Orbit Fit and Astrometric record for 15VE167

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: 15VE167   
# Created Mon Dec  6 02:13:38 2021
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   2.27y
# First observation: 2015/09/07
#  Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000178   0.033133  -0.000045   0.018883   0.029815   0.000000
# Chi-squared of fit:     9.04 DOF:     54 RMS:  0.10
# Min/Max residuals:    -0.17    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.824572E-05  3.268936E-02  9.903572E-06  1.859528E-02  2.968886E-02 -8.826818E-04
# Covariance matrix:
  2.4882E-13 -8.8676E-14 -2.3742E-15  1.5309E-14  1.3144E-13  4.2521E-13
 -8.8676E-14  3.4504E-13 -6.8302E-14  2.2835E-13  1.3175E-13  5.9859E-12
 -2.3742E-15 -6.8302E-14  1.5490E-13 -1.6981E-13 -3.8162E-14 -1.8006E-12
  1.5309E-14  2.2835E-13 -1.6981E-13  3.4798E-13  1.3563E-13  6.0261E-12
  1.3144E-13  1.3175E-13 -3.8162E-14  1.3563E-13  2.1207E-13  3.5815E-12
  4.2521E-13  5.9859E-12 -1.8006E-12  6.0261E-12  3.5815E-12  1.5799E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.021008   52.808484    0.939105   -0.019593   -0.374068  2457273.125689
# Heliocentric elements and errors
Epoch:              2457270.5000  =  2015/09/05
Mean Anomaly:          355.87609 +/-     0.028
Argument of Peri:        4.03112 +/-     0.068
Long of Asc Node:       56.47252 +/-     0.000
Inclination:            29.73297 +/-     0.001
Eccentricity:         0.38649631 +/-    0.0001
Semi-Major Axis:     55.29046037 +/-    0.0060
Time of Perihelion: 2458990.7072 +/-      11.5
Perihelion:          33.92090144 +/-    0.0056
Aphelion:            76.66001931 +/-    0.0094
Period (y)              411.1341 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.30272324 +/-    0.0003
Ecliptic Y           26.52545461 +/-    0.0004
Ecliptic Z           -1.77480646 +/-    0.0000
Ecliptic XDOT        -0.00239782 +/-    0.0000
Ecliptic YDOT         0.00182306 +/-    0.0000
Ecliptic ZDOT         0.00171678 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.06692968 +/-    0.0004
Geocenter to KBO     33.68266431 +/-    0.0005
# Hcoef:  9.27

The following table shows the complete astrometric record for 15VE167. 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 (15VE167) followed by the observatory code and reference code for the source of the astrometry.

2015 09  07.62490  03 24 48.482  +15 33 00.90  24.9w 15VE167   568  C~2lVh      
2015 10  09.57195  03 23 06.052  +15 30 05.37  24.7w 15VE167   568  C~2lVh      
2015 11  06.34408  03 20 32.753  +15 24 32.54  24.3r 15VE167   568  C~2lVh      
2015 11  06.41470  03 20 32.315  +15 24 31.44  24.6r 15VE167   568  C~2lVh      
2015 11  06.48426  03 20 31.873  +15 24 30.55  24.6r 15VE167   568  C~2lVh      
2015 11  17.48361  03 19 24.112  +15 22 10.60  24.8w 15VE167   568  C~2lVh      
2015 11  17.57138  03 19 23.575  +15 22 09.44  24.4w 15VE167   568  C~2lVh      
2015 12  06.34926  03 17 31.276  +15 18 47.10  24.6w 15VE167   568  C~2lVh      
2015 12  06.48675  03 17 30.485  +15 18 45.98  24.8w 15VE167   568  C~2lVh      
2015 12  31.37031  03 15 30.783  +15 16 49.71  25.0w 15VE167   568  C~2lVh      
2016 01  07.39971  03 15 06.614  +15 17 00.59  24.2w 15VE167   568  C~2lVh      
2016 02  05.29926  03 14 25.462  +15 21 48.03  25.2w 15VE167   568  C~2lVh      
2016 02  11.25262  03 14 29.476  +15 23 36.76  24.6w 15VE167   568  C~2lVh      
2016 09  07.60834  03 31 15.871  +17 02 40.27        15VE167   568  C~2lVh      
2016 09  27.53529  03 30 25.062  +17 02 14.49  24.8w 15VE167   568  C~2lVh      
2016 10  07.52743  03 29 44.472  +17 01 14.37  26.1w 15VE167   568  C~2lVh      
2016 10  07.53507  03 29 44.439  +17 01 14.03  24.7w 15VE167   568  C~2lVh      
2016 10  07.62286  03 29 44.037  +17 01 13.25  24.6w 15VE167   568  C~2lVh      
2016 10  09.49835  03 29 35.449  +17 00 58.79  24.8w 15VE167   568  C~2lVh      
2016 10  09.57103  03 29 35.099  +17 00 58.15  24.8w 15VE167   568  C~2lVh      
2016 11  02.47368  03 27 24.878  +16 56 55.73  24.6w 15VE167   568  C~2lVh      
2016 11  02.48525  03 27 24.803  +16 56 55.66  24.8w 15VE167   568  C~2lVh      
2016 11  04.44969  03 27 12.886  +16 56 32.57  24.7w 15VE167   568  C~2lVh      
2016 11  04.46126  03 27 12.815  +16 56 32.48  24.7w 15VE167   568  C~2lVh      
2016 12  28.46047  03 22 05.959  +16 48 24.36  25.1w 15VE167   568  C~2lVh      
2016 12  29.39076  03 22 02.112  +16 48 22.30  24.7w 15VE167   568  C~2lVh      
2017 01  27.30287  03 20 48.057  +16 50 15.32  24.9w 15VE167   568  C~2lVh      
2017 09  20.60688  03 37 25.547  +18 32 12.22        15VE167   568  C~2lVh      
2017 12  13.37172  03 29 56.430  +18 21 05.41  24.4w 15VE167   568  C~2lVi      
2017 12  13.40930  03 29 56.213  +18 21 05.09  25.3w 15VE167   568  C~2lVi      

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    -0.17       0.00     0.00
     2   0.0875  -1477.17    -0.02     200.98     0.04
     3   0.1635  -3705.99     0.06     439.65     0.07
     4   0.1637  -3712.40     0.00     440.20    -0.12
     5   0.1639  -3718.81    -0.14     440.96    -0.07
     6   0.1940  -4702.49     0.08     555.62     0.01
     7   0.1942  -4710.30     0.23     556.48    -0.09
     8   0.2457  -6333.45    -0.06     778.12     0.08
     9   0.2460  -6344.80    -0.04     779.99     0.19
    10   0.3142  -8049.90    -0.05    1116.42     0.01
    11   0.3334  -8385.29    -0.08    1218.06    -0.09
    12   0.4125  -8885.98    -0.05    1651.32     0.05
    13   0.4288  -8801.39     0.11    1741.18    -0.01
    14   1.0020   6731.52    -0.06    3845.15     0.00
    15   1.0566   6017.56    -0.04    3996.71    -0.17
    16   1.0839   5437.74     0.07    4079.96     0.39
    17   1.0839   5437.20     0.04    4079.74     0.11
    18   1.0842   5431.41     0.05    4080.39    -0.01
    19   1.0893   5308.32     0.11    4096.38    -0.08
    20   1.0895   5303.29     0.05    4096.99    -0.13
    21   1.1550   3431.55    -0.01    4319.80    -0.09
    22   1.1550   3430.49    -0.05    4320.00    -0.01
    23   1.1604   3259.01    -0.06    4339.77    -0.05
    24   1.1604   3258.00    -0.04    4339.94    -0.01
    25   1.3082  -1130.33     0.15    4967.49    -0.08
    26   1.3108  -1184.32     0.08    4979.48    -0.03
    27   1.3899  -2184.62    -0.05    5358.78    -0.01
    28   2.0369  13158.88     0.06    7818.84    -0.05
    29   2.2662   6774.06    -0.06    8692.44     0.06
    30   2.2664   6770.98    -0.13    8692.88     0.06

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.

15VE167    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE
Type:         5:2EII    5:2EII    5:2EII

axisobj        56.035    56.057    56.014
ecceobj         0.394     0.394     0.393
incobj         29.656    29.656    29.656
qmin           33.478    33.399    33.474
qmax           78.443    78.639    78.332
amean          55.461    55.461    55.461
amin           54.837    54.844    54.815
amax           56.248    56.273    56.265
emean           0.375     0.382     0.364
emin            0.362     0.371     0.342
emax            0.395     0.398     0.394
imean          29.222    28.896    29.678
imin           28.602    28.465    28.598
imax           29.628    29.207    30.436
excite_mean     0.616     0.616     0.615
fracstop        1.000     1.000     1.000
cjmean          2.739     2.739     2.739

libcent 0       179.2     180.1     180.1
libamp  0        78.6      69.7      90.4
libcent 1       181.4     177.8     188.4
libamp  1        82.4      71.4      97.0
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        57.3     213.0      27.3
kozaiamp        180.0     180.0     180.0