Orbit Fit and Astrometric record for 15KM174

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: 15KM174   
# Created Mon Apr 22 01:10:07 2019
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   3.24y
# First observation: 2014/05/30
#  Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000451   0.026829  -0.000128  -0.006208   0.026525   0.000000
# Chi-squared of fit:     7.92 DOF:   62 RMS:  0.09
# Min/Max residuals:    -0.23    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.631301E-05  2.761056E-02 -3.527936E-06 -6.413201E-03  2.697252E-02  5.213392E-03
# Covariance matrix:
  5.2883E-13 -5.7139E-13 -7.2705E-14  1.0970E-13 -2.4264E-13 -4.9096E-12
 -5.7139E-13  7.7049E-13  1.0835E-13 -1.6503E-13  2.9515E-13  7.3511E-12
 -7.2705E-14  1.0835E-13  2.0918E-13 -1.2096E-13  4.5067E-14  1.1240E-12
  1.0970E-13 -1.6503E-13 -1.2096E-13  1.0034E-13 -6.5917E-14 -1.7135E-12
 -2.4264E-13  2.9515E-13  4.5067E-14 -6.5917E-14  2.3997E-13  2.9971E-12
 -4.9096E-12  7.3511E-12  1.1240E-12 -1.7135E-12  2.9971E-12  7.6291E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.230617 -125.637969   -0.253727    0.106689   -0.976745  2456807.894078
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           51.28103 +/-     0.014
Argument of Peri:       81.26875 +/-     0.022
Long of Asc Node:       79.13955 +/-     0.001
Inclination:            14.43714 +/-     0.000
Eccentricity:         0.21378305 +/-    0.0003
Semi-Major Axis:     42.27614964 +/-    0.0068
Time of Perihelion: 2442498.5316 +/-       2.0
Perihelion:          33.23822547 +/-    0.0145
Aphelion:            51.31407380 +/-    0.0158
Period (y)              274.8852 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.84208293 +/-    0.0004
Ecliptic Y          -30.89814723 +/-    0.0006
Ecliptic Z            4.02367642 +/-    0.0001
Ecliptic XDOT         0.00192479 +/-    0.0000
Ecliptic YDOT        -0.00212157 +/-    0.0000
Ecliptic ZDOT        -0.00058957 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.05209667 +/-    0.0005
Geocenter to KBO     37.07476677 +/-    0.0007
# Hcoef:  8.34

The following table shows the complete astrometric record for 15KM174. 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 (15KM174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.39330  15 34 13.815  -12 48 52.13  24.1r 15KM174   568  C~2lVJ      
2014 05  31.43190  15 34 08.482  -12 48 39.80  23.6r 15KM174   568  C~2lVJ      
2015 02  23.64017  15 45 46.319  -13 53 29.95  24.1r 15KM174   568  C~2lVJ      
2015 03  19.59955  15 45 25.226  -13 50 06.57  24.0r 15KM174   568  C~2lVJ      
2015 03  22.52231  15 45 18.687  -13 49 31.14  24.3r 15KM174   568  C~2lVJ      
2015 04  12.55771  15 44 09.688  -13 44 29.92  24.2r 15KM174   568  C~2lVJ      
2015 04  18.53999  15 43 44.155  -13 42 54.70  23.4r 15KM174   568  C~2lVJ      
2015 05  17.40845  15 41 19.492  -13 35 18.99  23.9r 15KM174   568  C~2lVJ      
2015 05  17.45019  15 41 19.268  -13 35 18.31  23.9r 15KM174   568  C~2lVJ      
2015 05  17.50220  15 41 18.971  -13 35 17.66  23.8r 15KM174   568  C~2lVJ      
2015 05  24.39373  15 40 42.382  -13 33 41.33  23.8r 15KM174   568  C~2lVJ      
2015 05  24.43983  15 40 42.143  -13 33 40.75  24.3r 15KM174   568  C~2lVJ      
2015 05  24.48091  15 40 41.917  -13 33 40.26  23.9r 15KM174   568  C~2lVJ      
2015 05  26.46900  15 40 31.428  -13 33 14.30  24.0r 15KM174   568  C~2lVJ      
2015 06  21.38354  15 38 25.183  -13 29 05.16  24.3r 15KM174   568  C~2lVJ      
2015 07  10.41926  15 37 15.878  -13 28 18.73  23.9r 15KM174   568  C~2lVJ      
2015 07  18.34401  15 36 55.466  -13 28 39.00  23.2r 15KM174   568  C~2lVJ      
2016 02  06.65340  15 51 07.388  -14 34 43.45  24.8w 15KM174   568  C~2lVJ      
2016 02  12.63894  15 51 19.846  -14 34 51.20  23.8w 15KM174   568  C~2lVJ      
2016 03  17.62205  15 51 17.557  -14 31 48.29  24.3w 15KM174   568  C~2lVJ      
2016 04  03.56283  15 50 32.929  -14 28 23.65  24.3w 15KM174   568  C~2lVJ      
2016 04  08.61237  15 50 14.894  -14 27 13.20  24.8w 15KM174   568  C~2lVJ      
2016 04  09.55630  15 50 11.316  -14 26 59.51  24.4w 15KM174   568  C~2lVJ      
2016 04  29.51356  15 48 42.804  -14 21 59.63  24.3w 15KM174   568  C~2lVJ      
2016 05  04.48619  15 48 17.857  -14 20 44.07  24.7w 15KM174   568  C~2lVJ      
2016 05  30.44581  15 46 01.346  -14 14 48.62  24.3w 15KM174   568  C~2lVJ      
2016 07  04.33057  15 43 24.606  -14 10 45.93  24.3w 15KM174   568  C~2lVJ      
2016 07  05.40293  15 43 20.929  -14 10 44.49  24.4w 15KM174   568  C~2lVJ      
2017 04  03.61140  15 56 24.145  -15 09 13.32  24.4w 15KM174   568  C~2lVJ      
2017 04  03.61609  15 56 24.142  -15 09 13.21  24.5w 15KM174   568  C~2lVJ      
2017 04  04.49990  15 56 21.250  -15 09 02.15  24.4w 15KM174   568  C~2lVJ      
2017 05  21.53807  15 52 43.106  -14 58 13.11  23.9w 15KM174   568  C~2lVJ      
2017 08  20.28063  15 48 05.441  -14 57 00.82  24.3w 15KM174   568  C~2lVJ      
2017 08  24.25065  15 48 09.409  -14 57 59.46  24.8w 15KM174   568  C~2lVJ      

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    -0.03       0.00    -0.05
  2   0.0028    -78.70     0.17      -6.57    -0.21
  3   0.7372  10740.44     0.05   -1427.33     0.05
  4   0.8028  10394.24    -0.23   -1298.60    -0.07
  5   0.8108  10293.19     0.02   -1285.66    -0.06
  6   0.8683   9243.46    -0.06   -1220.72     0.07
  7   0.8847   8858.75     0.09   -1212.87     0.06
  8   0.9638   6698.69     0.01   -1253.32    -0.01
  9   0.9639   6695.35     0.02   -1253.41     0.07
 10   0.9640   6690.99    -0.17   -1253.78    -0.09
 11   0.9829   6149.13    -0.09   -1283.33     0.17
 12   0.9830   6145.60     0.04   -1283.57     0.17
 13   0.9831   6142.28    -0.01   -1283.85     0.09
 14   0.9886   5987.34    -0.02   -1294.00     0.00
 15   1.0595   4137.54    -0.07   -1479.92    -0.00
 16   1.1116   3143.51    -0.11   -1671.52    -0.02
 17   1.1333   2858.79     0.07   -1761.18     0.17
 18   1.6900  15865.61     0.10   -2799.38     0.01
 19   1.7064  16044.78     0.07   -2767.04     0.03
 20   1.7994  15971.50     0.01   -2595.38    -0.09
 21   1.8458  15290.24     0.08   -2538.50    -0.08
 22   1.8596  15017.70     0.03   -2527.66    -0.08
 23   1.8622  14963.70    -0.01   -2525.81     0.08
 24   1.9168  13636.84     0.02   -2518.95    -0.11
 25   1.9304  13265.00     0.18   -2526.17    -0.08
 26   2.0015  11244.39    -0.02   -2625.37    -0.05
 27   2.0970   8964.16     0.03   -2906.69     0.00
 28   2.1000   8911.67    -0.01   -2917.51     0.01
 29   2.8452  20839.14    -0.16   -3827.16    -0.07
 30   2.8452  20839.07     0.01   -3827.06     0.02
 31   2.8477  20795.35    -0.05   -3825.21     0.03
 32   2.9764  17541.60    -0.01   -3874.37     0.01
 33   3.2249  13578.73     0.11   -4693.53     0.06
 34   3.2357  13648.23    -0.06   -4738.00    -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.

15KM174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        41.971    41.991    41.951
ecceobj         0.208     0.209     0.207
incobj         14.440    14.440    14.440
qmin           31.813    31.591    31.859
qmax           53.363    53.526    53.400
amean          42.326    42.326    42.327
amin           41.829    41.821    41.826
amax           42.884    42.850    42.873
emean           0.175     0.146     0.156
emin            0.063     0.059     0.068
emax            0.247     0.252     0.246
imean          14.644    15.533    15.022
imin           11.986    11.655    11.744
imax           17.543    17.830    17.913
excite_mean     0.313     0.312     0.310
fracstop        1.000     1.000     1.000
cjmean          2.967     2.967     2.968

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        73.4     174.2     122.6
kozaiamp         71.6     175.7     180.0