WDS 21028+4551 BU 1138 CE : NOTES
 
 
discov_num notes refcode
BU 1138 Called a spectroscopic binary in BSC. This may be due to motion in the
close visual pair.
AB: Additional notes may be found in Muller (1955). Mlr1955c
AC: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
KUI 104 CD: C is at 21 02.6 +45 53. CE is optical.
BU 1138 AB: Rectilinear solution by Friedman et al. (2011). USN2011b
CE: Rectilinear solution by Friedman et al. (2011). USN2011a
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
Mlr1955c Mc - Muller, P. 1955JO.....38..221M
Mlr1955c J. Obs. 38, 221, 1955
USN2011a lin - Friedman, E.A., Mason, B.D., & Hartkopf, W.I. 2011IAUDS.175....1F
USN2011a Inf. Circ. 175, 1, 2011
USN2011b lin - Friedman, E.A., Hartkopf, W.I., & Mason, B.D. ...................
USN2011b private communication, 2011
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 FYM Fay, M.
206 HLA Hirsch, L.A., Ciardi, D.R., Howards, A.W., Marcy, G.W., Ruane, G., Gonzalez, E.,
206 HLA Blunt, S., Crepp, J.R., Fulton, B.J., Isaacson, H., Kosiarek, M., Mawet, D.,
206 HLA Sinukoff, E. & Weiss, L.
207 HLA Hirsch, L.A., Rosenthal, L., Fulton, B.J., Howard, A.W., Ciardi, D.R., Marcy, G.W.,
207 HLA Nielsen, E., Petigura, E.A., de Rosa, R.J., Isaacson, H., Weiss, L.M., Sinukoff, E.
209 KUI Kuiper, G.P., Schilt, van den Bos, W., and van Gent
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21028+4551 BU 1138 CE 1962 6 250 5.6 7.82 13.00 N 210240.75+455305.1
21028+4551 BU 1138 CE 2003 9 249 23.6 7.82 12.38 K2 NL 210240.75+455305.1

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