AAVSO Home



Current Time: 01 Apr 2025 23:12:37 UTC
Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  VY CMa  
AAVSO UID
000-BBM-990 (12509 observations)  
Constellation
Canis Major Sequence
J2000.0
07 22 58.33 -25 46 03.2  (110.74304 -25.76756) Search nearby
B1950.0 07 20 54.73 -25 40 12.1
Proper motion
RA: 5.72 +/- 2.01 mas/yDec: -6.75 +/- 4.47 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 239.353 -5.065
Other names

(Internal only)
AAVSO 0718-25 ADS 6033 A AN 60.1931
CD-25 4441 CPD-25 2286 HD 58061
HIP 35793 IRC -30087 RAFGL 1111
SAO 173591    
(Not logged in)  Add name
Variability type
LC
Spectral type M5eIbp(C6,3)
Mag. range
6.5 - 9.6 V
Discoverer Cuno Hoffmeister (1931)
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team ADS 6033 A (B 9.2m, 0.5", 168deg; C 11.5m, 2.7", 291deg, D 11m, 2.9", 347deg, ...). H2O, OH, SiO maser. B - V: +2.3. In the region of the young open cluster NGC 2362. Embedded in a reflecting nebula. The companions may be details of the nebula; some of them are probably variable [W.H.van den Boss, BAN 3, 263, 1927., G.Wallerstein, PASP 70, 479, 1958.]. Surrounded by an envelope of gas and dust or a disk of 0.45" (lambda = 5 mkm) angular size. Secular decrease of brightness since 1801. Cyclic variations of brightness with Delta(m) from several tenths of a magnitude to 3m on time scale from 200d to 1900d. TiO and ScO emission bands in the spectrum. Spectroscopic studies [G.Wallerstein, PASP 70, 479, 1958., M.W.Feast, Obs 90, 24, 1970., G.H.Herbig, Lick Contr N302, 1970.].
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 L.J.Robinson, IBVS N599, 1971. 1971IBVS..599....1R
2 Sky and Tel 40, 330, 1970. --
3 Hoffmeister, C., 1931, 316 neue Veränderlilche 1931AN....242..129H
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 = 2.82H = 1.58K = 0.29J - K = 2.53
APASS-DR9 B = 10.14V = 7.97B - V = 2.17
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 07 22 58.33 -25 46 03.2 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Campaigns/Programs
 Binocular program
 SNEWS Campaign
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Harrington, Scott N 2023-08-09 19:07 UTC Discoverer from 1931AN....242..129H.
3 Otero, Sebastian Alberto 2011-11-09 10:27 UTC Standard type added.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.