Coord 2000 | 09128-6055 |
Discov num | HDO 207 |
Comp | AB |
Coord arcsec 2000 | 09 12 50.63 -60 55 00.5 |
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Date first | 1915 |
Date last | 2018 |
Obs | 45 |
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Pa first | 53 |
Pa last | 114 |
P.A. Now (θ) | 122.2° |
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Sep first | 0.3 |
Sep last | 0.1 |
Sep. Now (ρ) | 0.13" |
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Mag pri | 6.97 |
Mag sec | 7.27 |
delta mag (ΔM) | 0.3 |
Spectral class | B9V (blue-white) |
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Pri motion ra | -022 |
Sec motion ra | |||||||||
Pri motion dec | +019 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 250485 | 09 12 51 -60 55 00 | CHR 144 Aa,Ab | 1989 | 1 | 35 | 0.0 | 6.50 | |||||
Show | 250485 | 09 12 51 -60 55 00 | HDO 207 AB | 2018 | 45 | 122 | 0.1 | 6.97 | 7.27 | 0.30 | Y | <=== |
Precise pa | 113.6 |
Precise sep | 0.126 |
Constellation | Carina |
SAO | 250485 |
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HIP | 45214 |
Tycho2 | 8940-02645-1 |
Gaia DR2 | 5299769848327101184 |
HD | 79699 |
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CP | CP-60 1353 |
Distance | 173.31 |
Distance ly | 565.34 |
last precise pa | 113.6 |
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last precise sep | 0.126 |
Period (P) | 400y | ± 30 | Periastron (T) | 1960.65y | ± 1.65 | Semi-major axis (a) | 0.548a | ± 0.007 |
Eccentricity (e) | 0.538 | ± 0.05 | Inclination (i) | 76.4° | ± 1.5 | Longitude of periastron (ω) | 149° | ± 5 |
Node (Ω) | 223.7° | ± 1.5 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2013 |
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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 |
09128-6055 | HDO 207 | AB | 2006 | 38 | 80 | 0.2 | 6.97 | 7.27 | NO | 091250.63-605500.5 | |
09128-6055 | HDO 207 | AB | 2009 | 39 | 87 | 0.2 | 6.97 | 7.27 | NO | 091250.63-605500.5 | |
09128-6055 | HDO 207 | AB | 2010 | 40 | 91 | 0.1 | 6.97 | 7.27 | NO | 091250.63-605500.5 | |
09128-6055 | HDO 207 | AB | 2013 | 41 | 97 | 0.1 | 6.97 | 7.27 | B9V | NO | 091250.63-605500.5 |
09128-6055 | HDO 207 | AB | 2016 | 43 | 110 | 0.1 | 6.97 | 7.27 | B9V | NO | 091250.63-605500.5 |
09128-6055 | HDO 207 | AB | 2018 | 45 | 114 | 0.1 | 6.97 | 7.27 | B9V | NO | 091250.63-605500.5 |