WDS 09278-0604 B 2530 (HD 81809) : NOTES
 
 
discov_num notes refcode
B 2530 There may have been a quadrant reversal about 1951. The 3-year
spectroscopic motion does not seem to relate to the visual pair.
Giant primary according to isochrone fit. Sod1999
Single line SB, P = 2.5 y, also a known visual binary. Primary is G2V,
so companion should likely be a cooler dwarf; this seems to be
confirmed from magnitude differences observed at 750, 550, and 450nm. Bag1984b
Pourbaix gives combined solution for this resolved SB2, yielding
orbital parallaxes and component masses. Pbx2000b
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 2.06 +/- 0.31, 2.44, and 1.00 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Bag1984b S j Balega, Y.Y., Bonneau, D., & Foy, R 1984A&AS...57...31B
Bag1984b A&AS 57, 31, 1984
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Pbx2000b orb - Pourbaix, D. 2000A&AS..145..215P
Pbx2000b A&AS 145, 215, 2000
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09278-0604 B 2530 1999 64 153 0.4 5.63 7.52 G2V NOD 092746.78-060416.4
09278-0604 B 2530 2009 65 327 0.3 5.63 7.52 G2V NOD 092746.78-060416.4
09278-0604 B 2530 2011 67 330 0.3 5.63 7.52 G2V NOD 092746.78-060416.4
09278-0604 B 2530 2013 68 334 0.3 5.63 7.52 G2V NOD 092746.78-060416.4
09278-0604 B 2530 2014 70 336 0.2 5.63 7.52 G2V NO 092746.78-060416.4
09278-0604 B 2530 2017 73 35 0.0 5.63 7.52 G2V NO 092746.78-060416.4
09278-0604 B 2530 2018 75 117 0.1 5.63 7.52 G2V NO 092746.78-060416.4
09278-0604 B 2530 2019 76 135 0.1 5.63 7.52 G2V NO 092746.78-060416.4
09278-0604 B 2530 2021 77 143 0.3 5.63 7.52 G2V NO 092746.78-060416.4

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