Orbit Fit and Astrometric record for 60458

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: 60458     
# Created Mon Dec 11 02:36:28 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   39 observations of   39
# Arc:  15.19y
# First observation: 2000/02/05
#  Last observation: 2015/04/15
# Chi-squared of fit:   308.09 DOF:   72 RMS:  0.50
# Min/Max residuals:    -0.93    0.94
# Exact a, adot, b, bdot, g, gdot:
  1.572202E-05  2.191759E-02 -5.503661E-06 -7.852844E-03  2.317723E-02 -7.944973E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.002658  132.244090   -0.065924   -0.000163   -0.986587  2451579.672633
# Heliocentric elements and errors
Epoch:              2451580.5000  =  2000/02/06
Mean Anomaly:          327.40400 +/-     0.000
Argument of Peri:      251.30780 +/-     0.000
Long of Asc Node:      312.32764 +/-     0.000
Inclination:            19.70565 +/-     0.000
Eccentricity:         0.40097837 +/-    0.0000
Semi-Major Axis:     59.33992842 +/-    0.0000
Time of Perihelion: 2466698.0254 +/-       0.0
Perihelion:          35.54590088 +/-    0.0000
Aphelion:            83.13395597 +/-    0.0000
Period (y)              457.1184 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.71213863 +/-    0.0000
Ecliptic Y           32.62892197 +/-    0.0000
Ecliptic Z            0.00177061 +/-    0.0000
Ecliptic XDOT        -0.00129139 +/-    0.0000
Ecliptic YDOT        -0.00242819 +/-    0.0000
Ecliptic ZDOT        -0.00092757 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.13023950 +/-    0.0000
Geocenter to KBO     43.14605599 +/-    0.0000
# Hcoef:  6.91

The following table shows the complete astrometric record for 60458. 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 (60458) followed by the observatory code and reference code for the source of the astrometry.

2000 02  05.17189  08 58 49.88   +17 07 41.8   22.8R 60458     695  Cb4132      
2000 02  05.28382  08 58 49.33   +17 07 43.3         60458     695  Cb4132      
2000 03  30.16035  08 55 20.78   +17 18 01.0   23.5R 60458     695  Cb4132      
2000 03  30.24751  08 55 20.58   +17 18 01.3         60458     695  Cb4132      
2000 12  27.41163  09 06 16.215  +16 10 47.42  22.2R 60458     568  Cl5056      
2000 12  28.40486  09 06 12.572  +16 10 58.13  22.5R 60458     568  Cl5056      
2001 03  24.20123  09 00 06.02   +16 30 32.7   22.8R 60458     695   f4565      
2001 03  24.30328  09 00 05.72   +16 30 33.5         60458     695   f4565      
2002 02  06.19144  09 07 49.76   +15 31 49.1   22.4R 60458     695  Ce8743      
2002 02  06.28058  09 07 49.33   +15 31 50.4         60458     695  Ce8743      
2002 02  07.26681  09 07 44.53   +15 32 06.7         60458     695  Ce8743      
2003 03  03.31846  09 10 31.48   +14 48 45.7         60458     568  Ch5665      
2003 03  03.36878  09 10 31.26   +14 48 46.5         60458     568  Ch5665      
2006 01  19.27742  09 27 57.27   +12 00 25.4   23.1R 60458     250  S~06Fb      
2006 01  19.28182  09 27 57.24   +12 00 25.5         60458     250  S~06Fb      
2006 01  19.28622  09 27 57.22   +12 00 25.6         60458     250  S~06Fb      
2006 01  19.29062  09 27 57.20   +12 00 25.6         60458     250  S~06Fb      
2007 10  19.80321  09 39 00.67   +10 18 20.7   23.8R 60458     250  S~06Fb      
2007 10  19.81085  09 39 00.69   +10 18 20.5         60458     250  S~06Fb      
2007 10  19.81918  09 39 00.72   +10 18 20.3         60458     250  S~06Fb      
2007 10  19.82682  09 39 00.74   +10 18 20.1         60458     250  S~06Fb      
2007 10  25.73098  09 39 17.73   +10 15 56.1         60458     250  S~06Fb      
2007 10  25.73862  09 39 17.75   +10 15 55.9         60458     250  S~06Fb      
2007 10  25.74626  09 39 17.77   +10 15 55.7         60458     250  S~06Fb      
2007 10  25.75390  09 39 17.79   +10 15 55.5         60458     250  S~06Fb      
2007 12  06.17751  09 39 46.55   +10 06 05.2         60458     250  S~06Fb      
2007 12  06.18515  09 39 46.54   +10 06 05.2         60458     250  S~06Fb      
2007 12  06.24140  09 39 46.47   +10 06 04.9         60458     250  S~06Fb      
2007 12  06.24904  09 39 46.46   +10 06 04.9         60458     250  S~06Fb      
2008 01  18.31490  09 37 37.37   +10 10 09.5         60458     250  S~06Fb      
2008 01  18.32254  09 37 37.33   +10 10 09.7         60458     250  S~06Fb      
2008 01  18.38295  09 37 37.07   +10 10 10.6         60458     250  S~06Fb      
2008 01  18.39198  09 37 37.03   +10 10 10.7         60458     250  S~06Fb      
2008 01  18.44962  09 37 36.78   +10 10 11.5         60458     250  S~06Fb      
2008 01  18.45726  09 37 36.75   +10 10 11.6         60458     250  S~06Fb      
2008 01  18.46351  09 37 36.72   +10 10 11.6         60458     250  S~06Fb      
2015 04  15.16675  10 06 20.44   +03 41 14.5   23.2R 60458     695  C~1RSr      
2015 04  15.23755  10 06 20.24   +03 41 15.8         60458     695  C~1RSr      
2015 04  15.31670  10 06 20.05   +03 41 17.5         60458     695  C~1RSr      

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    -0.11       0.00     0.76
  2   0.0003      0.00    -0.11       0.00    -0.20
  3   0.1478      0.00     0.29       0.00     0.20
  4   0.1481      0.00     0.28       0.00     0.11
  5   0.8932      0.00    -0.14       0.00     0.31
  6   0.8959      0.00    -0.07       0.00     0.18
  7   1.1308      0.00     0.57       0.00    -0.20
  8   1.1311      0.00     0.44       0.00    -0.17
  9   2.0042      0.00    -0.39       0.00     0.25
 10   2.0044      0.00    -0.27       0.00     0.06
 11   2.0071      0.00    -0.58       0.00     0.03
 12   3.0723      0.00    -0.25       0.00    -0.14
 13   3.0724      0.00    -0.28       0.00    -0.10
 14   5.9551      0.00     0.86       0.00    -0.93
 15   5.9551      0.00     0.71       0.00    -0.89
 16   5.9551      0.00     0.70       0.00    -0.86
 17   5.9552      0.00     0.70       0.00    -0.93
 18   7.7033      0.00    -0.74       0.00    -0.60
 19   7.7033      0.00    -0.80       0.00    -0.60
 20   7.7033      0.00    -0.74       0.00    -0.58
 21   7.7034      0.00    -0.79       0.00    -0.59
 22   7.7195      0.00     0.94       0.00     0.73
 23   7.7196      0.00     0.94       0.00     0.71
 24   7.7196      0.00     0.94       0.00     0.69
 25   7.7196      0.00     0.94       0.00     0.67
 26   7.8330      0.00    -0.01       0.00     0.03
 27   7.8330      0.00    -0.01       0.00     0.06
 28   7.8332      0.00     0.00       0.00    -0.00
 29   7.8332      0.00    -0.00       0.00     0.03
 30   7.9511      0.00    -0.21       0.00     0.38
 31   7.9511      0.00    -0.31       0.00     0.47
 32   7.9513      0.00    -0.24       0.00     0.51
 33   7.9513      0.00    -0.25       0.00     0.48
 34   7.9515      0.00    -0.22       0.00     0.46
 35   7.9515      0.00    -0.17       0.00     0.45
 36   7.9515      0.00    -0.21       0.00     0.37
 37  15.1896      0.00     0.13       0.00    -0.23
 38  15.1898      0.00    -0.15       0.00    -0.23
 39  15.1900      0.00     0.02       0.00     0.02

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.

60458    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.314    59.314    59.315
ecceobj         0.401     0.401     0.401
incobj         19.709    19.709    19.709
qmin           34.843    34.836    34.844
qmax           85.495    85.388    85.397
amean          59.583    59.453    59.571
amin           58.916    58.775    58.852
amax           60.491    60.422    60.442
emean           0.396     0.395     0.396
emin            0.377     0.376     0.377
emax            0.414     0.414     0.414
imean          21.697    21.715    21.683
imin           21.027    21.026    21.027
imax           22.630    22.651    22.593
excite_mean     0.542     0.541     0.542
fracstop        1.000     1.000     1.000
cjmean          2.904     2.904     2.905

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       178.3     178.0     178.8
kozaiamp        180.0     180.0     179.9