WDS 13513-2423 WSI 77 (HD 120690) : NOTES
 
 
discov_num notes refcode
WSI 77 The 10.3 yr SB1 orbit by Abt & Willmarth (2006) matches the speckle AbH2006
pair WSI 77 and explains the large dmu. Tok2012a
Astrometric binary. Hipparcos parallax 51.35 +/- 0.45 mas. Dynamical
parallax 50.3 mas, masses 0.99 and 0.63 Msun. WSI 77 is a
chromospherically active G5 dwarf within 20 pc from the Sun. According
to Abt & Willmarth (2006), it is also a single-lined spectroscopic AbH2006
binary with 10.3 yr period. We used RVs from that work and the average
RV from Nidever et al. (2002) together with four speckle points for Nid2002
the combined orbital solution presented. The spectroscopic elements
are K1 = 6.06 +/- 0.25 km/s and V0 = 5.38 +/- 0.10 km/s, the rms
residual in RV is 0.11 km/s. The node listed in Table 3 corresponds to
the primary component, therefore Omega was chosen to describe the
secondary’s relative motion. The pair was "caught" at close separation
in 2012. Tok2012b
Omega for Tokovinin et al. (2012) orbit flipped by 180deg, at request
of author. Tok2012b
 
 
REFERENCES
 
 
refcode metd author reference
AbH2006 orb - Abt, H.A., & Willmarth, D. 2006ApJS..162..207A
AbH2006 ApJS 162, 207, 2006
Nid2002 rv - Nidever, D.L., Marcy, G.W., Butler, R.P., Fischer, D.A., & Vogt, S.S. 2002ApJS..141..503N
Nid2002 ApJS 141, 503, 2002
Tok2012a A j Tokovinin, A., Hartnung, M., Hayward, T.L., & Makarov, V.V. 2012AJ....144....7T
Tok2012a AJ 144, 7, 2012
Tok2012b S j Tokovinin, A. 2012AJ....144...56T
Tok2012b +orb AJ 144, 56, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 WSI Douglass, G.G., Hindsley, R.B., & Worley, C.E.
10 WSI Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
10 WSI Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
13 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
13 WSI Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
14 WSI Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
14 WSI Hennessy, G.S., Platais, I., et al.
15 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
15 WSI Hennessy, G.S., Rafferty, T.J., et al.
42 WSI Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
42 WSI C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
52 WSI Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
52 WSI M., Kilian, C.M. & Warner, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13513-2423 WSI 77 2009 3 177 0.1 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2010 4 170 0.2 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2011 6 160 0.1 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2012 8 54 0.0 6.45 9.90 G5V O 135120.70-242323.2
13513-2423 WSI 77 2013 10 185 0.2 6.45 9.90 G5V O 135120.70-242323.2
13513-2423 WSI 77 2014 11 358 0.3 6.45 9.90 G5V NO 135120.70-242323.2
13513-2423 WSI 77 2015 12 175 0.3 6.45 9.90 G5V NO 135120.70-242323.2
13513-2423 WSI 77 2017 14 169 0.3 6.45 9.90 G5V NO 135120.32-242325.3
13513-2423 WSI 77 2018 16 163 0.2 6.45 9.90 G5V NO 135120.32-242325.3
13513-2423 WSI 77 2019 18 1 0.1 6.45 9.90 G5V NO 135120.32-242325.3
13513-2423 WSI 77 2020 20 352 0.2 6.45 9.90 G5V NO 135120.32-242325.3
13513-2423 WSI 77 2021 23 340 0.1 6.45 9.90 G5V NO 135120.32-242325.3

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