Coord 2000 | 20157+4339 |
Discov num | A 2095 |
Comp | AB |
Coord arcsec 2000 | 20 15 40.26 +43 38 59.6 |
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Date first | 1909 |
Date last | 2009 |
Obs | 22 |
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Pa first | 326 |
Pa last | 336 |
P.A. Now (θ) | 153° |
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Sep first | 0.2 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.28" |
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Mag pri | 9.06 |
Mag sec | 9.82 |
delta mag (ΔM) | 0.76 |
Spectral class | F5 (yellow-white) |
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Pri motion ra | +013 |
Sec motion ra | |||||||||
Pri motion dec | -012 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 49388 | 20157+4339 | A 2095 | AB | 1909 | 2009 | 22 | 153 | 0.3 | 9.06 | 9.82 | 0.76 | Y | <=== | |
Show | 49388 | 20157+4339 | STF2659 | AB,C | 1828 | 2019 | 34 | 312 | 2.7 | 8.61 | 10.82 | 2.21 | |||
Show | 49388 | 20157+4339 | STF2659 | AB,D | 1828 | 2019 | 27 | 252 | 20.5 | 8.61 | 9.83 | 1.22 | |||
Show | 49388 | 20157+4339 | FOX 39 | DE | 1915 | 2015 | 5 | 135 | 1.4 | 9.83 | 13.10 | 3.27 | |||
Show | 49388 | 20157+4339 | A 2095 | DF | 1892 | 2015 | 13 | 48 | 7.6 | 9.83 | 13.80 | 3.97 |
Precise pa | 335.9 |
Precise sep | 0.26 |
Constellation | Cygnus |
SAO | 49388 |
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HIP | 99862 |
Gaia DR2 | 35711861760 |
HD | 192911 |
ADS | 13611 |
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BD | BD+43 3543 |
Distance | 255.75 |
Distance ly | 834.26 |
last precise pa | 335.9 |
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last precise sep | 0.26 |
Period (P) | 148.58y | Periastron (T) | 2049.9y | Semi-major axis (a) | 0.345a | |||
Eccentricity (e) | 0.758 | Inclination (i) | 94.5° | Longitude of periastron (ω) | 101.6° | |||
Node (Ω) | 147.5° | Note | Grade | 4 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2009 |
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 |
20157+4339 | A 2095 | AB | 1997 | 19 | 149 | 0.2 | 8.90 | 8.90 | F5 | NO | 201540.26+433859.6 |
20157+4339 | A 2095 | AB | 2009 | 20 | 156 | 0.3 | 8.90 | 8.90 | F5 | NO | 201540.26+433859.6 |