Coord 2000 | 19487+1504 |
Discov num | A 1658 |
Comp | Coord arcsec 2000 | 19 48 39.64 +15 03 32.4 |
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Date first | 1907 |
Date last | 2018 |
Obs | 82 |
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Pa first | 161 |
Pa last | 67 |
P.A. Now (θ) | 58.6° |
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Sep first | 0.2 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.23" |
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Mag pri | 8.30 |
Mag sec | 8.74 |
delta mag (ΔM) | 0.44 |
Spectral class | F5V (yellow-white) |
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Pri motion ra | +044 |
Sec motion ra | |||||||||
Pri motion dec | +012 |
Sec motion dec | |||||||||
Notes |
Precise pa | 66.5 |
Precise sep | 0.228 |
Constellation | Aquila |
SAO | 105284 |
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HIP | 97469 |
Tycho2 | 1615-00730-1 |
Gaia DR2 | 94259738752 |
HD | 187283 |
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ADS | 12961 |
BD | BD+14 4048 |
Distance | 136.61 |
Distance ly | 445.62 |
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last precise pa | 66.5 |
last precise sep | 0.228 |
Period (P) | 88.1y | ± 1.3 | Periastron (T) | 1991.6y | ± 1.2 | Semi-major axis (a) | 0.224a | ± 0.001 |
Eccentricity (e) | 0.087 | ± 0.004 | Inclination (i) | 169.8° | ± 5 | Longitude of periastron (ω) | 228.2° | ± 35 |
Node (Ω) | 51.5° | ± 40 | Note | Grade | 2 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2000 |
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 |
19487+1504 | A 1658 | 2000 | 78 | 145 | 0.2 | 8.30 | 8.74 | F5V | NO | 194839.64+150332.4 | |
19487+1504 | A 1658 | 2006 | 79 | 115 | 0.2 | 8.30 | 8.74 | F5V | NO | 194839.64+150332.4 | |
19487+1504 | A 1658 | 2007 | 82 | 112 | 0.2 | 8.30 | 8.74 | F5V | NO | 194839.64+150332.4 | |
19487+1504 | A 1658 | 2015 | 81 | 78 | 0.2 | 8.30 | 8.74 | F5V | NO | 194839.64+150332.4 | |
19487+1504 | A 1658 | 2018 | 82 | 67 | 0.2 | 8.30 | 8.74 | F5V | NO | 194839.64+150332.4 |