02130+0851 MCA   5 (Xi1 Cet)

 
 
02H 13M 00.01S +08 50' 48.3" P.A. 84 SEP 0.1 MAG 4.34, SP G6II-III DIST. 117.51 PC (383.32 L.Y.)
 
 
Coord 2000
02130+0851
Discov num
MCA   5
Comp
Coord arcsec 2000
02 13 00.01 +08 50 48.3
Date first
1981
Date last
2007
Obs
2
Pa first
101
Pa last
84
P.A. Now (θ)
84°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
4.34
Mag sec
delta mag (ΔM)
Spectral class
G6II-III (yellow)
Pri motion ra
-022
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Xi1 Cet
Constellation
Cetus
SAO
110408
HIP
10324
Tycho2
0631-01493-1
HD
13611
HR
649
GC
2656
BD
BD+08 345
Bayer
Xi 1 Ceti
Bayer name
Xi1 Cet
Flamsteed
65 Ceti
Flamsteed name
65 Cet
Distance
117.51
Distance ly
383.32
last precise pa
84.1
last precise sep
0.104
 
 
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)
Node (Ω)71.24°± 23.97 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1991
label rho theta
2000-01-01 0.004 61.9
2001-01-01 0.002 288.7
2002-01-01 0.004 248.3
2003-01-01 0.001 159.6
2004-01-01 0.004 73.9
2005-01-01 0.002 32.4
2006-01-01 0.004 260.3
2007-01-01 0.003 232.1
2008-01-01 0.003 89.4
2009-01-01 0.004 61.6
2010-01-01 0.002 287.7
2011-01-01 0.004 248.1
2012-01-01 0.001 157.3
2013-01-01 0.004 73.8
2014-01-01 0.002 31.3
2015-01-01 0.004 260.0
2016-01-01 0.003 231.7
2017-01-01 0.003 89.0
2018-01-01 0.004 61.4
2019-01-01 0.002 286.8
2020-01-01 0.004 247.9
2021-01-01 0.001 155.0
2022-01-01 0.004 73.6
2023-01-01 0.002 30.3
2024-01-01 0.004 259.8
2025-01-01 0.003 231.3
2026-01-01 0.003 88.6
2027-01-01 0.004 61.1
2028-01-01 0.002 285.9
2029-01-01 0.004 247.7
2030-01-01 0.001 152.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic