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Latest Details
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Name
  WR 142b  
AAVSO UID
000-BKG-210 (2384 observations)  
Constellation
Cygnus Sequence
J2000.0
20 28 14.56 +43 39 25.5  (307.06065 +43.65708) Search nearby
B1950.0 20 26 31.67 +43 29 24.9
Proper motion
RA: 7.5 +/- 5.0 mas/yDec: -9.1 +/- 4.8 mas/ySource: UCAC4
Galactic coord. 81.575 +2.913
Other names

(Internal only)
ASASSN-V J202814.56+433926.4 MSX6C G081.5744+02.9135 USNO-B1.0 1336-0379707
ZTF J202814.55+433925.4    
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Variability type
WR
Spectral type WN6
Mag. range
15.742 (0.44) g
Discoverer --
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 2020arXiv200508662C Long 0.4 mag. outburst recorded.
2 Littlefield, Colin Because this star is heavily reddened, the discovery paper uses a very red reference star (USNO-B1.0 1336-0379763) and adopts its USNO-B1.0 infrared magnitude of 11.23. Although the use of this reference star eliminated spurious variations caused by using much bluer reference stars, it is likely that the reference star's true magnitude in the Cousins-I bandpass is somewhat different than the USNO-B1.0 magnitude.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 ZTF Catalog of Periodic Variable Stars (online data) 2020arXiv200508662C
2 Chen, X.; et al., 2020, The Zwicky Transient Facility Catalog of Periodic
Variable Stars		 2020arXiv200508662C
3 Littlefield et al., 2012, Discovery of a Wolf-Rayet Star through Detection
of Its Photometric Variability		 2012AJ....143..136L
4 C. Littlefield et al., 2011, arXiv:1111.3367v1 [astro-ph.SR] 2011arXiv1111.3367L
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 = 8.77H = 7.86K = 7.19J - K = 1.58
AllWISE W1 = 6.44W2 = 5.94W3 = 5.26W4 = 4.25W1 - W2 = 0.51W3 - W4 = 1.01
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 20 28 14.56 +43 39 25.5 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2021-10-26 08:16 UTC Update from 2020arXiv200508662C. Amplitude from ZTF light curve. Gaia EDR3 position.
2 Littlefield, Colin 2012-07-06 01:34 UTC Provided an updated reference and clarified the bandpass used in the discovery paper.
1 Admin, VSX 2011-11-17 02:25 UTC Preserved original object data.

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