Coord 2000 | 20213+0250 |
Discov num | HLD 158 |
Comp | Coord arcsec 2000 | 20 21 17.43 +02 50 21.9 |
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Date first | 1882 |
Date last | 2017 |
Obs | 68 |
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Pa first | 40 |
Pa last | 42 |
P.A. Now (θ) | 41° |
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Sep first | 2.0 |
Sep last | 1.2 |
Sep. Now (ρ) | 1.23" |
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Mag pri | 9.71 |
Mag sec | 9.78 |
delta mag (ΔM) | 0.07 |
Spectral class | G0 (yellow) |
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Pri motion ra | +064 |
Sec motion ra | +064 |
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Pri motion dec | -019 |
Sec motion dec | -019 |
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Notes |
Precise pa | 42 |
Precise sep | 1.204 |
Constellation | Aquila |
HIP | 100355 |
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Tycho2 | 0500-00340-1 |
Gaia DR2 | 20259760128 |
HD | 193651 |
ADS | 13738 |
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Distance | 440.53 |
Distance ly | 1437.01 |
last precise pa | 42 |
last precise sep | 1.204 |
Period (P) | 232.4y | Periastron (T) | 1961.16y | Semi-major axis (a) | 0.858a | |||
Eccentricity (e) | 0.746 | Inclination (i) | 128.6° | Longitude of periastron (ω) | 17.7° | |||
Node (Ω) | 218.3° | Note | Grade | 3 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2016 |
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 |
20213+0250 | HLD 158 | 2001 | 61 | 48 | 1.0 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 | |
20213+0250 | HLD 158 | 2006 | 62 | 45 | 1.1 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 | |
20213+0250 | HLD 158 | 2007 | 63 | 44 | 1.1 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 | |
20213+0250 | HLD 158 | 2015 | 64 | 144 | 0.2 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 | |
20213+0250 | HLD 158 | 2016 | 65 | 42 | 1.2 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 | |
20213+0250 | HLD 158 | 2017 | 68 | 42 | 1.2 | 9.71 | 9.78 | G0 | NO | 202117.43+025021.9 |