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Name
  HD 97950  
AAVSO UID
000-BCZ-953 (202 observations)  
Constellation
Carina Sequence
J2000.0
11 15 07.34 -61 15 38.5  (168.78058 -61.26069) Search nearby
B1950.0 11 12 57.75 -60 59 16.2
Proper motion
RA: 0.5 +/- 1.4 mas/yDec: -3.1 +/- 4.0 mas/ySource: UCAC4
Galactic coord. 291.618 -0.523
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO_DES 1110-60 ALS 2275 ASAS J111510-6115.6
CPD-60 2732A GSC 08959-01959 HD 97950 A
HIP 54948 HST 43 LS 2275
NGC 3603 70 NGC 3603 A1 NGC 3603 YC
TYC 8959-1959-1    
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Variability type
EA
Spectral type WN6ha+O3V
Mag. range
11.12 (0.45:) V
Discoverer --
Epoch
06 Mar 1997 (HJD 2450513.52) Ephemeris
Outburst --
Period 3.77265 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Close multiple with 4 main components. A is actually 3 stars. The eclipsing binary is A1 which is 0.37" from A2, 0.354" from A3 and 0.78" from B.
2 Otero, Sebastian Alberto Brightest component of the core of the open cluster NGC 3603 (HD 97950). Extremely massive system.
3 VSX Admin CPD-60 2732; HIP 54948
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References
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1 M. Kiraga, 2012, Acta Astronomica 62, 67 2012AcA....62...67K
2 The Astronomical Journal, Volume 128, Issue 6, pp. 2854-2861 2004AJ....128.2854M
External Links
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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 = 6.70H = 6.26K = 5.91J - K = 0.79
AllWISE W1 = 3.50W2 = 2.71W1 - W2 = 0.79
APASS-DR9 B = 10.20
Images
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Supporting Documents
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1 NGC 3603 A1 light curve Otero, Sebastian Alberto 2010-07-30 06:16 UTC Light curve of NGC 3603 A1 using corrected ASAS-3 V data.
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Revision History
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3 Otero, Sebastian Alberto 2014-10-01 22:51 UTC Primary record creation. Cross-identifications and remark added.
2 Otero, Sebastian Alberto 2010-07-30 06:16 UTC UCAC3 position.
V= 11.12 from Sung, 2004 (2004AJ....127.1014S) adopted as maximum magnitude. Period refined using ASAS-3 data and Epoch in reference.
ASAS mag. corrected from light contamination from nearby stars.
1 Admin, VSX 2009-10-23 00:50 UTC Preserved original object data.

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