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Latest Details
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Name
  HD 5980  
AAVSO UID
000-BCY-677 (7168 observations)  
Constellation
Tucana Sequence
J2000.0
00 59 26.58 -72 09 53.9  (14.86075 -72.16497) Search nearby
B1950.0 00 57 45.83 -72 26 03.6
Proper motion
RA: -1.6 +/- 1.2 mas/yDec: 0.3 +/- 1.9 mas/ySource: UCAC4
Galactic coord. 302.066 -44.950
Other names

(Internal only)
AAVSO_DES 0056-72 ASAS J005927-7209.9 ASASSN-V J005926.47-720954.2
AzV 229 LHA 115-S 28 RMC 14
SMC AB 5 SMC V1484 Sk 78
TYC 9138-1929-1 UCAC4 090-005917  
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Variability type
EA/GS/WR+HB+EW:+SDOR
Spectral type WN4+WN-O7I-B1.5Ia+
Mag. range
8.8 - 11.9 V
Discoverer --
Epoch
25 Aug 2005 (HJD 2453607.711) Ephemeris
Outburst --
Period 19.2656 d
Rise/eclipse dur. 13%  (2.50 d)
Remarks
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1 Otero, Sebastian Alberto Quadriple system. AB is the 19. d. eclipsing binary. A is the SDOR outbursting object. C is a late O-type supergiant which is itself a binary in a highly eccentric (e = 0.82) 96.6 d. orbit. The EW: variability has P= 0.505054 d. Light curve is assymetric so it might not be eclipsing [VSX Team].
2 Otero, Sebastian Alberto Eccentric system, Min II at phase 0.64.
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References
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1 G. Schrader, 2012, HD 5980 a boring name for a star system that is anything
but boring		 VSS Newsletter 2012-4 (December 2012)
2 Kołaczek-Szymański, P. A.; et al., 2021, Massive heartbeat stars
from TESS. I. TESS sectors 1-16		 2021A&A...647A..12K
3 Smith, N. et al, 2011, Luminous blue variable eruptions and related
transients: diversity of progenitors and outburst properties		 2011MNRAS.415..773S
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 = 11.11H = 11.01K = 10.77J - K = 0.34
AllWISE W1 = 11.03W2 = 10.76W3 = 9.74W4 = 5.37W1 - W2 = 0.27W3 - W4 = 4.37
APASS-DR9 B = 11.38V = 11.54g' = 11.34r' = 11.73i' = 11.94B - V = -0.16
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 00 59 26.58 -72 09 53.9 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 Individual campaigns
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
6 Otero, Sebastian Alberto 2024-05-01 17:30 UTC Type corrected.
5 Otero, Sebastian Alberto 2023-06-19 19:55 UTC Type and periods from 2021A&A...647A..12K. Gaia DR3 position.
4 Otero, Sebastian Alberto 2015-08-21 06:25 UTC Elements and eclipse duration from VSS Newsletter 2012-4.
3 Otero, Sebastian Alberto 2012-07-07 22:06 UTC Type and maximum magnitude from 2011MNRAS.415..773S. Minimum magnitude from the GCPD.
2 Admin, VSX 2012-05-05 02:23 UTC Update from GCVS Extragalactic Variable Stars Catalogue.
1 Admin, VSX 2009-10-23 00:55 UTC Initial upload.

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