11218-1313 FME   1

 
 
11h 21m 49.26s -13 13' 08.4" P.A. 171 sep 0.18 mag 11.90,15.70 Sp M8V+L7.5V
 
 
Coord 2000
11218-1313
Discov num
FME   1
Comp
Coord arcsec 2000
11 21 49.26 -13 13 08.4
Date first
1997
Date last
2009
Obs
24
Pa first
87
Pa last
59
P.A. Now (θ)
171°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.18"
Mag pri
11.90
Mag sec
15.70
delta mag (ΔM)
3.8
Spectral class
M8V+L7.5V (red/very deep red)
Pri motion ra
-293
Sec motion ra
Pri motion dec
-416
Sec motion dec
Notes
N O V (See Notes, Orbital solution, Proper motion indicates physical)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
59.4
Precise sep
0.22
Constellation
Crater
last precise pa
59.4
last precise sep
0.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.22y± 0.1 Periastron (T)53845d (2006.298y)± 15 Semi-major axis (a)0.2165a± 0.002
Eccentricity (e)0.345± 0.005 Inclination (i)42°± 1.1 Longitude of periastron (ω)38.5°± 2.4
Node (Ω)257.8°± 1.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.249 118.6
2001 0.223 133.4
2002 0.196 152.4
2003 0.174 176.9
2004 0.164 206.2
2005 0.159 238.0
2006 0.139 274.6
2007 0.114 329.2
2008 0.145 23.4
2009 0.199 52.0
2010 0.242 68.9
2011 0.267 81.6
2012 0.276 92.7
2013 0.270 103.7
2014 0.254 115.7
2015 0.229 129.9
2016 0.202 147.8
2017 0.178 171.0
2018 0.165 199.5
2019 0.160 230.8
2020 0.145 265.6
2021 0.116 315.4
2022 0.134 13.9
2023 0.188 47.1
2024 0.234 65.7
2025 0.263 79.0
2026 0.275 90.3
2027 0.273 101.2
2028 0.258 112.9
2029 0.235 126.5
2030 0.208 143.4

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

grafico orbita





wds11218-1313a.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
11218-1313 FME 1 2002 5 157 0.2 11.90 15.70 N D 112149.26-131308.4
11218-1313 FME 1 2009 11 59 0.2 11.90 15.70 M8+L7.5 NOD 112149.26-131308.4

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