Coord 2000 | 03124-4425 | Discov num | JC 8 | Comp | AB | Coord arcsec 2000 | 03 12 25.68 -44 25 10.8 | ||||
Date first | 1895 | Date last | 2021 | Obs | 125 | ||||||
Pa first | 190 | Pa last | 90 | P.A. Now (θ) | 276.9° | ||||||
Sep first | 0.5 | Sep last | 0.096 | Sep. Now (ρ) | 0.064" | ||||||
Mag pri | 6.42 | Mag sec | 7.36 | delta mag (ΔM) | 0.94 | Spectral class | F7III+A0V (yellow-white/white) | ||||
Pri motion ra | +092 | Sec motion ra | +092 | ||||||||
Pri motion dec | -006 | Sec motion dec | -006 | ||||||||
Notes | N O (See Notes, Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 216209 | 03 12 26 -44 25 11 | JC 8 AB | 2021 | 125 | 90 | 0.1 | 6.42 | 7.36 | 0.94 | Y | <=== | |
Show | HD 20121 | 216209 | 03 12 26 -44 25 11 | HJ 3556 AB,C | 2017 | 68 | 188 | 3.7 | 6.42 | 8.76 | 2.34 |
Constellation | Eridanus | SAO | 216209 | HIP | 14913 | Tycho2 | 7567-01177-1 | ||||
Gaia DR2 | 4850405974392311168 | HD | 20121 | HR | 968 | GC | 3845 | ||||
CD | CD-44 1025 | CP | CP-44 338 | FK5 | 2228 | Distance | 42.5 | ||||
Distance ly | 138.64 |
Period (P) | 45.2y | Periastron (T) | 1977.5y | Semi-major axis (a) | 0.41a | |||
Eccentricity (e) | 0.9 | Inclination (i) | 165° | Longitude of periastron (ω) | 118° | |||
Node (Ω) | 110° | Notes | n | Reference | Sod1999 | |||
Equinox | 2000 | Last observation | Grade | 2 | (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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