Coord 2000 | 20203+3924 |
Discov num | A 1427 |
Comp | AB |
Coord arcsec 2000 | 20 20 15.22 +39 24 11.8 |
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Date first | 1906 |
Date last | 2012 |
Obs | 49 |
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Pa first | 112 |
Pa last | 132 |
P.A. Now (θ) | 146.4° |
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Sep first | 0.3 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.17" |
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Mag pri | 6.57 |
Mag sec | 8.17 |
delta mag (ΔM) | 1.6 |
Spectral class | A2V+A5V (white/white) |
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Pri motion ra | -003 |
Sec motion ra | |||||||||
Pri motion dec | -029 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 69856 | 20 20 15 +39 24 12 | A 1427 AB | 2012 | 49 | 146 | 0.2 | 6.57 | 8.17 | 1.60 | Y | <=== | |
Show | 69856 | 20 20 15 +39 24 12 | STF 2668 AB,C | 2016 | 64 | 280 | 3.5 | 6.34 | 8.49 | 2.15 |
Precise pa | 132.4 |
Precise sep | 0.19 |
Constellation | Cygnus |
SAO | 69856 |
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HIP | 100268 |
Tycho2 | 3156-02225-1 |
Gaia DR2 | 2061463669341204736 |
HD | 193702 |
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HR | 7784 |
ADS | 13728 |
BD | BD+38 4021 |
Distance | 180.51 |
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Distance ly | 588.82 |
last precise pa | 132.4 |
last precise sep | 0.19 |
Period (P) | 82.61y | Periastron (T) | 2032.75y | Semi-major axis (a) | 0.25a | |||
Eccentricity (e) | 0.879 | Inclination (i) | 56.1° | Longitude of periastron (ω) | 238.3° | |||
Node (Ω) | 70.4° | Note | Grade | 3 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2008 |
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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 |
20203+3924 | A 1427 | AB | 2007 | 42 | 131 | 0.3 | 6.57 | 8.17 | A2V+A5V | NOD | 202015.22+392411.8 |
20203+3924 | A 1427 | AB | 2008 | 46 | 130 | 0.3 | 6.57 | 8.17 | A2V+A5V | NOD | 202015.22+392411.8 |