02321-1515 TOK 382Aa,Ab

 
 
02h 32m 05.23s -15 14' 40.6" P.A. 198.50 sep 0.6 mag 4.70,8.70 Sp F4IV dist. 26.7 pc (87.1 l.y.)
 
 
Coord 2000
02321-1515
Discov num
TOK 382
Comp
Aa,Ab
Coord arcsec 2000
02 32 05.23 -15 14 40.6
Date first
2013
Date last
2020
Obs
8
Pa first
342
Pa last
199
P.A. Now (θ)
198.5°
Sep first
0.2
Sep last
0.6
Sep. Now (ρ)
0.56"
Mag pri
4.70
Mag sec
8.70
delta mag (ΔM)
4
Spectral class
F4IV (yellow-white)
Pri motion ra
-074
Sec motion ra
Pri motion dec
-122
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
02321-1515 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 148445 02 32 05 -15 14 41 TOK 382 Aa,Ab 2020 8 198 0.6 4.70 8.70 4.00 Y <===
Show Sig Cet 148445 02 32 05 -15 14 41 GWP 335 AB 1999 5 252 345.6 4.79 8.77 3.98
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
199
Precise sep
0.554
Constellation
Cetus
SAO
148445
HIP
11783
Tycho2
5860-02587-1
Gaia DR2
5145955421492456960
HD
15798
HR
740
GC
3045
BD
BD-15 449
Flamsteed
76 Ceti
Flamsteed name
76 Cet
Distance
26.7
Distance ly
87.1
last precise pa
199
last precise sep
0.554
 
 
ORBITAL ELEMENTS
 
 
Period (P)21y± 1.9 Periastron (T)2015.632y± 0.062 Semi-major axis (a)0.366a± 0.012
Eccentricity (e)0.858± 0.016 Inclination (i)120.4°± 1.5 Longitude of periastron (ω)24.3°± 3
Node (Ω)23.4°± 1.6 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2021
label rho theta
2000 0.561 198.5
2001 0.597 196.8
2002 0.621 195.2
2003 0.635 193.6
2004 0.641 192.2
2005 0.637 190.7
2006 0.625 189.2
2007 0.604 187.6
2008 0.575 185.9
2009 0.537 184.0
2010 0.490 181.8
2011 0.433 178.9
2012 0.364 175.2
2013 0.281 169.4
2014 0.183 157.9
2015 0.076 113.7
2016 0.068 246.0
2017 0.246 213.4
2018 0.363 206.8
2019 0.448 203.2
2020 0.513 200.6
2021 0.561 198.5
2022 0.597 196.8
2023 0.621 195.2
2024 0.635 193.6
2025 0.641 192.2
2026 0.637 190.7
2027 0.625 189.2
2028 0.604 187.6
2029 0.575 185.9
2030 0.537 184.0


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



 
 


wds02321-1515a.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
02321-1515 TOK 382 Aa,Ab 2013 1 342 0.2 4.70 8.70 F4IV 023205.23-151440.6
02321-1515 TOK 382 Aa,Ab 2014 3 338 0.2 4.70 8.70 F4IV 023205.23-151440.6
02321-1515 TOK 382 Aa,Ab 2017 5 29 0.3 4.70 8.70 F4IV N 023205.23-151440.6
02321-1515 TOK 382 Aa,Ab 2018 6 204 0.4 4.70 8.70 F4IV N 023205.23-151440.6
02321-1515 TOK 382 Aa,Ab 2019 7 201 0.5 4.70 8.70 F4IV N 023205.23-151440.6

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