Orbit Fit and Astrometric record for 15KF173

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: 15KF173   
# Created Sat Apr 20 01:10:08 2019
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc:   2.99y
# First observation: 2014/05/29
#  Last observation: 2017/05/25
Preliminary a, adot, b, bdot, g, gdot:
  -0.000412   0.045060   0.000054  -0.010752   0.034010   0.000000
# Chi-squared of fit:     1.94 DOF:   46 RMS:  0.05
# Min/Max residuals:    -0.08    0.10
# Exact a, adot, b, bdot, g, gdot:
  2.026332E-05  4.477073E-02 -4.713669E-06 -1.072967E-02  3.534877E-02 -1.292682E-03
# Covariance matrix:
  1.7972E-13 -2.1129E-13 -1.1103E-14  3.3128E-14 -1.5122E-14 -1.0508E-12
 -2.1129E-13  4.9890E-13  3.4322E-14 -1.0114E-13  6.6920E-14  3.2103E-12
 -1.1103E-14  3.4322E-14  1.3442E-13 -7.3973E-14  1.2732E-14  2.5932E-13
  3.3128E-14 -1.0114E-13 -7.3973E-14  8.1621E-14 -2.3745E-14 -7.4703E-13
 -1.5122E-14  6.6920E-14  1.2732E-14 -2.3745E-14  2.4438E-13  7.7855E-13
 -1.0508E-12  3.2103E-12  2.5932E-13 -7.4703E-13  7.7855E-13  2.3742E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.502758 -127.574291   -0.269759    0.127764   -0.969678  2456806.855568
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          357.34166 +/-     0.017
Argument of Peri:      156.13013 +/-     0.030
Long of Asc Node:       80.57233 +/-     0.000
Inclination:            15.35025 +/-     0.000
Eccentricity:         0.25741650 +/-    0.0001
Semi-Major Axis:     39.37739039 +/-    0.0035
Time of Perihelion: 2457466.9636 +/-       4.3
Perihelion:          29.24100053 +/-    0.0034
Aphelion:            49.51378024 +/-    0.0049
Period (y)              247.1033 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.48696151 +/-    0.0002
Ecliptic Y          -23.16749357 +/-    0.0003
Ecliptic Z            3.69379905 +/-    0.0001
Ecliptic XDOT         0.00273740 +/-    0.0000
Ecliptic YDOT        -0.00212547 +/-    0.0000
Ecliptic ZDOT        -0.00083687 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.26039529 +/-    0.0003
Geocenter to KBO     28.28952744 +/-    0.0004
# Hcoef:  8.54

The following table shows the complete astrometric record for 15KF173. 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 (15KF173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.35479  15 27 51.920  -11 06 51.14  22.9r 15KF173   568  C~2lVE      
2014 05  29.39367  15 27 51.671  -11 06 50.55  23.1r 15KF173   568  C~2lVE      
2014 05  29.43250  15 27 51.417  -11 06 50.10  23.4r 15KF173   568  C~2lVE      
2014 05  30.46242  15 27 44.860  -11 06 36.43  23.0r 15KF173   568  C~2lVE      
2014 05  31.37870  15 27 39.059  -11 06 24.61  23.5r 15KF173   568  C~2lVE      
2014 06  21.35796  15 25 38.708  -11 03 37.38  23.2r 15KF173   568  C~2lVE      
2014 06  21.39681  15 25 38.509  -11 03 37.27  23.5r 15KF173   568  C~2lVE      
2014 07  19.27427  15 23 57.487  -11 05 49.97  23.2r 15KF173   568  C~2lVE      
2015 03  22.53917  15 43 44.132  -12 40 45.88  22.9r 15KF173   568  C~2lVE      
2015 04  18.55633  15 41 47.608  -12 32 24.91  22.8r 15KF173   568  C~2lVE      
2015 05  21.32236  15 38 20.288  -12 22 09.87  22.8r 15KF173   568  C~2lVE      
2015 05  21.36353  15 38 20.007  -12 22 09.21  22.8r 15KF173   568  C~2lVE      
2015 05  21.40471  15 38 19.728  -12 22 08.57  23.1r 15KF173   568  C~2lVE      
2015 05  22.48134  15 38 12.563  -12 21 51.61  22.9r 15KF173   568  C~2lVE      
2015 06  20.36123  15 35 14.945  -12 16 51.77  23.3r 15KF173   568  C~2lVF      
2015 06  20.40209  15 35 14.720  -12 16 51.59  23.0r 15KF173   568  C~2lVF      
2015 07  10.41516  15 33 46.029  -12 17 04.11  23.5r 15KF173   568  C~2lVF      
2015 07  18.33993  15 33 22.468  -12 18 06.23  23.3r 15KF173   568  C~2lVF      
2016 02  06.65340  15 52 59.072  -13 54 55.67  23.4w 15KF173   568  C~2lVF      
2016 02  12.63895  15 53 17.622  -13 55 12.13  23.3w 15KF173   568  C~2lVF      
2016 03  17.62205  15 53 27.682  -13 51 50.33  23.0w 15KF173   568  C~2lVF      
2016 07  05.40293  15 43 34.525  -13 28 34.81  23.2w 15KF173   568  C~2lVF      
2017 03  30.58668  16 02 33.290  -14 57 53.58  23.4w 15KF173   568  C~2lVF      
2017 05  21.54752  15 57 43.946  -14 44 42.10  22.9w 15KF173   568  C~2lVF      
2017 05  21.56169  15 57 43.844  -14 44 41.93  22.8w 15KF173   568  C~2lVF      
2017 05  25.53328  15 57 17.000  -14 43 48.35  23.2w 15KF173   568  C~2lVF      

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    -0.05       0.00    -0.02
  2   0.0001     -3.70    -0.01      -0.33     0.06
  3   0.0002     -7.43    -0.00      -0.82    -0.01
  4   0.0030   -104.33     0.07     -11.44     0.02
  5   0.0055   -189.98    -0.06     -21.10     0.03
  6   0.0630  -1947.71     0.03    -298.80    -0.01
  7   0.0631  -1950.57     0.03    -299.43    -0.01
  8   0.1394  -3357.68    -0.00    -799.31     0.02
  9   0.8136  14947.18    -0.01   -2113.01    -0.02
 10   0.8876  13163.21    -0.02   -2024.66    -0.06
 11   0.9773  10057.31    -0.04   -2145.01    -0.08
 12   0.9774  10053.15    -0.08   -2145.35    -0.07
 13   0.9775  10049.02    -0.07   -2145.70    -0.08
 14   0.9805   9942.76     0.01   -2154.22     0.03
 15   1.0596   7339.16     0.04   -2486.43     0.04
 16   1.0597   7335.92     0.01   -2487.05     0.03
 17   1.1145   6076.13     0.01   -2813.09    -0.03
 18   1.1362   5755.90     0.10   -2957.05     0.10
 19   1.6928  23934.73     0.10   -4610.34     0.06
 20   1.7092  24205.28     0.06   -4565.92    -0.06
 21   1.8022  24303.98    -0.05   -4334.90     0.07
 22   2.1028  15484.41    -0.05   -4944.46    -0.02
 23   2.8370  33080.10     0.02   -6505.43     0.09
 24   2.9793  28715.41     0.02   -6631.70    -0.01
 25   2.9793  28713.90    -0.04   -6631.85    -0.06
 26   2.9902  28314.59    -0.02   -6664.33    -0.01

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.

15KF173    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.108    39.119    39.096
ecceobj         0.253     0.253     0.253
incobj         15.349    15.349    15.349
qmin           27.356    27.319    27.376
qmax           51.941    52.109    51.972
amean          39.454    39.454    39.454
amin           39.075    39.089    39.072
amax           39.897    39.905    39.924
emean           0.255     0.256     0.255
emin            0.180     0.179     0.182
emax            0.306     0.307     0.306
imean          14.303    14.263    14.353
imin           11.431    11.365    11.523
imax           17.818    17.828    17.806
excite_mean     0.358     0.358     0.358
fracstop        1.000     1.000     1.000
cjmean          2.905     2.905     2.905

libcent 0       179.4     180.3     179.4
libamp  0        39.8      36.4      45.0
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        92.0      91.6      92.3
kozaiamp         62.0      62.2      61.7