Coord 2000 | 20274+7245 |
Discov num | A 871 |
Comp | Coord arcsec 2000 | 20 27 24.67 +72 44 38.2 |
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Date first | 1904 |
Date last | 2008 |
Obs | 15 |
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Pa first | 95 |
Pa last | 184 |
P.A. Now (θ) | 264.9° |
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Sep first | 0.3 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.11" |
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Mag pri | 9.40 |
Mag sec | 9.60 |
delta mag (ΔM) | 0.2 |
Spectral class | F8 (yellow-white) |
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Pri motion ra | -003 |
Sec motion ra | |||||||||
Pri motion dec | -006 |
Sec motion dec | |||||||||
Notes | O
(Orbital solution) |
Precise pa | 184 |
Precise sep | 0.325 |
Constellation | Draco |
SAO | 9776 |
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Tycho2 | 4455-00436-1 |
ADS | 13914 |
last precise pa | 184 |
last precise sep | 0.325 |
Period (P) | 149y | Periastron (T) | 2024y | Semi-major axis (a) | 0.316a | |||
Eccentricity (e) | 0.67 | Inclination (i) | 57° | Longitude of periastron (ω) | 248° | |||
Node (Ω) | 72.1° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | Last observation |
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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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coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
20274+7245 | A 871 | 1997 | 13 | 196 | 0.3 | 9.40 | 9.60 | F8 | O | 202724.67+724438.2 | |
20274+7245 | A 871 | 2007 | 14 | 183 | 0.3 | 9.40 | 9.60 | F8 | O | 202724.67+724438.2 | |
20274+7245 | A 871 | 2008 | 15 | 184 | 0.3 | 9.40 | 9.60 | F8 | O | 202724.67+724438.2 |