Coord 2000 | 09279+3128 | Discov num | HO 366 | Comp | AB | Coord arcsec 2000 | 09 27 54.30 +31 27 54.1 | ||||
Date first | 1891 | Date last | 2012 | Obs | 34 | ||||||
Pa first | 10 | Pa last | 212.9 | P.A. Now (θ) | 212.9° | ||||||
Sep first | 0.5 | Sep last | 0.224 | Sep. Now (ρ) | 0.224" | ||||||
Mag pri | 9.40 | Mag sec | 9.80 | delta mag (ΔM) | 0.4 | Spectral class | G0 (yellow) | ||||
Pri motion ra | -012 | Sec motion ra | |||||||||
Pri motion dec | -068 | Sec motion dec | |||||||||
Notes | O (Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 61504 | 09 27 54 +31 27 54 | HO 366 AB | 2012 | 34 | 213 | 0.2 | 9.40 | 9.80 | 0.40 | Y | <=== | |
Show | HD 81656 | 61504 | 09 27 54 +31 27 54 | HO 366 AB,C | 2015 | 9 | 59 | 53.3 | 8.87 | 12.34 | 3.47 |
Constellation | Leo | SAO | 61504 | Tycho2 | 2494-00727-1 | Gaia DR2 | 700874070695989888 | ||||
HD | 81656 | ADS | 7384 |
Period (P) | 353.11y | Periastron (T) | 2001.3y | Semi-major axis (a) | 0.404a | |||
Eccentricity (e) | 0.764 | Inclination (i) | 19.4° | Longitude of periastron (ω) | 166.1° | |||
Node (Ω) | 9.8° | Notes | Reference | Zir2010 | ||||
Equinox | 2000 | Last observation | 1997 | Grade | 4 | (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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