02211+4246 STF 248
02h 21m 03.67s +42° 46' 27.1" P.A. 203.00 sep 0.7 mag 9.55,9.83 Sp K0 dist. 55.62 pc (181.43 l.y.)
| Coord 2000 | 02211+4246 | Discov num | STF 248 | Comp | Coord arcsec 2000 | 02 21 03.67 +42 46 27.1 | |||||
| Date first | 1830 | Date last | 2017 | Obs | 86 | ||||||
| Pa first | 164 | Pa last | 202.7 | P.A. Now (θ) | 198.4° | ||||||
| Sep first | 1.7 | Sep last | 0.71 | Sep. Now (ρ) | 0.793" | ||||||
| Mag pri | 9.55 | Mag sec | 9.83 | delta mag (ΔM) | 0.28 | Spectral class | K0 (yellow-orange) | ||||
| Pri motion ra | +025 | Sec motion ra | |||||||||
| Pri motion dec | -205 | Sec motion dec | |||||||||
| Notes | N O (See Notes, Orbital solution) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Andromeda | HIP | 10952 | Tycho2 | 2839-01453-1 | Gaia DR2 | 339384295642198272 | ||||
| ADS | 1786 | BD | BD+42 501 | Distance | 55.62 | Distance ly | 181.43 |
ORBITAL ELEMENTS
| Period (P) | 318y | ± 17 | Periastron (T) | 1989.2y | ± 0.14 | Semi-major axis (a) | 0.94a | ± 0.022 |
| Eccentricity (e) | 0.802 | ± 0.0072 | Inclination (i) | 147° | ± 2.3 | Longitude of periastron (ω) | 175° | ± 3.7 |
| Node (Ω) | 158° | ± 3.5 | Notes | n | Reference | Pbx2000b | ||
| Equinox | Last observation | Grade | 3 | (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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