Coord 2000 | 01512+2439 |
Discov num | HO 311 |
Comp | Coord arcsec 2000 | 01 51 13.34 +24 39 08.0 |
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Date first | 1890 |
Date last | 2018 |
Obs | 105 |
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Pa first | 174 |
Pa last | 178 |
P.A. Now (θ) | 359.6° |
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Sep first | 0.4 |
Sep last | 0.4 |
Sep. Now (ρ) | 0.41" |
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Mag pri | 8.22 |
Mag sec | 7.82 |
delta mag (ΔM) | 0.4 |
Spectral class | F1V (yellow-white) |
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Pri motion ra | -004 |
Sec motion ra | |||||||||
Pri motion dec | -026 |
Sec motion dec | |||||||||
Notes |
Precise pa | 178.4 |
Precise sep | 0.417 |
Constellation | Aries |
SAO | 74984 |
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HIP | 8622 |
Tycho2 | 1756-00668-1 |
HD | 11284 |
ADS | 1473 |
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BD | BD+23 246 |
Distance | 131.06 |
Distance ly | 427.52 |
last precise pa | 178.4 |
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last precise sep | 0.417 |
Period (P) | 119.3y | ± 6.2 | Periastron (T) | 1982.72y | ± 0.4 | Semi-major axis (a) | 0.298a | ± 0.0062 |
Eccentricity (e) | 0.888 | ± 0.016 | Inclination (i) | 52.8° | ± 1.7 | Longitude of periastron (ω) | 142° | ± 3.9 |
Node (Ω) | 32.8° | ± 3.9 | Note | Grade | 3 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation |
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 |
01512+2439 | HO 311 | 2002 | 101 | 170 | 0.3 | 8.22 | 7.82 | F1V | NOD | 015113.34+243908.0 | |
01512+2439 | HO 311 | 2008 | 102 | 174 | 0.3 | 8.22 | 7.82 | F1V | NOD | 015113.34+243908.0 | |
01512+2439 | HO 311 | 2014 | 102 | 177 | 0.4 | 8.22 | 7.82 | F1V | NO | 015113.34+243908.0 | |
01512+2439 | HO 311 | 2018 | 105 | 178 | 0.4 | 8.22 | 7.82 | F1V | NO | 015113.34+243908.0 |