| discov_num | notes | refcode |
| HDS2947 | New observations of this object indicate that the orbit is eccentric, | |
| and that we observed the system near periastron (and below the | ||
| diffraction limit of the DCT). The orbital elements obtained confirm | ||
| that picture, yielding a total mass of 3.4 +/- 0.5 Msun. The composite | ||
| spectral type is F5 and the system has a magnitude difference of about | ||
| 1, so that we might suggest that the individual spectral types are F4 | ||
| and F9. If so, then the total mass would be on the order of 2.5 Msun, | ||
| which is about 2 sigma lower than the value implied by the current | ||
| orbital elements and the parallax of 13.96 +/- 0.55 mas. However, | ||
| because there is only one point near periastron at the moment, the | ||
| orbital elements will of course be modified with time. | Hor2015b |
| refcode | metd | author | reference |
| Hor2015b | S j | Horch, E.P., van Belle, G.T., Davidson, J.W., Jr., Ciastko, L.A., Everett, M.E., & | 2015AJ....150..151H |
| Hor2015b | Bjorkman, K.S. | ||
| Hor2015b | AJ 150, 151, 2015 | ||
| Tok2020g | orb - | Tokovinin, A. | 2020IAUDS.201....1A |
| Tok2020g | Inf. Circ. 201, 1, 2020 |
| idgroup | discov | author |
| 1 | HDS | Hipparcos Double Star (from additional DD list) |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20406+1539 | HDS2947 | 2006 | 18 | 107 | 0.2 | 7.27 | 8.14 | F5 | D | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2008 | 21 | 105 | 0.2 | 7.27 | 8.14 | F5 | D | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2014 | 20 | 107 | 0.0 | 7.27 | 8.14 | F5 | 204035.25+153835.3 | ||
| 20406+1539 | HDS2947 | 2015 | 21 | 41 | 0.0 | 7.27 | 8.14 | F5 | 204035.25+153835.3 | ||
| 20406+1539 | HDS2947 | 2017 | 23 | 122 | 0.1 | 7.27 | 8.14 | F5 | N | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2018 | 24 | 118 | 0.1 | 7.27 | 8.14 | F5 | N | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2019 | 25 | 114 | 0.2 | 7.27 | 8.14 | F5 | N | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2020 | 36 | 112 | 0.2 | 7.27 | 8.14 | F5 | N | 204035.25+153835.3 | |
| 20406+1539 | HDS2947 | 2021 | 38 | 111 | 0.2 | 7.27 | 8.14 | F5 | NO | 204035.25+153835.3 |