Coord 2000 | 20210+1028 |
Discov num | J 838 |
Comp | Coord arcsec 2000 | 20 21 00.67 +10 28 21.0 |
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Date first | 1912 |
Date last | 2018 |
Obs | 35 |
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Pa first | 231 |
Pa last | 119 |
P.A. Now (θ) | 120.1° |
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Sep first | 2.9 |
Sep last | 6.9 |
Sep. Now (ρ) | 6.18" |
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Mag pri | 12.50 |
Mag sec | 12.60 |
delta mag (ΔM) | 0.1 |
Spectral class | |||||
Pri motion ra | -018 |
Sec motion ra | +040 |
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Pri motion dec | -007 |
Sec motion dec | -026 |
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Notes |
Precise pa | 118.5 |
Precise sep | 6.882 |
Constellation | Delphinus |
Gaia DR2 | 1753567320839173888 |
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HD | 357347 |
ADS | 13734 |
last precise pa | 118.5 |
last precise sep | 6.882 |
Period (P) | 239.84y | Periastron (T) | 1967.51y | Semi-major axis (a) | 7.451a | |||
Eccentricity (e) | 0.784 | Inclination (i) | 77.6° | Longitude of periastron (ω) | 258.1° | |||
Node (Ω) | 103° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 1995 |
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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 |
20210+1028 | J 838 | 2005 | 17 | 118 | 6.3 | 11.52 | 12.00 | OD | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2009 | 19 | 117 | 6.3 | 11.52 | 12.00 | OD | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2010 | 20 | 118 | 6.4 | 11.52 | 12.00 | OD | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2011 | 22 | 118 | 6.5 | 11.52 | 12.00 | NOD | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2013 | 23 | 118 | 6.6 | 12.50 | 12.60 | NO | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2015 | 24 | 119 | 6.7 | 12.50 | 12.60 | NO | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2016 | 27 | 119 | 6.8 | 12.50 | 12.60 | NO | 202100.67+102821.0 | ||
20210+1028 | J 838 | 2018 | 32 | 119 | 6.9 | 12.50 | 12.60 | NO | 202100.67+102821.0 |