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Name
  V0348 Sgr  
AAVSO UID
000-BCC-948 (17553 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 40 19.93 -22 54 29.3  (280.08304 -22.90814) Search nearby
B1950.0 18 37 18.34 -22 57 18.3
Galactic coord. 11.197 -7.920
Other names

(Internal only)
2MASS J18401992-2254292 AN 21.1929 ASAS J184020-2254.5
HV 3976 IRAS 18372-2257 SVS 206
WISE J184020.00-225428.0 [BDF99] SB17  
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Variability type
RCB
Spectral type pec(HDCe)/WC10:
Mag. range
11.2 - 19.0: V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Hot RCB.
2 GCVS Team VB A (B 15m pg, 16", 73deg). Very hot hydrogen deficient helium carbon star. By the character of light variation and the spectrum the star is unique. The light curve resembling those of RCB type stars is superimposed by conspicuons irregular and semiregular variations with the mean cycle about 200d [D.Hoffleit, AJ 63, 78, 1958., F.M.Bateson, A.W.Dodson, NZAS Publ N10(C 82), 1, 1982.]. The star is surrounded by a nebula the radius of which equals 1". A fainter nebulous envelope is observed up to 7" from the star. Large infrared excess. Spectrum description [G.H.Herbig, ApJ 127, N2, 312, 1958., O.Dahari, D.E.Osterbrock, ApJ 277, 648, 1984.]. Probably the star is intermediate between the RCB variables And planetary nebula Wolf-Rayet central stars.
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References
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1 Clayton, G. C., 2012, What are the R Coronae Borealis Stars? arXiv:1206.3448v1
2 O.Dahari, D.E.Osterbrock, ApJ 277, 648, 1984. 1984ApJ...277..648D
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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 = 10.41H = 8.94K = 7.34J - K = 3.07
AllWISE W1 = 5.26W2 = 3.63W3 = 2.09W4 = 1.32W1 - W2 = 1.64W3 - W4 = 0.77
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2014-07-03 19:05 UTC Minimum magnitude from AAVSO V data.
3 Otero, Sebastian Alberto 2012-06-18 05:26 UTC Type from Clayton (2012). 2MASS position.
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.