02130+0851 MCA 5 (Xi1 Cet)
02h 13m 00.01s +08° 50' 48.3" P.A. 84.00 sep 0.1 mag 4.34, Sp G6II-III dist. 117.51 pc (383.32 l.y.)
Coord 2000 |
02130+0851 |
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Discov num |
MCA 5 |
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Comp |
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Coord arcsec 2000 |
02 13 00.01 +08 50 48.3 |
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Date first |
1981 |
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Date last |
2007 |
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Obs |
2 |
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Pa first |
101 |
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Pa last |
84.1 |
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P.A. Now (θ) |
84.1° |
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Sep first |
0.1 |
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Sep last |
0.104 |
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Sep. Now (ρ) |
0.104" |
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Mag pri |
4.34 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
G6II-III (yellow) |
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Pri motion ra |
-022 |
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Sec motion ra |
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Pri motion dec |
-009 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
Xi1 Cet |
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Var name |
NSV749 Cet |
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Constellation |
Cetus |
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SAO |
110408 |
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HIP |
10324 |
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Tycho2 |
0631-01493-1 |
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Gaia DR2 |
2521951302394148992 |
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HD |
13611 |
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HR |
649 |
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GC |
2656 |
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BD |
BD+08 345 |
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Bayer |
Xi 1 Ceti |
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Bayer name |
Xi1 Cet |
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Flamsteed |
65 Ceti |
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Flamsteed name |
65 Cet |
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FK5 |
1058 |
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Distance |
117.51 |
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Distance ly |
383.32 |
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Bayer greek |
ξ1 Cet |
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ORBITAL ELEMENTS
Period (P) | 1642.1d (4.5y) | |
Periastron (T) | 34985.5d (1954.663y) | |
Semi-major axis (a) | 4.52m | ± 4.5 |
Eccentricity (e) | 0 | |
Inclination (i) | 106.47° | ± 15.34 |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 71.24° | ± 23.97 |
Notes | n | |
Reference | HIP1997d | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
61.9 |
0.004 |
2001-01-01 |
288.7 |
0.002 |
2002-01-01 |
248.3 |
0.004 |
2003-01-01 |
159.6 |
0.001 |
2004-01-01 |
73.9 |
0.004 |
2005-01-01 |
32.4 |
0.002 |
2006-01-01 |
260.3 |
0.004 |
2007-01-01 |
232.1 |
0.003 |
2008-01-01 |
89.4 |
0.003 |
2009-01-01 |
61.6 |
0.004 |
2010-01-01 |
287.7 |
0.002 |
2011-01-01 |
248.1 |
0.004 |
2012-01-01 |
157.3 |
0.001 |
2013-01-01 |
73.8 |
0.004 |
2014-01-01 |
31.3 |
0.002 |
2015-01-01 |
260.0 |
0.004 |
2016-01-01 |
231.7 |
0.003 |
2017-01-01 |
89.0 |
0.003 |
2018-01-01 |
61.4 |
0.004 |
2019-01-01 |
286.8 |
0.002 |
2020-01-01 |
247.9 |
0.004 |
2021-01-01 |
155.0 |
0.001 |
2022-01-01 |
73.6 |
0.004 |
2023-01-01 |
30.3 |
0.002 |
2024-01-01 |
259.8 |
0.004 |
2025-01-01 |
231.3 |
0.003 |
2026-01-01 |
88.6 |
0.003 |
2027-01-01 |
61.1 |
0.004 |
2028-01-01 |
285.9 |
0.002 |
2029-01-01 |
247.7 |
0.004 |
2030-01-01 |
152.7 |
0.001 |
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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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