Orbit Fit and Astrometric record for 15KC173

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: 15KC173   
# Created Sun Apr 21 01:10:07 2019
# Orbit generated from Bernstein formalism
# Fitting   42 observations of   42
# Arc:   3.24y
# First observation: 2014/05/29
#  Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000361   0.028727  -0.000139  -0.007916   0.028165   0.000000
# Chi-squared of fit:    12.51 DOF:   78 RMS:  0.10
# Min/Max residuals:    -0.22    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.594244E-05  2.946678E-02 -5.519574E-06 -8.169819E-03  2.833009E-02  3.053436E-03
# Covariance matrix:
  1.4858E-13 -1.9104E-13 -2.1695E-14  4.5702E-14 -4.6151E-14 -1.7501E-12
 -1.9104E-13  4.4490E-13  6.2894E-14 -1.3415E-13  7.5078E-14  5.0953E-12
 -2.1695E-14  6.2894E-14  1.0655E-13 -7.3705E-14  1.1318E-14  8.0234E-13
  4.5702E-14 -1.3415E-13 -7.3705E-14  9.0481E-14 -2.1212E-14 -1.7136E-12
 -4.6151E-14  7.5078E-14  1.1318E-14 -2.1212E-14  1.1686E-13  8.7816E-13
 -1.7501E-12  5.0953E-12  8.0234E-13 -1.7136E-12  8.7816E-13  6.5031E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.324632 -130.012586   -0.311509    0.123157   -0.957694  2456806.878888
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           47.65695 +/-     0.027
Argument of Peri:       94.42263 +/-     0.049
Long of Asc Node:       74.48509 +/-     0.001
Inclination:            17.09104 +/-     0.000
Eccentricity:         0.13620137 +/-    0.0003
Semi-Major Axis:     39.41280909 +/-    0.0043
Time of Perihelion: 2444836.4492 +/-       6.5
Perihelion:          34.04473049 +/-    0.0110
Aphelion:            44.78088769 +/-    0.0114
Period (y)              247.4368 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.89361413 +/-    0.0003
Ecliptic Y          -27.75274728 +/-    0.0003
Ecliptic Z            4.50006405 +/-    0.0001
Ecliptic XDOT         0.00192291 +/-    0.0000
Ecliptic YDOT        -0.00213584 +/-    0.0000
Ecliptic ZDOT        -0.00074535 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.25718034 +/-    0.0003
Geocenter to KBO     35.29816232 +/-    0.0004
# Hcoef:  8.65

The following table shows the complete astrometric record for 15KC173. 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 (15KC173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.37811  15 18 09.267  -10 40 22.47  22.9r 15KC173   568  C~2lVE      
2014 05  29.41695  15 18 09.039  -10 40 22.27  23.8r 15KC173   568  C~2lVE      
2014 05  29.45582  15 18 08.855  -10 40 21.51  24.6r 15KC173   568  C~2lVE      
2014 05  30.48570  15 18 03.422  -10 40 09.06  24.4r 15KC173   568  C~2lVE      
2014 05  31.40206  15 17 58.663  -10 39 58.43  24.6r 15KC173   568  C~2lVE      
2014 06  21.38127  15 16 20.167  -10 37 18.47  24.2r 15KC173   568  C~2lVE      
2014 06  21.42015  15 16 20.003  -10 37 18.49  23.9r 15KC173   568  C~2lVE      
2014 07  19.29779  15 14 58.237  -10 38 43.42  23.2r 15KC173   568  C~2lVE      
2014 07  19.31397  15 14 58.201  -10 38 43.47  24.7r 15KC173   568  C~2lVE      
2015 02  23.62370  15 30 23.385  -11 57 55.01  24.2r 15KC173   568  C~2lVE      
2015 03  19.58308  15 29 51.843  -11 53 24.32  24.0r 15KC173   568  C~2lVE      
2015 03  21.64170  15 29 46.389  -11 52 53.41  24.3r 15KC173   568  C~2lVE      
2015 04  12.50040  15 28 25.919  -11 46 38.65  24.0r 15KC173   568  C~2lVE      
2015 04  12.54137  15 28 25.724  -11 46 37.88  24.0r 15KC173   568  C~2lVE      
2015 04  18.52304  15 27 57.773  -11 44 47.10  24.1r 15KC173   568  C~2lVE      
2015 05  17.39593  15 25 24.189  -11 36 19.43  24.2r 15KC173   568  C~2lVE      
2015 05  17.43761  15 25 23.954  -11 36 18.86  24.0r 15KC173   568  C~2lVE      
2015 05  17.48962  15 25 23.666  -11 36 17.86  24.1r 15KC173   568  C~2lVE      
2015 05  17.51475  15 25 23.511  -11 36 17.75  24.4r 15KC173   568  C~2lVE      
2015 05  21.31015  15 25 02.604  -11 35 20.81  24.2r 15KC173   568  C~2lVE      
2015 05  21.35129  15 25 02.382  -11 35 20.22  24.2r 15KC173   568  C~2lVE      
2015 05  21.39236  15 25 02.146  -11 35 19.56  24.0r 15KC173   568  C~2lVE      
2015 05  23.36603  15 24 51.328  -11 34 51.21  24.3r 15KC173   568  C~2lVE      
2015 05  24.40193  15 24 45.677  -11 34 36.97  23.9r 15KC173   568  C~2lVE      
2015 05  25.50079  15 24 39.694  -11 34 21.96  24.3r 15KC173   568  C~2lVE      
2015 06  18.35562  15 22 40.539  -11 30 32.24  24.0r 15KC173   568  C~2lVE      
2015 06  21.37129  15 22 27.553  -11 30 18.00  24.1r 15KC173   568  C~2lVE      
2015 07  10.40334  15 21 21.307  -11 30 17.36  24.0r 15KC173   568  C~2lVE      
2015 07  18.32993  15 21 02.961  -11 31 04.45  24.1r 15KC173   568  C~2lVE      
2016 02  05.62213  15 36 02.979  -12 49 13.68  24.4w 15KC173   568  C~2lVE      
2016 03  15.56425  15 36 04.154  -12 45 19.44  24.7w 15KC173   568  C~2lVE      
2016 03  17.58460  15 35 59.706  -12 44 53.66  24.5w 15KC173   568  C~2lVE      
2016 04  03.52641  15 35 07.494  -12 40 42.27  24.7w 15KC173   568  C~2lVE      
2016 04  08.57595  15 34 47.247  -12 39 18.14  24.9w 15KC173   568  C~2lVE      
2016 04  29.46161  15 33 07.049  -12 33 15.24  24.1w 15KC173   568  C~2lVE      
2016 05  04.39669  15 32 40.654  -12 31 50.96  24.1w 15KC173   568  C~2lVE      
2016 05  30.48629  15 30 17.590  -12 25 27.67  24.1w 15KC173   568  C~2lVE      
2016 07  05.34622  15 27 38.643  -12 22 04.98  24.8w 15KC173   568  C~2lVE      
2017 06  26.27819  15 34 18.662  -13 13 30.90  24.0w 15KC173   568  C~2lVE      
2017 08  20.27119  15 32 52.036  -13 20 43.48  24.5w 15KC173   568  C~2lVE      
2017 08  23.25675  15 32 56.220  -13 21 41.11  24.1w 15KC173   568  C~2lVE      
2017 08  24.24127  15 32 57.794  -13 22 00.66  24.4w 15KC173   568  C~2lVE      

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     0.10       0.00     0.20
  2   0.0001     -3.30    -0.10      -0.68    -0.14
  3   0.0002     -6.11     0.17      -0.65     0.22
  4   0.0030    -86.68    -0.21      -9.48     0.13
  5   0.0055   -157.18    -0.01     -17.48     0.06
  6   0.0630  -1600.64     0.01    -242.10     0.09
  7   0.0631  -1602.97     0.02    -242.75    -0.07
  8   0.1394  -2744.09     0.11    -640.81    -0.13
  9   0.1395  -2744.59    -0.03    -641.00    -0.06
 10   0.7399  11639.86    -0.13   -1743.80    -0.05
 11   0.8055  11122.30    -0.18   -1597.27    -0.11
 12   0.8111  11036.80     0.19   -1587.38    -0.08
 13   0.8710   9795.92     0.11   -1521.14    -0.03
 14   0.8711   9792.95     0.01   -1521.11    -0.04
 15   0.8875   9366.89     0.00   -1517.28    -0.08
 16   0.9665   7052.04     0.05   -1597.31     0.10
 17   0.9666   7048.55     0.06   -1597.64     0.02
 18   0.9668   7044.20     0.08   -1597.75     0.23
 19   0.9668   7041.97    -0.05   -1598.22    -0.10
 20   0.9772   6730.04     0.02   -1621.31    -0.12
 21   0.9773   6726.73     0.13   -1621.57    -0.09
 22   0.9775   6723.20     0.02   -1621.82    -0.05
 23   0.9829   6562.09    -0.12   -1634.88     0.07
 24   0.9857   6478.08    -0.05   -1642.27    -0.07
 25   0.9887   6389.15    -0.11   -1650.16    -0.03
 26   1.0540   4636.15     0.04   -1875.89    -0.05
 27   1.0623   4447.92     0.02   -1911.12     0.00
 28   1.1144   3506.42    -0.07   -2160.93     0.04
 29   1.1361   3257.95    -0.08   -2275.95     0.05
 30   1.6899  17251.23     0.11   -3502.37    -0.01
 31   1.7965  17210.09     0.11   -3270.15    -0.00
 32   1.8021  17140.19    -0.05   -3261.02    -0.05
 33   1.8485  16332.46    -0.00   -3204.05     0.00
 34   1.8623  16022.62    -0.22   -3195.15     0.02
 35   1.9195  14503.23     0.01   -3204.62     0.10
 36   1.9330  14105.98     0.03   -3218.53     0.07
 37   2.0044  11972.55    -0.10   -3368.23    -0.14
 38   2.1026   9661.12     0.01   -3756.43    -0.07
 39   3.0771  16125.06     0.04   -5294.94     0.20
 40   3.2276  15000.24     0.03   -6027.64    -0.04
 41   3.2358  15074.12     0.12   -6068.60    -0.04
 42   3.2385  15101.38    -0.11   -6081.94     0.05

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.

15KC173    quality flag:3

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

axisobj        39.151    39.164    39.137
ecceobj         0.130     0.131     0.130
incobj         17.098    17.098    17.098
qmin           32.369    32.345    32.388
qmax           46.779    46.808    46.821
amean          39.456    39.456    39.456
amin           39.133    39.144    39.128
amax           39.823    39.809    39.832
emean           0.154     0.154     0.154
emin            0.126     0.126     0.127
emax            0.176     0.177     0.176
imean          15.004    15.023    14.986
imin           14.149    14.156    14.150
imax           15.937    15.986    15.877
excite_mean     0.301     0.302     0.301
fracstop        1.000     1.000     1.000
cjmean          2.948     2.948     2.949

libcent 0       180.0     179.4     180.3
libamp  0        25.8      21.0      32.5
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       177.1     177.0     177.2
kozaiamp        180.0     180.0     180.0