WDS 21369+4025 DRS 20 (74 Cyg) : NOTES
 
 
discov_num notes refcode
74 Cyg Hipparcos astrometric solution assumes circular orbit (e = omega = 0). HIP1997d
 
 
REFERENCES
 
 
refcode metd author reference
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
 
 
DISCOVERER
 
 
idgroup discov author
1 DRS De Rosa, R.J., Bulger, J., Patience, J., Leland, B., Macintosh, B., Schnieder, A.,
1 DRS Song, I., Marois, C. et al.
2 DRS De Rosa, R.J., Patience, J., Vigan, A., Wilson, P.A., Schnieder, A.,
2 DRS McConnell, N.J., Wiktorowicz, S.J., Marois, C., Song, I., Macintosh, B.,
2 DRS Graham, J.R., Bessell, M.S., Doyon, R., & Lai, O.
3 DRS De Rosa, R.J., Patience, J., Wilson, P. A., Schneider, A., Wiktorowicz, S. J.,
3 DRS Vigan, A., Marois, C., Song, I., Macintosh, B., Graham, J. R., et al.
6 DRS De Rosa, R.J., Patience, J., Ward-Duong, K., Vigan, A., Marois, C., Song, I.,
6 DRS Macintosh, B., Graham, J.R., Doyon, R., Bessell, M.S., et al.
7 DRS De Rosa, R.J., Nielsen, E.L., Rameau, J., Duchene, G., Greenbaum, A.Z., Wang, J.J.,
7 DRS Ammons, S.M., Bailey, V.P., Barman, T., Bulger, J., Chilcote, J., Cotten, T.,
7 DRS Doyon, R., Esposito, T.M., Fitzgerald, M.P., Follette, K.B., Gerard, B.L.,
7 DRS Goodsell, S.J., Graham, J.R., Hibon, P., Horn, J., Hung, L.-W., Ingraham, P.,
7 DRS Kalas, P., Konopacky, Q., Larkin, J.E., Macintosh, B., Maire, J., Marchis, F.,
7 DRS Marley, M.S., Marois, C., Metchev, S., Millar-Blanchaer, M.A., Oppenheimer, R.,
7 DRS Palmer, D., Patience, J., Perrin, M., Poyneer, L., Pueyo, L., Rajan, A., Rantakyro,
7 DRS F.T., Ren, B., Ruffio, J.-B., Savransky, D., Schneider, A.C., Sivaramakrishnan, A.,
7 DRS Song, I., Soummer, R., Tallis, M., Thomas, S., Wallace, J.K., Ward-Duong, K.,
7 DRS Wiktorowicz, S. & Wolff, S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21369+4025 DRS 20 2008 1 58 7.0 4.51 13.30 A5V N DK 213656.98+402448.6

If you need more information about this double, apply for a data request form to the WDS.