03053-4059 HDS 391

 
 
03h 05m 18.24s -40 59' 03.2" P.A. 338 sep 0.1 mag 7.91,9.58 Sp F5V dist. 80.91 pc (263.93 l.y.)
 
 
Coord 2000
03053-4059
Discov num
HDS 391
Comp
Coord arcsec 2000
03 05 18.24 -40 59 03.2
Date first
1991
Date last
2015
Obs
3
Pa first
303
Pa last
338
P.A. Now (θ)
338°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.91
Mag sec
9.58
delta mag (ΔM)
1.67
Spectral class
F5V (yellow-white)
Pri motion ra
+036
Sec motion ra
Pri motion dec
+005
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
338.3
Precise sep
0.111
Constellation
Eridanus
SAO
216162
HIP
14361
Tycho2
7563-00636-1
HD
19337
CD
CD-41 893
CP
CP-41 289
Distance
80.91
Distance ly
263.93
last precise pa
338.3
last precise sep
0.111
 
 
ORBITAL ELEMENTS
 
 
Period (P)53.12y Periastron (T)2036.18y Semi-major axis (a)0.258a
Eccentricity (e)0.5 Inclination (i)80° Longitude of periastron (ω)239.8°
Node (Ω)303.7° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 0.295 310.1
2001 0.291 310.9
2002 0.285 311.7
2003 0.278 312.6
2004 0.269 313.5
2005 0.260 314.5
2006 0.249 315.5
2007 0.238 316.6
2008 0.225 317.9
2009 0.212 319.3
2010 0.198 321.0
2011 0.183 322.8
2012 0.168 325.0
2013 0.152 327.7
2014 0.136 331.0
2015 0.120 335.1
2016 0.105 340.5
2017 0.090 347.7
2018 0.076 357.7
2019 0.066 11.3
2020 0.060 28.8
2021 0.060 48.1
2022 0.066 65.6
2023 0.076 79.2
2024 0.089 89.2
2025 0.104 96.5
2026 0.118 102.0
2027 0.132 106.3
2028 0.145 109.9
2029 0.156 112.9
2030 0.164 115.5

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

grafico orbita





wds03053-4059e.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
03053-4059 HDS 391 1991 1 303 0.2 7.91 9.58 F5V 030518.24-405903.2
03053-4059 HDS 391 2014 2 335 0.1 7.91 9.58 F5V 030518.24-405903.2
03053-4059 HDS 391 2015 3 338 0.1 7.91 9.58 F5V 030518.24-405903.2

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