Orbit Fit and Astrometric record for 15KU174

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: 15KU174   
# Created Sat Dec  4 02:13:25 2021
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   3.24y
# First observation: 2014/05/30
#  Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000084   0.034583  -0.000021  -0.003497   0.027557   0.000000
# Chi-squared of fit:     7.41 DOF:     54 RMS:  0.09
# Min/Max residuals:    -0.21    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.981652E-05  3.476845E-02 -1.830752E-06 -3.535122E-03  2.754492E-02 -3.207829E-03
# Covariance matrix:
  2.1993E-13 -2.5500E-13 -1.0692E-14  2.1360E-14 -7.3175E-14 -1.8134E-12
 -2.5500E-13  5.2165E-13  2.7346E-14 -5.6986E-14  1.0349E-13  4.6862E-12
 -1.0692E-14  2.7346E-14  1.4245E-13 -7.7651E-14  6.0635E-15  2.7774E-13
  2.1360E-14 -5.6986E-14 -7.7651E-14  6.7317E-14 -9.0270E-15 -5.8117E-13
 -7.3175E-14  1.0349E-13  6.0635E-15 -9.0270E-15  1.5120E-13  9.6541E-13
 -1.8134E-12  4.6862E-12  2.7774E-13 -5.8117E-13  9.6541E-13  4.7643E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.276114 -127.321988   -0.282361    0.123501   -0.966854  2456807.886218
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          356.51003 +/-     0.008
Argument of Peri:      143.03177 +/-     0.032
Long of Asc Node:      103.22552 +/-     0.002
Inclination:             9.20253 +/-     0.000
Eccentricity:         0.53502526 +/-    0.0001
Semi-Major Axis:     79.38643138 +/-    0.0119
Time of Perihelion: 2459305.0912 +/-       5.8
Perihelion:          36.91268559 +/-    0.0080
Aphelion:           121.86017718 +/-    0.0192
Period (y)              707.3390 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.20152115 +/-    0.0003
Ecliptic Y          -29.58315222 +/-    0.0004
Ecliptic Z            4.59797786 +/-    0.0001
Ecliptic XDOT         0.00290775 +/-    0.0000
Ecliptic YDOT        -0.00188277 +/-    0.0000
Ecliptic ZDOT        -0.00038880 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.27213218 +/-    0.0004
Geocenter to KBO     36.30433861 +/-    0.0005
# Hcoef:  9.02

The following table shows the complete astrometric record for 15KU174. 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 (15KU174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38544  15 28 37.579  -11 23 43.99  24.4r 15KU174   568  C~2lVL      
2014 06  01.31224  15 28 28.154  -11 23 19.48  24.8r 15KU174   568  C~2lVL      
2014 06  01.35552  15 28 27.942  -11 23 18.94  24.6r 15KU174   568  C~2lVL      
2014 06  01.39843  15 28 27.724  -11 23 18.69  24.7r 15KU174   568  C~2lVL      
2014 06  22.30986  15 26 55.628  -11 20 17.08  25.0r 15KU174   568  C~2lVL      
2014 06  22.35268  15 26 55.471  -11 20 17.03  24.7r 15KU174   568  C~2lVL      
2015 02  25.61666  15 41 43.770  -12 29 26.37  24.9r 15KU174   568  C~2lVL      
2015 03  19.62043  15 41 25.601  -12 25 03.70  24.9r 15KU174   568  C~2lVL      
2015 03  22.53917  15 41 19.452  -12 24 19.01  24.8r 15KU174   568  C~2lVL      
2015 04  13.55184  15 40 09.393  -12 17 57.54  24.9r 15KU174   568  C~2lVL      
2015 04  13.59295  15 40 09.229  -12 17 56.78  24.5r 15KU174   568  C~2lVL      
2015 04  18.55634  15 39 48.535  -12 16 24.59  24.2r 15KU174   568  C~2lVL      
2015 05  21.32236  15 37 07.942  -12 06 50.35  24.4r 15KU174   568  C~2lVL      
2015 05  21.36353  15 37 07.730  -12 06 49.66  25.1r 15KU174   568  C~2lVL      
2015 05  21.40471  15 37 07.511  -12 06 49.33  24.5r 15KU174   568  C~2lVL      
2015 05  25.47177  15 36 46.653  -12 05 49.84  24.6r 15KU174   568  C~2lVL      
2015 06  20.36123  15 34 44.822  -12 01 24.46  24.4r 15KU174   568  C~2lVL      
2015 07  11.29546  15 33 34.022  -12 00 48.76  24.4r 15KU174   568  C~2lVL      
2015 07  18.36550  15 33 18.156  -12 01 17.71  24.3r 15KU174   568  C~2lVL      
2016 02  12.61871  15 49 06.202  -13 09 30.63  25.1w 15KU174   568  C~2lVL      
2016 04  03.55070  15 48 30.101  -13 00 24.16  24.9w 15KU174   568  C~2lVL      
2016 04  08.60024  15 48 12.829  -12 58 58.98  24.8w 15KU174   568  C~2lVL      
2016 04  29.50143  15 46 43.554  -12 52 52.34  24.9w 15KU174   568  C~2lVL      
2016 05  04.47406  15 46 19.218  -12 51 26.46  24.8w 15KU174   568  C~2lVL      
2016 05  30.45796  15 44 05.964  -12 44 55.84  24.7w 15KU174   568  C~2lVL      
2016 07  04.29818  15 41 35.398  -12 40 59.61  24.8w 15KU174   568  C~2lVL      
2016 07  05.36646  15 41 31.958  -12 40 59.23  24.8w 15KU174   568  C~2lVL      
2017 03  28.60754  15 56 38.530  -13 40 51.15  25.5w 15KU174   568  C~2lVL      
2017 08  19.27489  15 48 23.661  -13 26 39.46  25.2w 15KU174   568  C~2lVL      
2017 08  26.26334  15 48 33.250  -13 28 41.92  25.7w 15KU174   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     0.03       0.00    -0.04
     2   0.0053   -140.36    -0.06     -10.35     0.09
     3   0.0054   -143.51    -0.03     -10.59     0.11
     4   0.0055   -146.68    -0.03     -11.14    -0.18
     5   0.0628  -1504.00    -0.09    -169.40     0.01
     6   0.0629  -1506.25     0.11    -169.92    -0.10
     7   0.7426  12160.86    -0.03   -1054.77     0.06
     8   0.8028  11839.42     0.13    -861.52    -0.10
     9   0.8108  11741.04    -0.12    -839.19    -0.04
    10   0.8711  10650.29    -0.10    -709.85     0.10
    11   0.8712  10647.77    -0.03    -709.68     0.12
    12   0.8848  10330.46     0.01    -691.67     0.05
    13   0.9745   7902.12     0.02    -692.88     0.08
    14   0.9746   7898.93     0.05    -692.96     0.16
    15   0.9747   7895.73     0.07    -693.40    -0.13
    16   0.9859   7584.03     0.01    -708.69    -0.03
    17   1.0567   5783.51     0.07    -879.73     0.00
    18   1.1141   4766.20     0.02   -1095.72     0.03
    19   1.1334   4547.23     0.02   -1180.12    -0.05
    20   1.7063  19052.43     0.00   -1903.12     0.02
    21   1.8458  18408.88    -0.05   -1489.26    -0.09
    22   1.8596  18141.56    -0.05   -1463.79    -0.09
    23   1.9168  16777.35    -0.02   -1405.41    -0.06
    24   1.9304  16408.89    -0.05   -1403.60    -0.01
    25   2.0016  14411.15     0.12   -1474.06    -0.07
    26   2.0970  12204.61     0.05   -1758.69    -0.01
    27   2.0999  12155.42    -0.03   -1770.13     0.05
    28   2.8288  25988.40     0.13   -2264.28     0.29
    29   3.2221  18679.59    -0.02   -3051.08     0.05
    30   3.2413  18845.14    -0.13   -3138.93    -0.21

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.

15KU174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        78.398    78.429    78.366
ecceobj         0.530     0.530     0.530
incobj          9.197     9.197     9.197
qmin           36.064    36.020    36.049
qmax          125.511   126.915   125.566
amean          79.441    79.755    79.485
amin           78.147    78.218    78.212
amax           81.190    81.916    81.239
emean           0.535     0.536     0.534
emin            0.524     0.524     0.524
emax            0.547     0.550     0.547
imean           7.394     7.558     7.569
imin            6.812     6.953     6.978
imax            8.098     8.294     8.143
excite_mean     0.550     0.552     0.550
fracstop        1.000     1.000     1.000
cjmean          3.101     3.101     3.102

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       214.5     193.5     209.4
kozaiamp        180.0     180.0     179.9