WDS 21221+1948 STFB 11 AB (1 Peg) : NOTES
 
 
discov_num notes refcode
STFB 11 1 Peg. STTA218. B is a spectroscopic binary, P = 1111d, and is
BD+19@4690. Spectrum K0V.
Mk III Limb-darkened diameter 4.7 +/- 0.4 mas. MkT1989
NPOI Limb-darkened diameter 2.315 +/- 0.023 mas, Sp = K1III, NOI2018
R = 11.89 +/- 0.15 \rsun, Teff = 4725 +/- 64 K, L = 63.5 +/- 3.3 \lsun,
M = 1.60 +/- 0.18 \msun, Age = 2.04 +/- 0.54 Gyr.
AB: H 5 20. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
MkT1989 not j Hutter, D.J., Johnston, K.J., Mozurkewich, D., Simon, R.S., Colavita, M.M., Pan, 1989ApJ...340.1103H
MkT1989 X.P., Shao, M., Hines, B.E., Staelin, D.H., Hershey, J.L., Hughes, J.A. & Kaplan, .
MkT1989 G.H. .
MkT1989 ApJ 340, 1103, 1989 .
NOI2018 not j Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter, 2018AJ....155...30B
NOI2018 D.J., Tycner, C. & van Belle, G.T.
NOI2018 AJ 155, 30, 2018
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
34 TOK Tokovinin, A.A.
81 TOK Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., &
81 TOK Weigelt, G.
95 TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
95 TOK Martinez, M., & Mondaca, E.
163 TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
163 TOK Ratzloff, J. & Walter, F.M.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21221+1948 STFB 11 AB 2006 65 311 36.8 4.20 7.56 K0.5III N D 212205.13+194815.7
21221+1948 STFB 11 AB 2009 69 308 40.3 4.20 7.56 K0.5III N D 212205.13+194815.7
21221+1948 STFB 11 AB 2011 70 310 36.3 4.20 7.56 K0.5III N D 212205.13+194815.7
21221+1948 STFB 11 AB 2012 73 326 48.4 4.20 7.56 K0.5III N D 212205.13+194815.7
21221+1948 STFB 11 AB 2013 75 311 36.6 4.20 9.30 K0.5III N D 212205.13+194815.7
21221+1948 STFB 11 AB 2017 80 311 35.8 4.20 9.30 K0.5III NO 212205.13+194815.7
21221+1948 STFB 11 AB 2019 84 312 36.3 4.20 9.30 K0.5III NO 212205.13+194815.7
21221+1948 STFB 11 AB 2020 85 313 36.6 4.20 9.30 K0.5III NO 212205.13+194815.7

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