02460-0457 BU   83

 
 
02H 45M 59.63S -04 57' 23.2" P.A. 13 SEP 1 MAG 7.73,9.64 SP F2 DIST. 75.87 PC (247.49 L.Y.)
 
 
Coord 2000
02460-0457
Discov num
BU   83
Comp
Coord arcsec 2000
02 45 59.63 -04 57 23.2
Date first
1872
Date last
2015
Obs
65
Pa first
125
Pa last
13
P.A. Now (θ)
13°
Sep first
1.0
Sep last
1.0
Sep. Now (ρ)
1"
Mag pri
7.73
Mag sec
9.64
delta mag (ΔM)
1.91
Spectral class
F2 (yellow-white)
Pri motion ra
+050
Sec motion ra
+050
Pri motion dec
+002
Sec motion dec
+002
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
HIP
12912
Tycho2
4702-00556-1
HD
17251
ADS
2111
BD
BD-05 514
Distance
75.87
Distance ly
247.49
last precise pa
12.8
last precise sep
0.984
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)36y Periastron (T)1900.5y Semi-major axis (a)0.08a
Eccentricity (e)0.15 Inclination (i)50° Longitude of periastron (ω)280°
Node (Ω)110° Note Grade9(1=Definitive, 9=Indet.)
Equinox1900 Last observation1968
label rho theta
2000 0.081 288.6
2001 0.078 295.0
2002 0.074 302.0
2003 0.069 309.9
2004 0.063 319.3
2005 0.056 330.9
2006 0.050 345.7
2007 0.045 4.0
2008 0.044 24.9
2009 0.046 45.2
2010 0.051 62.4
2011 0.058 76.1
2012 0.064 87.0
2013 0.070 96.0
2014 0.074 103.9
2015 0.077 111.1
2016 0.078 117.9
2017 0.077 124.7
2018 0.076 131.6
2019 0.073 138.9
2020 0.070 146.8
2021 0.067 155.4
2022 0.064 164.9
2023 0.061 175.3
2024 0.060 186.4
2025 0.059 198.1
2026 0.060 209.7
2027 0.061 220.8
2028 0.064 231.2
2029 0.068 240.5
2030 0.071 249.0

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)716.26y Periastron (T)2418.03y Semi-major axis (a)2.38a
Eccentricity (e)0.51 Inclination (i)101.4° Longitude of periastron (ω)290.2°
Node (Ω)147.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.869 20.0
2001 0.877 19.4
2002 0.885 18.7
2003 0.893 18.1
2004 0.901 17.5
2005 0.909 16.9
2006 0.917 16.4
2007 0.925 15.8
2008 0.933 15.2
2009 0.941 14.7
2010 0.950 14.1
2011 0.958 13.6
2012 0.967 13.1
2013 0.975 12.6
2014 0.984 12.1
2015 0.992 11.6
2016 1.001 11.1
2017 1.010 10.6
2018 1.019 10.1
2019 1.028 9.7
2020 1.036 9.2
2021 1.045 8.8
2022 1.054 8.3
2023 1.063 7.9
2024 1.072 7.5
2025 1.081 7.1
2026 1.091 6.6
2027 1.100 6.2
2028 1.109 5.8
2029 1.118 5.5
2030 1.127 5.1

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic