02193-0259 JOY   1Aa,Ab

 
 
02h 19m 20.78s -02 58' 39.5" P.A. 95.5 sep 0.47 mag 6.80,10.40 Sp M7IIIe dist. 91.66 pc (298.99 l.y.)
 
 
Coord 2000
02193-0259
Discov num
JOY   1
Comp
Aa,Ab
Coord arcsec 2000
02 19 20.78 -02 58 39.5
Date first
1923
Date last
2014
Obs
82
Pa first
130
Pa last
98
P.A. Now (θ)
95.5°
Sep first
0.9
Sep last
0.5
Sep. Now (ρ)
0.47"
Mag pri
6.80
Mag sec
10.40
delta mag (ΔM)
3.6
Spectral class
M7IIIe (red)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-239
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
02193-0259 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 129825 02193-0259 JOY 1 Aa,Ab 1923 2014 82 96 0.5 6.80 10.40 3.60 Y <===
Show Mira 129825 02193-0259 BU 1371 AB 1877 2017 9 68 71.5 6.64 14.07 7.43
Show 129825 02193-0259 H 6 1 AC 1782 2017 42 68 121.8 6.64 9.65 3.01
Show 129825 02193-0259 STG 1 AD 1921 2017 6 324 166.6 6.64 13.66 7.02
Show 129825 02193-0259 H 6 1 BC 1911 2017 4 67 50.3 14.07 9.65 4.42
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
98.1
Precise sep
0.487
Constellation
Cetus
SAO
129825
HIP
10826
Tycho2
4693-01144-1
HD
14386
HR
681
GC
2796
ADS
1778
BD
BD-03 353
Bayer
Omicron Ceti
Bayer name
Omi Cet
Flamsteed
68 Ceti
Flamsteed name
68 Cet
Distance
91.66
Distance ly
298.99
last precise pa
98.1
last precise sep
0.487
 
 
ORBITAL ELEMENTS
 
 
Period (P)497.88y Periastron (T)2285.75y Semi-major axis (a)0.8a
Eccentricity (e)0.16 Inclination (i)112° Longitude of periastron (ω)258.3°
Node (Ω)138.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1998
label rho theta
2000 0.561 107.2
2001 0.556 106.7
2002 0.551 106.1
2003 0.545 105.6
2004 0.540 105.0
2005 0.535 104.4
2006 0.530 103.8
2007 0.525 103.2
2008 0.520 102.5
2009 0.515 101.9
2010 0.510 101.2
2011 0.505 100.6
2012 0.500 99.9
2013 0.495 99.2
2014 0.490 98.5
2015 0.485 97.8
2016 0.480 97.0
2017 0.475 96.3
2018 0.470 95.5
2019 0.465 94.7
2020 0.460 93.9
2021 0.455 93.1
2022 0.451 92.3
2023 0.446 91.4
2024 0.441 90.6
2025 0.437 89.7
2026 0.432 88.8
2027 0.428 87.9
2028 0.424 86.9
2029 0.419 85.9
2030 0.415 85.0

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

grafico orbita





wds02193-0259a.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
02193-0259 JOY 1 Aa,Ab 1998 76 110 0.6 6.80 10.40 M7IIIe NO 021920.78-025839.5
02193-0259 JOY 1 Aa,Ab 2008 77 102 0.5 6.80 10.40 M7IIIe NO 021920.78-025839.5
02193-0259 JOY 1 Aa,Ab 2014 78 98 0.5 6.80 10.40 M7IIIe NO 021920.78-025839.5

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