Coord 2000 | 19083+5520 |
Discov num | D 19 |
Comp | AB |
Coord arcsec 2000 | 19 08 20.20 +55 19 50.0 |
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Date first | 1874 |
Date last | 2011 |
Obs | 40 |
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Pa first | 20 |
Pa last | 348 |
P.A. Now (θ) | 341.5° |
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Sep first | 0.7 |
Sep last | 0.5 |
Sep. Now (ρ) | 0.48" |
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Mag pri | 7.67 |
Mag sec | 9.51 |
delta mag (ΔM) | 1.84 |
Spectral class | A5IV (white) |
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Pri motion ra | +002 |
Sec motion ra | |||||||||
Pri motion dec | +019 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 31417 | 19083+5520 | D 19 | AB | 1874 | 2011 | 40 | 342 | 0.5 | 7.67 | 9.51 | 1.84 | Y | <=== | |
Show | 31417 | 19083+5520 | STF2479 | AB,C | 1828 | 2017 | 50 | 29 | 6.5 | 7.49 | 9.68 | 2.19 | |||
Show | 31417 | 19083+5520 | GUI 22 | AB,D | 1911 | 2006 | 6 | 121 | 65.9 | 7.49 | 12.30 | 4.81 |
Precise pa | 348.1 |
Precise sep | 0.483 |
Constellation | Cygnus |
SAO | 31417 |
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HIP | 94000 |
Tycho2 | 3924-01546-1 |
Gaia DR2 | 2141186886644505600 |
HD | 179142 |
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ADS | 12104 |
BD | BD+55 2152 |
Distance | 119.62 |
Distance ly | 390.2 |
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last precise pa | 348.1 |
last precise sep | 0.483 |
Period (P) | 2858y | Periastron (T) | 1903y | Semi-major axis (a) | 2.95a | |||
Eccentricity (e) | 0.73 | Inclination (i) | 100° | Longitude of periastron (ω) | 162° | |||
Node (Ω) | 190° | Note | Grade | 5 | (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 |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
19083+5520 | D 19 | AB | 1991 | 36 | 355 | 0.6 | 7.67 | 9.51 | A5IV | N D | 190820.20+551950.0 |
19083+5520 | D 19 | AB | 2006 | 37 | 349 | 0.5 | 7.67 | 9.51 | A5IV | N D | 190820.20+551950.0 |
19083+5520 | D 19 | AB | 2008 | 38 | 348 | 0.5 | 7.67 | 9.51 | A5IV | N D | 190820.20+551950.0 |
19083+5520 | D 19 | AB | 2009 | 39 | 346 | 0.5 | 7.67 | 9.51 | A5IV | N D | 190820.20+551950.0 |
19083+5520 | D 19 | AB | 2011 | 40 | 348 | 0.5 | 7.67 | 9.51 | A5IV | NO | 190820.20+551950.0 |