Coord 2000 | 09074-4357 |
Discov num | B 1646 |
Comp | AB |
Coord arcsec 2000 | 09 07 23.26 -43 57 18.3 |
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Date first | 1929 |
Date last | 2019 |
Obs | 8 |
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Pa first | 24 |
Pa last | 281 |
P.A. Now (θ) | 266.8° |
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Sep first | 0.3 |
Sep last | 0.0 |
Sep. Now (ρ) | 0.04" |
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Mag pri | 9.50 |
Mag sec | 9.90 |
delta mag (ΔM) | 0.4 |
Spectral class | A5/7II (white) |
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Pri motion ra | -010 |
Sec motion ra | |||||||||
Pri motion dec | +001 |
Sec motion dec | |||||||||
Notes | O
(Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 220870 | 09 07 23 -43 57 18 | B 1646 AB | 2019 | 8 | 267 | 0.0 | 9.50 | 9.90 | 0.40 | Y | <=== | |
Show | 220870 | 09 07 23 -43 57 18 | HJ 4180 AB,C | 2015 | 9 | 128 | 22.1 | 8.55 | 10.09 | 1.54 |
Precise pa | 281.2 |
Precise sep | 0.043 |
Constellation | Vela |
SAO | 220870 |
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Tycho2 | 7689-02574-1 |
Gaia DR2 | 5331063701595081216 |
HD | 78547 |
last precise pa | 281.2 |
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last precise sep | 0.043 |
Period (P) | 208y | Periastron (T) | 2029.45y | Semi-major axis (a) | 0.188a | |||
Eccentricity (e) | 0.6 | Inclination (i) | 116.2° | Longitude of periastron (ω) | 161.1° | |||
Node (Ω) | 15.9° | Note | Grade | 4 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2019 |
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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 |
09074-4357 | B 1646 | AB | 1993 | 5 | 2 | 0.2 | 9.50 | 9.90 | A5/7II | 090723.26-435718.3 | |
09074-4357 | B 1646 | AB | 2018 | 6 | 300 | 0.0 | 9.50 | 9.90 | A5/7II | 090723.26-435718.3 | |
09074-4357 | B 1646 | AB | 2019 | 8 | 281 | 0.0 | 9.50 | 9.90 | A5/7II | 090723.26-435718.3 |