Orbit Fit and Astrometric record for 94ES2

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: 94ES2     
# Created Mon Oct 23 01:36:55 2017
# Orbit generated from Bernstein formalism
# Fitting   36 observations of   36
# Arc:  20.94y
# First observation: 1994/03/13
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.004026   0.023200  -0.000077   0.000430   0.022036   0.000000
# Chi-squared of fit:   247.19 DOF:   66 RMS:  0.46
# Min/Max residuals:    -1.35    0.92
# Exact a, adot, b, bdot, g, gdot:
  1.797721E-05  2.053214E-02 -2.286822E-06  3.815886E-04  2.228320E-02 -2.491371E-03
# Covariance matrix:
  9.0427E-14 -3.2166E-14  6.5290E-16 -5.0905E-16 -8.3641E-15 -5.6604E-14
 -3.2166E-14  2.3122E-14 -5.1390E-16  3.9581E-16 -6.5309E-16  4.3997E-14
  6.5290E-16 -5.1390E-16  5.3880E-14 -4.3881E-15  6.1124E-17 -1.0402E-15
 -5.0905E-16  3.9581E-16 -4.3881E-15  1.4217E-15  1.0304E-17  8.0292E-16
 -8.3641E-15 -6.5309E-16  6.1124E-17  1.0304E-17  8.5524E-14  1.3266E-15
 -5.6604E-14  4.3997E-14 -1.0402E-15  8.0292E-16  1.3266E-15  8.9257E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.062955  157.762422   -0.248965    0.001091   -0.962457  2449424.883997
# Heliocentric elements and errors
Epoch:              2449420.5000  =  1994/03/09
Mean Anomaly:          277.98252 +/-     0.015
Argument of Peri:       98.77960 +/-     0.020
Long of Asc Node:      154.76194 +/-     0.001
Inclination:             1.06184 +/-     0.000
Eccentricity:         0.11723233 +/-    0.0000
Semi-Major Axis:     45.95874326 +/-    0.0025
Time of Perihelion: 2475347.6357 +/-       4.2
Perihelion:          40.57089251 +/-    0.0023
Aphelion:            51.34659400 +/-    0.0028
Period (y)              311.5734 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.52518782 +/-    0.0005
Ecliptic Y           17.11004986 +/-    0.0002
Ecliptic Z            0.04921183 +/-    0.0000
Ecliptic XDOT        -0.00066626 +/-    0.0000
Ecliptic YDOT        -0.00245488 +/-    0.0000
Ecliptic ZDOT         0.00004642 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.83827906 +/-    0.0005
Geocenter to KBO     44.87684845 +/-    0.0006
# Hcoef:  7.58

The following table shows the complete astrometric record for 94ES2. 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 (94ES2) followed by the observatory code and reference code for the source of the astrometry.

1994 03  13.3833   10 37 50.80   +08 42 59.5   24.3R 94ES2     568  A23286      
1994 03  13.5601   10 37 50.12   +08 43 03.2         94ES2     568  A23286      
1994 03  14.3950   10 37 46.69   +08 43 23.9         94ES2     568  A23286      
1994 03  14.4379   10 37 46.52   +08 43 25.0         94ES2     568  A23286      
1994 04  14.2542   10 35 59.20   +08 54 08.2   24.4R 94ES2     568  A23389      
1994 04  14.3089   10 35 59.04   +08 54 09.0         94ES2     568  A23389      
1994 04  14.3575   10 35 58.94   +08 54 09.5         94ES2     568  A23389      
1994 05  05.34069  10 35 17.80   +08 58 16.2   23.8V 94ES2     568  C23719      
1994 05  06.34071  10 35 16.64   +08 58 22.9   24.8V 94ES2     568  C23719      
1994 06  07.2775   10 35 21.79   +08 57 56.8         94ES2     568  A23582      
1994 06  07.3279   10 35 21.85   +08 57 56.2         94ES2     568  A23582      
1995 02  01.06138  10 45 05.18   +08 00 47.4         94ES2     950  C24881      
1995 02  01.21208  10 45 04.65   +08 00 50.8         94ES2     950  C24881      
1995 02  02.11502  10 45 01.30   +08 01 11.2         94ES2     950  C24881      
1995 02  02.17339  10 45 01.08   +08 01 12.8         94ES2     950  C24881      
1995 02  25.4227   10 43 26.77   +08 10 49.1   23.0R 94ES2     568  A24813      
1995 02  25.4335   10 43 26.73   +08 10 49.3         94ES2     568  A24813      
1995 02  26.4834   10 43 22.26   +08 11 16.1         94ES2     568  A24813      
1995 03  30.43877  10 41 13.06   +08 24 19.7         94ES2     413  C25264      
1995 03  30.55182  10 41 12.67   +08 24 21.5         94ES2     413  C25264      
1995 11  19.6096   10 50 53.78   +07 26 29.7   24.1R 94ES2     568  C26491      
1995 11  19.6357   10 50 53.84   +07 26 29.4         94ES2     568  C26491      
1995 11  19.6449   10 50 53.86   +07 26 29.4         94ES2     568  C26491      
1995 12  23.52292  10 51 09.07   +07 25 10.0         94ES2     568  C26491      
1995 12  23.55214  10 51 09.00   +07 25 10.2         94ES2     568  C26491      
1995 12  24.54028  10 51 08.04   +07 25 16.7         94ES2     568  C26491      
1998 05  29.30696  10 52 42.38   +07 18 59.7         94ES2     568  Ca1215      
1998 05  29.34761  10 52 42.38   +07 18 59.5         94ES2     568  Ca1215      
1998 05  30.31690  10 52 42.78   +07 18 56.9         94ES2     568  Ca1215      
1998 05  31.26480  10 52 43.20   +07 18 54.8   23.3R 94ES2     568  Ca1215      
1998 05  31.29180  10 52 43.21   +07 18 54.5         94ES2     568  Ca1215      
1999 01  23.42539  11 03 24.87   +06 13 52.8         94ES2     705  Ca3578      
1999 01  23.46148  11 03 24.75   +06 13 53.5         94ES2     705  Ca3578      
1999 01  23.49589  11 03 24.63   +06 13 54.2         94ES2     705  Ca3578      
2015 02  18.40184  12 16 11.39   -01 11 06.4   24.0R 94ES2     695  C~1M5z      
2015 02  18.49044  12 16 11.10   -01 11 04.3         94ES2     695  C~1M5z      

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    -0.70       0.00     0.53
  2   0.0005    -10.73     0.31      -0.32     0.25
  3   0.0028    -65.64    -0.15      -0.05     0.29
  4   0.0029    -68.39    -0.05       0.03     0.38
  5   0.0873  -1784.33    -0.69       5.48     0.51
  6   0.0874  -1786.83    -0.78       5.35     0.39
  7   0.0875  -1788.39    -0.21       5.26     0.32
  8   0.1450  -2446.09     0.46       8.10     0.20
  9   0.1477  -2464.54     0.51       7.95    -0.08
 10   0.2352  -2383.98    -0.01      12.02     0.00
 11   0.2353  -2382.94    -0.09      11.79    -0.21
 12   0.8889   6928.08     0.08      67.51    -1.35
 13   0.8893   6919.50     0.55      67.70    -1.15
 14   0.8918   6865.66     0.33      67.85    -1.28
 15   0.8920   6862.03     0.25      68.10    -1.02
 16   0.9556   5346.24    -0.11      75.06     0.22
 17   0.9556   5345.61     0.01      75.02     0.18
 18   0.9585   5273.99     0.25      74.92    -0.13
 19   1.0460   3201.48    -0.51      81.84     0.63
 20   1.0463   3195.44     0.02      81.34     0.16
 21   1.6871  12515.65     0.27     123.34    -0.08
 22   1.6872  12516.59     0.45     123.40    -0.02
 23   1.6872  12516.87     0.46     123.51     0.09
 24   1.7800  12757.20     0.07     136.06     0.88
 25   1.7801  12756.16    -0.48     135.85     0.67
 26   1.7828  12740.42     0.23     136.44     0.92
 27   4.2106  14187.88     0.26     322.17    -0.04
 28   4.2107  14187.96     0.14     321.98    -0.21
 29   4.2134  14194.48     0.61     321.85    -0.37
 30   4.2160  14201.09     0.08     322.29     0.04
 31   4.2160  14201.34     0.14     322.07    -0.17
 32   4.8653  24617.99    -0.40     384.90    -0.22
 33   4.8654  24616.05    -0.54     384.86    -0.26
 34   4.8655  24614.10    -0.77     384.81    -0.31
 35  20.9364 102490.35    -0.08    1868.07     0.02
 36  20.9366 102484.33     0.12    1868.27     0.22

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.

94ES2    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.623    45.630    45.616
ecceobj         0.112     0.112     0.112
incobj          1.069     1.069     1.069
qmin           40.030    40.008    40.020
qmax           52.007    52.010    51.989
amean          45.877    45.886    45.871
amin           45.497    45.501    45.485
amax           46.290    46.301    46.290
emean           0.110     0.110     0.110
emin            0.097     0.097     0.097
emax            0.124     0.124     0.124
imean           1.666     1.664     1.667
imin            1.117     1.117     1.117
imax            2.138     2.134     2.140
excite_mean     0.114     0.114     0.114
fracstop        1.000     1.000     1.000
cjmean          3.108     3.109     3.108

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       153.1     152.9     153.0
kozaiamp        179.9     179.9     179.9