Orbit Fit and Astrometric record for 15KR175

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: 15KR175   
# Created Mon Apr 22 01:10:08 2019
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   2.00y
# First observation: 2014/05/30
#  Last observation: 2016/05/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000013   0.018780   0.000002   0.004665   0.021558   0.000000
# Chi-squared of fit:    15.02 DOF:   52 RMS:  0.13
# Min/Max residuals:    -0.31    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.310468E-05  1.883040E-02  3.193997E-06  4.686272E-03  2.185200E-02 -1.678229E-03
# Covariance matrix:
  2.0119E-13 -2.5264E-13  5.3221E-15 -2.3907E-14 -4.7914E-14 -3.0220E-12
 -2.5264E-13  6.2663E-13 -2.0725E-14  9.5006E-14  2.2650E-13  1.1894E-11
  5.3221E-15 -2.0725E-14  1.6734E-13 -1.2617E-13 -1.2674E-14 -5.2334E-13
 -2.3907E-14  9.5006E-14 -1.2617E-13  1.4937E-13  7.1544E-14  2.5162E-12
 -4.7914E-14  2.2650E-13 -1.2674E-14  7.1544E-14  4.1915E-13  8.1635E-12
 -3.0220E-12  1.1894E-11 -5.2334E-13  2.5162E-12  8.1635E-12  3.0811E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.324550 -124.447260   -0.233529    0.125954   -0.979489  2456807.910378
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          236.80277 +/-     0.338
Argument of Peri:      159.76666 +/-     0.325
Long of Asc Node:      209.10698 +/-     0.002
Inclination:            15.62536 +/-     0.001
Eccentricity:         0.10055421 +/-    0.0006
Semi-Major Axis:     44.03276679 +/-    0.0078
Time of Perihelion: 2493323.0268 +/-      99.6
Perihelion:          39.60508653 +/-    0.0286
Aphelion:            48.46044705 +/-    0.0290
Period (y)              292.1946 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.04151064 +/-    0.0008
Ecliptic Y          -38.37487105 +/-    0.0011
Ecliptic Z            5.83443603 +/-    0.0002
Ecliptic XDOT         0.00210062 +/-    0.0000
Ecliptic YDOT        -0.00110445 +/-    0.0000
Ecliptic ZDOT         0.00055567 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.74218275 +/-    0.0010
Geocenter to KBO     45.76239811 +/-    0.0014
# Hcoef:  8.17

The following table shows the complete astrometric record for 15KR175. 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 (15KR175) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.40960  15 39 59.204  -12 01 38.69  24.6r 15KR175   568  C~2nvi      
2014 05  31.47886  15 39 54.646  -12 01 22.57  23.7r 15KR175   568  C~2nvi      
2014 06  01.33608  15 39 51.050  -12 01 09.95  25.0r 15KR175   568  C~2nvi      
2014 06  01.37892  15 39 50.897  -12 01 09.11  25.3r 15KR175   568  C~2nvi      
2014 06  01.42181  15 39 50.707  -12 01 08.51  24.1r 15KR175   568  C~2nvi      
2014 06  22.33318  15 38 29.614  -11 56 56.51  24.7r 15KR175   568  C~2nvi      
2014 07  19.34974  15 37 17.491  -11 54 48.15  24.3r 15KR175   568  C~2nvi      
2015 03  19.64496  15 48 49.045  -12 22 53.35        15KR175   568  C~2nvi      
2015 03  22.56564  15 48 43.799  -12 22 02.96  25.1r 15KR175   568  C~2nvi      
2015 04  13.57652  15 47 44.860  -12 15 08.45  24.8r 15KR175   568  C~2nvi      
2015 04  13.61766  15 47 44.740  -12 15 07.24  25.2r 15KR175   568  C~2nvi      
2015 04  18.58658  15 47 27.395  -12 13 29.67  24.8r 15KR175   568  C~2nvi      
2015 05  21.34720  15 45 12.627  -12 03 12.54  25.0r 15KR175   568  C~2nvi      
2015 05  21.38827  15 45 12.435  -12 03 11.88  24.8r 15KR175   568  C~2nvi      
2015 05  21.42959  15 45 12.264  -12 03 11.20  24.7r 15KR175   568  C~2nvi      
2015 05  22.50587  15 45 07.557  -12 02 53.02  25.0r 15KR175   568  C~2nvi      
2015 05  25.49667  15 44 54.582  -12 02 04.32  25.3r 15KR175   568  C~2nvi      
2015 06  20.38581  15 43 09.535  -11 56 27.12  25.2r 15KR175   568  C~2nvi      
2015 06  20.42660  15 43 09.390  -11 56 26.84  24.7r 15KR175   568  C~2nvi      
2015 06  23.44700  15 42 58.642  -11 55 59.41  24.4r 15KR175   568  C~2nvi      
2015 07  12.30961  15 42 02.884  -11 54 13.00  24.9r 15KR175   568  C~2nvi      
2015 07  18.39769  15 41 49.743  -11 54 03.37  24.8r 15KR175   568  C~2nvi      
2016 02  06.64530  15 53 14.309  -12 29 54.42  24.4w 15KR175   568  C~2nvi      
2016 02  12.63085  15 53 24.568  -12 29 10.16  25.2w 15KR175   568  C~2nvi      
2016 03  15.64428  15 53 25.908  -12 22 23.87  24.4w 15KR175   568  C~2nvi      
2016 04  03.55878  15 52 46.801  -12 16 46.40  24.4w 15KR175   568  C~2nvi      
2016 04  08.60833  15 52 32.096  -12 15 09.67  24.6w 15KR175   568  C~2nvi      
2016 04  09.55226  15 52 29.186  -12 14 51.52  25.3w 15KR175   568  C~2nvi      
2016 05  30.45392  15 49 04.440  -11 59 25.62  24.8w 15KR175   568  C~2nvi      

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     0.11       0.00     0.04
  2   0.0029    -68.78    -0.31       0.30    -0.10
  3   0.0053   -123.03    -0.24       0.44    -0.22
  4   0.0054   -125.41     0.15       0.74     0.09
  5   0.0055   -128.26     0.06       0.68     0.03
  6   0.0628  -1344.20     0.09     -28.71    -0.03
  7   0.1367  -2403.67     0.13    -149.31    -0.06
  8   0.8028   7858.81    -0.06     514.98     0.08
  9   0.8108   7772.56     0.06     547.06     0.00
 10   0.8711   6837.02    -0.12     758.92    -0.06
 11   0.8712   6835.03     0.10     759.71     0.39
 12   0.8848   6565.12    -0.07     798.06    -0.25
 13   0.9745   4499.21     0.14     955.90     0.10
 14   0.9746   4496.32    -0.00     955.90     0.04
 15   0.9747   4493.72     0.17     956.00     0.07
 16   0.9777   4422.31    -0.09     958.14     0.16
 17   0.9859   4225.80     0.15     962.64    -0.03
 18   1.0567   2647.68     0.00     941.94     0.08
 19   1.0569   2645.54     0.11     941.73    -0.01
 20   1.0651   2485.68    -0.07     932.57    -0.06
 21   1.1168   1664.52    -0.17     849.72    -0.09
 22   1.1334   1474.53    -0.11     815.05     0.05
 23   1.6899  11750.70    -0.15     960.30     0.01
 24   1.7063  11888.14    -0.12    1036.40    -0.07
 25   1.7939  11818.58     0.19    1437.86     0.15
 26   1.8457  11183.72     0.12    1642.30     0.03
 27   1.8595  10951.57    -0.08    1689.57    -0.12
 28   1.8621  10905.85     0.03    1697.94    -0.23
 29   2.0015   7766.32    -0.03    1938.75    -0.00

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.

15KR175    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.841    43.863    43.821
ecceobj         0.107     0.108     0.105
incobj         15.685    15.685    15.686
qmin           38.763    38.748    38.786
qmax           49.744    49.873    49.665
amean          44.138    44.160    44.118
amin           43.784    43.806    43.763
amax           44.517    44.547    44.504
emean           0.105     0.107     0.104
emin            0.093     0.094     0.092
emax            0.118     0.120     0.117
imean          16.355    16.355    16.356
imin           15.900    15.899    15.904
imax           16.757    16.763    16.760
excite_mean     0.301     0.301     0.300
fracstop        1.000     1.000     1.000
cjmean          2.992     2.992     2.992

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       181.1     181.1     181.1
kozaiamp        180.0     180.0     180.0