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Name
  Y Hya  
AAVSO UID
000-BBQ-892 (4433 observations)  
Constellation
Hydra Sequence
J2000.0
09 51 03.72 -23 01 02.4  (147.76550 -23.01733) Search nearby
B1950.0 09 48 45.13 -22 46 57.0
Proper motion
RA: 10.206 +/- 0.029 mas/yDec: -6.023 +/- 0.032 mas/ySource: Gaia DR1
Galactic coord. 257.595 +23.576
Other names

(Internal only)
AAVSO 0946-22 BD-22 2739 CD-22 7652
CPD-22 4510 HD 85405 HIP 48327
HV 72 IRC -20199 SAO 178088
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Variability type
SRB
Spectral type C5,4(N3p)
Mag. range
6.2 - 7.4 V
Discoverer --
Epoch
04 Jun 2008 (HJD 2454622.0) Ephemeris
Outburst --
Period 154.4 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Sometimes irregular.
2 GCVS Team Mean magnitude varies.
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References
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1 S.Gaposchkin, HA 115, N17, 1950. 1952AnHar.115..197G
2 F.M.Bateson, M.Morel, B.Summer, R.Winnett, Charts for Southern Va- riables,
ser.N13, 1981.
--
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 = 2.25H = 1.12K = 0.52J - K = 1.73
AllWISE W3 = -0.40W4 = -0.87W3 - W4 = 0.47
Images
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Supporting Documents
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2 Historical light curve Otero, Sebastian Alberto 2011-05-10 07:05 UTC Light curve showing all V-data from the literature and AAVSO visual observations shifted to the V-mag. scale.
1 Phase plot Otero, Sebastian Alberto 2011-05-10 07:00 UTC Light curve with all V-data from the literature.
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Campaigns/Programs
 Binocular program
Revision History
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3 Otero, Sebastian Alberto 2011-05-10 07:00 UTC Period, epoch and range from the V-data available in the literature and AAVSO visual observations.
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.