Orbit Fit and Astrometric record for 15KZ175

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: 15KZ175   
# Created Mon Dec  6 02:13:24 2021
# Orbit generated from Bernstein formalism
# Fitting     32 observations of     32
# Arc:   3.08y
# First observation: 2014/05/29
#  Last observation: 2017/06/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000014   0.013471   0.000006  -0.004219   0.018325   0.000000
# Chi-squared of fit:    14.39 DOF:     58 RMS:  0.12
# Min/Max residuals:    -0.25    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.196519E-05  1.348392E-02 -3.792483E-06 -4.223425E-03  1.845343E-02 -1.300499E-03
# Covariance matrix:
  2.0668E-13 -2.3739E-13 -1.9447E-14  4.7984E-14 -1.0429E-13 -4.4390E-12
 -2.3739E-13  4.9633E-13  5.6227E-14 -1.3970E-13  2.8038E-13  1.2905E-11
 -1.9447E-14  5.6227E-14  1.6492E-13 -1.1362E-13  4.0652E-14  1.7488E-12
  4.7984E-14 -1.3970E-13 -1.1362E-13  1.2765E-13 -9.4769E-14 -4.3380E-12
 -1.0429E-13  2.8038E-13  4.0652E-14 -9.4769E-14  3.3964E-13  8.8717E-12
 -4.4390E-12  1.2905E-11  1.7488E-12 -4.3380E-12  8.8717E-12  4.0087E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.931168 -128.170778   -0.279926    0.117739   -0.968065  2456806.855568
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          209.75993 +/-     0.324
Argument of Peri:      317.58936 +/-     0.321
Long of Asc Node:       72.77234 +/-     0.001
Inclination:            18.70237 +/-     0.001
Eccentricity:         0.19380620 +/-    0.0004
Semi-Major Axis:     46.92221270 +/-    0.0092
Time of Perihelion: 2505795.2377 +/-     104.7
Perihelion:          37.82839698 +/-    0.0211
Aphelion:            56.01602842 +/-    0.0226
Period (y)              321.4222 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.62930396 +/-    0.0010
Ecliptic Y          -43.22995070 +/-    0.0013
Ecliptic Z            6.53938798 +/-    0.0002
Ecliptic XDOT         0.00163916 +/-    0.0000
Ecliptic YDOT        -0.00114885 +/-    0.0000
Ecliptic ZDOT        -0.00064519 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   55.15906378 +/-    0.0012
Geocenter to KBO     54.19046280 +/-    0.0017
# Hcoef:  7.34

The following table shows the complete astrometric record for 15KZ175. 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 (15KZ175) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.35479  15 24 56.803  -11 31 13.49  24.7r 15KZ175   568  C~2nvj      
2014 05  29.39367  15 24 56.667  -11 31 13.17  25.4r 15KZ175   568  C~2nvj      
2014 05  29.43250  15 24 56.523  -11 31 12.53  25.1r 15KZ175   568  C~2nvj      
2014 05  31.37870  15 24 49.400  -11 30 55.06  24.7r 15KZ175   568  C~2nvj      
2014 06  21.35796  15 23 39.389  -11 28 36.47  24.9r 15KZ175   568  C~2nvj      
2014 06  21.39681  15 23 39.281  -11 28 36.10  24.7r 15KZ175   568  C~2nvj      
2015 02  23.62370  15 32 02.409  -12 14 43.74  24.7r 15KZ175   568  C~2nvj      
2015 04  12.50040  15 30 37.253  -12 06 28.85  24.5r 15KZ175   568  C~2nvj      
2015 04  12.54137  15 30 37.130  -12 06 27.97  24.5r 15KZ175   568  C~2nvj      
2015 04  18.52716  15 30 17.720  -12 05 08.62  24.2r 15KZ175   568  C~2nvj      
2015 05  24.38556  15 28 05.099  -11 57 45.79  24.4r 15KZ175   568  C~2nvj      
2015 05  24.43166  15 28 04.918  -11 57 45.17  24.8r 15KZ175   568  C~2nvj      
2015 05  24.47270  15 28 04.763  -11 57 44.82  24.4r 15KZ175   568  C~2nvj      
2015 05  26.46061  15 27 57.273  -11 57 24.83  24.7r 15KZ175   568  C~2nvj      
2015 06  18.35975  15 26 37.355  -11 54 30.09  25.0r 15KZ175   568  C~2nvj      
2015 06  18.40072  15 26 37.220  -11 54 29.83  24.8r 15KZ175   568  C~2nvj      
2015 06  21.37538  15 26 28.079  -11 54 16.00  25.1r 15KZ175   568  C~2nvj      
2015 06  21.39181  15 26 28.045  -11 54 15.84  24.7r 15KZ175   568  C~2nvj      
2015 07  10.41106  15 25 39.708  -11 53 44.95  25.3r 15KZ175   568  C~2nvj      
2015 07  18.33583  15 25 25.529  -11 54 02.59  24.7r 15KZ175   568  C~2nvj      
2015 08  11.33392  15 25 07.733  -11 56 47.08  24.7r 15KZ175   568  C~2nvj      
2016 02  11.63450  15 34 46.555  -12 40 37.98  24.9w 15KZ175   568  C~2nvj      
2016 03  15.56425  15 34 32.722  -12 37 12.54  24.9w 15KZ175   568  C~2nvj      
2016 04  03.52641  15 33 51.375  -12 33 41.46  24.7w 15KZ175   568  C~2nvj      
2016 04  08.57595  15 33 37.019  -12 32 38.60  24.8w 15KZ175   568  C~2nvj      
2016 04  29.46161  15 32 26.954  -12 28 09.36  24.8w 15KZ175   568  C~2nvj      
2016 05  04.39669  15 32 08.649  -12 27 06.98  25.0w 15KZ175   568  C~2nvj      
2016 05  30.48629  15 30 29.555  -12 22 18.77  24.5w 15KZ175   568  C~2nvj      
2016 07  03.36242  15 28 42.383  -12 19 18.91  24.4w 15KZ175   568  C~2nvj      
2016 07  04.27794  15 28 40.180  -12 19 18.13  25.0w 15KZ175   568  C~2nvj      
2016 07  05.34622  15 28 37.672  -12 19 17.73  24.6w 15KZ175   568  C~2nvj      
2017 06  26.27819  15 31 51.948  -12 45 08.99  25.3w 15KZ175   568  C~2nvj      

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    -0.08       0.00     0.04
     2   0.0001     -2.02     0.06      -0.19     0.03
     3   0.0002     -4.22     0.01      -0.10     0.30
     4   0.0055   -109.95     0.07      -9.46    -0.15
     5   0.0630  -1140.84    -0.02    -134.13    -0.21
     6   0.0631  -1142.47     0.06    -134.17     0.03
     7   0.7400   6701.64     0.12    -980.92    -0.06
     8   0.8710   5368.61     0.17    -807.33    -0.25
     9   0.8711   5366.65     0.19    -806.92     0.10
    10   0.8875   5071.00    -0.16    -800.06     0.05
    11   0.9857   3075.44    -0.02    -851.92     0.12
    12   0.9858   3072.71    -0.11    -851.98     0.24
    13   0.9859   3070.42    -0.06    -852.21     0.18
    14   0.9914   2958.96    -0.14    -860.12    -0.04
    15   1.0541   1779.34     0.10    -982.76    -0.17
    16   1.0542   1777.36     0.03    -983.00    -0.14
    17   1.0623   1643.98    -0.23   -1003.08    -0.08
    18   1.0624   1643.46    -0.02   -1003.05     0.06
    19   1.1145    948.74     0.01   -1150.45     0.02
    20   1.1362    751.67     0.17   -1219.64    -0.04
    21   1.2019    540.04    -0.15   -1444.34    -0.11
    22   1.7064   9416.23     0.01   -1904.24    -0.04
    23   1.7966   9169.49     0.08   -1753.76     0.10
    24   1.8485   8529.86    -0.08   -1695.73    -0.06
    25   1.8623   8310.32    -0.11   -1685.82    -0.05
    26   1.9195   7248.05    -0.13   -1674.64     0.08
    27   1.9330   6972.50    -0.03   -1679.65     0.04
    28   2.0045   5493.08    -0.16   -1756.19    -0.01
    29   2.0972   3926.01     0.06   -1969.41     0.11
    30   2.0997   3894.53     0.01   -1976.65     0.07
    31   2.1026   3858.81     0.22   -1985.36    -0.14
    32   3.0771   7000.39     0.13   -2789.37    -0.03

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.

15KZ175    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.711    46.737    46.685
ecceobj         0.200     0.201     0.199
incobj         18.726    18.727    18.726
qmin           36.846    36.891    36.950
qmax           57.614    57.697    57.571
amean          47.027    47.054    47.002
amin           46.609    46.634    46.580
amax           47.532    47.574    47.507
emean           0.197     0.198     0.196
emin            0.182     0.183     0.181
emax            0.213     0.214     0.213
imean          17.177    17.182    17.172
imin           16.648    16.651    16.645
imax           17.680    17.669    17.674
excite_mean     0.355     0.355     0.354
fracstop        1.000     1.000     1.000
cjmean          2.981     2.981     2.982

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       173.9     174.1     173.8
kozaiamp        179.9     180.0     180.0