Orbit Fit and Astrometric record for 15KZ173

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: 15KZ173   
# Created Fri Mar 29 01:17:59 2024
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     34
# Arc:   3.16y
# First observation: 2014/05/29
#  Last observation: 2017/07/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000410   0.037956   0.000155   0.013777   0.030330   0.000000
# Chi-squared of fit:    10.86 DOF:     62 RMS:  0.10
# Min/Max residuals:    -0.24    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.931337E-05  3.923106E-02  7.681110E-06  1.423541E-02  3.120173E-02  8.987360E-03
# Covariance matrix:
  1.9544E-13 -2.4180E-13  1.8354E-14 -5.3460E-14 -4.7268E-14 -1.6507E-12
 -2.4180E-13  5.9409E-13 -6.2334E-14  1.8107E-13  1.4737E-13  5.6002E-12
  1.8354E-14 -6.2334E-14  1.5831E-13 -1.1189E-13 -2.0184E-14 -6.7887E-13
 -5.3460E-14  1.8107E-13 -1.1189E-13  1.4053E-13  6.3639E-14  1.9820E-12
 -4.7268E-14  1.4737E-13 -2.0184E-14  6.3639E-14  1.8272E-13  1.8729E-12
 -1.6507E-12  5.6002E-12 -6.7887E-13  1.9820E-12  1.8729E-12  6.1109E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.428156 -129.244531   -0.298281    0.108625   -0.963641  2456806.863358
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:            7.37763 +/-     0.005
Argument of Peri:      343.39419 +/-     0.021
Long of Asc Node:      214.61612 +/-     0.000
Inclination:            20.88015 +/-     0.000
Eccentricity:         0.59338423 +/-    0.0002
Semi-Major Axis:     75.91649443 +/-    0.0265
Time of Perihelion: 2451849.2230 +/-       2.4
Perihelion:          30.86884391 +/-    0.0173
Aphelion:           120.96414495 +/-    0.0443
Period (y)              661.4735 +/-      0.35
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.53186969 +/-    0.0003
Ecliptic Y          -25.60305931 +/-    0.0003
Ecliptic Z            3.58847716 +/-    0.0001
Ecliptic XDOT         0.00225343 +/-    0.0000
Ecliptic YDOT        -0.00268000 +/-    0.0000
Ecliptic ZDOT         0.00132967 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.01441333 +/-    0.0003
Geocenter to KBO     32.04950817 +/-    0.0004
# Hcoef:  9.50

The following table shows the complete astrometric record for 15KZ173. 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 (15KZ173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.36258  15 20 12.755  -11 44 09.95  25.0r 15KZ173   568  C~2lVH      
2014 05  29.40143  15 20 12.526  -11 44 08.91  24.6r 15KZ173   568  C~2lVH      
2014 05  30.47018  15 20 06.812  -11 43 41.46  23.6r 15KZ173   568  C~2lVH      
2014 05  31.38647  15 20 01.982  -11 43 18.44  25.0r 15KZ173   568  C~2lVI      
2014 06  21.36572  15 18 22.578  -11 36 00.80  24.8r 15KZ173   568  C~2lVI      
2014 06  21.40460  15 18 22.416  -11 36 00.21  24.6r 15KZ173   568  C~2lVI      
2014 07  19.28215  15 17 04.126  -11 31 35.27  25.0r 15KZ173   568  C~2lVI      
2015 03  21.64577  15 35 15.962  -12 05 09.07  23.2r 15KZ173   568  C~2lVI      
2015 04  12.54547  15 33 59.956  -11 54 14.70  24.6r 15KZ173   568  C~2lVI      
2015 04  18.52716  15 33 32.525  -11 51 06.43  25.1r 15KZ173   568  C~2lVI      
2015 05  21.31423  15 30 36.461  -11 34 38.75  24.9r 15KZ173   568  C~2lVI      
2015 05  21.35538  15 30 36.214  -11 34 37.73  24.6r 15KZ173   568  C~2lVI      
2015 05  21.39649  15 30 35.979  -11 34 36.60  24.8r 15KZ173   568  C~2lVI      
2015 05  22.47313  15 30 29.974  -11 34 07.50  24.4r 15KZ173   568  C~2lVI      
2015 05  25.46359  15 30 13.408  -11 32 48.67  24.6r 15KZ173   568  C~2lVI      
2015 06  20.35311  15 28 03.377  -11 23 37.23  25.0r 15KZ173   568  C~2lVI      
2015 06  20.39396  15 28 03.194  -11 23 36.54  24.8r 15KZ173   568  C~2lVI      
2015 06  23.41352  15 27 50.506  -11 22 50.20  24.6r 15KZ173   568  C~2lVI      
2015 07  11.28721  15 26 50.764  -11 19 45.21  24.9r 15KZ173   568  C~2lVI      
2015 07  18.35664  15 26 35.403  -11 19 15.28  25.0r 15KZ173   568  C~2lVI      
2016 02  05.65108  15 44 17.057  -12 05 13.73  24.8w 15KZ173   568  C~2lVI      
2016 02  11.66311  15 44 33.245  -12 03 58.23  24.9w 15KZ173   568  C~2lVI      
2016 02  12.60253  15 44 35.400  -12 03 44.77  25.0w 15KZ173   568  C~2lVI      
2016 03  15.60009  15 44 44.204  -11 52 40.62  24.9w 15KZ173   568  C~2lVI      
2016 03  15.60912  15 44 44.180  -11 52 40.35  25.0w 15KZ173   568  C~2lVI      
2016 03  17.61396  15 44 40.700  -11 51 47.19  25.1w 15KZ173   568  C~2lVI      
2016 04  03.53046  15 43 54.784  -11 43 44.41  25.0w 15KZ173   568  C~2lVI      
2016 04  08.58000  15 43 35.875  -11 41 11.73  25.5w 15KZ173   568  C~2lVI      
2016 04  29.45756  15 41 58.704  -11 30 31.72  24.9w 15KZ173   568  C~2lVI      
2016 05  04.39265  15 41 32.523  -11 28 04.29  24.8w 15KZ173   568  C~2lVI      
2016 05  30.47009  15 39 08.591  -11 16 26.73  25.7w 15KZ173   568  C~2lVI      
2016 07  04.30222  15 36 30.419  -11 07 06.29  25.0w 15KZ173   568  C~2lVI      
2016 07  05.37053  15 36 26.887  -11 06 57.46  25.0w 15KZ173   568  C~2lVI      
2017 07  28.30588  15 44 44.296  -10 52 06.47  25.0w 15KZ173   568  C~2lVI      

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     0.12       0.00    -0.10
     2   0.0001     -3.52    -0.13       0.14    -0.12
     3   0.0030    -91.67    -0.17       5.10     0.09
     4   0.0055   -166.15     0.12       9.10     0.16
     5   0.0630  -1689.94     0.03      55.36    -0.02
     6   0.0631  -1692.39     0.04      55.31    -0.07
     7   0.1394  -2872.41    -0.01      13.06    -0.05
     8   0.8112  13167.35    -0.08    2104.57    -0.12
     9   0.8711  11921.46     0.08    2466.72     0.01
    10   0.8875  11483.51     0.01    2550.47     0.11
    11   0.9773   8727.01     0.11    2868.84     0.15
    12   0.9774   8723.23    -0.06    2868.92     0.02
    13   0.9775   8719.60    -0.08    2869.16     0.03
    14   0.9805   8626.73    -0.04    2875.43     0.09
    15   0.9886   8370.87     0.02    2891.27     0.02
    16   1.0595   6379.49    -0.03    2948.02    -0.06
    17   1.0596   6376.71    -0.08    2948.01    -0.04
    18   1.0679   6184.28     0.02    2946.10     0.09
    19   1.1168   5286.59     0.19    2904.44    -0.01
    20   1.1362   5060.23    -0.07    2876.53     0.00
    21   1.6900  20928.69     0.03    4016.21     0.11
    22   1.7065  21144.01    -0.07    4146.53    -0.19
    23   1.7091  21171.88     0.08    4167.21    -0.02
    24   1.7967  21141.27     0.12    4846.93    -0.12
    25   1.7967  21140.86    -0.00    4847.11    -0.11
    26   1.8022  21078.06    -0.11    4886.87    -0.05
    27   1.8485  20301.31    -0.16    5197.52     0.05
    28   1.8623  19992.40     0.09    5280.16     0.09
    29   1.9195  18439.84     0.07    5561.96     0.18
    30   1.9330  18027.65     0.06    5613.02    -0.01
    31   2.0044  15789.89    -0.14    5780.46    -0.24
    32   2.0998  13383.07     0.21    5758.03    -0.04
    33   2.1027  13330.26    -0.19    5753.89     0.11
    34   3.1648  20280.70     0.00    8398.64     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.

15KZ173    quality flag:3

Type:         4:1EEE    4:1EEE    4:1EEE

axisobj        74.752    74.842    74.662
ecceobj         0.587     0.587     0.586
incobj         20.925    20.925    20.924
qmin           29.713    29.712    29.257
qmax          125.098   125.136   125.835
amean          75.871    75.870    75.871
amin           74.621    74.528    74.550
amax           77.754    77.765    77.865
emean           0.594     0.594     0.600
emin            0.572     0.575     0.584
emax            0.609     0.610     0.616
imean          21.282    21.200    20.398
imin           20.314    20.277    19.440
imax           23.082    22.637    21.542
excite_mean     0.696     0.696     0.694
fracstop        1.000     1.000     1.000
cjmean          2.777     2.777     2.776

libcent 0       285.2     283.2     182.1
libamp  0        44.0      46.3     158.3
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        80.7      88.0     114.2
kozaiamp        180.0     180.0     180.0