15521+1052 BAG 7
15h 52m 08.24s +10° 52' 28.0" P.A. 57.00 sep 0.1 mag 9.70,11.16 Sp K5V dist. 22.47 pc (73.3 l.y.)
| Coord 2000 | 15521+1052 | Discov num | BAG 7 | Comp | Coord arcsec 2000 | 15 52 08.24 +10 52 28.0 | |||||
| Date first | 1990 | Date last | 2021 | Obs | 33 | ||||||
| Pa first | 16 | Pa last | 57.3 | P.A. Now (θ) | 57.3° | ||||||
| Sep first | 0.1 | Sep last | 0.108 | Sep. Now (ρ) | 0.108" | ||||||
| Mag pri | 9.70 | Mag sec | 11.16 | delta mag (ΔM) | 1.46 | Spectral class | K5V (yellow-orange) | ||||
| Pri motion ra | -262 | Sec motion ra | |||||||||
| Pri motion dec | -237 | Sec motion dec | |||||||||
| Notes | N O (See Notes, Orbital solution) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Serpens | HIP | 77725 | Tycho2 | 0947-00387-1 | GL | Gl 600 | ||||
| BD | BD+11 2874 | Distance | 22.47 | Distance ly | 73.3 |
ORBITAL ELEMENTS
| Period (P) | 2.778y | Periastron (T) | 2014.684y | Semi-major axis (a) | 0.101a | |||
| Eccentricity (e) | 0.349 | Inclination (i) | 34.6° | Longitude of periastron (ω) | 328.6° | |||
| Node (Ω) | 298.4° | Notes | n | Reference | Doc2019c | |||
| Equinox | 2000 | Last observation | 2015 | Grade | 1 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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 Measures: green=micrometric, blue=interferometric, purple=photographic |
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