| discov_num | notes | refcode |
| STFA 55 | B is BD+36@4537. | |
| Toyota et al. (2009) monitored the RV of the A component every 1-2 | ||
| months between 2003 Mar - 2007 Nov, using a high-dispersion echelle | ||
| (precision ~10 m/s). The star shows a large RV variation; a Keplerian | ||
| fit gives a period of 863.8d and an eccentricity of 0.20, which may be | ||
| induced by a companion of mass ~8.1 Mjup, by stellar rotation or by | ||
| non-radial pulsation. | Toy2009 |
| refcode | metd | author | reference |
| Toy2009 | rv - | Toyota, E., Itoh, Y., Ishiguma, S., Urakawa, S., Murata, D., Oasa, Y., | 2008PASJ...61...19T |
| Toy2009 | Matsuyama, H., Funayama, H., Sato, B., & Mukai, T. | ||
| Toy2009 | PASJ 61, 19, 2009 |
| idgroup | discov | author |
| 1 | STF | Struve, F.G.W. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21238+3721 | STFA 55 | AC | 1998 | 6 | 154 | 178.2 | 6.61 | 11.08 | K5 | N D | 212348.39+372105.4 |
| 21238+3721 | STFA 55 | AC | 2002 | 7 | 154 | 177.8 | 6.61 | 11.08 | K5 | N D | 212348.39+372105.4 |
| 21238+3721 | STFA 55 | AC | 2015 | 8 | 154 | 178.3 | 6.61 | 11.08 | K5 | N | 212348.39+372105.4 |