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Latest Details
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Name
  QV Tel  
AAVSO UID
000-BFN-545 (2 observations)  
Constellation
Telescopium Sequence
J2000.0
18 17 07.53 -56 01 24.1  (274.28138 -56.02336) Search nearby
B1950.0 18 12 54.86 -56 02 29.1
Proper motion
RA: -4.10 +/- 0.27 mas/yDec: -13.30 +/- 0.18 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 338.386 -17.695
Other names

(Internal only)
2MASS J18170753-5601240 ALS 15056 CD-56 7256
CPD-56 8706 EM* CDS 966 GSC 08748-02276
HD 167128 HIP 89605 HR 6819
IRAS 18129-5602 PPM 346742 SAO 245369
TYC 8748-2276-1    
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Variability type
BE
Spectral type Be+B3III+BH
Mag. range
5.32 - 5.39 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Hierarchical triple. A classical Be star is in a wide orbit with an unconstrained period around an inner 40.3 d. binary consisting of a B3III star and an unseen companion (a black hole) in a circular orbit.
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References
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1 Rivinius, T.; Baade, D.; Hadrava, P.; et al., 2020, A naked-eye triple
system with a nonaccreting black hole in the inner binary		 2020arXiv200502541R
2 European Space Agency, 1997, The Hipparcos and Tycho Catalogues, ESA
SP-1200		 1997yCat.1239....0E
External Links
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Location    Go   
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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 = 5.41H = 5.35K = 5.27J - K = 0.14
AllWISE W1 = 5.13W2 = 4.88W3 = 4.50W4 = 3.89W1 - W2 = 0.26W3 - W4 = 0.60
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 18 17 07.53 -56 01 24.1 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2020-05-07 22:29 UTC Range from Hipparcos data. Spectral type from 2020arXiv200502541R.
3 Admin, VSX 2010-01-05 04:43 UTC Update from the GCVS version of November 2009.
2 Admin, VSX 2007-03-23 19:53 UTC Added spectral type from [1997yCat.1239....0E].
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.

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