WDS 18547+2239 BU 646 BC : NOTES
 
 
discov_num notes refcode
BU 646 113 Her. The G-type component is a long-period spectroscopic binary.
MKT 9 Visual orbit by Hummel et al. (1995) based on astrometry from Mark III MkT1995
interferometer. Additional spectroscopic data yield component masses,
luminosities, radii, effective temperatures, and distance.
Hipparcos astrometric solution adopted some elements from the orbit of HIP1997d
Hummel et al. (1995). MkT1995
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 1.71 +/- 3.27, 5.64, and 4.08 Msun, respectively. Mlk2012
Aa,Ab: Ren & Fu (2013) calculated an astrometric orbit, combining Ren2013
Hipparcos Intermediate Astrometric Data with spectroscopic elements by
Luyten (1936). Luy1936
 
 
REFERENCES
 
 
refcode metd author reference
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
Luy1936 - Luyten, W.J. 1936ApJ....84...85L
Luy1936 ApJ 84, 85, 1936
MkT1995 Km j Hummel, C.A., Armstrong, J.T., Buscher, D.F., Mozurkewich, D., Quirrenbach, A., & 1995AJ....110..376H
MkT1995 +orb Vivekanand, M.
MkT1995 AJ 110, 376, 1995
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Ren2013 orb - Ren, S. & Fu, Y. 2013AJ....145...81R
Ren2013 AJ 145, 81, 2013
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18547+2239 BU 646 BC 1999 5 317 8.7 11.10 11.10 N D 185446.35+223910.5
18547+2239 BU 646 BC 2001 6 317 8.8 11.10 11.10 N D 185446.35+223910.5
18547+2239 BU 646 BC 2013 7 316 9.4 11.10 11.10 N 185446.35+223910.5
18547+2239 BU 646 BC 2015 8 316 9.1 11.10 11.10 N 185446.35+223910.5

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