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 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 84.1 P.A. Now (θ) 84.1°
Sep first 0.1 Sep last 0.104 Sep. Now (ρ) 0.104"
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 Var name NSV749 Cet Constellation Cetus SAO 110408
HIP 10324 Tycho2 0631-01493-1 Gaia DR2 2521951302394148992 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 FK5 1058
Distance 117.51 Distance ly 383.32 Bayer greek ξ1 Cet
 
 
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 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(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


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



 
 


wds02130%2B0851r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic