Orbit Fit and Astrometric record for 15KZ174

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: 15KZ174   
# Created Fri Dec  3 02:13:23 2021
# Orbit generated from Bernstein formalism
# Fitting     32 observations of     32
# Arc:   3.22y
# First observation: 2014/05/29
#  Last observation: 2017/08/19
Preliminary a, adot, b, bdot, g, gdot:
   0.000268   0.029441   0.000072   0.007275   0.027263   0.000000
# Chi-squared of fit:     5.82 DOF:     58 RMS:  0.08
# Min/Max residuals:    -0.14    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.750147E-05  3.022096E-02  3.928956E-06  7.462005E-03  2.765169E-02  5.804054E-03
# Covariance matrix:
  1.9297E-13 -2.3528E-13  1.3452E-14 -3.5104E-14 -4.9489E-14 -1.8967E-12
 -2.3528E-13  4.9069E-13 -3.6149E-14  9.3274E-14  1.0175E-13  5.0626E-12
  1.3452E-14 -3.6149E-14  1.3830E-13 -8.9811E-14 -9.7489E-15 -4.4264E-13
 -3.5104E-14  9.3274E-14 -8.9811E-14  9.6961E-14  3.0022E-14  1.1515E-12
 -4.9489E-14  1.0175E-13 -9.7489E-15  3.0022E-14  1.7152E-13  1.5222E-12
 -1.8967E-12  5.0626E-12 -4.4264E-13  1.1515E-12  1.5222E-12  6.2291E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.086599 -127.208267   -0.263376    0.086926   -0.975932  2456806.847808
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           27.93398 +/-     0.014
Argument of Peri:      328.89873 +/-     0.034
Long of Asc Node:      213.93671 +/-     0.001
Inclination:            14.72007 +/-     0.000
Eccentricity:         0.29828200 +/-    0.0003
Semi-Major Axis:     48.42662788 +/-    0.0094
Time of Perihelion: 2447249.3619 +/-       4.1
Perihelion:          33.98183659 +/-    0.0139
Aphelion:            62.87141917 +/-    0.0173
Period (y)              337.0036 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.16689599 +/-    0.0003
Ecliptic Y          -29.62741285 +/-    0.0004
Ecliptic Z            3.20655945 +/-    0.0001
Ecliptic XDOT         0.00207136 +/-    0.0000
Ecliptic YDOT        -0.00221680 +/-    0.0000
Ecliptic ZDOT         0.00078700 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.14077131 +/-    0.0004
Geocenter to KBO     36.16415595 +/-    0.0005
# Hcoef:  8.88

The following table shows the complete astrometric record for 15KZ174. 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 (15KZ174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.34703  15 26 51.737  -13 32 43.04  25.2r 15KZ174   568  C~2lVL      
2014 05  29.38590  15 26 51.543  -13 32 42.39  24.3r 15KZ174   568  C~2lVL      
2014 05  30.45456  15 26 46.142  -13 32 20.00  25.4r 15KZ174   568  C~2lVL      
2014 05  31.37090  15 26 41.547  -13 32 00.97  24.1r 15KZ174   568  C~2lVL      
2014 06  21.35020  15 25 06.140  -13 25 55.49  24.9r 15KZ174   568  C~2lVL      
2014 06  21.38905  15 25 05.984  -13 25 55.01  24.4r 15KZ174   568  C~2lVL      
2014 07  19.26644  15 23 45.642  -13 21 58.09  24.5r 15KZ174   568  C~2lVL      
2015 02  20.65667  15 39 36.509  -14 07 01.67  24.5r 15KZ174   568  C~2lVL      
2015 03  19.57074  15 39 17.559  -14 00 12.07  25.3r 15KZ174   568  C~2lVL      
2015 03  21.62951  15 39 13.021  -13 59 31.85  24.6r 15KZ174   568  C~2lVL      
2015 04  12.48811  15 38 02.123  -13 51 30.35  23.6r 15KZ174   568  C~2lVL      
2015 04  12.52910  15 38 01.968  -13 51 29.27  24.6r 15KZ174   568  C~2lVL      
2015 04  18.51079  15 37 36.444  -13 49 05.92  24.6r 15KZ174   568  C~2lVL      
2015 05  24.36911  15 34 36.301  -13 34 59.91  24.4r 15KZ174   568  C~2lVL      
2015 05  24.41533  15 34 36.057  -13 34 58.98  24.0r 15KZ174   568  C~2lVL      
2015 05  24.45620  15 34 35.845  -13 34 58.15  24.3r 15KZ174   568  C~2lVL      
2015 05  26.44379  15 34 25.553  -13 34 15.84  24.4r 15KZ174   568  C~2lVL      
2015 06  18.34328  15 32 35.721  -13 27 22.37  24.3r 15KZ174   568  C~2lVL      
2015 06  18.38434  15 32 35.530  -13 27 21.74  24.8r 15KZ174   568  C~2lVL      
2015 06  21.35896  15 32 23.078  -13 26 40.05  24.6r 15KZ174   568  C~2lVL      
2015 07  10.39102  15 31 18.081  -13 23 29.32  24.8r 15KZ174   568  C~2lVL      
2015 07  17.34619  15 31 01.718  -13 22 55.43  24.6r 15KZ174   568  C~2lVL      
2015 07  18.31678  15 30 59.787  -13 22 52.18  24.5r 15KZ174   568  C~2lVL      
2016 02  06.63721  15 46 13.855  -14 07 48.63  24.6w 15KZ174   568  C~2lVL      
2016 03  15.63093  15 46 29.952  -14 00 09.57  25.5w 15KZ174   568  C~2lVL      
2016 04  03.55474  15 45 42.378  -13 53 45.12  24.8w 15KZ174   568  C~2lVL      
2016 04  08.60428  15 45 24.474  -13 51 51.71  24.9w 15KZ174   568  C~2lVL      
2016 04  29.47374  15 43 53.293  -13 43 42.26  24.8w 15KZ174   568  C~2lVL      
2016 05  04.40882  15 43 28.796  -13 41 46.07  24.8w 15KZ174   568  C~2lVL      
2016 05  30.46201  15 41 14.006  -13 32 20.79  24.6w 15KZ174   568  C~2lVL      
2017 03  30.57261  15 52 59.188  -13 53 36.65  24.6w 15KZ174   568  C~2lVM      
2017 08  19.27489  15 44 48.324  -13 24 17.43        15KZ174   568  C~2lVM      

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    -0.05       0.00     0.07
     2   0.0001     -2.90     0.09      -0.07    -0.07
     3   0.0030    -84.76     0.08       2.13     0.02
     4   0.0055   -154.39    -0.00       3.98     0.14
     5   0.0630  -1593.25    -0.01      12.35     0.02
     6   0.0631  -1595.58     0.03      12.25    -0.04
     7   0.1394  -2790.06    -0.14     -51.21    -0.10
     8   0.7319  11317.99     0.11     687.46    -0.10
     9   0.8055  10952.80    -0.06    1021.35    -0.03
    10   0.8112  10878.95     0.06    1044.96    -0.10
    11   0.8710   9759.57    -0.10    1269.85    -0.09
    12   0.8711   9757.11     0.10    1270.37     0.08
    13   0.8875   9361.16    -0.14    1321.76     0.11
    14   0.9857   6605.75    -0.05    1517.86     0.04
    15   0.9858   6602.07    -0.03    1517.91    -0.02
    16   0.9859   6598.87     0.04    1517.97    -0.05
    17   0.9914   6442.87     0.01    1523.04     0.03
    18   1.0541   4787.30     0.12    1538.38     0.08
    19   1.0542   4784.44    -0.04    1538.32     0.07
    20   1.0623   4597.99     0.04    1534.82    -0.09
    21   1.1144   3631.29     0.06    1489.79     0.06
    22   1.1335   3391.36    -0.01    1464.58    -0.09
    23   1.1361   3363.23    -0.09    1460.87    -0.02
    24   1.6928  16979.61    -0.07    1982.24     0.22
    25   1.7968  17104.22     0.05    2484.39     0.01
    26   1.8486  16337.28    -0.02    2701.14    -0.03
    27   1.8624  16055.81    -0.09    2751.95    -0.05
    28   1.9196  14642.83    -0.01    2923.14    -0.14
    29   1.9331  14266.82     0.03    2953.77    -0.00
    30   2.0044  12215.67     0.07    3046.99     0.04
    31   2.8370  22590.63     0.02    4150.94     0.08
    32   3.2250  15159.36    -0.00    4245.49    -0.05

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.

15KZ174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.014    48.043    47.986
ecceobj         0.292     0.292     0.291
incobj         14.760    14.760    14.760
qmin           32.984    32.842    32.958
qmax           64.582    64.819    64.421
amean          48.427    48.299    48.144
amin           47.748    46.852    46.893
amax           49.079    49.170    49.023
emean           0.294     0.294     0.281
emin            0.271     0.261     0.242
emax            0.318     0.322     0.317
imean          15.339    14.618    15.214
imin           13.972    12.835    13.568
imax           16.530    16.404    16.438
excite_mean     0.395     0.387     0.385
fracstop        1.000     1.000     1.000
cjmean          2.959     2.967     2.967

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       178.6     181.2     176.7
kozaiamp        179.9     179.9     180.0