WDS 05386+3030 BU 1240 AB : NOTES
 
 
discov_num notes refcode
BU 1240 26 Aur. Composite spectrum; B9.5V+F9III. Light variability suspected.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Only elements P and T have been amended by Starikova (1977) from the Sta1977a
orbit of Baize (1956). Baz1956
Romero (2008) estimates masses of the A and B components as 2.1 +/- FMR2008
1.0 and 3.0 +/- 0.4 Msun, respectively; spectral types are G8III and
A1IV or B9.5V.
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 6.87 +/- 22.98, 5.45, and 4.82 Msun, respectively. Mlk2012
STF 753 Romero (2008) analyzes the optical/physical nature of the C component; FMR2008
the spectral is determined to be about A6V and it appears to be
gravitationally bound to the AB pair, with an estimated orbital period
of ~46,000 years.
AB,C: H 3 64. MEv2010
BU 90 Romero (2008) derives a proper motion for D (+0.4 +/- 2.1 mas/yr in FMR2008
RA, -12.6 +/- 1.6 mas/yr in Dec) based on that of the AB pair plus the
relative motion of AB,D between the years 1856 and 2002. He also
concludes that D is optical, with a spectral type estimated at K1III
and distance of ~870pc (both determinations corrected for reddening).
 
 
REFERENCES
 
 
refcode metd author reference
Baz1956 orb - Baize, P. 1956JO.....39...82B
Baz1956 J. Obs. 39, 82-91, 1956
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
FMR2008 orb - Rica Romero, F.M. 2008RMxAA..44..137R
FMR2008 RevMexA&A 44, 137, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sta1977a orb - Starikova, G.A. 1977ATsir.961....7S
Sta1977a Astron. Tsirk. #961, 7, 1977
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
05386+3030 BU 1240 AB 2005 95 334 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2008 98 329 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2009 100 323 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2010 101 327 0.2 6.29 6.21 G8III A1 NOD 053838.10+302932.8
05386+3030 BU 1240 AB 2012 102 324 0.2 6.29 6.21 G8III+A1 NO 053838.10+302932.8

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