Coord 2000 | 15382+3615 | Discov num | HU 1167 | Comp | AB | Coord arcsec 2000 | 15 38 12.91 +36 14 48.6 | ||||
Date first | 1905 | Date last | 2016 | Obs | 26 | ||||||
Pa first | 89 | Pa last | 79.9 | P.A. Now (θ) | 79.9° | ||||||
Sep first | 0.9 | Sep last | 1.363 | Sep. Now (ρ) | 1.363" | ||||||
Mag pri | 8.07 | Mag sec | 9.87 | delta mag (ΔM) | 1.8 | Spectral class | F5 (yellow-white) | ||||
Pri motion ra | -062 | Sec motion ra | -060 | ||||||||
Pri motion dec | +043 | Sec motion dec | +035 | ||||||||
Notes | N O W (See Notes, Orbital solution, ) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | HD 139691 | 15 38 13 +36 14 49 | HU 1167 AB | 2016 | 26 | 80 | 1.4 | 8.07 | 9.87 | 1.80 | Y | <=== | |
Show | 64821 | 15 38 13 +36 14 49 | STF 1964 AC | 2017 | 82 | 90 | 14.5 | 8.07 | 8.06 | 0.01 | |||
Show | 15 38 13 +36 14 49 | STF 1964 AD | 2018 | 19 | 83 | 15.1 | 8.07 | 9.02 | 0.95 | ||||
Show | 64821 | 15 38 14 +36 14 50 | STF 1964 CD | 2019 | 69 | 21 | 1.5 | 8.06 | 9.02 | 0.96 | Y | ||
Show | 64821 | 15 38 14 +36 14 50 | WAK 1 CE | 2011 | 5 | 82 | 0.2 | 8.07 | 8.20 | 0.13 |
Name | HD 139691 | Constellation | Corona Borealis | HIP | 76563 | Tycho2 | 2577-01755-1 | ||||
Gaia DR2 | 1374656960860690560 | HD | 139691 | ADS | 9731 | BD | BD+36 2626 | ||||
Distance | 110.25 | Distance ly | 359.64 |
Period (P) | 834y | ± 272 | Periastron (T) | 2021.8y | ± 91.9 | Semi-major axis (a) | 1.249a | ± 0.1 |
Eccentricity (e) | 0 | Inclination (i) | 97° | ± 2.6 | Longitude of periastron (ω) | 0° | ||
Node (Ω) | 80.5° | ± 2.6 | Notes | n | Reference | Dru1995 | ||
Equinox | Last observation | 1994 | Grade | 5 | (1=Definitive, 9=Indet.) |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|