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Latest Details
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| Name |
NSV 20861 |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
16 52 46.30 -40 34 53.1 |
| Proper motion |
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| Galactic coord. |
344.617 +1.611 |
Other names
(Internal only)
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1RXS J165614.8-403951 |
ALS 3845 |
ASAS J165615-4039.6 |
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ASASSN-V J165615.04-403937.0 |
CD-40 10961 |
CPD-40 7630 |
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GSC 07872-00879 |
HD 152623 |
HIP 82876 |
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LS 3845 |
MCW 1268 |
NGC 6231 334 |
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PPM 322431 |
SAO 227464 |
TYC 7872-879-1 |
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| Variability type |
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EA |
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| Spectral type |
O7V((f)) |
| Mag. range |
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6.68 - 6.76 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
3.92306 d |
| Rise/eclipse dur. |
11% (10.4 h) |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
2002AcA....52..397P |
Eccentric system. Min II= 6.73 V. Apsidal motion. Period for Min I given. Min II period is 3.92330 d. It changed from orbital phase 0.44 in 1990 (Hipparcos) to 0.55 in 2009 (ASAS-3). Visual binary. A= 7.015; B= 8.294 Hp; sep. 0".23 (Perryman et al., 1997). In open cluster NGC 6231. |
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2 |
Otero, Sebastian Alberto
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Two companions detected at 238 mas and 1".5 (2014ApJS..215...15S). |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Sana, H.; et al., 2014, Southern Massive Stars at High Angular Resolution:
Observational Campaign and Companion Detection |
2014ApJS..215...15S |
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2 |
Pojmanski, G., 2002, The All Sky Automated Survey |
2002AcA....52..397P |
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3 |
Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues |
1997HIP...C......0E |
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4 |
F.Rufener, P.Bartholdi, AsAp Suppl 48, No.3, 503, 1982. |
1982A&AS...48..503R |
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External Links
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Location
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 6.34 | H = 6.34 | K = 6.30 | J - K = 0.04 |
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AllWISE
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W1 = 6.17 | W2 = 6.00 | W3 = 5.44 | W4 = 4.02 | W1 - W2 = 0.16 | W3 - W4 = 1.42 |
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APASS-DR9
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B = 7.00 | V = 6.82 | g' = 7.23 | r' = 6.81 | i' = 6.87 | B - V = 0.19 |
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Images
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Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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There are currently no supporting documents on file for this star.
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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