Orbit Fit and Astrometric record for 15VN166

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: 15VN166   
# Created Wed Dec  8 02:13:39 2021
# Orbit generated from Bernstein formalism
# Fitting     35 observations of     36
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000482   0.028053  -0.000049  -0.002960   0.025581   0.000000
# Chi-squared of fit:    10.76 DOF:     64 RMS:  0.10
# Min/Max residuals:    -0.31    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.703845E-05  2.904737E-02 -1.779984E-06 -3.064796E-03  2.618387E-02  9.917822E-03
# Covariance matrix:
  3.8857E-13 -4.4414E-13 -1.9686E-14  3.5621E-14 -1.7452E-13 -3.8793E-12
 -4.4414E-13  6.6535E-13  3.4090E-14 -6.1664E-14  2.7880E-13  6.7175E-12
 -1.9686E-14  3.4090E-14  1.8977E-13 -1.0244E-13  1.5809E-14  3.8326E-13
  3.5621E-14 -6.1664E-14 -1.0244E-13  7.4199E-14 -2.8715E-14 -6.9326E-13
 -1.7452E-13  2.7880E-13  1.5809E-14 -2.8715E-14  2.7022E-13  3.1163E-12
 -3.8793E-12  6.7175E-12  3.8326E-13 -6.9326E-13  3.1163E-12  7.5523E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.050014   47.646433   -0.119648   -0.000699   -0.982196  2456978.906378
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           21.40613 +/-     0.013
Argument of Peri:      119.38351 +/-     0.020
Long of Asc Node:      227.36330 +/-     0.000
Inclination:             6.02840 +/-     0.001
Eccentricity:         0.47983743 +/-    0.0003
Semi-Major Axis:     62.69786794 +/-    0.0260
Time of Perihelion: 2446188.1567 +/-       0.8
Perihelion:          32.61308414 +/-    0.0244
Aphelion:            92.78265173 +/-    0.0435
Period (y)              496.4635 +/-      0.31
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.29986673 +/-    0.0005
Ecliptic Y           29.03150641 +/-    0.0006
Ecliptic Z           -0.03343084 +/-    0.0000
Ecliptic XDOT        -0.00155035 +/-    0.0000
Ecliptic YDOT         0.00280741 +/-    0.0000
Ecliptic ZDOT        -0.00032127 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.17285376 +/-    0.0005
Geocenter to KBO     38.19145402 +/-    0.0008
# Hcoef:  9.18

The following table shows the complete astrometric record for 15VN166. 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 (15VN166) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.40560  03 00 47.436  +17 02 49.39  25.2r 15VN166   568  C~2lVf      
2014 11  17.51968  03 00 46.846  +17 02 46.73  25.2r 15VN166   568  C~2lVf      
2014 11  23.41643  03 00 17.096  +17 00 31.44  24.9r 15VN166   568  C~2lVf      
2015 08  11.57225  03 12 19.708  +17 42 02.28  24.5w 15VN166   568  C~2lVf      
2015 09  06.61892  03 12 18.016  +17 41 03.41  25.5w 15VN166   568  C~2lVf      
2015 10  08.44583  03 10 50.140  +17 34 12.32  25.6w 15VN166   568  C~2lVf      
2015 10  08.50488  03 10 49.905  +17 34 11.15  25.4w 15VN166   568  C~2lVf      
2015 11  07.35377  03 08 29.994  +17 23 56.06  25.2r 15VN166   568  C~2lVf      
2015 11  07.39585  03 08 29.779  +17 23 55.13  25.1r 15VN166   568  C~2lVf      
2015 11  07.43803  03 08 29.566  +17 23 54.17  24.9r 15VN166   568  C~2lVf      
2015 11  10.52298  03 08 13.721  +17 22 44.92  25.3w 15VN166   568  C~2lVf      
2015 11  17.36965  03 07 38.600  +17 20 11.29  25.4w 15VN166   568  C~2lVf      
2015 11  17.41626  03 07 38.370  +17 20 10.14  25.0w 15VN166   568  C~2lVf      
2015 12  06.37850  03 06 05.737  +17 13 22.68  25.3w 15VN166   568  C~2lVf      
2015 12  13.31287  03 05 35.460  +17 11 08.27  25.4w 15VN166   568  C~2lVf      
2015 12  13.37141  03 05 35.215  +17 11 06.87  25.1w 15VN166   568  C~2lVf      
2016 01  01.36607  03 04 28.691  +17 06 06.24  25.6w 15VN166   568  C~2lVf      
2016 01  07.31283  03 04 13.910  +17 04 56.88  25.0w 15VN166   568  C~2lVf      
2016 02  04.28927  03 03 51.023  +17 02 45.13  25.3w 15VN166   568  C~2lVf      
2016 02  10.27908  03 03 56.709  +17 03 01.44  25.1w 15VN166   568  C~2lVf      
2016 09  06.61138  03 18 52.608  +17 56 01.22  25.1w 15VN166   568  C~2lVf      
2016 10  10.40808  03 17 19.369  +17 48 52.35  24.9w 15VN166   568  C~2lVf      
2016 10  10.46643  03 17 19.111  +17 48 51.32  25.4w 15VN166   568  C~2lVf      
2016 10  27.49100  03 16 02.674  +17 43 23.61  25.7w 15VN166   568  C~2lVf      
2016 10  27.50259  03 16 02.607  +17 43 23.40  26.1w 15VN166   568  C~2lVf      
2016 11  02.59707  03 15 32.500  +17 41 15.76  25.9w 15VN166   568  C~2lVf      
2016 11  02.60863  03 15 32.446  +17 41 15.48  25.6w 15VN166   568  C~2lVf      
2016 11  03.51606  03 15 27.882  +17 40 55.95  25.5w 15VN166   568  C~2lVf      
2016 11  03.52763  03 15 27.822  +17 40 55.75  25.3w 15VN166   568  C~2lVf      
2016 12  29.37514  03 11 14.658  +17 22 59.05  25.5w 15VN166   568  C~2lVf      
2017 01  02.38235  03 11 03.025  +17 22 07.90  24.9w 15VN166   568  C~2lVf      
2017 01  26.27742  03 10 24.545  +17 19 09.14  25.9w 15VN166   568  C~2lVf      
2017 09  15.58856  03 25 07.482  +18 08 46.09        15VN166   568  C~2lVf      
2017 09  22.57478  03 24 51.657  +18 07 31.62        15VN166   568  C~2lVf      
2017 12  16.34929  03 18 36.352  +17 41 35.16  25.7w 15VN166   568  C~2lVf      
2017 12  16.36856  03 18 36.273  +17 41 34.76  25.5w 15VN166   568  C~2lVf      

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     0.10       0.00    -0.01
     2   0.0003     -8.87     0.13      -0.18    -0.02
     3   0.0165   -456.38    -0.11     -10.30    -0.05
     4   0.7315  10184.28    -0.10    -443.64    -0.02
     5   0.8028  10145.22     0.17    -494.03     0.10
     6   0.8899   8822.03    -0.02    -555.01    -0.00
     7   0.8901   8818.48     0.02    -555.24    -0.15
     8   0.9718   6722.09    -0.12    -608.59     0.09
     9   0.9719   6718.87    -0.06    -608.65     0.08
    10   0.9720   6715.67     0.02    -608.75     0.04
    11   0.9805   6478.34    -0.17    -613.96     0.05
    12   0.9992   5952.21    -0.08    -625.32     0.16
    13   0.9993   5948.73     0.06    -625.53     0.01
    14   1.0513   4560.20    -0.00    -655.58     0.05
    15   1.0702   4105.94     0.08    -665.93     0.11
    16   1.0704   4102.18     0.06    -666.31    -0.21
    17   1.1224   3102.43    -0.14    -693.04     0.07
    18   1.1387   2879.55    -0.05    -701.23    -0.08
    19   1.2153   2527.67     0.01    -737.16    -0.01
    20   1.2317   2610.56 (   0.18)   -744.04 (   0.60)
    21   1.8048  15842.03    -0.02   -1104.04     0.19
    22   1.8973  14437.79     0.18   -1174.21    -0.10
    23   1.8975  14433.95    -0.06   -1174.24    -0.05
    24   1.9441  13289.26    -0.03   -1206.27    -0.06
    25   1.9441  13288.28    -0.16   -1206.23     0.00
    26   1.9608  12837.85     0.12   -1216.87     0.12
    27   1.9609  12837.03     0.18   -1216.94     0.07
    28   1.9633  12768.71    -0.03   -1218.70    -0.11
    29   1.9634  12767.82    -0.03   -1218.67    -0.06
    30   2.1163   8980.29    -0.05   -1298.31    -0.11
    31   2.1272   8805.81     0.14   -1303.04    -0.31
    32   2.1927   8226.11     0.06   -1327.57     0.03
    33   2.8287  21252.01     0.02   -1723.14     0.01
    34   2.8478  21012.49    -0.07   -1738.95     0.02
    35   3.0799  15392.18    -0.03   -1883.17     0.12
    36   3.0800  15390.98    -0.02   -1883.26     0.04

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.

15VN166    quality flag:3

Type:          3:1EE     3:1EE     3:1EE
Type:                              3:1II

axisobj        63.761    63.840    63.683
ecceobj         0.489     0.490     0.488
incobj          6.014     6.014     6.014
qmin           31.623    31.759    31.463
qmax           95.450    95.335    95.547
amean          62.631    62.630    62.631
amin           61.733    61.687    61.818
amax           63.857    63.886    63.873
emean           0.484     0.482     0.484
emin            0.471     0.471     0.471
emax            0.496     0.493     0.497
imean           6.012     6.750     5.632
imin            5.555     6.398     4.442
imax            6.967     7.138     6.966
excite_mean     0.495     0.496     0.494
fracstop        1.000     1.000     1.000
cjmean          2.991     2.991     2.992

libcent 0        73.2      81.6      70.0
libamp  0        30.2      48.0      18.4
libcent 1      -180.0    -180.0     275.5
libamp  1      -180.0    -180.0      51.0
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       146.1     201.5     103.7
kozaiamp         34.6      87.3      18.6