10121-0241 DEL   3

 
 
10h 12m 04.68s -02 41' 05.1" P.A. 60.1 sep 0.07 mag 11.00,12.00 Sp M2.5 dist. 12.33 pc (40.22 l.y.)
 
 
Coord 2000
10121-0241
Discov num
DEL   3
Comp
Coord arcsec 2000
10 12 04.68 -02 41 05.1
Date first
2000
Date last
2017
Obs
10
Pa first
253
Pa last
66
P.A. Now (θ)
60.1°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.07"
Mag pri
11.00
Mag sec
12.00
delta mag (ΔM)
1
Spectral class
M2.5 (red)
Pri motion ra
+505
Sec motion ra
Pri motion dec
-608
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
66.4
Precise sep
0.163
Cdsa2 id
DEL 3
Constellation
Sextans
HIP
49969
Tycho2
4907-00091-1
GL
Gl 381
Ra deg
10.2013
De deg
-2.68475
Distance
12.33
Distance ly
40.22
last precise pa
66.4
last precise sep
0.163
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.611y Periastron (T)2016.875y Semi-major axis (a)0.293a
Eccentricity (e)0.751 Inclination (i)93.3° Longitude of periastron (ω)274.1°
Node (Ω)68.9° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.199 254.5
2001 0.193 250.9
2002 0.143 68.0
2003 0.166 62.7
2004 0.098 53.6
2005 0.030 349.2
2006 0.090 267.6
2007 0.165 257.4
2008 0.209 253.1
2009 0.125 248.6
2010 0.177 65.8
2011 0.143 60.2
2012 0.067 44.4
2013 0.042 293.1
2014 0.121 262.0
2015 0.188 255.4
2016 0.206 251.7
2017 0.076 70.9
2018 0.175 63.9
2019 0.115 56.6
2020 0.039 20.6
2021 0.072 272.9
2022 0.150 258.7
2023 0.205 253.9
2024 0.173 250.1
2025 0.165 67.0
2026 0.157 61.7
2027 0.085 50.5
2028 0.031 320.1
2029 0.103 264.8
2030 0.176 256.5

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

grafico orbita





wds10121-0241a.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
10121-0241 DEL 3 2000 1 252 0.2 10.64   M2.5 D 101204.68-024105.1
10121-0241 DEL 3 2007 2 256 0.2 11.00 12.00 M2.5 D 101204.68-024105.1
10121-0241 DEL 3 2017 10 66 0.2 11.00 12.00 M2.5 O 101204.68-024105.1

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