Coord 2000 | 21041+0300 | Discov num | DSG 6 | Comp | Aa,Ab | Coord arcsec 2000 | 21 04 07.38 +02 59 40.1 | ||||
Date first | 2012 | Date last | 2015 | Obs | 8 | ||||||
Pa first | 225 | Pa last | 155.3 | P.A. Now (θ) | 155.3° | ||||||
Sep first | 0.0 | Sep last | 0.009 | Sep. Now (ρ) | 0.009" | ||||||
Mag pri | 7.60 | Mag sec | 9.10 | delta mag (ΔM) | 1.5 | Spectral class | F9V+G9V (yellow-white/yellow) | ||||
Pri motion ra | -274 | Sec motion ra | |||||||||
Pri motion dec | -372 | 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 | 126509 | 21 04 07 +02 59 40 | DSG 6 Aa,Ab | 2015 | 8 | 155 | 0.0 | 7.60 | 9.10 | 1.50 | Y | <=== | |
Show | HD 200580 | 126509 | 21 04 07 +02 59 40 | WSI 6 AB | 2021 | 35 | 53 | 0.1 | 7.50 | 9.50 | 2.00 | Y |
Constellation | Equuleus | SAO | 126509 | HIP | 103987 | Tycho2 | 0530-00708-1 | ||||
HD | 200580 | BD | BD+02 4295 | Distance | 51.89 | Distance ly | 169.27 |
Period (P) | 1.03483y | ± 0.00008 | Periastron (T) | 2014.6223y | ± 0.0089 | Semi-major axis (a) | 0.0284a | |
Eccentricity (e) | 0.0934 | ± 0.004 | Inclination (i) | 68.6° | ± 13.7 | Longitude of periastron (ω) | 124.9° | ± 3.1 |
Node (Ω) | 97.3° | ± 12.5 | Notes | n | Reference | Tok2017a | ||
Equinox | 2000 | Last observation | 2015 | Grade | 4 | (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 |
|