Coord 2000 | 19540+1518 |
Discov num | STF2596 |
Comp | Coord arcsec 2000 | 19 54 01.95 +15 17 31.7 |
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Date first | 1828 |
Date last | 2016 |
Obs | 190 |
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Pa first | 355 |
Pa last | 297 |
P.A. Now (θ) | 296.6° |
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Sep first | 2.1 |
Sep last | 2.1 |
Sep. Now (ρ) | 1.97" |
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Mag pri | 7.29 |
Mag sec | 8.68 |
delta mag (ΔM) | 1.39 |
Spectral class | F8V (yellow-white) |
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Pri motion ra | -012 |
Sec motion ra | -012 |
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Pri motion dec | -009 |
Sec motion dec | -009 |
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Notes | O
(Orbital solution) |
Precise pa | 297.3 |
Precise sep | 2.147 |
Constellation | Aquila |
SAO | 105396 |
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HIP | 97922 |
Tycho2 | 1616-00256-1 |
Gaia DR2 | 95307811712 |
HD | 188328 |
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ADS | 13082 |
BD | BD+14 4083 |
Distance | 82.58 |
Distance ly | 269.38 |
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last precise pa | 297.3 |
last precise sep | 2.147 |
Period (P) | 2971.0861y | ± 1397.0172 | Periastron (T) | 2354.1964y | ± 226.1355 | Semi-major axis (a) | 8.50966a | ± 4.29319 |
Eccentricity (e) | 0.8412 | ± 0.12277 | Inclination (i) | 102.104° | ± 6.864 | Longitude of periastron (ω) | 242.962° | ± 19.747 |
Node (Ω) | 54.788° | ± 25.109 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | Last observation | 2015 |
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 |
19540+1518 | STF2596 | 2005 | 191 | 301 | 2.0 | 7.29 | 8.68 | F8V | D | 195401.95+151731.7 | |
19540+1518 | STF2596 | 2007 | 193 | 300 | 2.1 | 7.29 | 8.68 | F8V | D | 195401.95+151731.7 | |
19540+1518 | STF2596 | 2010 | 195 | 299 | 1.8 | 7.29 | 8.68 | F8V | D | 195401.95+151731.7 | |
19540+1518 | STF2596 | 2011 | 198 | 298 | 2.0 | 7.29 | 8.68 | F8V | 195401.95+151731.7 | ||
19540+1518 | STF2596 | 2012 | 186 | 298 | 2.0 | 7.29 | 8.68 | F8V | 195401.95+151731.7 | ||
19540+1518 | STF2596 | 2013 | 187 | 298 | 2.0 | 7.29 | 8.68 | F8V | 195401.95+151731.7 | ||
19540+1518 | STF2596 | 2014 | 188 | 297 | 2.1 | 7.29 | 8.68 | F8V | 195401.95+151731.7 | ||
19540+1518 | STF2596 | 2016 | 189 | 297 | 2.1 | 7.29 | 8.68 | F8V | 195401.95+151731.7 |