Coord 2000 | 00271-0753 |
Discov num | A 431 |
Comp | AB |
Coord arcsec 2000 | 00 27 07.77 -07 52 33.6 |
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Date first | 1903 |
Date last | 2019 |
Obs | 79 |
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Pa first | 353 |
Pa last | 288 |
P.A. Now (θ) | 283.2° |
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Sep first | 0.2 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.18" |
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Mag pri | 8.84 |
Mag sec | 8.95 |
delta mag (ΔM) | 0.11 |
Spectral class | G5 (yellow) |
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Pri motion ra | -037 |
Sec motion ra | -037 |
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Pri motion dec | +018 |
Sec motion dec | +018 |
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Notes | O
(Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 00 27 08 -07 52 34 | A 431 AB | 2019 | 79 | 283 | 0.2 | 8.84 | 8.95 | 0.11 | Y | <=== | ||
Show | 00 27 08 -07 52 34 | SKF 1423 AB,C | 2015 | 7 | 318 | 110.3 | 8.21 | 14.07 | 5.86 |
Precise pa | 288.4 |
Precise sep | 0.178 |
Constellation | Hydra |
HIP | 2143 |
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Tycho2 | 5262-00207-1 |
Gaia DR2 | 2430329616926916480 |
HD | 2333 |
ADS | 363 |
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BD | BD-08 65 |
Distance | 55.49 |
Distance ly | 181.01 |
last precise pa | 288.4 |
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last precise sep | 0.178 |
Period (P) | 53.56y | Periastron (T) | 2003.58y | Semi-major axis (a) | 0.364a | |||
Eccentricity (e) | 0.644 | Inclination (i) | 109° | Longitude of periastron (ω) | 293° | |||
Node (Ω) | 25.5° | Note | Grade | 2 | (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 |
00271-0753 | A 431 | AB | 2011 | 75 | 175 | 0.2 | 8.84 | 8.95 | G5 | NOD | 002707.77-075233.6 |
00271-0753 | A 431 | AB | 2013 | 76 | 158 | 0.2 | 8.84 | 8.95 | G5 | NO | 002707.77-075233.6 |
00271-0753 | A 431 | AB | 2014 | 77 | 147 | 0.2 | 8.84 | 8.95 | G5 | O | 002707.77-075233.6 |
00271-0753 | A 431 | AB | 2017 | 78 | 124 | 0.2 | 8.84 | 8.95 | G5 | O | 002707.77-075233.6 |
00271-0753 | A 431 | AB | 2019 | 79 | 288 | 0.2 | 8.84 | 8.95 | G5 | O | 002707.77-075233.6 |