Coord 2000 | 20212-5147 |
Discov num | HDS2907 |
Comp | Coord arcsec 2000 | 20 21 10.95 -51 47 28.6 |
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Date first | 1991 |
Date last | 2020 |
Obs | 11 |
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Pa first | 31 |
Pa last | 29 |
P.A. Now (θ) | 31.8° |
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Sep first | 0.3 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.3" |
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Mag pri | 10.86 |
Mag sec | 11.32 |
delta mag (ΔM) | 0.46 |
Spectral class | M0 (red) |
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Pri motion ra | -040 |
Sec motion ra | |||||||||
Pri motion dec | +094 |
Sec motion dec | |||||||||
Notes | O
(Orbital solution) |
Precise pa | 29 |
Precise sep | 0.299 |
Constellation | Telescopium |
HIP | 100356 |
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Tycho2 | 8417-00626-1 |
Gaia DR2 | 6475337306723609600 |
GL | NN 4145 |
Distance | 24.01 |
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Distance ly | 78.32 |
last precise pa | 29 |
last precise sep | 0.299 |
Period (P) | 9.886y | ± 0.129 | Periastron (T) | 2017.514y | ± 0.016 | Semi-major axis (a) | 0.1948a | ± 0.0047 |
Eccentricity (e) | 0.651 | ± 0.016 | Inclination (i) | 48.8° | ± 2.3 | Longitude of periastron (ω) | 194° | ± 5.5 |
Node (Ω) | 32.7° | ± 3.2 | Note | Grade | 3 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation |
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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 |
20212-5147 | HDS2907 | 1991 | 1 | 31 | 0.3 | 10.86 | 11.32 | M0 | 202110.95-514728.6 | ||
20212-5147 | HDS2907 | 2014 | 2 | 60 | 0.2 | 10.86 | 11.32 | M0 | 202110.95-514728.6 | ||
20212-5147 | HDS2907 | 2015 | 3 | 72 | 0.2 | 10.86 | 11.32 | M0 | 202110.95-514728.6 | ||
20212-5147 | HDS2907 | 2017 | 7 | 210 | 0.1 | 10.86 | 11.32 | M0 | 202110.95-514728.6 | ||
20212-5147 | HDS2907 | 2018 | 9 | 359 | 0.1 | 10.86 | 11.32 | M0 | O | 202110.95-514728.6 | |
20212-5147 | HDS2907 | 2019 | 10 | 14 | 0.2 | 10.86 | 11.32 | M0 | O | 202110.95-514728.6 |