Coord 2000 | 19471-1953 |
Discov num | BU 146 |
Comp | Coord arcsec 2000 | 19 47 06.75 -19 52 50.4 |
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Date first | 1873 |
Date last | 2018 |
Obs | 34 |
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Pa first | 290 |
Pa last | 72 |
P.A. Now (θ) | 252.1° |
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Sep first | 1.0 |
Sep last | 0.5 |
Sep. Now (ρ) | 0.69" |
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Mag pri | 8.61 |
Mag sec | 9.52 |
delta mag (ΔM) | 0.91 |
Spectral class | G1/2V (yellow) |
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Pri motion ra | -044 |
Sec motion ra | -044 |
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Pri motion dec | -033 |
Sec motion dec | -033 |
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Notes | O
(Orbital solution) |
Precise pa | 72 |
Precise sep | 0.524 |
Constellation | Sagittarius |
SAO | 188563 |
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HIP | 97348 |
Tycho2 | 6320-00835-1 |
Gaia DR2 | 23370895232 |
HD | 186752 |
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ADS | 12909 |
BD | BD-20 5705 |
Distance | 96.53 |
Distance ly | 314.88 |
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last precise pa | 72 |
last precise sep | 0.524 |
Period (P) | 198.12y | Periastron (T) | 2198.94y | Semi-major axis (a) | 1.166a | |||
Eccentricity (e) | 0.852 | Inclination (i) | 65.3° | Longitude of periastron (ω) | 271° | |||
Node (Ω) | 220.6° | Note | Grade | 4 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2018 |
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 |
19471-1953 | BU 146 | 1991 | 29 | 28 | 0.6 | 8.61 | 9.52 | G1/2V | OD | 194706.75-195250.4 | |
19471-1953 | BU 146 | 2009 | 32 | 235 | 0.6 | 8.61 | 9.52 | G1/2V | OD | 194706.75-195250.4 | |
19471-1953 | BU 146 | 2010 | 33 | 58 | 0.5 | 8.61 | 9.52 | G1/2V | OD | 194706.75-195250.4 | |
19471-1953 | BU 146 | 2018 | 34 | 72 | 0.5 | 8.61 | 9.52 | G1/2V | O | 194706.75-195250.4 |