Orbit Fit and Astrometric record for 15KV173

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: 15KV173   
# Created Wed Dec  8 02:13:24 2021
# Orbit generated from Bernstein formalism
# Fitting     35 observations of     35
# Arc:   2.98y
# First observation: 2014/05/30
#  Last observation: 2017/05/21
Preliminary a, adot, b, bdot, g, gdot:
   0.000071   0.036123  -0.000005   0.001900   0.030125   0.000000
# Chi-squared of fit:     8.10 DOF:     64 RMS:  0.09
# Min/Max residuals:    -0.23    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.935013E-05  3.651866E-02  9.141076E-07  1.923601E-03  3.110342E-02  2.093056E-03
# Covariance matrix:
  1.7434E-13 -2.2138E-13  1.7288E-15 -5.6426E-15 -4.1208E-14 -1.5290E-12
 -2.2138E-13  5.1995E-13 -5.7253E-15  1.7142E-14  9.5903E-14  4.7851E-12
  1.7288E-15 -5.7253E-15  1.3056E-13 -8.3843E-14 -3.3939E-16 -5.9639E-14
 -5.6426E-15  1.7142E-14 -8.3843E-14  8.0477E-14  7.8048E-15  1.9794E-13
 -4.1208E-14  9.5903E-14 -3.3939E-16  7.8048E-15  1.8403E-13  1.5080E-12
 -1.5290E-12  4.7851E-12 -5.9639E-14  1.9794E-13  1.5080E-12  5.3340E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.228409 -126.577277   -0.269604    0.106192   -0.972534  2456807.882338
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           18.30971 +/-     0.044
Argument of Peri:       37.64602 +/-     0.066
Long of Asc Node:      170.12470 +/-     0.003
Inclination:             6.73306 +/-     0.000
Eccentricity:         0.17536516 +/-    0.0001
Semi-Major Axis:     39.54917184 +/-    0.0035
Time of Perihelion: 2452180.0583 +/-      11.0
Perihelion:          32.61362496 +/-    0.0057
Aphelion:            46.48471871 +/-    0.0064
Period (y)              248.7221 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.41358790 +/-    0.0003
Ecliptic Y          -26.61127042 +/-    0.0004
Ecliptic Z            3.48820215 +/-    0.0000
Ecliptic XDOT         0.00247799 +/-    0.0000
Ecliptic YDOT        -0.00205153 +/-    0.0000
Ecliptic ZDOT         0.00018844 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.12423075 +/-    0.0003
Geocenter to KBO     32.15080223 +/-    0.0004
# Hcoef:  8.93

The following table shows the complete astrometric record for 15KV173. 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 (15KV173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38156  15 30 30.689  -12 35 32.10  24.0r 15KV173   568  C~2lVH      
2014 05  30.43011  15 30 30.420  -12 35 31.22  23.9r 15KV173   568  C~2lVH      
2014 06  01.30833  15 30 19.896  -12 34 56.81  23.1r 15KV173   568  C~2lVH      
2014 06  01.35165  15 30 19.644  -12 34 55.90  23.3r 15KV173   568  C~2lVH      
2014 06  01.39455  15 30 19.400  -12 34 55.13  24.5r 15KV173   568  C~2lVH      
2014 06  22.30598  15 28 33.502  -12 29 55.55  24.2r 15KV173   568  C~2lVH      
2014 06  22.34880  15 28 33.314  -12 29 55.04  24.3r 15KV173   568  C~2lVH      
2014 07  19.32186  15 27 06.017  -12 28 06.00  24.1r 15KV173   568  C~2lVH      
2015 02  23.63607  15 45 00.394  -13 31 16.08  24.5r 15KV173   568  C~2lVH      
2015 03  22.51769  15 44 34.975  -13 24 24.64  23.9r 15KV173   568  C~2lVH      
2015 04  12.51271  15 43 20.773  -13 16 52.13  22.9r 15KV173   568  C~2lVH      
2015 04  12.55363  15 43 20.574  -13 16 51.06  24.4r 15KV173   568  C~2lVH      
2015 04  18.53589  15 42 52.599  -13 14 31.31  24.4r 15KV173   568  C~2lVH      
2015 05  17.40845  15 40 13.017  -13 03 26.98  24.3r 15KV173   568  C~2lVH      
2015 05  17.45019  15 40 12.766  -13 03 26.12  24.0r 15KV173   568  C~2lVH      
2015 05  17.50220  15 40 12.466  -13 03 24.91  24.0r 15KV173   568  C~2lVH      
2015 05  24.39373  15 39 32.041  -13 01 02.83  24.2r 15KV173   568  C~2lVH      
2015 05  24.43983  15 39 31.772  -13 01 01.91  24.0r 15KV173   568  C~2lVH      
2015 05  24.48091  15 39 31.531  -13 01 01.14  24.1r 15KV173   568  C~2lVH      
2015 05  26.46900  15 39 19.960  -13 00 22.34  24.5r 15KV173   568  C~2lVH      
2015 06  18.36794  15 37 15.843  -12 54 20.91  24.6r 15KV173   568  C~2lVH      
2015 06  18.40888  15 37 15.636  -12 54 20.39  23.8r 15KV173   568  C~2lVH      
2015 06  21.38354  15 37 01.470  -12 53 47.20  24.2r 15KV173   568  C~2lVH      
2015 07  18.34401  15 35 25.883  -12 51 39.18  24.2r 15KV173   568  C~2lVH      
2016 02  06.64935  15 52 38.281  -13 54 08.49  24.2w 15KV173   568  C~2lVH      
2016 02  06.65340  15 52 38.284  -13 54 08.41  24.5w 15KV173   568  C~2lVH      
2016 02  12.63895  15 52 54.415  -13 53 43.98  24.6w 15KV173   568  C~2lVH      
2016 03  17.61800  15 53 02.165  -13 47 01.84  24.4w 15KV173   568  C~2lVH      
2016 03  17.63019  15 53 02.154  -13 47 01.61  24.9w 15KV173   568  C~2lVH      
2016 03  17.64294  15 53 02.119  -13 47 01.27  24.6w 15KV173   568  C~2lVH      
2016 04  03.56283  15 52 15.790  -13 41 32.68  24.3w 15KV173   568  C~2lVH      
2016 04  09.55630  15 51 52.610  -13 39 23.78  24.3w 15KV173   568  C~2lVH      
2016 07  04.31842  15 44 25.109  -13 14 37.24  24.4w 15KV173   568  C~2lVH      
2016 07  05.39078  15 44 21.119  -13 14 32.38  24.4w 15KV173   568  C~2lVH      
2017 05  21.54276  15 56 35.533  -13 45 20.79  24.3w 15KV173   568  C~2lVH      

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    -0.16       0.00     0.01
     2   0.0001     -4.03    -0.01      -0.10     0.02
     3   0.0053   -161.84     0.12      -4.16    -0.11
     4   0.0054   -165.64     0.01      -4.17    -0.00
     5   0.0055   -169.30     0.01      -4.29    -0.01
     6   0.0628  -1746.16     0.01     -91.89    -0.04
     7   0.0629  -1748.95     0.08     -92.07     0.06
     8   0.1367  -3015.30    -0.07    -300.06     0.07
     9   0.7372  13156.06    -0.05    -250.38    -0.06
    10   0.8108  12699.03     0.04      65.74    -0.03
    11   0.8683  11536.99     0.24     257.24    -0.17
    12   0.8684  11533.91     0.04     257.61    -0.09
    13   0.8847  11102.95     0.05     299.31    -0.05
    14   0.9638   8675.82    -0.07     403.62    -0.01
    15   0.9639   8672.05    -0.08     403.59    -0.04
    16   0.9641   8667.49     0.06     403.75     0.09
    17   0.9829   8058.90    -0.12     403.57     0.12
    18   0.9830   8054.86    -0.05     403.54     0.14
    19   0.9832   8051.25     0.00     403.47     0.10
    20   0.9886   7877.50     0.02     401.52     0.04
    21   1.0513   6026.94     0.12     325.24     0.00
    22   1.0514   6023.87     0.06     325.03     0.02
    23   1.0596   5814.60    -0.01     308.24    -0.01
    24   1.1334   4425.60    -0.16     100.50    -0.04
    25   1.6900  20010.89     0.19     -84.64    -0.05
    26   1.6900  20010.92     0.04     -84.55    -0.01
    27   1.7064  20236.70    -0.00      -8.41    -0.03
    28   1.7994  20258.11    -0.23     410.74    -0.02
    29   1.7994  20257.90    -0.05     410.93     0.04
    30   1.7995  20257.32    -0.23     411.15     0.12
    31   1.8458  19519.48     0.03     582.79     0.03
    32   1.8622  19158.30     0.02     633.62     0.03
    33   2.0970  12423.02     0.03     605.37    -0.06
    34   2.1000  12365.00     0.05     596.70    -0.10
    35   2.9765  23302.60     0.08    1196.12     0.01

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.

15KV173    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.286    39.298    39.274
ecceobj         0.169     0.170     0.169
incobj          6.748     6.748     6.748
qmin           31.833    31.789    31.807
qmax           47.559    47.578    47.596
amean          39.456    39.457    39.456
amin           39.005    39.010    39.018
amax           39.943    39.965    39.932
emean           0.175     0.175     0.175
emin            0.155     0.156     0.157
emax            0.191     0.192     0.193
imean           6.599     6.603     6.592
imin            6.042     6.051     6.040
imax            7.295     7.275     7.262
excite_mean     0.209     0.210     0.209
fracstop        1.000     1.000     1.000
cjmean          3.002     3.002     3.002

libcent 0       180.7     179.5     180.1
libamp  0        85.5      91.1      80.7
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       183.9     184.1     181.1
kozaiamp        180.0     180.0     180.0