Orbit Fit and Astrometric record for 15KV174

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: 15KV174   
# Created Fri Feb 22 02:10:24 2019
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   38
# Arc:   3.24y
# First observation: 2014/05/30
#  Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000135   0.028132  -0.000073  -0.011322   0.026839   0.000000
# Chi-squared of fit:     7.24 DOF:   70 RMS:  0.08
# Min/Max residuals:    -0.21    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.660842E-05  2.831923E-02 -6.600010E-06 -1.141866E-02  2.692497E-02 -4.576164E-03
# Covariance matrix:
  1.9407E-13 -2.1038E-13 -3.9714E-14  7.2226E-14 -7.0587E-14 -1.7700E-12
 -2.1038E-13  3.8593E-13  9.1219E-14 -1.6788E-13  1.0620E-13  4.0823E-12
 -3.9714E-14  9.1219E-14  1.4235E-13 -9.9711E-14  2.4309E-14  1.0796E-12
  7.2226E-14 -1.6788E-13 -9.9711E-14  1.2062E-13 -4.1689E-14 -1.9937E-12
 -7.0587E-14  1.0620E-13  2.4309E-14 -4.1689E-14  1.1443E-13  1.0622E-12
 -1.7700E-12  4.0823E-12  1.0796E-12 -1.9937E-12  1.0622E-12  4.8372E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.844757 -126.636702   -0.270684    0.133542   -0.968857  2456807.886218
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          341.09117 +/-     0.022
Argument of Peri:      195.92575 +/-     0.047
Long of Asc Node:       71.95404 +/-     0.000
Inclination:            23.27094 +/-     0.000
Eccentricity:         0.29894189 +/-    0.0001
Semi-Major Axis:     52.02235777 +/-    0.0053
Time of Perihelion: 2463999.0614 +/-       8.4
Perihelion:          36.47069597 +/-    0.0085
Aphelion:            67.57401956 +/-    0.0103
Period (y)              375.2263 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.32338920 +/-    0.0003
Ecliptic Y          -30.46863171 +/-    0.0004
Ecliptic Z            5.06906785 +/-    0.0001
Ecliptic XDOT         0.00248597 +/-    0.0000
Ecliptic YDOT        -0.00147930 +/-    0.0000
Ecliptic ZDOT        -0.00121362 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.10992879 +/-    0.0003
Geocenter to KBO     37.14023899 +/-    0.0005
# Hcoef:  8.63

The following table shows the complete astrometric record for 15KV174. 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 (15KV174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38544  15 31 52.700  -11 00 35.24  24.2r 15KV174   568  C~2lVL      
2014 06  01.31224  15 31 42.906  -11 00 18.97  24.2r 15KV174   568  C~2lVL      
2014 06  01.35552  15 31 42.673  -11 00 18.69  24.0r 15KV174   568  C~2lVL      
2014 06  22.30986  15 30 05.734  -10 58 44.57  24.5r 15KV174   568  C~2lVL      
2014 06  22.35268  15 30 05.561  -10 58 44.45  24.2r 15KV174   568  C~2lVL      
2014 07  19.32576  15 28 42.774  -11 01 00.49  24.5r 15KV174   568  C~2lVL      
2015 02  25.61666  15 43 22.540  -12 20 54.46  24.2r 15KV174   568  C~2lVL      
2015 03  19.62043  15 42 59.546  -12 17 52.30  24.3r 15KV174   568  C~2lVL      
2015 03  22.53917  15 42 52.822  -12 17 18.80  24.7r 15KV174   568  C~2lVL      
2015 04  13.55184  15 41 38.717  -12 12 23.92  24.3r 15KV174   568  C~2lVL      
2015 04  13.59295  15 41 38.541  -12 12 23.31  24.5r 15KV174   568  C~2lVL      
2015 04  18.55634  15 41 16.978  -12 11 11.13  24.3r 15KV174   568  C~2lVL      
2015 05  21.32236  15 38 30.782  -12 03 50.34  24.0r 15KV174   568  C~2lVL      
2015 05  21.36353  15 38 30.560  -12 03 49.94  24.3r 15KV174   568  C~2lVL      
2015 05  21.40471  15 38 30.344  -12 03 49.45  24.1r 15KV174   568  C~2lVL      
2015 05  22.48134  15 38 24.596  -12 03 37.80  24.1r 15KV174   568  C~2lVL      
2015 05  25.47177  15 38 08.744  -12 03 06.56  24.4r 15KV174   568  C~2lVL      
2015 06  20.36123  15 36 01.756  -12 00 23.05  24.5r 15KV174   568  C~2lVL      
2015 06  20.40209  15 36 01.572  -12 00 23.02  24.4r 15KV174   568  C~2lVL      
2015 06  23.42230  15 35 48.768  -12 00 18.57  24.3r 15KV174   568  C~2lVL      
2015 07  11.29546  15 34 46.000  -12 01 04.75  24.6r 15KV174   568  C~2lVL      
2015 07  18.36550  15 34 28.265  -12 01 58.54  24.2r 15KV174   568  C~2lVL      
2016 02  06.63317  15 48 46.929  -13 20 54.88  24.6w 15KV174   568  C~2lVL      
2016 02  12.61871  15 48 59.214  -13 21 09.23  24.5w 15KV174   568  C~2lVL      
2016 03  15.62688  15 48 58.808  -13 18 58.82  24.6w 15KV174   568  C~2lVL      
2016 04  03.55069  15 48 09.404  -13 15 36.03  24.5w 15KV174   568  C~2lVL      
2016 04  08.60024  15 47 51.012  -13 14 32.48  24.2w 15KV174   568  C~2lVL      
2016 05  04.47406  15 45 52.071  -13 08 49.17  24.2w 15KV174   568  C~2lVL      
2016 05  30.46201  15 43 33.840  -13 04 01.41  24.5w 15KV174   568  C~2lVL      
2016 07  04.29818  15 40 56.368  -13 02 07.22  24.5w 15KV174   568  C~2lVL      
2016 07  05.36646  15 40 52.707  -13 02 10.47  24.7w 15KV174   568  C~2lVL      
2017 03  30.58199  15 54 23.750  -14 17 16.82  24.7w 15KV174   568  C~2lVL      
2017 07  28.31194  15 45 52.170  -14 06 11.68        15KV174   568  C~2lVL      
2017 08  19.27024  15 45 44.010  -14 11 33.68  24.5w 15KV174   568  C~2lVL      
2017 08  19.27489  15 45 43.998  -14 11 33.73  24.7w 15KV174   568  C~2lVL      
2017 08  25.27821  15 45 50.564  -14 13 30.85  24.7w 15KV174   568  C~2lVL      
2017 08  26.25868  15 45 52.000  -14 13 51.17  24.2w 15KV174   568  C~2lVL      
2017 08  26.26334  15 45 51.995  -14 13 51.24  24.5w 15KV174   568  C~2lVL      

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     0.00       0.00    -0.02
  2   0.0053   -143.86     0.03     -19.09     0.01
  3   0.0054   -147.26    -0.10     -19.65    -0.09
  4   0.0628  -1554.88    -0.04    -274.65    -0.04
  5   0.0629  -1557.38     0.01    -275.15     0.07
  6   0.1367  -2706.56     0.22    -704.34     0.15
  7   0.7426  10997.35    -0.02   -2282.78     0.02
  8   0.8028  10626.24     0.17   -2183.56    -0.08
  9   0.8108  10522.32    -0.00   -2173.83    -0.06
 10   0.8711   9394.55    -0.03   -2139.78     0.06
 11   0.8712   9391.89    -0.03   -2139.79     0.07
 12   0.8848   9066.96    -0.18   -2143.40    -0.04
 13   0.9745   6590.61    -0.02   -2287.35     0.07
 14   0.9746   6587.34     0.01   -2287.73     0.02
 15   0.9747   6584.15     0.10   -2288.00     0.08
 16   0.9777   6499.38    -0.05   -2296.59    -0.05
 17   0.9859   6265.81    -0.03   -2321.18     0.00
 18   1.0567   4415.92    -0.06   -2604.50     0.03
 19   1.0569   4413.29    -0.09   -2605.11    -0.04
 20   1.0651   4229.70    -0.06   -2645.57     0.01
 21   1.1141   3346.16     0.04   -2910.43     0.01
 22   1.1334   3106.35    -0.02   -3024.98    -0.05
 23   1.6899  16467.23    -0.13   -4708.47    -0.21
 24   1.7063  16646.28     0.04   -4681.88     0.05
 25   1.7940  16610.62     0.12   -4555.70    -0.10
 26   1.8458  15857.35    -0.03   -4521.09     0.03
 27   1.8596  15579.73     0.08   -4520.04     0.07
 28   1.9304  13800.86     0.02   -4581.51    -0.06
 29   2.0016  11761.24     0.03   -4765.89    -0.12
 30   2.0970   9490.32     0.00   -5189.58     0.07
 31   2.0999   9438.95     0.08   -5205.25    -0.04
 32   2.8342  22059.49    -0.01   -6925.38     0.06
 33   3.1620  14598.77     0.05   -7944.00     0.04
 34   3.2221  14557.19     0.16   -8285.94    -0.04
 35   3.2221  14557.03    -0.06   -8286.03    -0.06
 36   3.2386  14677.62    -0.02   -8378.73     0.08
 37   3.2413  14702.76    -0.00   -8393.84     0.04
 38   3.2413  14702.71    -0.17   -8393.92     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.

15KV174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        51.671    51.683    51.659
ecceobj         0.297     0.297     0.296
incobj         23.289    23.289    23.289
qmin           35.140    35.040    35.100
qmax           69.749    69.797    69.716
amean          52.044    52.034    52.041
amin           51.507    51.477    51.516
amax           52.687    52.717    52.705
emean           0.306     0.307     0.306
emin            0.288     0.289     0.287
emax            0.324     0.324     0.324
imean          21.536    21.513    21.549
imin           20.824    20.842    20.841
imax           22.159    22.173    22.178
excite_mean     0.478     0.478     0.478
fracstop        1.000     1.000     1.000
cjmean          2.907     2.907     2.907

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       187.7     193.6     190.5
kozaiamp        180.0     180.0     179.9