Coord 2000 | 20306+1349 |
Discov num | HDS2932 |
Comp | Coord arcsec 2000 | 20 30 33.47 +13 49 02.4 |
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Date first | 1991 |
Date last | 2019 |
Obs | 10 |
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Pa first | 325 |
Pa last | 319 |
P.A. Now (θ) | 326.5° |
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Sep first | 0.1 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.16" |
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Mag pri | 8.61 |
Mag sec | 9.23 |
delta mag (ΔM) | 0.62 |
Spectral class | F8 (yellow-white) |
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Pri motion ra | +011 |
Sec motion ra | |||||||||
Pri motion dec | -014 |
Sec motion dec | |||||||||
Notes | O
(Orbital solution) |
Precise pa | 319.3 |
Precise sep | 0.157 |
Constellation | Delphinus |
SAO | 106180 |
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HIP | 101181 |
Tycho2 | 1099-01401-1 |
Gaia DR2 | 57532613632 |
HD | 195397 |
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BD | BD+13 4415 |
Distance | 91.24 |
Distance ly | 297.62 |
last precise pa | 319.3 |
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last precise sep | 0.157 |
Period (P) | 26.1y | ± 0.6 | Periastron (T) | 2006.12y | ± 0.09 | Semi-major axis (a) | 122.4m | ± 3.9 |
Eccentricity (e) | 0.829 | ± 0.011 | Inclination (i) | 66.9° | ± 1.6 | Longitude of periastron (ω) | 309.5° | ± 2.5 |
Node (Ω) | 170.5° | ± 2 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2008 |
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 |
20306+1349 | HDS2932 | 1997 | 2 | 330 | 0.2 | 8.61 | 9.23 | F8 | 203033.47+134902.4 | ||
20306+1349 | HDS2932 | 2004 | 3 | 357 | 0.1 | 8.61 | 9.23 | F8 | 203033.47+134902.4 | ||
20306+1349 | HDS2932 | 2008 | 6 | 259 | 0.0 | 8.61 | 9.23 | F8 | D | 203033.47+134902.4 | |
20306+1349 | HDS2932 | 2015 | 7 | 309 | 0.1 | 8.61 | 9.23 | F8 | O | 203033.47+134902.4 | |
20306+1349 | HDS2932 | 2017 | 8 | 316 | 0.1 | 8.61 | 9.23 | F8 | O | 203033.47+134902.4 | |
20306+1349 | HDS2932 | 2018 | 9 | 317 | 0.1 | 8.61 | 9.23 | F8 | O | 203033.47+134902.4 | |
20306+1349 | HDS2932 | 2019 | 10 | 319 | 0.2 | 8.61 | 9.23 | F8 | O | 203033.47+134902.4 |