Orbit Fit and Astrometric record for 15VV166

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: 15VV166   
# Created Wed Dec  8 02:13:40 2021
# Orbit generated from Bernstein formalism
# Fitting     33 observations of     33
# Arc:   2.27y
# First observation: 2015/09/07
#  Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000082   0.019666  -0.000004  -0.000098   0.021839   0.000000
# Chi-squared of fit:     7.09 DOF:     60 RMS:  0.08
# Min/Max residuals:    -0.31    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.458712E-05  1.950045E-02 -2.728276E-08 -9.871616E-05  2.177909E-02 -5.631100E-04
# Covariance matrix:
  1.9518E-13 -3.8384E-14  2.4808E-15 -1.2579E-15  1.3365E-13  1.7732E-12
 -3.8384E-14  2.9461E-13  2.9982E-15 -4.2741E-15  1.5103E-13  7.8853E-12
  2.4808E-15  2.9982E-15  1.0037E-13 -7.0911E-14  4.6570E-15  1.2676E-13
 -1.2579E-15 -4.2741E-15 -7.0911E-14  8.8989E-14 -3.8518E-15 -1.6727E-13
  1.3365E-13  1.5103E-13  4.6570E-15 -3.8518E-15  2.4521E-13  6.4365E-12
  1.7732E-12  7.8853E-12  1.2676E-13 -1.6727E-13  6.4365E-12  3.0538E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.764435   52.358846    0.936136   -0.018273   -0.381501  2457273.125689
# Heliocentric elements and errors
Epoch:              2457270.5000  =  2015/09/05
Mean Anomaly:          223.28968 +/-     0.472
Argument of Peri:       45.22660 +/-     0.468
Long of Asc Node:      148.50112 +/-     0.018
Inclination:             2.76359 +/-     0.000
Eccentricity:         0.07949522 +/-    0.0005
Semi-Major Axis:     43.65879078 +/-    0.0042
Time of Perihelion: 2497283.8378 +/-     137.9
Perihelion:          40.18812566 +/-    0.0238
Aphelion:            47.12945590 +/-    0.0239
Period (y)              288.4800 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.97909787 +/-    0.0006
Ecliptic Y           36.04650757 +/-    0.0008
Ecliptic Z           -2.21449207 +/-    0.0001
Ecliptic XDOT        -0.00198656 +/-    0.0000
Ecliptic YDOT         0.00143422 +/-    0.0000
Ecliptic ZDOT        -0.00000893 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.30380974 +/-    0.0008
Geocenter to KBO     45.91559255 +/-    0.0010
# Hcoef:  7.87

The following table shows the complete astrometric record for 15VV166. 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 (15VV166) followed by the observatory code and reference code for the source of the astrometry.

2015 09  07.62490  03 22 44.110  +15 41 09.30  24.7w 15VV166   568  C~2lVg      
2015 09  12.48855  03 22 37.295  +15 40 26.47  24.7w 15VV166   568  C~2lVg      
2015 10  07.53269  03 21 33.943  +15 35 11.92  24.7w 15VV166   568  C~2lVg      
2015 10  07.59208  03 21 33.739  +15 35 11.03  25.3w 15VV166   568  C~2lVg      
2015 10  09.57195  03 21 26.957  +15 34 40.55  24.4w 15VV166   568  C~2lVg      
2015 11  06.34408  03 19 33.749  +15 26 47.06  24.5r 15VV166   568  C~2lVg      
2015 11  06.41470  03 19 33.432  +15 26 45.75  24.7r 15VV166   568  C~2lVg      
2015 11  06.48426  03 19 33.116  +15 26 44.39  24.6r 15VV166   568  C~2lVg      
2015 11  07.50182  03 19 28.536  +15 26 26.36  24.4w 15VV166   568  C~2lVg      
2015 11  17.48361  03 18 43.285  +15 23 30.78  24.5w 15VV166   568  C~2lVg      
2015 11  17.57138  03 18 42.888  +15 23 29.01  24.8w 15VV166   568  C~2lVg      
2015 12  06.34926  03 17 20.374  +15 18 25.96  24.6w 15VV166   568  C~2lVg      
2015 12  06.48675  03 17 19.801  +15 18 23.92  25.1w 15VV166   568  C~2lVg      
2015 12  31.37031  03 15 51.527  +15 13 35.29  24.6w 15VV166   568  C~2lVg      
2016 01  07.39971  03 15 33.587  +15 12 46.02  24.5w 15VV166   568  C~2lVg      
2016 02  05.29926  03 15 02.287  +15 12 26.54  25.5w 15VV166   568  C~2lVg      
2016 02  11.25262  03 15 04.973  +15 12 59.49  24.7w 15VV166   568  C~2lVg      
2016 09  07.58521  03 27 13.323  +15 57 27.45  24.9w 15VV166   568  C~2lVg      
2016 09  27.51883  03 26 34.097  +15 53 57.68  24.6w 15VV166   568  C~2lVg      
2016 09  29.49637  03 26 28.609  +15 53 31.95  24.9w 15VV166   568  C~2lVg      
2016 10  05.49953  03 26 10.296  +15 52 08.16  24.4w 15VV166   568  C~2lVg      
2016 10  07.59973  03 26 03.362  +15 51 37.30  24.8w 15VV166   568  C~2lVg      
2016 10  09.50422  03 25 56.846  +15 51 08.67  24.8w 15VV166   568  C~2lVg      
2016 10  09.57681  03 25 56.601  +15 51 07.57  24.7w 15VV166   568  C~2lVg      
2016 11  04.46713  03 24 11.676  +15 43 57.18  24.6w 15VV166   568  C~2lVg      
2016 12  28.44224  03 20 28.120  +15 30 53.40  24.7w 15VV166   568  C~2lVg      
2016 12  28.45409  03 20 28.092  +15 30 53.34  24.7w 15VV166   568  C~2lVg      
2017 01  27.30860  03 19 31.294  +15 28 55.16  24.7w 15VV166   568  C~2lVg      
2017 09  16.63393  03 31 31.535  +16 12 14.47        15VV166   568  C~2lVg      
2017 09  17.59434  03 31 29.768  +16 12 04.95        15VV166   568  C~2lVg      
2017 09  23.53642  03 31 17.196  +16 11 00.79  24.5w 15VV166   568  C~2lVg      
2017 09  23.57295  03 31 17.102  +16 11 00.31        15VV166   568  C~2lVg      
2017 12  13.36708  03 25 54.404  +15 50 21.86        15VV166   568  C~2lVg      

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    -0.09       0.00    -0.01
     2   0.0133   -106.04     0.00     -16.60    -0.02
     3   0.0819  -1071.01    -0.02     -89.33     0.05
     4   0.0820  -1074.08    -0.01     -89.45     0.06
     5   0.0875  -1176.60    -0.05     -94.07     0.04
     6   0.1635  -2879.68     0.01    -134.92     0.12
     7   0.1637  -2884.45     0.06    -135.01     0.04
     8   0.1639  -2889.21     0.05    -135.16    -0.08
     9   0.1667  -2957.86    -0.05    -135.64     0.01
    10   0.1940  -3635.52     0.00    -137.55     0.02
    11   0.1942  -3641.52     0.03    -137.79    -0.24
    12   0.2457  -4873.40     0.01    -123.10     0.01
    13   0.2460  -4881.94     0.12    -122.93    -0.03
    14   0.3142  -6191.42    -0.06     -70.54     0.03
    15   0.3334  -6455.21    -0.15     -50.53    -0.31
    16   0.4125  -6898.14     0.13      48.81     0.15
    17   0.4288  -6851.96    -0.05      70.49     0.04
    18   1.0019   4006.87    -0.01     -23.18     0.05
    19   1.0565   3406.56    -0.07     -86.37    -0.04
    20   1.0619   3323.46     0.18     -91.67     0.14
    21   1.0784   3046.65    -0.06    -107.26     0.07
    22   1.0841   2942.05     0.05    -112.29     0.04
    23   1.0893   2843.85    -0.12    -116.65     0.07
    24   1.0895   2840.15     0.06    -116.84     0.02
    25   1.1604   1266.03     0.03    -155.51    -0.05
    26   1.3082  -2056.74    -0.05     -97.49    -0.02
    27   1.3082  -2057.14     0.08     -97.45    -0.01
    28   1.3900  -2881.20     0.03      -1.99    -0.06
    29   2.0260   7835.67     0.04     -73.62    -0.06
    30   2.0287   7808.63     0.08     -76.69    -0.04
    31   2.0449   7617.12     0.00     -95.08    -0.02
    32   2.0450   7615.69    -0.09     -95.21    -0.06
    33   2.2662   2798.07    -0.10    -153.23     0.08

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.

15VV166    quality flag:2

Type:         7:4EEE CLASSICAL    7:4EEE

axisobj        44.035    44.045    44.025
ecceobj         0.070     0.071     0.069
incobj          2.760     2.760     2.760
qmin           39.793    39.784    39.685
qmax           48.003    47.966    48.103
amean          43.726    43.725    43.726
amin           43.360    43.344    43.341
amax           44.127    44.134    44.139
emean           0.076     0.074     0.077
emin            0.064     0.057     0.065
emax            0.088     0.087     0.090
imean           2.675     2.669     2.670
imin            1.855     1.843     1.860
imax            3.409     3.404     3.457
excite_mean     0.090     0.088     0.090
fracstop        1.000     1.000     1.000
cjmean          3.089     3.089     3.088

libcent 0       181.4    -180.0     180.6
libamp  0       157.5    -180.0     119.9
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       173.2     164.8     137.5
kozaiamp        180.0     179.9     180.0