Coord 2000 | 19471-0809 |
Discov num | A 108 |
Comp | Coord arcsec 2000 | 19 47 08.04 -08 09 09.9 |
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Date first | 1900 |
Date last | 2018 |
Obs | 42 |
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Pa first | 183 |
Pa last | 107 |
P.A. Now (θ) | 109.4° |
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Sep first | 0.3 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.32" |
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Mag pri | 8.74 |
Mag sec | 9.24 |
delta mag (ΔM) | 0.5 |
Spectral class | K0 (yellow-orange) |
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Pri motion ra | +003 |
Sec motion ra | |||||||||
Pri motion dec | -024 |
Sec motion dec | |||||||||
Notes | O
(Orbital solution) |
Precise pa | 107.3 |
Precise sep | 0.315 |
Constellation | Aquila |
HIP | 97350 |
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Tycho2 | 5724-01075-1 |
Gaia DR2 | 44448739456 |
HD | 186847 |
ADS | 12911 |
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BD | BD-08 5103 |
Distance | 171.82 |
Distance ly | 560.48 |
last precise pa | 107.3 |
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last precise sep | 0.315 |
Period (P) | 242.85y | Periastron (T) | 1946.34y | Semi-major axis (a) | 0.299a | |||
Eccentricity (e) | 0.717 | Inclination (i) | 51.4° | Longitude of periastron (ω) | 265° | |||
Node (Ω) | 53.8° | Note | Grade | 3 | (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 |
19471-0809 | A 108 | 1996 | 38 | 98 | 0.3 | 8.74 | 9.24 | K0 | NO | 194708.04-080909.9 | |
19471-0809 | A 108 | 2008 | 40 | 101 | 0.3 | 8.74 | 9.24 | K0 | NO | 194708.04-080909.9 | |
19471-0809 | A 108 | 2009 | 41 | 100 | 0.3 | 8.74 | 9.24 | K0 | NO | 194708.04-080909.9 | |
19471-0809 | A 108 | 2018 | 42 | 107 | 0.3 | 8.74 | 9.24 | K0 | O | 194708.04-080909.9 |