Coord 2000 | 20081-3929 |
Discov num | RST2134 |
Comp | Coord arcsec 2000 | 20 08 08.89 -39 29 29.6 |
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Date first | 1932 |
Date last | 2018 |
Obs | 9 |
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Pa first | 137 |
Pa last | 50 |
P.A. Now (θ) | 46.4° |
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Sep first | 0.2 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.26" |
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Mag pri | 10.49 |
Mag sec | 10.90 |
delta mag (ΔM) | 0.41 |
Spectral class | G0+G0 (yellow/yellow) |
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Pri motion ra | -014 |
Sec motion ra | |||||||||
Pri motion dec | +010 |
Sec motion dec | |||||||||
Notes |
Precise pa | 49.6 |
Precise sep | 0.251 |
Constellation | Sagittarius |
HIP | 99185 |
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Tycho2 | 7951-00440-1 |
Gaia DR2 | 12872066304 |
HD | 190759 |
CD | CD-3913627 |
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CP | CP-39 8624 |
Distance | 136.24 |
Distance ly | 444.41 |
last precise pa | 49.6 |
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last precise sep | 0.251 |
Period (P) | 151.79y | ± 5 | Periastron (T) | 1977.23y | ± 0.75 | Semi-major axis (a) | 0.259a | ± 0.008 |
Eccentricity (e) | 0.258 | ± 0.03 | Inclination (i) | 133.1° | ± 3 | Longitude of periastron (ω) | 198.9° | ± 5 |
Node (Ω) | 22.2° | ± 3 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | 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 |
20081-3929 | RST2134 | 1991 | 7 | 136 | 0.2 | 10.49 | 10.90 | G0V | NO | 200808.89-392929.6 | |
20081-3929 | RST2134 | 2015 | 8 | 53 | 0.2 | 10.49 | 10.90 | G0V | O | 200808.89-392929.6 | |
20081-3929 | RST2134 | 2018 | 9 | 50 | 0.3 | 10.49 | 10.90 | G0+G0 | NO | 200808.89-392929.6 |