Orbit Fit and Astrometric record for 15VH166

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: 15VH166   
# Created Tue Apr 23 01:10:47 2019
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   38
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000442   0.037584  -0.000028   0.002059   0.030634   0.000000
# Chi-squared of fit:     7.52 DOF:   70 RMS:  0.08
# Min/Max residuals:    -0.23    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.962364E-05  3.721866E-02  7.732892E-07  2.039891E-03  3.052208E-02 -4.693424E-03
# Covariance matrix:
  4.0520E-13 -4.9166E-13  1.3969E-14 -2.3168E-14 -1.7366E-13 -3.5125E-12
 -4.9166E-13  7.4774E-13 -2.3979E-14  4.0008E-14  2.6836E-13  6.0614E-12
  1.3969E-14 -2.3979E-14  1.6864E-13 -9.2664E-14 -8.9159E-15 -2.1395E-13
 -2.3168E-14  4.0008E-14 -9.2664E-14  6.6867E-14  1.4054E-14  3.5895E-13
 -1.7366E-13  2.6836E-13 -8.9159E-15  1.4054E-14  2.0319E-13  2.1434E-12
 -3.5125E-12  6.0614E-12 -2.1395E-13  3.5895E-13  2.1434E-12  5.4350E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.302149   47.156826   -0.127947   -0.022139   -0.980902  2456978.901288
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          345.02303 +/-     0.019
Argument of Peri:        7.89893 +/-     0.041
Long of Asc Node:       69.26019 +/-     0.002
Inclination:             3.38918 +/-     0.000
Eccentricity:         0.31794891 +/-    0.0001
Semi-Major Axis:     47.89359596 +/-    0.0048
Time of Perihelion: 2462007.0844 +/-       6.4
Perihelion:          32.66587930 +/-    0.0065
Aphelion:            63.12131261 +/-    0.0084
Period (y)              331.4548 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.84323930 +/-    0.0003
Ecliptic Y           24.82425087 +/-    0.0004
Ecliptic Z           -0.74453719 +/-    0.0000
Ecliptic XDOT        -0.00273553 +/-    0.0000
Ecliptic YDOT         0.00195966 +/-    0.0000
Ecliptic ZDOT         0.00019260 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.74331561 +/-    0.0003
Geocenter to KBO     32.76316691 +/-    0.0005
# Hcoef:  9.13

The following table shows the complete astrometric record for 15VH166. 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 (15VH166) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.40051  03 00 17.791  +15 42 28.25  24.3r 15VH166   568  C~2lVe      
2014 11  17.51464  03 00 17.129  +15 42 25.47  24.0r 15VH166   568  C~2lVe      
2014 11  19.30670  03 00 06.710  +15 41 44.38  24.4r 15VH166   568  C~2lVe      
2015 08  11.59273  03 14 03.314  +16 46 11.89  24.1w 15VH166   568  C~2lVe      
2015 09  12.51312  03 13 54.751  +16 45 07.96  24.6w 15VH166   568  C~2lVe      
2015 10  07.43992  03 12 31.095  +16 39 25.82  24.5w 15VH166   568  C~2lVe      
2015 10  07.44703  03 12 31.037  +16 39 25.54  24.5w 15VH166   568  C~2lVe      
2015 10  08.45165  03 12 26.487  +16 39 07.72  24.6w 15VH166   568  C~2lVe      
2015 10  08.51072  03 12 26.217  +16 39 06.68  24.5w 15VH166   568  C~2lVe      
2015 11  07.35903  03 09 44.921  +16 28 36.69  24.0r 15VH166   568  C~2lVe      
2015 11  07.40112  03 09 44.671  +16 28 35.78  24.1r 15VH166   568  C~2lVe      
2015 11  07.44330  03 09 44.416  +16 28 34.78  24.1r 15VH166   568  C~2lVe      
2015 11  10.52886  03 09 26.049  +16 27 24.26  24.5w 15VH166   568  C~2lVe      
2015 11  17.37547  03 08 45.287  +16 24 48.96  24.3w 15VH166   568  C~2lVe      
2015 11  17.42215  03 08 45.004  +16 24 47.93  24.3w 15VH166   568  C~2lVe      
2015 12  06.38432  03 06 57.370  +16 18 05.97  24.4w 15VH166   568  C~2lVe      
2015 12  13.31874  03 06 22.179  +16 15 58.44  24.4w 15VH166   568  C~2lVe      
2015 12  13.37723  03 06 21.883  +16 15 57.41  24.4w 15VH166   568  C~2lVe      
2016 01  01.37186  03 05 04.790  +16 11 33.10  24.8w 15VH166   568  C~2lVe      
2016 01  07.31862  03 04 47.729  +16 10 41.19  24.6w 15VH166   568  C~2lVe      
2016 02  04.29505  03 04 22.434  +16 10 28.98  24.6w 15VH166   568  C~2lVe      
2016 02  04.30157  03 04 22.441  +16 10 29.04  24.4w 15VH166   568  C~2lVe      
2016 02  10.28486  03 04 29.468  +16 11 18.16  24.7w 15VH166   568  C~2lVe      
2016 09  07.62568  03 22 29.980  +17 25 30.77  24.6w 15VH166   568  C~2lVe      
2016 09  26.58416  03 21 43.350  +17 22 26.92  24.6w 15VH166   568  C~2lVe      
2016 10  09.54522  03 20 50.960  +17 19 08.28  24.2w 15VH166   568  C~2lVe      
2016 10  09.61729  03 20 50.623  +17 19 06.90  24.7w 15VH166   568  C~2lVe      
2016 11  02.52573  03 18 43.191  +17 11 13.96  24.4w 15VH166   568  C~2lVe      
2016 11  04.40084  03 18 32.159  +17 10 33.43  24.4w 15VH166   568  C~2lVe      
2016 12  24.29598  03 13 58.215  +16 54 23.92  24.5w 15VH166   568  C~2lVe      
2016 12  24.31334  03 13 58.143  +16 54 23.67  24.7w 15VH166   568  C~2lVe      
2017 01  02.39822  03 13 24.630  +16 52 36.92  24.6w 15VH166   568  C~2lVe      
2017 01  02.41556  03 13 24.574  +16 52 36.77  24.5w 15VH166   568  C~2lVe      
2017 01  26.32220  03 12 39.343  +16 50 50.72  24.1w 15VH166   568  C~2lVe      
2017 01  26.32908  03 12 39.347  +16 50 50.66  24.6w 15VH166   568  C~2lVe      
2017 12  13.42791  03 23 26.736  +17 37 42.38  24.6w 15VH166   568  C~2lVe      
2017 12  16.34929  03 23 11.871  +17 36 53.76  24.6w 15VH166   568  C~2lVe      
2017 12  16.36856  03 23 11.774  +17 36 53.38  24.5w 15VH166   568  C~2lVe      

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    -0.07       0.00     0.06
  2   0.0003     -9.96     0.11       0.02    -0.13
  3   0.0052   -165.89    -0.02       2.88     0.01
  4   0.7315  12496.00    -0.10     433.27     0.01
  5   0.8189  12359.98    -0.08     404.15     0.06
  6   0.8872  11106.34     0.35     393.75    -0.17
  7   0.8872  11105.45    -0.05     393.70    -0.23
  8   0.8899  11037.49    -0.09     393.96     0.07
  9   0.8901  11033.46    -0.01     393.99     0.07
 10   0.9718   8624.94     0.06     409.42     0.08
 11   0.9719   8621.23     0.13     409.52     0.11
 12   0.9721   8617.42     0.12     409.54     0.07
 13   0.9805   8343.52    -0.04     413.02    -0.04
 14   0.9992   7736.01    -0.01     422.29     0.03
 15   0.9994   7731.81    -0.02     422.41     0.05
 16   1.0513   6129.91     0.02     457.31     0.01
 17   1.0703   5607.24    -0.02     473.28     0.02
 18   1.0704   5602.86    -0.11     473.46     0.03
 19   1.1224   4461.97     0.02     524.33    -0.06
 20   1.1387   4211.30    -0.10     542.17     0.09
 21   1.2153   3857.55    -0.06     631.03    -0.02
 22   1.2153   3857.66    -0.03     631.06    -0.02
 23   1.2317   3968.56     0.00     650.32    -0.10
 24   1.8076  20172.14    -0.03     827.55     0.00
 25   1.8595  19473.48    -0.00     819.69    -0.03
 26   1.8950  18690.86    -0.07     819.44     0.06
 27   1.8952  18685.80    -0.08     819.35    -0.07
 28   1.9606  16786.14    -0.03     832.60    -0.01
 29   1.9658  16621.87     0.10     834.41    -0.02
 30   2.1024  12555.99     0.01     928.04     0.04
 31   2.1024  12554.92     0.02     928.08     0.02
 32   2.1273  12061.07    -0.04     952.69     0.03
 33   2.1274  12060.26    -0.01     952.76     0.05
 34   2.1928  11404.03     0.01    1023.26     0.04
 35   2.1928  11404.07     0.10    1023.18    -0.05
 36   3.0719  21152.89     0.06    1332.06    -0.10
 37   3.0799  20932.72    -0.02    1338.79     0.06
 38   3.0800  20931.27    -0.02    1338.77    -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.

15VH166    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.324    48.333    48.314
ecceobj         0.322     0.322     0.322
incobj          3.385     3.385     3.385
qmin           32.104    32.110    32.104
qmax           64.166    64.197    64.169
amean          47.797    47.797    47.797
amin           47.352    47.342    47.344
amax           48.397    48.400    48.398
emean           0.313     0.313     0.313
emin            0.301     0.301     0.301
emax            0.327     0.327     0.327
imean           2.166     2.168     2.166
imin            1.569     1.601     1.565
imax            2.683     2.684     2.683
excite_mean     0.316     0.316     0.316
fracstop        1.000     1.000     1.000
cjmean          3.021     3.021     3.021

libcent 0        70.3      70.4      70.4
libamp  0         4.5       6.3       4.0
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       241.8     242.5     241.8
kozaiamp        179.9     180.0     180.0