Coord 2000 | 20312+1116 |
Discov num | DA 1 |
Comp | BC |
Coord arcsec 2000 | 20 31 11.94 +11 15 33.7 |
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Date first | 1840 |
Date last | 2016 |
Obs | 98 |
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Pa first | 209 |
Pa last | 184 |
P.A. Now (θ) | 189.7° |
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Sep first | 0.7 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.37" |
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Mag pri | 7.90 |
Mag sec | 8.00 |
delta mag (ΔM) | 0.1 |
Spectral class | Am (white) |
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Pri motion ra | -006 |
Sec motion ra | -006 |
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Pri motion dec | -010 |
Sec motion dec | -010 |
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Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 106196 | 20312+1116 | CHR 99 | Aa,Ab | 1983 | 2016 | 14 | 142 | 0.4 | 7.10 | |||||
Show | 106195 | 20312+1116 | STF2690 | A,BC | 1777 | 2019 | 160 | 255 | 17.8 | 7.12 | 7.39 | 0.27 | |||
Show | 106195 | 20312+1116 | HJ 269 | AD | 1825 | 2016 | 17 | 108 | 23.0 | 7.12 | 12.10 | 4.98 | |||
Show | 106195 | 20312+1116 | DA 1 | BC | 1840 | 2016 | 98 | 190 | 0.4 | 7.90 | 8.00 | 0.10 | Y | <=== |
Precise pa | 183.7 |
Precise sep | 0.297 |
Constellation | Delphinus |
SAO | 106195 |
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HIP | 101233 |
Tycho2 | 1095-01695-1 |
Gaia DR2 | 88501616128 |
HD | 195482 |
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ADS | 13946 |
Distance | 59.99 |
Distance ly | 195.69 |
last precise pa | 183.7 |
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last precise sep | 0.297 |
Period (P) | 236.52y | Periastron (T) | 1998.22y | Semi-major axis (a) | 0.448a | |||
Eccentricity (e) | 0.875 | Inclination (i) | 68.6° | Longitude of periastron (ω) | 237° | |||
Node (Ω) | 180.3° | Note | Grade | 3 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2006 |
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 |
20312+1116 | DA 1 | BC | 2001 | 97 | 350 | 0.1 | 7.90 | 8.00 | OD | 203111.94+111533.7 | |
20312+1116 | DA 1 | BC | 2006 | 98 | 179 | 0.2 | 7.90 | 8.00 | OD | 203111.94+111533.7 | |
20312+1116 | DA 1 | BC | 2016 | 98 | 184 | 0.3 | 7.90 | 8.00 | Am | NO | 203111.94+111533.7 |