| Coord 2000 | 00320+2740 |
Discov num | COU 547 |
Comp | Coord arcsec 2000 | 00 32 00.65 +27 39 44.1 |
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| Date first | 1970 |
Date last | 2018 |
Obs | 39 |
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| Pa first | 222 |
Pa last | 36 |
P.A. Now (θ) | 63.5° |
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| Sep first | 0.2 |
Sep last | 0.1 |
Sep. Now (ρ) | 0.11" |
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| Mag pri | 8.90 |
Mag sec | 9.10 |
delta mag (ΔM) | 0.2 |
Spectral class | G0V (yellow) |
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| Pri motion ra | +079 |
Sec motion ra | |||||||||
| Pri motion dec | +012 |
Sec motion dec | |||||||||
| Notes | O
(Orbital solution) |
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| Precise pa | 36.2 |
Precise sep | 0.14 |
Constellation | Hydra |
SAO | 74069 |
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| Tycho2 | 1737-02134-1 |
Gaia DR2 | 2856104259148838016 |
HD | 2854 |
last precise pa | 36.2 |
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| last precise sep | 0.14 |
| Period (P) | 265y | Periastron (T) | 1984.9y | Semi-major axis (a) | 0.322a | |||
| Eccentricity (e) | 0.737 | Inclination (i) | 79.9° | Longitude of periastron (ω) | 295.9° | |||
| Node (Ω) | 31.7° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
| Equinox | 2000 | Last observation | 2007 |
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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 |
| 00320+2740 | COU 547 | 1997 | 33 | 41 | 0.2 | 8.90 | 9.10 | G0V | 003200.65+273944.1 | ||
| 00320+2740 | COU 547 | 2007 | 34 | 247 | 0.2 | 8.90 | 9.10 | G0V | 003200.65+273944.1 |