Orbit Fit and Astrometric record for 09ME10

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 09ME10    
# Created Sat Oct 21 01:37:47 2017
# Orbit generated from Bernstein formalism
# Fitting    8 observations of    8
# Arc:  58.76d
# First observation: 2009/06/27
#  Last observation: 2009/08/25
Preliminary a, adot, b, bdot, g, gdot:
  -0.000033   0.067540   0.000008   0.010738   0.045650   0.000000
# Chi-squared of fit:     1.98 DOF:   10 RMS:  0.09
# Min/Max residuals:    -0.22    0.18
# Exact a, adot, b, bdot, g, gdot:
  2.163409E-05  6.197115E-02  2.990523E-06  1.091396E-02  4.484405E-02 -3.449908E-03
# Covariance matrix:
  4.9913E-13  1.8498E-11  2.9451E-14 -1.0818E-14  4.9897E-12  2.4088E-10
  1.8498E-11  5.5888E-08  8.4720E-11 -1.3700E-09  9.1845E-09 -5.6083E-08
  2.9451E-14  8.4720E-11  4.8945E-13 -4.9928E-12  1.3901E-11 -9.1175E-11
 -1.0818E-14 -1.3700E-09 -4.9928E-12  8.3142E-11 -2.1953E-10  2.4131E-09
  4.9897E-12  9.1845E-09  1.3901E-11 -2.1953E-10  1.5273E-09 -6.2599E-09
  2.4088E-10 -5.6083E-08 -9.1175E-11  2.4131E-09 -6.2599E-09  5.8551E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.435399  -62.051528    0.387098   -0.185489   -0.916969  2455009.765766
# Heliocentric elements and errors
Epoch:              2455000.5000  =  2009/06/18
Mean Anomaly:          341.24831 +/-     2.546
Argument of Peri:      338.32064 +/-     3.866
Long of Asc Node:      344.71072 +/-     0.120
Inclination:            14.68311 +/-     0.028
Eccentricity:         0.17937229 +/-    0.0091
Semi-Major Axis:     27.83263654 +/-    0.1890
Time of Perihelion: 2457794.1237 +/-     378.3
Perihelion:          22.84023275 +/-    0.2981
Aphelion:            32.82504032 +/-    0.3383
Period (y)              146.8384 +/-      1.50
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           10.34378279 +/-    0.0089
Ecliptic Y          -20.31916543 +/-    0.0168
Ecliptic Z           -4.42108262 +/-    0.0039
Ecliptic XDOT         0.00331203 +/-    0.0000
Ecliptic YDOT         0.00184335 +/-    0.0000
Ecliptic ZDOT         0.00069476 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   23.22516518 +/-    0.0153
Geocenter to KBO     22.29950137 +/-    0.0194
# Hcoef:  7.54

The following table shows the complete astrometric record for 09ME10. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (09ME10) followed by the observatory code and reference code for the source of the astrometry.

2009 06  27.26500  20 10 48.223  -31 45 23.67  20.9R 09ME10    807  C~0K92      
2009 06  27.32100  20 10 47.748  -31 45 25.73  20.8R 09ME10    807  C~0K92      
2009 06  27.37280  20 10 47.312  -31 45 26.96  20.7R 09ME10    807  C~0K92      
2009 07  18.05416  20 07 41.393  -31 54 19.54        09ME10    I11  C~0K92      
2009 07  18.11111  20 07 40.851  -31 54 20.79        09ME10    I11  C~0K92      
2009 07  18.15833  20 07 40.398  -31 54 22.01        09ME10    I11  C~0K92      
2009 08  24.98750  20 02 05.409  -31 59 53.76  21.3r 09ME10    304  C~0K92      
2009 08  25.02083  20 02 05.150  -31 59 53.55        09ME10    304  C~0K92      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00     0.04       0.00     0.18
  2   0.0002     -6.36    -0.06      -0.68    -0.22
  3   0.0003    -12.06     0.02      -0.66     0.04
  4   0.0569  -2440.63    -0.00      -9.53     0.07
  5   0.0571  -2447.64     0.02      -9.29     0.06
  6   0.0572  -2453.54    -0.02      -9.25    -0.13
  7   0.1608  -6696.22     0.04     544.29    -0.04
  8   0.1609  -6699.41    -0.04     545.16     0.04

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

09ME10    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        27.585    28.173    27.031
ecceobj         0.174     0.196     0.154
incobj         14.698    14.613    14.786
qmin           22.377    22.649    20.658
qmax           33.574    34.029    31.893
amean          27.998    28.062    26.410
amin           27.585    27.577    25.497
amax           28.519    28.439    27.463
emean           0.173     0.168     0.166
emin            0.147     0.126     0.124
emax            0.192     0.198     0.198
imean          15.773    16.125    15.409
imin           15.016    15.512    14.405
imax           17.305    17.404    16.240
excite_mean     0.323     0.325     0.314
fracstop        0.022     0.021     0.034
cjmean          2.902     2.899     2.922

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       129.4      92.3     125.0
kozaiamp        179.8     179.9     179.8