Coord 2000 | 19418+5032 |
Discov num | TRN 4 |
Comp | Aa,Ab |
Coord arcsec 2000 | 19 41 49.09 +50 31 31.6 |
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Date first | 1998 |
Date last | 2009 |
Obs | 11 |
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Pa first | 204 |
Pa last | 208 |
P.A. Now (θ) | 208° |
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Sep first | 3.5 |
Sep last | 3.2 |
Sep. Now (ρ) | 3.2" |
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Mag pri | 5.99 |
Mag sec | 13.00 |
delta mag (ΔM) | 7.01 |
Spectral class | G1.5V+M5V (yellow/red) |
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Pri motion ra | -146 |
Sec motion ra | |||||||||
Pri motion dec | -155 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 31898 | 19 41 49 +50 31 32 | TRN 4 Aa,Ab | 2009 | 11 | 208 | 3.2 | 5.99 | 13.00 | 7.01 | Y | <=== | |
Show | 16 Cyg | 31898 | 19 41 49 +50 31 32 | STFA 46 AB | 2020 | 590 | 133 | 39.7 | 6.00 | 6.23 | 0.23 | ||
Show | 31899 | 19 41 52 +50 31 03 | PAT 48 BC | 2015 | 5 | 70 | 18.2 | 4.65 | 11.91 | 7.26 |
Precise pa | 207.6 |
Precise sep | 3.15 |
Other name | c Cyg |
Constellation | Cygnus |
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SAO | 31898 |
HIP | 96895 |
Tycho2 | 3565-01524-1 |
HD | 186408 |
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HR | 7503 |
GC | 27284 |
ADS | 12815 |
GL | Gl 765.1A |
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BD | BD+50 2847 |
Flamsteed | 16 Cygni |
Flamsteed name | 16 Cyg |
Distance | 21.08 |
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Distance ly | 68.76 |
last precise pa | 207.6 |
last precise sep | 3.15 |
Period (P) | 135.127c | Periastron (T) | 153.25y | Semi-major axis (a) | 35.242a | |||
Eccentricity (e) | 0.863 | Inclination (i) | 135.44° | Longitude of periastron (ω) | 26.6° | |||
Node (Ω) | 313.44° | Note | Grade | 4 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 1998 |
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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 |
19418+5032 | TRN 4 | Aa,Ab | 2000 | 5 | 205 | 3.4 | 5.99 | 13.00 | G1.5V | DV | 194149.09+503131.6 |
19418+5032 | TRN 4 | Aa,Ab | 2002 | 7 | 204 | 3.4 | 5.99 | 13.00 | G1.5V | NVD | 194149.09+503131.6 |
19418+5032 | TRN 4 | Aa,Ab | 2009 | 8 | 208 | 3.2 | 5.99 | 13.00 | G1.5V | NV | 194149.09+503131.6 |