00494-2313 PES   1

 
 
00h 49m 26.76s -23 12' 44.9" P.A. 191.00 sep 0.6 mag 5.30,14.50 Sp G9V+L9 dist. 18.69 pc (60.97 l.y.)
 
 
Coord 2000
00494-2313
Discov num
PES   1
Comp
Coord arcsec 2000
00 49 26.76 -23 12 44.9
Date first
2008
Date last
2017
Obs
5
Pa first
156
Pa last
191
P.A. Now (θ)
191°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.6"
Mag pri
5.30
Mag sec
14.50
delta mag (ΔM)
9.2
Spectral class
G9V+L9 (yellow/very deep red)
Pri motion ra
+518
Sec motion ra
Pri motion dec
+124
Sec motion dec
Notes
N O W (See Notes, Orbital solution, )
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
190.6
Precise sep
0.581
Constellation
Cetus
SAO
166607
HIP
3850
Tycho2
6421-00822-1
HD
4747
GL
Gl 36
CD
CD-23 315
CP
CP-23 95
Distance
18.69
Distance ly
60.97
last precise pa
190.6
last precise sep
0.581
 
 
ORBITAL ELEMENTS
 
 
Period (P)33.08y± 0.7 Periastron (T)50473.9d (1997.069y)± 5.2 Semi-major axis (a)0.5199a± 0.0512
Eccentricity (e)0.732± 0.0023 Inclination (i)46.3°± 1.1 Longitude of periastron (ω)266.9°± 0.47
Node (Ω)89.9°± 1.4 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2017
label rho theta
2000 0.374 111.5
2001 0.428 120.1
2002 0.470 126.9
2003 0.504 132.8
2004 0.532 137.9
2005 0.554 142.6
2006 0.573 147.0
2007 0.588 151.1
2008 0.600 155.0
2009 0.609 158.8
2010 0.616 162.5
2011 0.621 166.1
2012 0.623 169.7
2013 0.624 173.2
2014 0.622 176.8
2015 0.619 180.4
2016 0.614 184.0
2017 0.607 187.8
2018 0.598 191.6
2019 0.586 195.5
2020 0.573 199.6
2021 0.557 204.0
2022 0.538 208.6
2023 0.516 213.6
2024 0.490 219.0
2025 0.459 225.2
2026 0.422 232.3
2027 0.375 241.0
2028 0.312 252.8
2029 0.223 272.2
2030 0.103 334.3

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






wds00494-2313a.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
00494-2313 PES 1 2017 5 191 0.6 5.30 14.50 G9V+L9 NOW 004926.76-231244.9

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