Coord 2000 | 01166+1831 |
Discov num | HDS 169 |
Comp | Coord arcsec 2000 | 01 16 36.45 +18 31 21.6 |
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Date first | 1991 |
Date last | 2013 |
Obs | 11 |
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Pa first | 264 |
Pa last | 234 |
P.A. Now (θ) | 224.5° |
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Sep first | 0.6 |
Sep last | 0.6 |
Sep. Now (ρ) | 0.6" |
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Mag pri | 8.61 |
Mag sec | 12.20 |
delta mag (ΔM) | 3.59 |
Spectral class | G5 (yellow) |
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Pri motion ra | +282 |
Sec motion ra | |||||||||
Pri motion dec | +020 |
Sec motion dec | |||||||||
Notes |
Precise pa | 234.2 |
Precise sep | 0.604 |
Constellation | Pisces |
SAO | 92344 |
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HIP | 5952 |
Tycho2 | 1200-01141-1 |
Gaia DR2 | 17611229056 |
HD | 7640 |
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BD | BD+17 176 |
Distance | 63.86 |
Distance ly | 208.31 |
last precise pa | 234.2 |
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last precise sep | 0.604 |
Period (P) | 143.73y | Periastron (T) | 2115.16y | Semi-major axis (a) | 0.767a | |||
Eccentricity (e) | 0.575 | Inclination (i) | 118.3° | Longitude of periastron (ω) | 93.9° | |||
Node (Ω) | 102.7° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2010 |
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 |
01166+1831 | HDS 169 | 1999 | 3 | 254 | 0.6 | 8.61 | 12.20 | G5 | D | 011636.28+183121.4 | |
01166+1831 | HDS 169 | 2004 | 4 | 248 | 0.6 | 8.61 | 12.20 | G5 | D | 011636.28+183121.4 | |
01166+1831 | HDS 169 | 2007 | 6 | 244 | 0.6 | 8.61 | 12.20 | G5 | D | 011636.28+183121.4 | |
01166+1831 | HDS 169 | 2010 | 8 | 239 | 0.6 | 8.61 | 12.20 | G5 | D | 011636.28+183121.4 | |
01166+1831 | HDS 169 | 2012 | 10 | 235 | 0.6 | 8.61 | 12.20 | G5 | OD | 011636.28+183121.4 | |
01166+1831 | HDS 169 | 2013 | 11 | 234 | 0.6 | 8.61 | 12.20 | G5 | NO | 011636.45+183121.6 |