01218-2408 SEE 13 (HD 8281)
01h 21m 46.64s -24° 07' 41.0" P.A. 177.00 sep 1.3 mag 8.89,9.29 Sp G1V dist. 86.06 pc (280.73 l.y.)
Coord 2000 |
01218-2408 |
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Discov num |
SEE 13 |
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Comp |
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Coord arcsec 2000 |
01 21 46.64 -24 07 41.0 |
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Date first |
1897 |
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Date last |
2016 |
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Obs |
31 |
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Pa first |
126 |
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Pa last |
176.6 |
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P.A. Now (θ) |
176.6° |
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Sep first |
0.2 |
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Sep last |
1.265 |
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Sep. Now (ρ) |
1.265" |
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Mag pri |
8.89 |
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Mag sec |
9.29 |
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delta mag (ΔM) |
0.4 |
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Spectral class |
G1V (yellow) |
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Pri motion ra |
+073 |
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Sec motion ra |
+073 |
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Pri motion dec |
+027 |
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Sec motion dec |
+027 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 8281 |
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Constellation |
Cetus |
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SAO |
166988 |
|
HIP |
6367 |
|
Tycho2 |
6425-01613-1 |
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Gaia DR2 |
5040507858341584768 |
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HD |
8281 |
|
ADS |
1102 |
|
CD |
CD-24 588 |
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CP |
CP-24 155 |
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Distance |
86.06 |
|
Distance ly |
280.73 |
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ORBITAL ELEMENTS
Period (P) | 1530.34y | |
Periastron (T) | 1846.51y | |
Semi-major axis (a) | 2.021a | |
Eccentricity (e) | 0.9 | |
Inclination (i) | 67.2° | |
Longitude of periastron (ω) | 148.1° | |
Node (Ω) | 207° | |
Notes | n | |
Reference | Hrt2001b | |
Equinox | 2000 | |
Last observation | 1991 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
174.4 |
1.197 |
2001 |
174.5 |
1.204 |
2002 |
174.6 |
1.211 |
2003 |
174.7 |
1.218 |
2004 |
174.8 |
1.225 |
2005 |
174.9 |
1.232 |
2006 |
175.0 |
1.239 |
2007 |
175.2 |
1.246 |
2008 |
175.3 |
1.253 |
2009 |
175.4 |
1.260 |
2010 |
175.5 |
1.267 |
2011 |
175.6 |
1.273 |
2012 |
175.7 |
1.280 |
2013 |
175.8 |
1.287 |
2014 |
175.9 |
1.294 |
2015 |
176.0 |
1.301 |
2016 |
176.0 |
1.308 |
2017 |
176.1 |
1.314 |
2018 |
176.2 |
1.321 |
2019 |
176.3 |
1.328 |
2020 |
176.4 |
1.335 |
2021 |
176.5 |
1.341 |
2022 |
176.6 |
1.348 |
2023 |
176.7 |
1.355 |
2024 |
176.8 |
1.361 |
2025 |
176.9 |
1.368 |
2026 |
177.0 |
1.375 |
2027 |
177.0 |
1.381 |
2028 |
177.1 |
1.388 |
2029 |
177.2 |
1.394 |
2030 |
177.3 |
1.401 |
2031 |
177.4 |
1.407 |
2032 |
177.5 |
1.414 |
2033 |
177.5 |
1.421 |
2034 |
177.6 |
1.427 |
2035 |
177.7 |
1.434 |
2036 |
177.8 |
1.440 |
2037 |
177.9 |
1.446 |
2038 |
177.9 |
1.453 |
2039 |
178.0 |
1.459 |
2040 |
178.1 |
1.466 |
2041 |
178.2 |
1.472 |
2042 |
178.2 |
1.478 |
2043 |
178.3 |
1.485 |
2044 |
178.4 |
1.491 |
2045 |
178.4 |
1.497 |
2046 |
178.5 |
1.504 |
2047 |
178.6 |
1.510 |
2048 |
178.7 |
1.516 |
2049 |
178.7 |
1.523 |
2050 |
178.8 |
1.529 |
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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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