WDS 20312+5653 RAO 22 (HD 195872) : NOTES
 
 
discov_num notes refcode
RAO 22 Acceleration binary (Makarov & Kaplan 2005) first resolved by Riddle Mkr2005
et al. (2015). The position angle in this paper measured on 2013.8367 RAO2015
differs by 27° from the 2012.7592 measurement. That is not the only
discrepancy between the two data sets. The photometry with P3K shows
large magnitude differences (dJ = 2.5 and dK = 2.3), while Robo-AO
detected a binary of equal brightness. The separation between the two
components is fairly small and in the P3K data, the companion lies on
the Airy ring of the primary, which could increase the errors. The
primary is a high PM star, the pair AB is most likely a physical
binary. Additional observations are needed to understand this system. Rbr2015d
 
 
REFERENCES
 
 
refcode metd author reference
Mkr2005 - Makarov, V.V. & Kaplan, G.H. 2005AJ....129.2420M
Mkr2005 AJ 129, 2420, 2005
RAO2015 Ag u Riddle, R.L., Tokovinin, A., Mason, B.D., Hartkopf, W.I., Roberts, L.C., Jr., 2015ApJ...799....4R
RAO2015 +orb Baranec, C., Law, N.M., Bui, K., Burse, M.P., Das, H.K., Dekany, R.G.,
RAO2015 Kulkarni, S., Punnadi, S., Ramaprakash, A.N., & Tendulkar, S.P.
RAO2015 ApJ 799, 4, 2015
RAO2015 (Note: Paper includes separation/magnitude difference limits for all stars
RAO2015 observed. These limits have been added to the Interferometric Catalog even for
RAO2015 resolved pairs, to indicate restrictions on any potential additional components.)
Rbr2015d Ac j Roberts, L.C., Jr., Tokovinin, A., Mason, B.D., Hartkopf, W.I., & Riddle, R.L. 2015AJ....150..130R
Rbr2015d +A AJ 150, 130, 2015
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20312+5653 RAO 22 2012 1 196 0.2 8.70 8.80 F8 203112.36+565324.2
20312+5653 RAO 22 2013 2 164 0.2 8.03 8.00 F8 203112.35+565324.1
20312+5653 RAO 22 2015 3 152 0.2 8.03 8.00 F8 N 203112.35+565324.1

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