WDS 11210-5429 I 879 (Pi Cen) : NOTES
 
 
discov_num notes refcode
I 879 pi Cen.
The spectral lines are very poor; the RV range of 30km/s is probably
mere scatter. A few more speckle obs needed to constrain eccentricity.
1976.474: This system was observed within a few months of periastron. BLM1978
Hipparcos parallax 9.12 +/- 0.34 mas. Dynamical parallax 9.1 mas,
masses 6.43 and 3.68 Msun. The orbit by Mason et al. (1999) had to be Msn1999a
revised using our measures near the periastron. The high eccentricity
e = 0.853 is now well established. Tok2012b
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 15.29 +/- 3.02, 8.37, and 4.79 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Msn1999a Su j Mason, B.D., Douglass, G.G., & Hartkopf, W.I. 1999AJ....117.1023M
Msn1999a +orb AJ 117, 1023, 1999
Tok2012b S j Tokovinin, A. 2012AJ....144...56T
Tok2012b +orb AJ 144, 56, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11210-5429 I 879 2006 51 159 0.2 4.08 5.65 B5Vn NOD 112100.40-542927.7
11210-5429 I 879 2011 52 218 0.1 4.08 5.65 B5Vn NOD 112100.40-542927.7
11210-5429 I 879 2012 53 254 0.1 4.08 5.65 B5Vn NOD 112100.40-542927.7
11210-5429 I 879 2013 54 266 0.2 4.08 5.65 B5Vn NOD 112100.40-542927.7
11210-5429 I 879 2014 56 94 0.2 4.08 5.65 B5Vn NO 112100.40-542927.7
11210-5429 I 879 2015 57 100 0.2 4.08 5.65 B5Vn NO 112100.40-542927.7
11210-5429 I 879 2018 58 110 0.3 4.08 5.65 B5Vn NO 112100.40-542927.7
11210-5429 I 879 2019 59 113 0.3 4.08 5.65 B5Vn NO 112100.40-542927.7

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