Coord 2000 | 11537+7345 | Discov num | BU 794 | Comp | AB | Coord arcsec 2000 | 11 53 43.07 +73 45 21.6 | ||||
Date first | 1881 | Date last | 2018 | Obs | 130 | ||||||
Pa first | 107 | Pa last | 63.1 | P.A. Now (θ) | 77.8° | ||||||
Sep first | 0.4 | Sep last | 0.48 | Sep. Now (ρ) | 0.509" | ||||||
Mag pri | 7.23 | Mag sec | 8.32 | delta mag (ΔM) | 1.09 | Spectral class | F8V (yellow-white) | ||||
Pri motion ra | -048 | Sec motion ra | |||||||||
Pri motion dec | -117 | Sec motion dec | |||||||||
Notes | N O (See Notes, Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | HD 103246 | 7445 | 11 53 43 +73 45 22 | BU 794 AB | 2018 | 130 | 63 | 0.5 | 7.23 | 8.32 | 1.09 | Y | <=== |
Show | 7445 | 11 53 43 +73 45 22 | BU 794 AB,C | 2015 | 8 | 81 | 5.7 | 6.84 | 16.50 | 9.66 | |||
Show | 7445 | 11 53 43 +73 45 22 | BU 794 AB,D | 2015 | 8 | 59 | 37.0 | 6.84 | 14.70 | 7.86 |
Name | HD 103246 | Constellation | Draco | SAO | 7445 | HIP | 57994 | ||||
Tycho2 | 4399-01256-1 | Gaia DR2 | 1075979849854380032 | HD | 103246 | GC | 16266 | ||||
ADS | 8337 | BD | BD+74 476 | Distance | 58.17 | Distance ly | 189.75 |
Period (P) | 76.7y | Periastron (T) | 1987.3y | Semi-major axis (a) | 0.41a | |||
Eccentricity (e) | 0.5 | Inclination (i) | 39° | Longitude of periastron (ω) | 247° | |||
Node (Ω) | 22° | 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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