Orbit Fit and Astrometric record for 15KG174

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: 15KG174   
# Created Thu Apr 18 01:10:33 2019
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   2.10y
# First observation: 2014/05/29
#  Last observation: 2016/07/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000129   0.038253   0.000068  -0.012122   0.031366   0.000000
# Chi-squared of fit:     5.74 DOF:   54 RMS:  0.08
# Min/Max residuals:    -0.12    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.932846E-05  3.765616E-02 -5.753203E-06 -1.192433E-02  3.128270E-02 -9.593213E-03
# Covariance matrix:
  1.5987E-13 -2.1885E-13 -1.0739E-14  4.0820E-14 -2.8026E-14 -1.6694E-12
 -2.1885E-13  6.8678E-13  4.9996E-14 -1.9019E-13  1.2764E-13  7.7787E-12
 -1.0739E-14  4.9996E-14  1.3748E-13 -1.1039E-13  1.6151E-14  6.7481E-13
  4.0820E-14 -1.9019E-13 -1.1039E-13  1.6655E-13 -4.9828E-14 -2.5508E-12
 -2.8026E-14  1.2764E-13  1.6151E-14 -4.9828E-14  2.5019E-13  2.0164E-12
 -1.6694E-12  7.7787E-12  6.7481E-13 -2.5508E-12  2.0164E-12  1.0429E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.239008 -129.599082   -0.304468    0.105233   -0.962084  2456806.875008
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          344.90754 +/-     0.011
Argument of Peri:      203.34770 +/-     0.034
Long of Asc Node:       69.27457 +/-     0.000
Inclination:            18.62739 +/-     0.000
Eccentricity:         0.45514023 +/-    0.0002
Semi-Major Axis:     55.44138844 +/-    0.0150
Time of Perihelion: 2463121.8100 +/-       3.8
Perihelion:          30.20778194 +/-    0.0149
Aphelion:            80.67499493 +/-    0.0252
Period (y)              412.8187 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.63883179 +/-    0.0003
Ecliptic Y          -25.42347565 +/-    0.0004
Ecliptic Z            3.47387724 +/-    0.0001
Ecliptic XDOT         0.00299382 +/-    0.0000
Ecliptic YDOT        -0.00154862 +/-    0.0000
Ecliptic ZDOT        -0.00112855 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.92996075 +/-    0.0004
Geocenter to KBO     31.96654612 +/-    0.0005
# Hcoef:  8.68

The following table shows the complete astrometric record for 15KG174. 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 (15KG174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.37423  15 18 37.322  -11 49 40.48  23.8r 15KG174   568  C~2lVJ      
2014 05  29.41307  15 18 37.106  -11 49 39.94  23.5r 15KG174   568  C~2lVJ      
2014 05  29.45191  15 18 36.886  -11 49 39.49  24.1r 15KG174   568  C~2lVJ      
2014 05  30.48182  15 18 31.036  -11 49 27.57  23.7r 15KG174   568  C~2lVJ      
2014 05  31.39817  15 18 25.899  -11 49 17.25  23.7r 15KG174   568  C~2lVJ      
2014 06  21.37736  15 16 39.892  -11 46 47.18  23.9r 15KG174   568  C~2lVJ      
2014 06  21.41627  15 16 39.697  -11 46 46.96  23.7r 15KG174   568  C~2lVJ      
2014 07  19.29388  15 15 13.101  -11 48 36.79  23.4r 15KG174   568  C~2lVJ      
2014 07  19.31003  15 15 13.068  -11 48 37.02  23.5r 15KG174   568  C~2lVJ      
2015 03  19.56666  15 32 31.723  -13 21 06.47  23.9r 15KG174   568  C~2lVJ      
2015 03  21.62515  15 32 26.126  -13 20 42.11  23.4r 15KG174   568  C~2lVJ      
2015 04  12.48402  15 31 01.347  -13 15 23.11  23.7r 15KG174   568  C~2lVJ      
2015 04  12.52502  15 31 01.150  -13 15 22.54  24.1r 15KG174   568  C~2lVJ      
2015 04  18.50669  15 30 31.146  -13 13 43.12  23.8r 15KG174   568  C~2lVJ      
2015 05  17.37006  15 27 44.472  -13 05 49.51  23.3r 15KG174   568  C~2lVJ      
2015 05  17.45892  15 27 43.921  -13 05 48.09  23.5r 15KG174   568  C~2lVJ      
2015 05  24.36087  15 27 02.495  -13 04 11.21  23.7r 15KG174   568  C~2lVJ      
2015 05  24.40713  15 27 02.210  -13 04 10.49  23.5r 15KG174   568  C~2lVJ      
2015 05  24.44802  15 27 01.967  -13 04 09.88  23.0r 15KG174   568  C~2lVJ      
2015 05  26.43568  15 26 50.178  -13 03 44.34  23.6r 15KG174   568  C~2lVJ      
2015 06  18.33508  15 24 45.397  -13 00 15.70  23.8r 15KG174   568  C~2lVJ      
2015 06  18.37614  15 24 45.201  -13 00 15.51  23.7r 15KG174   568  C~2lVJ      
2015 06  21.35078  15 24 31.199  -13 00 02.58  23.7r 15KG174   568  C~2lVJ      
2015 07  10.38241  15 23 19.078  -13 00 10.92  23.6r 15KG174   568  C~2lVJ      
2016 04  08.58811  15 39 25.355  -14 29 07.91  23.9w 15KG174   568  C~2lVJ      
2016 04  29.46970  15 37 36.948  -14 23 52.92  24.0w 15KG174   568  C~2lVJ      
2016 05  04.40478  15 37 08.047  -14 22 36.61  23.9w 15KG174   568  C~2lVJ      
2016 05  30.47820  15 34 30.159  -14 16 38.08  23.6w 15KG174   568  C~2lVJ      
2016 07  04.29009  15 31 37.107  -14 13 22.88  24.1w 15KG174   568  C~2lVJ      
2016 07  05.35837  15 31 33.249  -14 13 24.15  24.4w 15KG174   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    -0.06       0.00    -0.06
  2   0.0001     -3.20     0.05      -0.30     0.05
  3   0.0002     -6.44     0.12      -0.70     0.06
  4   0.0030    -92.48    -0.10     -11.44    -0.08
  5   0.0055   -168.00     0.03     -21.02    -0.08
  6   0.0630  -1710.03     0.22    -280.77     0.01
  7   0.0631  -1712.86    -0.11    -281.30     0.03
  8   0.1394  -2911.63    -0.07    -719.69    -0.03
  9   0.1395  -2912.04    -0.11    -720.04    -0.10
 10   0.8055  13223.24    -0.12   -2223.23     0.08
 11   0.8111  13137.71    -0.09   -2219.70    -0.04
 12   0.8709  11854.92     0.03   -2215.85     0.13
 13   0.8710  11851.98     0.12   -2216.01     0.05
 14   0.8874  11401.47     0.06   -2228.19    -0.12
 15   0.9664   8919.71     0.01   -2376.34    -0.09
 16   0.9667   8911.55    -0.08   -2376.98    -0.00
 17   0.9856   8300.26     0.07   -2435.08     0.06
 18   0.9857   8296.04    -0.02   -2435.43     0.15
 19   0.9858   8292.45     0.03   -2435.73     0.23
 20   0.9913   8119.02     0.05   -2454.31     0.01
 21   1.0540   6299.62    -0.03   -2712.72     0.00
 22   1.0541   6296.80     0.06   -2713.27     0.01
 23   1.0622   6095.37     0.01   -2752.64    -0.04
 24   1.1143   5077.26    -0.02   -3028.66    -0.08
 25   1.8623  20103.86    -0.00   -4734.92    -0.06
 26   1.9195  18485.16    -0.02   -4805.56    -0.02
 27   1.9330  18055.80     0.00   -4832.41    -0.05
 28   2.0044  15726.72    -0.02   -5039.83    -0.04
 29   2.0997  13227.08    -0.02   -5466.81    -0.05
 30   2.1026  13172.81     0.02   -5481.88     0.07

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.

15KG174    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        55.019    55.050    54.989
ecceobj         0.453     0.453     0.453
incobj         18.643    18.643    18.643
qmin           29.517    29.599    29.530
qmax           82.912    82.702    82.715
amean          55.461    55.461    55.461
amin           54.767    54.732    54.745
amax           56.479    56.450    56.399
emean           0.457     0.456     0.457
emin            0.447     0.446     0.447
emax            0.468     0.466     0.467
imean          17.333    17.431    17.323
imin           17.154    17.224    17.161
imax           17.532    17.640    17.502
excite_mean     0.545     0.545     0.545
fracstop        1.000     1.000     1.000
cjmean          2.848     2.848     2.848

libcent 0       178.9     181.2     181.0
libamp  0        79.3      79.3      70.2
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       206.2     193.8     207.1
kozaiamp        179.9     180.0     180.0