Coord 2000 | 00219-2300 |
Discov num | RST5493 |
Comp | BC |
Coord arcsec 2000 | 00 21 52.67 -23 00 23.2 |
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Date first | 1949 |
Date last | 2020 |
Obs | 13 |
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Pa first | 91 |
Pa last | 93 |
P.A. Now (θ) | 91.7° |
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Sep first | 0.2 |
Sep last | 0.1 |
Sep. Now (ρ) | 0.1" |
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Mag pri | 9.90 |
Mag sec | 9.90 |
delta mag (ΔM) | 0 |
Spectral class | |||||
Pri motion ra | +133 |
Sec motion ra | +133 |
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Pri motion dec | -115 |
Sec motion dec | -115 |
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Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 166213 | 00 21 52 -23 00 28 | HJ 1957 A,BC | 2016 | 44 | 27 | 6.1 | 7.67 | 9.15 | 1.48 | |||
Show | 166213 | 00 21 53 -23 00 23 | RST 5493 BC | 2020 | 13 | 92 | 0.1 | 9.90 | 9.90 | 0.00 | Y | <=== |
Precise pa | 92.7 |
Precise sep | 0.094 |
Spectr | G1V |
Constellation | Cetus |
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SAO | 166213 |
HIP | 1732 |
Tycho2 | 6413-00769-1 |
Gaia DR2 | 2360329587101891072 |
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HD | 1766 |
ADS | 302 |
CD | CD-23 111 |
Distance | 59.49 |
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Distance ly | 194.06 |
last precise pa | 92.7 |
last precise sep | 0.094 |
Period (P) | 18.44y | ± 0.56 | Periastron (T) | 2019.53y | ± 0.45 | Semi-major axis (a) | 0.134a | ± 0.02 |
Eccentricity (e) | 0.831 | ± 0.034 | Inclination (i) | 92.1° | ± 1.7 | Longitude of periastron (ω) | 213.6° | ± 16 |
Node (Ω) | 91.3° | ± 1.5 | Note | Grade | 3 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2021 |
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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 |
00219-2300 | RST5493 | BC | 1978 | 6 | 90 | 0.1 | 9.90 | 9.90 | 002106.67-230000.0 | ||
00219-2300 | RST5493 | BC | 2008 | 7 | 90 | 0.2 | 9.90 | 9.90 | 002152.67-230023.2 | ||
00219-2300 | RST5493 | BC | 2011 | 9 | 90 | 0.2 | 9.90 | 9.90 | N | 002152.67-230023.2 | |
00219-2300 | RST5493 | BC | 2015 | 10 | 88 | 0.1 | 9.90 | 9.90 | N | 002152.67-230023.2 | |
00219-2300 | RST5493 | BC | 2017 | 12 | 85 | 0.0 | 9.90 | 9.90 | N | 002152.67-230023.2 |