02104-5049 ESG   1

 
 
02h 10m 25.98s -50 49' 25.2" P.A. 168.4 sep 3.06 mag 6.17,13.20 Sp K0V+DQ6 dist. 10.78 pc (35.16 l.y.)
 
 
Coord 2000
02104-5049
Discov num
ESG   1
Comp
Coord arcsec 2000
02 10 25.98 -50 49 25.2
Date first
2000
Date last
2012
Obs
7
Pa first
119
Pa last
89
P.A. Now (θ)
168.4°
Sep first
1.7
Sep last
2.4
Sep. Now (ρ)
3.06"
Mag pri
6.17
Mag sec
13.20
delta mag (ΔM)
7.03
Spectral class
K0V+DQ6 (yellow-orange)
Pri motion ra
+209
Sec motion ra
Pri motion dec
+065
Sec motion dec
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
SAO
232658
HIP
10138
Tycho2
8048-01022-1
HD
13445
HR
637
GL
Gl 86
CD
CD-51 532
CP
CP-51 282
Distance
10.78
Distance ly
35.16
last precise pa
88.9
last precise sep
2.351
 
 
ORBITAL ELEMENTS
 
 
Period (P)341.5y Periastron (T)2000.5y Semi-major axis (a)4.393a
Eccentricity (e)0.49 Inclination (i)125.4° Longitude of periastron (ω)306.4°
Node (Ω)79.6° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 1.662 119.6
2001 1.720 116.0
2002 1.780 112.6
2003 1.841 109.5
2004 1.903 106.6
2005 1.965 103.8
2006 2.026 101.2
2007 2.086 98.8
2008 2.144 96.5
2009 2.201 94.3
2010 2.256 92.3
2011 2.309 90.3
2012 2.360 88.4
2013 2.408 86.6
2014 2.454 84.9
2015 2.497 83.2
2016 2.538 81.6
2017 2.577 80.0
2018 2.613 78.5
2019 2.646 77.0
2020 2.678 75.5
2021 2.706 74.1
2022 2.733 72.7
2023 2.758 71.4
2024 2.781 70.0
2025 2.801 68.7
2026 2.820 67.4
2027 2.837 66.1
2028 2.853 64.9
2029 2.867 63.6
2030 2.879 62.4

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02104-5049 ESG 1 2005 4 103 2.0 4.79 14.20 NVDP 021025.98-504925.2
02104-5049 ESG 1 2012 7 89 2.4 6.17 13.20 K0V DQ6 NO P 021025.98-504925.2

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