Orbit Fit and Astrometric record for 15KB176

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: 15KB176   
# Created Sat Dec  4 02:13:26 2021
# Orbit generated from Bernstein formalism
# Fitting     28 observations of     28
# Arc:   3.25y
# First observation: 2014/05/30
#  Last observation: 2017/08/31
Preliminary a, adot, b, bdot, g, gdot:
   0.000312   0.026786   0.000169   0.013588   0.027095   0.000000
# Chi-squared of fit:    11.72 DOF:     50 RMS:  0.11
# Min/Max residuals:    -0.28    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.551315E-05  2.735158E-02  8.062286E-06  1.388094E-02  2.752495E-02  1.430787E-03
# Covariance matrix:
  3.1327E-13 -3.7813E-13  5.7507E-14 -1.3052E-13 -1.4075E-13 -3.6677E-12
 -3.7813E-13  7.0708E-13 -1.3431E-13  3.0409E-13  2.5998E-13  8.6172E-12
  5.7507E-14 -1.3431E-13  2.2705E-13 -1.8698E-13 -5.9381E-14 -1.9049E-12
 -1.3052E-13  3.0409E-13 -1.8698E-13  2.5187E-13  1.3603E-13  4.3130E-12
 -1.4075E-13  2.5998E-13 -5.9381E-14  1.3603E-13  2.6264E-13  3.6994E-12
 -3.6677E-12  8.6172E-12 -1.9049E-12  4.3130E-12  3.6994E-12  1.2221E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.161114 -127.156164   -0.279475    0.104752   -0.969900  2456807.882338
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           13.86193 +/-     0.081
Argument of Peri:      352.78904 +/-     0.122
Long of Asc Node:      221.62291 +/-     0.000
Inclination:            27.50043 +/-     0.001
Eccentricity:         0.18247089 +/-    0.0002
Semi-Major Axis:     45.18987942 +/-    0.0047
Time of Perihelion: 2452528.0063 +/-      25.0
Perihelion:          36.94404199 +/-    0.0087
Aphelion:            53.43571685 +/-    0.0096
Period (y)              303.7876 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.18444493 +/-    0.0004
Ecliptic Y          -29.73281623 +/-    0.0005
Ecliptic Z            3.89952665 +/-    0.0001
Ecliptic XDOT         0.00216709 +/-    0.0000
Ecliptic YDOT        -0.00164153 +/-    0.0000
Ecliptic ZDOT         0.00138813 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.30142445 +/-    0.0005
Geocenter to KBO     36.33067740 +/-    0.0007
# Hcoef:  9.06

The following table shows the complete astrometric record for 15KB176. 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 (15KB176) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38156  15 28 09.433  -12 31 00.46  25.0r 15KB176   568  C~2nvj      
2014 05  31.42022  15 28 04.205  -12 30 35.78  24.5r 15KB176   568  C~2nvj      
2014 06  01.30833  15 27 59.775  -12 30 14.69  25.0r 15KB176   568  C~2nvj      
2014 06  01.35165  15 27 59.549  -12 30 13.65  24.8r 15KB176   568  C~2nvj      
2015 02  23.63194  15 40 43.843  -12 49 05.02  25.0r 15KB176   568  C~2nvj      
2015 03  22.51359  15 40 16.503  -12 39 14.87  24.6r 15KB176   568  C~2nvj      
2015 04  18.53176  15 38 42.043  -12 26 44.08  25.4r 15KB176   568  C~2nvj      
2015 05  17.40428  15 36 18.385  -12 13 07.08  24.4r 15KB176   568  C~2nvj      
2015 05  17.44599  15 36 18.164  -12 13 06.35  24.8r 15KB176   568  C~2nvj      
2015 05  24.38965  15 35 41.796  -12 10 07.19  24.7r 15KB176   568  C~2nvj      
2015 05  24.43575  15 35 41.541  -12 10 05.82  24.6r 15KB176   568  C~2nvj      
2015 05  24.47682  15 35 41.324  -12 10 05.02  24.6r 15KB176   568  C~2nvj      
2015 05  26.46493  15 35 31.021  -12 09 15.99  25.0r 15KB176   568  C~2nvj      
2015 06  20.35717  15 33 32.218  -12 00 41.32  24.9r 15KB176   568  C~2nvj      
2015 06  20.39803  15 33 32.036  -12 00 40.66  24.7r 15KB176   568  C~2nvj      
2015 06  23.41822  15 33 19.658  -11 59 52.98  25.2r 15KB176   568  C~2nvj      
2015 07  11.29135  15 32 19.847  -11 56 26.32  24.6r 15KB176   568  C~2nvj      
2015 07  18.36074  15 32 03.502  -11 55 42.01  25.2r 15KB176   568  C~2nvj      
2016 02  06.63317  15 47 05.695  -12 29 21.20  24.7w 15KB176   568  C~2nvj      
2016 02  12.61871  15 47 18.661  -12 28 04.73  24.7w 15KB176   568  C~2nvj      
2016 03  15.62284  15 47 21.444  -12 17 35.17  25.1w 15KB176   568  C~2nvj      
2016 04  03.54664  15 46 33.812  -12 09 14.23  25.1w 15KB176   568  C~2nvj      
2016 04  08.59620  15 46 15.896  -12 06 51.90  25.5w 15KB176   568  C~2nvj      
2016 04  29.49739  15 44 44.390  -11 56 51.32  24.0w 15KB176   568  C~2nvj      
2016 05  04.47001  15 44 19.633  -11 54 31.01  25.2w 15KB176   568  C~2nvj      
2016 07  04.30222  15 39 32.699  -11 33 52.40  25.4w 15KB176   568  C~2nvj      
2016 07  05.37053  15 39 29.217  -11 33 42.32  25.5w 15KB176   568  C~2nvj      
2017 08  31.25681  15 45 41.785  -11 12 35.76  23.2w 15KB176   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     0.04       0.00    -0.02
     2   0.0028    -80.28     0.08       5.08    -0.13
     3   0.0053   -148.35     0.06       9.54    -0.02
     4   0.0054   -151.81    -0.04       9.74    -0.01
     5   0.7372  10988.35     0.02    1601.72    -0.09
     6   0.8108  10459.69    -0.06    2082.09     0.01
     7   0.8847   8935.30    -0.06    2485.86    -0.13
     8   0.9638   6692.97    -0.10    2779.03     0.12
     9   0.9639   6689.65     0.02    2778.97    -0.24
    10   0.9829   6128.49     0.01    2825.41     0.13
    11   0.9830   6124.52    -0.19    2825.85     0.30
    12   0.9831   6121.24    -0.13    2825.86     0.09
    13   0.9886   5962.67     0.11    2837.28     0.09
    14   1.0567   4146.22     0.12    2917.75     0.09
    15   1.0569   4143.47     0.02    2917.75     0.06
    16   1.0651   3955.63    -0.13    2920.16     0.02
    17   1.1141   3053.69    -0.28    2908.25     0.00
    18   1.1334   2810.16     0.28    2893.05    -0.03
    19   1.6899  16175.29    -0.15    4055.70     0.04
    20   1.7063  16343.84     0.10    4174.10    -0.09
    21   1.7940  16239.50    -0.05    4798.46    -0.04
    22   1.8458  15440.44     0.04    5126.58     0.15
    23   1.8596  15150.44     0.19    5204.79    -0.16
    24   1.9168  13698.42     0.05    5479.36    -0.16
    25   1.9304  13310.73     0.04    5531.59    -0.09
    26   2.0970   8909.54     0.10    5747.74     0.07
    27   2.0999   8857.32     0.04    5745.42     0.03
    28   3.2550  13909.70    -0.11    8267.49    -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.

15KB176    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.906    44.922    44.890
ecceobj         0.177     0.177     0.176
incobj         27.569    27.570    27.569
qmin           35.670    35.673    35.590
qmax           55.173    55.259    55.235
amean          45.228    45.244    45.206
amin           44.849    44.866    44.825
amax           45.665    45.707    45.663
emean           0.192     0.192     0.192
emin            0.174     0.174     0.174
emax            0.209     0.209     0.210
imean          28.073    28.078    28.060
imin           27.627    27.629    27.618
imax           28.517    28.504    28.499
excite_mean     0.508     0.508     0.508
fracstop        1.000     1.000     1.000
cjmean          2.787     2.787     2.788

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       164.1     164.1     163.7
kozaiamp        180.0     180.0     179.9