Orbit Fit and Astrometric record for 15KH162

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: 15KH162   
# Created Mon Dec 18 02:38:10 2017
# Orbit generated from Bernstein formalism
# Fitting   85 observations of   85
# Arc:   4.77y
# First observation: 2011/05/01
#  Last observation: 2016/02/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000483   0.012453   0.000188   0.005701   0.017142   0.000000
# Chi-squared of fit:    34.37 DOF:  164 RMS:  0.11
# Min/Max residuals:    -0.65    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.140293E-05  1.291941E-02  5.331625E-06  5.899347E-03  1.761527E-02  4.979061E-03
# Covariance matrix:
  2.8040E-13 -1.6804E-13  4.1829E-14 -5.3565E-14 -1.2994E-13 -1.8759E-12
 -1.6804E-13  1.6158E-13 -5.1487E-14  6.5859E-14  1.6591E-13  2.2950E-12
  4.1829E-14 -5.1487E-14  1.9982E-13 -7.0910E-14 -5.8426E-14 -8.0000E-13
 -5.3565E-14  6.5859E-14 -7.0910E-14  4.3421E-14  7.4346E-14  1.0239E-12
 -1.2994E-13  1.6591E-13 -5.8426E-14  7.4346E-14  2.2020E-13  2.5298E-12
 -1.8759E-12  2.2950E-12 -8.0000E-13  1.0239E-12  2.5298E-12  3.5773E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.765859 -128.671377    0.191444    0.269566   -0.955001  2455682.932036
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:           60.47315 +/-     0.038
Argument of Peri:      294.84656 +/-     0.011
Long of Asc Node:      201.01476 +/-     0.001
Inclination:            28.92527 +/-     0.000
Eccentricity:         0.33087077 +/-    0.0004
Semi-Major Axis:     61.57749470 +/-    0.0159
Time of Perihelion: 2426032.7644 +/-      14.5
Perihelion:          41.20330191 +/-    0.0259
Aphelion:            81.95168749 +/-    0.0317
Period (y)              483.2159 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.90271432 +/-    0.0009
Ecliptic Y          -43.30998598 +/-    0.0011
Ecliptic Z           15.42484099 +/-    0.0004
Ecliptic XDOT         0.00125611 +/-    0.0000
Ecliptic YDOT        -0.00163572 +/-    0.0000
Ecliptic ZDOT         0.00109271 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   57.72243993 +/-    0.0010
Geocenter to KBO     56.76893776 +/-    0.0015
# Hcoef:  3.95

The following table shows the complete astrometric record for 15KH162. 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 (15KH162) followed by the observatory code and reference code for the source of the astrometry.

2011 05  01.43127  15 31 55.323  -02 50 33.31  21.7w 15KH162   F51  C~1vYh      
2011 05  01.44535  15 31 55.267  -02 50 33.17  21.9w 15KH162   F51  C@0617      
2011 05  01.45958  15 31 55.222  -02 50 32.87  21.6w 15KH162   F51  C~1vYh      
2011 05  01.47364  15 31 55.168  -02 50 32.43  21.6w 15KH162   F51  C~1vYh      
2012 04  21.53179  15 35 35.833  -02 45 05.99  22.0r 15KH162   F51  C~1vYh      
2012 04  21.54278  15 35 35.804  -02 45 05.86  21.6r 15KH162   F51  C~1vYh      
2012 04  21.55395  15 35 35.769  -02 45 05.35  22.1g 15KH162   F51  C~1vYh      
2013 05  12.43917  15 37 36.618  -02 29 55.43  21.6w 15KH162   F51  C~1vYh      
2013 05  12.45243  15 37 36.568  -02 29 55.22  21.7w 15KH162   F51  C~1vYh      
2013 05  12.46567  15 37 36.525  -02 29 54.97  21.8w 15KH162   F51  C~1vYh      
2013 05  12.47890  15 37 36.474  -02 29 54.76  21.8w 15KH162   F51  C~1vYh      
2014 02  28.60195  15 43 26.662  -02 48 07.70  21.7w 15KH162   F51  C~1vYh      
2014 02  28.61427  15 43 26.675  -02 48 07.50  21.9w 15KH162   F51  C~1vYh      
2014 02  28.62650  15 43 26.655  -02 48 07.25  21.8w 15KH162   F51  C~1vYh      
2014 02  28.63876  15 43 26.653  -02 48 07.04  21.8w 15KH162   F51  C~1vYh      
2014 04  24.46346  15 41 44.346  -02 27 13.64  21.9w 15KH162   F51  C~1vYh      
2014 04  24.47590  15 41 44.307  -02 27 14.24  21.7w 15KH162   F51  C~1vYh      
2014 04  24.48842  15 41 44.281  -02 27 13.62  22.0w 15KH162   F51  C~1vYh      
2014 04  30.40878  15 41 25.433  -02 25 12.92  21.8w 15KH162   F51  C~1vYh      
2014 04  30.42075  15 41 25.386  -02 25 12.74  21.8w 15KH162   F51  C~1vYh      
2014 04  30.43271  15 41 25.351  -02 25 12.57  21.9w 15KH162   F51  C~1vYh      
2014 04  30.44471  15 41 25.312  -02 25 12.28  21.8w 15KH162   F51  C~1vYh      
2014 06  29.36229  15 38 14.012  -02 14 38.83  22.1w 15KH162   F51  C~1vYh      
2014 06  29.37536  15 38 13.990  -02 14 38.94  21.8w 15KH162   F51  C~1vYh      
2014 06  29.38842  15 38 13.953  -02 14 38.97  22.0w 15KH162   F51  C~1vYh      
2014 06  29.40153  15 38 13.917  -02 14 38.73  21.7w 15KH162   F51  C~1vYh      
2014 07  27.27738  15 37 24.912  -02 17 02.33  22.0w 15KH162   F51  C~1vYh      
2014 07  27.28951  15 37 24.895  -02 17 02.66  22.0w 15KH162   F51  C~1vYh      
2014 07  27.30163  15 37 24.869  -02 17 02.52  22.1w 15KH162   F51  C~1vYh      
2014 07  27.31374  15 37 24.863  -02 17 02.69  21.9w 15KH162   F51  C~1vYh      
2014 07  29.27061  15 37 23.102  -02 17 22.76  21.9w 15KH162   F51  C~1vYh      
2014 07  29.28203  15 37 23.089  -02 17 22.73  22.0w 15KH162   F51  C~1vYh      
2014 07  29.29344  15 37 23.079  -02 17 22.83  21.9w 15KH162   F51  C~1vYh      
2014 07  29.30483  15 37 23.063  -02 17 23.09  21.9w 15KH162   F51  C~1vYh      
2014 07  30.27142  15 37 22.281  -02 17 33.36  21.8w 15KH162   F51  C~1vYh      
2014 07  30.28295  15 37 22.273  -02 17 33.47  21.7w 15KH162   F51  C~1vYh      
2014 07  30.31718  15 37 22.235  -02 17 33.78  21.6w 15KH162   F51  C~1vYh      
2014 07  30.32865  15 37 22.237  -02 17 33.95  21.7w 15KH162   F51  C~1vYh      
2015 03  28.53796  15 45 59.490  -02 29 05.97  22.0w 15KH162   F51  C~1vYh      
2015 03  28.55084  15 45 59.464  -02 29 05.81  21.8w 15KH162   F51  C~1vYh      
2015 03  28.56464  15 45 59.433  -02 29 05.56  21.9w 15KH162   F51  C~1vYh      
2015 03  28.57747  15 45 59.425  -02 29 05.20  21.8w 15KH162   F51  C~1vYh      
2015 03  29.54348  15 45 57.528  -02 28 42.46  21.9w 15KH162   F51  C~1vYh      
2015 03  29.55611  15 45 57.498  -02 28 42.18  21.9w 15KH162   F51  C~1vYh      
2015 03  29.56875  15 45 57.468  -02 28 41.83  21.8w 15KH162   F51  C~1vYh      
2015 03  29.58136  15 45 57.456  -02 28 41.50  21.8w 15KH162   F51  C~1vYh      
2015 05  18.343428 15 43 31.793  -02 11 43.77  20.8R 15KH162   568  C~1mrc      
2015 05  18.427120 15 43 31.503  -02 11 42.59  20.9R 15KH162   568  C~1mrc      
2015 05  18.533206 15 43 31.132  -02 11 40.96  20.8R 15KH162   568  C~1mrc      
2015 05  21.37968  15 43 21.377  -02 10 59.93  21.9w 15KH162   F51  C~1vYh      
2015 05  21.39245  15 43 21.335  -02 10 59.80  21.8w 15KH162   F51  C~1vYh      
2015 05  21.40526  15 43 21.285  -02 10 59.61  21.7w 15KH162   F51  C~1vYh      
2015 05  21.41807  15 43 21.244  -02 10 59.55  21.8w 15KH162   F51  C~1vYh      
2015 05  22.43569  15 43 17.753  -02 10 45.49  21.9w 15KH162   F51  C~1vYh      
2015 05  22.44845  15 43 17.715  -02 10 45.41  21.9w 15KH162   F51  C~1vYh      
2015 05  22.46119  15 43 17.662  -02 10 45.03  22.0w 15KH162   F51  C~1vYh      
2015 05  22.47392  15 43 17.619  -02 10 45.06  21.8w 15KH162   F51  C~1vYh      
2015 06  11.425418 15 42 11.475  -02 07 21.98  21.2R 15KH162   568  C~1mrc      
2015 06  11.464252 15 42 11.350  -02 07 21.69  21.3R 15KH162   568  C~1mrc      
2015 06  12.382316 15 42 08.490  -02 07 15.83  21.2R 15KH162   568  C~1mrc      
2015 06  12.426397 15 42 08.349  -02 07 15.55  21.2R 15KH162   568  C~1mrc      
2015 06  12.494685 15 42 08.134  -02 07 15.15  21.2R 15KH162   568  C~1mrc      
2015 06  16.330556 15 41 56.456  -02 06 54.06  21.3R 15KH162   568  C~1mrc      
2015 06  16.400810 15 41 56.242  -02 06 53.63  21.3R 15KH162   568  C~1mrc      
2015 06  18.351101 15 41 50.476  -02 06 45.01  21.4R 15KH162   568  C~1mrc      
2015 06  18.435359 15 41 50.225  -02 06 44.70  21.2R 15KH162   568  C~1mrc      
2015 07  10.277291 15 40 55.875  -02 06 46.75  21.5R 15KH162   568  C~1mrc      
2015 07  10.308692 15 40 55.805  -02 06 46.88  21.4R 15KH162   568  C~1mrc      
2015 07  15.267534 15 40 46.590  -02 07 11.83  21.3R 15KH162   568  C~1mrc      
2015 07  15.317477 15 40 46.498  -02 07 12.17  21.3R 15KH162   568  C~1mrc      
2015 07  21.281597 15 40 37.220  -02 07 53.70  21.3R 15KH162   568  C~1mrc      
2015 07  21.312619 15 40 37.174  -02 07 53.95  21.2R 15KH162   568  C~1mrc      
2015 07  22.283392 15 40 35.860  -02 08 01.84  21.3R 15KH162   568  C~1mrc      
2015 07  22.320089 15 40 35.808  -02 08 02.12  21.2R 15KH162   568  C~1mrc      
2015 09  10.234029 15 40 48.132  -02 20 30.41  21.5R 15KH162   568  C~1mrc      
2015 09  10.273844 15 40 48.203  -02 20 31.21  21.2R 15KH162   568  C~1mrc      
2015 09  11.248478 15 40 50.033  -02 20 50.31  21.4R 15KH162   568  C~1mrc      
2015 10  13.223027 15 42 19.151  -02 31 34.89  21.3R 15KH162   568  C~1mrc      
2015 10  13.223756 15 42 19.157  -02 31 34.89  21.2R 15KH162   568  C~1mrc      
2016 02  04.592426 15 49 14.541  -02 39 04.13  20.6R 15KH162   568  C~1mrc      
2016 02  05.601267 15 49 16.037  -02 38 48.15  20.6R 15KH162   568  C~1mrc      
2016 02  05.602796 15 49 16.040  -02 38 48.11  20.7R 15KH162   568  C~1mrc      
2016 02  05.604281 15 49 16.044  -02 38 48.11  20.6R 15KH162   568  C~1mrc      
2016 02  05.648826 15 49 16.103  -02 38 47.37  20.5R 15KH162   568  C~1mrc      
2016 02  05.651052 15 49 16.111  -02 38 47.34  20.6R 15KH162   568  C~1mrc      

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    -0.01
  2   0.0000     -0.85    -0.04      -0.07    -0.17
  3   0.0001     -1.58     0.00       0.05    -0.14
  4   0.0001     -2.47    -0.12       0.27    -0.01
  5   0.9750   3119.03    -0.15    1138.05     0.06
  6   0.9750   3118.58    -0.04    1138.07    -0.02
  7   0.9750   3117.95    -0.10    1138.43     0.24
  8   2.0315   4647.38     0.14    2469.35     0.12
  9   2.0315   4646.61     0.09    2469.37     0.10
 10   2.0316   4645.92     0.14    2469.45     0.14
 11   2.0316   4645.13     0.07    2469.47     0.11
 12   2.8314  10007.20    -0.03    2708.45     0.05
 13   2.8314  10007.34     0.23    2708.69     0.05
 14   2.8315  10006.99    -0.00    2708.86    -0.02
 15   2.8315  10006.91     0.04    2709.06    -0.07
 16   2.9816   8208.64    -0.22    3545.94     0.18
 17   2.9816   8208.22    -0.01    3545.21    -0.65
 18   2.9817   8207.69     0.10    3545.71    -0.25
 19   2.9979   7903.67     0.06    3592.86     0.15
 20   2.9979   7902.95    -0.03    3592.86     0.06
 21   2.9980   7902.40     0.05    3592.89     0.02
 22   2.9980   7901.76     0.05    3593.03     0.07
 23   3.1620   4963.68    -0.10    3496.76     0.04
 24   3.1621   4963.39     0.08    3496.57    -0.03
 25   3.1621   4962.86     0.03    3496.40    -0.07
 26   3.1621   4962.27    -0.07    3496.50     0.15
 27   3.2385   4285.76     0.17    3175.12     0.01
 28   3.2385   4285.60     0.16    3174.74    -0.21
 29   3.2385   4285.18    -0.10    3174.78    -0.01
 30   3.2386   4285.14     0.00    3174.59    -0.04
 31   3.2439   4264.53     0.19    3148.59    -0.01
 32   3.2439   4264.33     0.11    3148.57     0.13
 33   3.2440   4264.21     0.11    3148.44     0.15
 34   3.2440   4264.04     0.06    3148.12    -0.01
 35   3.2467   4255.22     0.08    3135.26     0.09
 36   3.2467   4255.14     0.11    3135.13     0.11
 37   3.2468   4254.66    -0.05    3134.69     0.13
 38   3.2468   4254.73     0.13    3134.53     0.13
 39   3.9072  11952.04    -0.18    4382.74     0.17
 40   3.9072  11951.62    -0.15    4382.80     0.03
 41   3.9073  11951.11    -0.18    4382.93    -0.06
 42   3.9073  11950.90     0.06    4383.25     0.06
 43   3.9100  11917.64    -0.05    4398.30    -0.08
 44   3.9100  11917.14    -0.11    4398.46    -0.11
 45   3.9100  11916.61    -0.18    4398.69    -0.08
 46   3.9101  11916.36     0.01    4398.97     0.00
 47   4.0463   9543.01    -0.08    4846.84    -0.09
 48   4.0465   9538.49    -0.03    4846.91    -0.14
 49   4.0468   9532.69    -0.06    4847.11    -0.09
 50   4.0546   9380.51     0.05    4850.72     0.06
 51   4.0547   9379.86     0.10    4850.69     0.02
 52   4.0547   9379.09     0.02    4850.69     0.02
 53   4.0547   9378.48     0.10    4850.60    -0.08
 54   4.0575   9324.17     0.09    4851.28    -0.02
 55   4.0575   9323.60     0.21    4851.22    -0.08
 56   4.0576   9322.73     0.03    4851.39     0.09
 57   4.0576   9322.11     0.10    4851.20    -0.10
 58   4.1122   8309.06    -0.11    4802.66    -0.06
 59   4.1123   8307.17    -0.14    4802.48    -0.03
 60   4.1149   8264.09    -0.16    4797.55    -0.09
 61   4.1150   8261.97    -0.19    4797.29    -0.09
 62   4.1152   8258.74    -0.18    4796.88    -0.12
 63   4.1257   8083.58    -0.08    4773.97    -0.15
 64   4.1259   8080.36    -0.10    4773.59    -0.06
 65   4.1312   7994.31    -0.11    4760.54    -0.02
 66   4.1314   7990.59    -0.10    4759.91    -0.05
 67   4.1912   7200.31     0.01    4556.01    -0.02
 68   4.1913   7199.32    -0.08    4555.63    -0.04
 69   4.2049   7071.44    -0.04    4497.19    -0.02
 70   4.2050   7070.19    -0.07    4496.52    -0.07
 71   4.2214   6945.50    -0.05    4421.77    -0.02
 72   4.2214   6944.89    -0.07    4421.36    -0.03
 73   4.2241   6927.73    -0.08    4408.82     0.00
 74   4.2242   6927.04    -0.10    4408.36     0.02
 75   4.3609   7291.29    -0.02    3728.41     0.01
 76   4.3610   7292.52    -0.03    3727.90    -0.01
 77   4.3636   7323.86    -0.02    3716.17     0.11
 78   4.4512   8779.58    -0.02    3421.59     0.02
 79   4.4512   8779.67     0.02    3421.61     0.05
 80   4.7643  14945.75     0.18    4523.59     0.10
 81   4.7671  14963.67     0.10    4544.66     0.10
 82   4.7671  14963.70     0.11    4544.71     0.11
 83   4.7671  14963.76     0.14    4544.72     0.10
 84   4.7672  14964.44     0.09    4545.66     0.11
 85   4.7672  14964.55     0.16    4545.72     0.13

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.

15KH162    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        61.388    61.433    61.343
ecceobj         0.331     0.332     0.330
incobj         28.957    28.958    28.957
qmin           40.522    40.495    40.553
qmax           84.107    84.334    84.195
amean          61.863    61.911    61.841
amin           61.203    61.254    61.196
amax           62.682    62.751    62.718
emean           0.326     0.327     0.326
emin            0.312     0.313     0.312
emax            0.343     0.344     0.343
imean          29.224    29.226    29.213
imin           28.828    28.827    28.814
imax           29.672    29.660    29.638
excite_mean     0.587     0.588     0.587
fracstop        1.000     1.000     1.000
cjmean          2.851     2.850     2.851

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       166.3     166.3     166.4
kozaiamp        180.0     180.0     180.0