Orbit Fit and Astrometric record for 15KR173

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: 15KR173   
# Created Sun Apr 21 01:10:08 2019
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   39
# Arc:   2.10y
# First observation: 2014/05/29
#  Last observation: 2016/07/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000069   0.026323  -0.000004  -0.000947   0.025985   0.000000
# Chi-squared of fit:     9.24 DOF:   72 RMS:  0.09
# Min/Max residuals:    -0.21    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.537102E-05  2.663304E-02 -6.759377E-07 -9.616054E-04  2.640451E-02  2.800655E-03
# Covariance matrix:
  1.9325E-13 -2.5358E-13 -2.8676E-15  6.6628E-15 -9.2495E-14 -2.7636E-12
 -2.5358E-13  5.8707E-13  8.7871E-15 -2.1264E-14  2.6488E-13  8.6826E-12
 -2.8676E-15  8.7871E-15  1.4313E-13 -9.6426E-14  6.1387E-15  1.5664E-13
  6.6628E-15 -2.1264E-14 -9.6426E-14  8.9037E-14 -1.0493E-14 -3.6803E-13
 -9.2495E-14  2.6488E-13  6.1387E-15 -1.0493E-14  2.8052E-13  4.9634E-12
 -2.7636E-12  8.6826E-12  1.5664E-13 -3.6803E-13  4.9634E-12  1.5199E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.790744 -128.939759   -0.293118    0.114907   -0.964496  2456806.863358
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           77.20199 +/-     0.048
Argument of Peri:       17.25666 +/-     0.025
Long of Asc Node:      123.73299 +/-     0.005
Inclination:             6.94937 +/-     0.000
Eccentricity:         0.11497404 +/-    0.0005
Semi-Major Axis:     39.32803304 +/-    0.0044
Time of Perihelion: 2437481.8065 +/-      11.7
Perihelion:          34.80633020 +/-    0.0185
Aphelion:            43.84973588 +/-    0.0188
Period (y)              246.6389 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.01973904 +/-    0.0005
Ecliptic Y          -30.18897300 +/-    0.0006
Ecliptic Z            4.47818929 +/-    0.0001
Ecliptic XDOT         0.00195405 +/-    0.0000
Ecliptic YDOT        -0.00197273 +/-    0.0000
Ecliptic ZDOT        -0.00006455 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.83781834 +/-    0.0005
Geocenter to KBO     37.87231722 +/-    0.0008
# Hcoef:  8.57

The following table shows the complete astrometric record for 15KR173. 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 (15KR173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.36258  15 21 47.203  -11 27 47.22  24.5r 15KR173   568  C~2lVG      
2014 05  29.40143  15 21 46.992  -11 27 46.69  24.4r 15KR173   568  C~2lVG      
2014 05  29.44026  15 21 46.797  -11 27 46.16  24.1r 15KR173   568  C~2lVG      
2014 05  30.47018  15 21 41.753  -11 27 30.31  24.3r 15KR173   568  C~2lVG      
2014 05  31.38647  15 21 37.316  -11 27 16.66  25.0r 15KR173   568  C~2lVG      
2014 06  21.36572  15 20 04.928  -11 23 20.00  24.3r 15KR173   568  C~2lVG      
2014 06  21.40460  15 20 04.775  -11 23 19.73  24.4r 15KR173   568  C~2lVG      
2015 02  23.64434  15 33 19.389  -12 22 02.81  24.7r 15KR173   568  C~2lVG      
2015 03  19.58718  15 32 52.422  -12 16 36.61  24.4r 15KR173   568  C~2lVG      
2015 03  21.64578  15 32 47.506  -12 16 01.36  24.2r 15KR173   568  C~2lVG      
2015 04  12.50451  15 31 34.270  -12 09 02.26  24.3r 15KR173   568  C~2lVG      
2015 04  12.54547  15 31 34.101  -12 09 01.40  24.1r 15KR173   568  C~2lVG      
2015 05  17.40013  15 28 46.466  -11 57 26.31  24.2r 15KR173   568  C~2lVG      
2015 05  17.44183  15 28 46.245  -11 57 25.50  24.1r 15KR173   568  C~2lVG      
2015 05  17.49383  15 28 45.979  -11 57 24.50  23.9r 15KR173   568  C~2lVG      
2015 05  17.51894  15 28 45.860  -11 57 24.13  24.2r 15KR173   568  C~2lVG      
2015 05  24.38557  15 28 10.797  -11 55 25.55  24.7r 15KR173   568  C~2lVG      
2015 05  24.43166  15 28 10.553  -11 55 24.89  24.3r 15KR173   568  C~2lVG      
2015 05  24.47270  15 28 10.344  -11 55 24.15  24.1r 15KR173   568  C~2lVG      
2015 05  26.46061  15 28 00.310  -11 54 51.96  24.5r 15KR173   568  C~2lVG      
2015 06  18.35975  15 26 13.808  -11 50 03.80  24.2r 15KR173   568  C~2lVG      
2015 06  18.40072  15 26 13.619  -11 50 03.27  24.2r 15KR173   568  C~2lVG      
2015 06  21.37538  15 26 01.597  -11 49 38.93  24.4r 15KR173   568  C~2lVG      
2015 06  21.39181  15 26 01.541  -11 49 38.78  24.5r 15KR173   568  C~2lVG      
2015 07  10.41106  15 24 59.084  -11 48 23.41  24.7r 15KR173   568  C~2lVG      
2015 07  18.33583  15 24 41.563  -11 48 35.59  24.8r 15KR173   568  C~2lVG      
2015 08  11.33392  15 24 24.356  -11 51 50.74  24.5r 15KR173   568  C~2lVG      
2016 02  11.65084  15 38 58.176  -12 48 05.46  24.8w 15KR173   568  C~2lVG      
2016 03  15.58199  15 38 52.041  -12 42 23.12  24.6w 15KR173   568  C~2lVG      
2016 03  15.59592  15 38 52.015  -12 42 22.69  25.2w 15KR173   568  C~2lVG      
2016 03  17.60128  15 38 48.096  -12 41 51.38  24.9w 15KR173   568  C~2lVG      
2016 04  03.52641  15 38 00.919  -12 36 55.14  24.4w 15KR173   568  C~2lVG      
2016 04  08.57595  15 37 42.457  -12 35 18.26  24.7w 15KR173   568  C~2lVG      
2016 04  29.46161  15 36 10.378  -12 28 24.73  24.5w 15KR173   568  C~2lVG      
2016 05  04.39669  15 35 46.019  -12 26 48.54  24.5w 15KR173   568  C~2lVG      
2016 05  30.48629  15 33 33.374  -12 19 19.07  24.4w 15KR173   568  C~2lVG      
2016 07  03.36242  15 31 10.744  -12 14 12.23  22.7w 15KR173   568  C~2lVG      
2016 07  04.27794  15 31 07.887  -12 14 09.56  24.5w 15KR173   568  C~2lVG      
2016 07  05.34622  15 31 04.609  -12 14 07.04  24.6w 15KR173   568  C~2lVG      

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     0.02
  2   0.0001     -3.13    -0.10      -0.28    -0.10
  3   0.0002     -6.04    -0.09      -0.50    -0.17
  4   0.0030    -81.78    -0.06      -4.09     0.04
  5   0.0055   -148.34     0.20      -7.54     0.10
  6   0.0630  -1522.07    -0.05    -126.33    -0.06
  7   0.0631  -1524.32    -0.05    -126.65    -0.08
  8   0.7400  10659.81    -0.06    -611.59     0.16
  9   0.8055  10195.50    -0.06    -391.96     0.09
 10   0.8112  10116.80    -0.03    -375.46     0.04
 11   0.8710   8970.54     0.02    -233.27     0.04
 12   0.8711   8967.92     0.06    -233.05     0.07
 13   0.9666   6409.70    -0.02    -169.10    -0.10
 14   0.9667   6406.35    -0.08    -169.13    -0.05
 15   0.9668   6402.32    -0.01    -169.13     0.03
 16   0.9669   6400.53     0.18    -169.21    -0.01
 17   0.9857   5872.19     0.08    -182.69     0.17
 18   0.9858   5868.55     0.02    -182.94     0.05
 19   0.9859   5865.39     0.04    -182.99     0.12
 20   0.9914   5714.64     0.00    -188.59     0.10
 21   1.0541   4128.05     0.14    -301.32    -0.04
 22   1.0542   4125.23    -0.13    -301.50     0.06
 23   1.0623   3948.21    -0.13    -322.31    -0.12
 24   1.0624   3947.38     0.01    -322.38    -0.06
 25   1.1144   3040.71     0.11    -480.46    -0.00
 26   1.1361   2794.81    -0.10    -557.21    -0.09
 27   1.2018   2599.69     0.02    -809.89    -0.05
 28   1.7065  15872.21    -0.04    -926.49     0.08
 29   1.7966  15701.92     0.04    -614.74    -0.21
 30   1.7967  15701.44     0.01    -614.41     0.01
 31   1.8022  15637.89     0.04    -597.73     0.03
 32   1.8485  14892.39    -0.04    -475.76    -0.09
 33   1.8623  14605.29     0.02    -446.75     0.03
 34   1.9195  13190.61    -0.03    -371.20    -0.07
 35   1.9330  12819.69     0.04    -364.43    -0.05
 36   2.0044  10818.81    -0.07    -402.37     0.16
 37   2.0972   8712.32    -0.14    -619.12    -0.11
 38   2.0997   8671.00     0.03    -626.88     0.05
 39   2.1026   8623.73     0.10    -636.32     0.02

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.

15KR173    quality flag:3

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

axisobj        39.083    39.097    39.070
ecceobj         0.111     0.112     0.110
incobj          6.946     6.946     6.946
qmin           34.167    34.100    34.089
qmax           45.150    45.108    45.249
amean          39.459    39.459    39.459
amin           39.076    39.075    39.069
amax           39.876    39.873    39.894
emean           0.115     0.115     0.114
emin            0.097     0.097     0.095
emax            0.134     0.132     0.134
imean           5.709     5.710     5.701
imin            4.982     5.013     4.950
imax            6.462     6.434     6.487
excite_mean     0.152     0.152     0.152
fracstop        1.000     1.000     1.000
cjmean          3.026     3.026     3.026

libcent 0       179.1     178.9     179.5
libamp  0        67.6      59.8      74.0
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       181.7     182.4     180.3
kozaiamp        180.0     179.9     180.0