HD 120285 HIP 67419
IRC -30207 PPM 262109 RAFGL 1650
SAO 181981 TYC 6728-19-1  
(Not logged in)  Add name
Variability type
M
Spectral type M7e-M9ep
Mag. range
5.6 - 9.6 V
Discoverer --
Epoch
30 Dec 2007 (HJD 2454465) Ephemeris
Outburst --
Period 390 d
Rise/eclipse dur. 50%
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto 2 mag. mean mag. changes on a time scale of 8000 days.
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.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
2 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
Links open in a new window. Not all links may be valid for this particular target.
Location    Go   
Select a Location for more details.
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 = -1.74H = -2.69K = -3.21J - K = 1.48
AllWISE W4 = -3.62
GALEX-DR5 NUV = 16.64
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2012-05-04 20:53 UTC Type, period and epoch from ASAS-3 data. Range from AAVSO data.
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.