02396-1152 FIN 312 (Eps Cet)

 
 
02h 39m 33.83s -11 52' 19.6" P.A. 277 sep 0.1 mag 5.22,6.50 Sp F5V+F5V dist. 21.48 pc (70.07 l.y.)
 
 
Coord 2000
02396-1152
Discov num
FIN 312
Comp
Coord arcsec 2000
02 39 33.83 -11 52 19.6
Date first
1951
Date last
2015
Obs
220
Pa first
238
Pa last
277
P.A. Now (θ)
277°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
5.22
Mag sec
6.50
delta mag (ΔM)
1.28
Spectral class
F5V+F5V (yellow-white/yellow-white)
Pri motion ra
+151
Sec motion ra
Pri motion dec
-237
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
276.7
Precise sep
0.123
Name
Eps Cet
Constellation
Cetus
SAO
148528
HIP
12390
Tycho2
5288-01093-1
HD
16620
HR
781
GC
3199
GL
Gl 105.4A
BD
BD-12 501
Bayer
Epsilon Ceti
Bayer name
Eps Cet
Flamsteed
83 Ceti
Flamsteed name
83 Cet
Distance
21.48
Distance ly
70.07
last precise pa
276.7
last precise sep
0.123
 
 
ORBITAL ELEMENTS
 
 
Period (P)2.6512y± 0.0005 Periastron (T)2012.3109y± 0.0005 Semi-major axis (a)0.1063a± 0.0005
Eccentricity (e)0.23± 0.001 Inclination (i)24.2°± 0.2 Longitude of periastron (ω)40.8°± 0.2
Node (Ω)90.2°± 0.2 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.124 276.0
2001 0.104 11.4
2002 0.083 193.1
2003 0.126 305.7
2004 0.092 61.1
2005 0.109 246.1
2006 0.117 337.5
2007 0.079 126.6
2008 0.125 280.1
2009 0.103 17.3
2010 0.086 202.0
2011 0.126 309.7
2012 0.090 68.8
2013 0.112 251.3
2014 0.115 342.3
2015 0.078 136.8
2016 0.126 284.1
2017 0.101 23.4
2018 0.089 210.3
2019 0.125 313.7
2020 0.089 76.7
2021 0.115 256.2
2022 0.113 347.1
2023 0.077 147.3
2024 0.127 288.0
2025 0.099 29.8
2026 0.093 217.9
2027 0.124 317.8
2028 0.087 84.9
2029 0.117 260.9
2030 0.111 352.2

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

grafico orbita





wds02396-1152a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02396-1152 FIN 312 2007 241 264 0.1 5.22 6.50 F5V+F5V NOD 023933.73-115217.7
02396-1152 FIN 312 2008 242 349 0.1 5.22 6.50 F5V+F5V NOD 023933.73-115217.7
02396-1152 FIN 312 2009 244 131 0.1 5.22 6.50 F5V+F5V NOD 023933.73-115217.7
02396-1152 FIN 312 2013 209 318 0.1 5.22 6.50 F5V F5V NO 023933.73-115217.7
02396-1152 FIN 312 2014 211 88 0.1 5.22 6.50 F5V+F5V NO 023933.73-115217.7
02396-1152 FIN 312 2015 214 277 0.1 5.22 6.50 F5V+F5V NO 023933.73-115217.7

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