Coord 2000 | 01315+1521 |
Discov num | BU 506 |
Comp | Coord arcsec 2000 | 01 31 28.99 +15 20 45.0 |
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Date first | 1878 |
Date last | 2008 |
Obs | 28 |
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Pa first | 13 |
Pa last | 62 |
P.A. Now (θ) | 75.6° |
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Sep first | 1.0 |
Sep last | 0.6 |
Sep. Now (ρ) | 0.45" |
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Mag pri | 3.83 |
Mag sec | 7.51 |
delta mag (ΔM) | 3.68 |
Spectral class | G8III (yellow) |
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Pri motion ra | +028 |
Sec motion ra | |||||||||
Pri motion dec | -006 |
Sec motion dec | |||||||||
Notes |
Precise pa | 61.8 |
Precise sep | 0.61 |
Name | Eta Psc |
Constellation | Pisces |
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SAO | 92484 |
HIP | 7097 |
Tycho2 | 1198-01597-1 |
Gaia DR2 | 43195389696 |
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HD | 9270 |
HR | 437 |
GC | 1839 |
ADS | 1199 |
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BD | BD+14 231 |
Bayer | Eta Piscium |
Bayer name | Eta Psc |
Flamsteed | 99 Piscium |
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Flamsteed name | 99 Psc |
Distance | 107.18 |
Distance ly | 349.62 |
last precise pa | 61.8 |
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last precise sep | 0.61 |
Period (P) | 850.5y | ± 66.5 | Periastron (T) | 2040.3y | ± 66.9 | Semi-major axis (a) | 1.228a | ± 0.144 |
Eccentricity (e) | 0.469 | ± 0.053 | Inclination (i) | 58.5° | ± 2.5 | Longitude of periastron (ω) | 86.9° | ± 4 |
Node (Ω) | 32.8° | ± 2 | Note | Grade | 5 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2000 |
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 |
01315+1521 | BU 506 | 2000 | 26 | 54 | 0.6 | 3.83 | 7.51 | G8III | NOD | 013128.99+152045.0 | |
01315+1521 | BU 506 | 2008 | 27 | 62 | 0.6 | 3.83 | 7.51 | G8III | NOD | 013128.99+152045.0 |