00465-0131 RST4157

 
 
00h 46m 31.18s -01 30' 31.3" P.A. 77.30 sep 0.1 mag 10.00,10.00 Sp G0
 
 
Coord 2000
00465-0131
Discov num
RST4157
Comp
Coord arcsec 2000
00 46 31.18 -01 30 31.3
Date first
1939
Date last
2019
Obs
8
Pa first
95
Pa last
76
P.A. Now (θ)
77.3°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
10.00
Mag sec
10.00
delta mag (ΔM)
0
Spectral class
G0 (yellow)
Pri motion ra
+047
Sec motion ra
Pri motion dec
-027
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
76.4
Precise sep
0.122
Constellation
Cetus
Tycho2
4673-00637-1
Gaia DR2
36580943488
HD
4424
last precise pa
76.4
last precise sep
0.122
 
 
ORBITAL ELEMENTS
 
 
Period (P)94.8y Periastron (T)2008.2y Semi-major axis (a)0.161a
Eccentricity (e)0.647 Inclination (i)59° Longitude of periastron (ω)200.6°
Node (Ω)97.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2019
label rho theta
2000 0.060 193.6
2001 0.057 204.9
2002 0.056 217.0
2003 0.056 229.4
2004 0.057 241.4
2005 0.059 252.8
2006 0.060 263.6
2007 0.059 274.5
2008 0.055 286.2
2009 0.049 300.4
2010 0.042 319.4
2011 0.038 344.3
2012 0.040 10.6
2013 0.047 31.5
2014 0.058 45.8
2015 0.069 55.5
2016 0.081 62.4
2017 0.093 67.5
2018 0.104 71.5
2019 0.115 74.7
2020 0.126 77.3
2021 0.136 79.6
2022 0.145 81.6
2023 0.154 83.3
2024 0.162 84.8
2025 0.170 86.2
2026 0.178 87.5
2027 0.185 88.7
2028 0.192 89.8
2029 0.198 90.8
2030 0.204 91.8

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






wds00465-0131a.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
00465-0131 RST4157 1986 4 13 0.2 10.00 10.00 G0 004631.18-013031.3
00465-0131 RST4157 2008 5 114 0.1 10.00 10.00 G0 004631.18-013031.3
00465-0131 RST4157 2015 6 61 0.1 10.00 10.00 G0 004631.18-013031.3
00465-0131 RST4157 2018 7 74 0.1 10.00 10.00 G0 004631.18-013031.3
00465-0131 RST4157 2019 8 76 0.1 10.00 10.00 G0 004631.18-013031.3

If you need more information about this double, apply for a data request form to the WDS.