WDS 20591+0418 STF 2737 BC : NOTES
 
 
discov_num notes refcode
STF2737 eps Equ = 1 Equ. Primary is 2.03d SB1. Tok2006
AC: Star C (mag. 7.3, dF4) is in slow retrograde motion at 10".
Period of AC estimated at 5200y. Tok2006
AB,C: Hyperbolic orbit by Zeller (1965). Ephemeris covers 1831-2042. Zel1965
sigma = areal constant in the true orbit = 0.1952 arcsec^2/yr
q = periastron distance in the true orbit = 10".78
AB,C: HJL 288. HJL1986
BC: H 3 21. MEv2010
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 4.17 +/- 2.42, 2.73, and 1.33 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
HJL1986 Pa - Halbwachs, J.L. 1986A&AS...66..131H
HJL1986 A&AS 66, 131, 1986
HJL1986 (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986 only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
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
Tok2006 A j Tokovinin, A., Thomas, S., Sterzik, M., & Udry, S. 2006A&A...450..681T
Tok2006 +E2 A&A 450, 681, 2006
Zel1965 orb - Zeller, G. 1965AnWie..26..111Z
Zel1965 Ann. Sternw. Wien 26, 111, 1965
 
 
DISCOVERER
 
 
idgroup discov author
1 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
20591+0418 STF2737 BC 2006 12 67 10.5 6.31 7.05 N D 205904.46+041736.6
20591+0418 STF2737 BC 2011 13 67 10.5 6.31 7.05 N D 205904.46+041736.6
20591+0418 STF2737 BC 2012 15 67 10.5 6.31 7.05 N D 205904.46+041736.6
20591+0418 STF2737 BC 2014 18 67 10.5 6.31 7.05 F6IV NV 205904.46+041736.6
20591+0418 STF2737 BC 2019 19 66 10.6 6.31 7.05 F6IV NV 205904.46+041736.6

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