Orbit Fit and Astrometric record for 15VJ166

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: 15VJ166   
# Created Fri Dec  3 02:13:37 2021
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000177   0.036128  -0.000011  -0.002068   0.029756   0.000000
# Chi-squared of fit:     6.45 DOF:     54 RMS:  0.08
# Min/Max residuals:    -0.18    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.892721E-05  3.669872E-02 -1.128552E-06 -2.100598E-03  3.021742E-02  2.996665E-03
# Covariance matrix:
  4.0541E-13 -4.7208E-13 -9.8729E-15  1.9610E-14 -1.8050E-13 -3.1847E-12
 -4.7208E-13  7.0825E-13  1.7063E-14 -3.3484E-14  2.6793E-13  5.4588E-12
 -9.8729E-15  1.7063E-14  1.8695E-13 -1.0573E-13  6.6460E-15  1.4860E-13
  1.9610E-14 -3.3484E-14 -1.0573E-13  8.2256E-14 -1.4419E-14 -2.9111E-13
 -1.8050E-13  2.6793E-13  6.6460E-15 -1.4419E-14  2.5277E-13  2.2791E-12
 -3.1847E-12  5.4588E-12  1.4860E-13 -2.9111E-13  2.2791E-12  4.7484E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.668269   47.144794   -0.128153   -0.028406   -0.980713  2456978.901288
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           11.01729 +/-     0.021
Argument of Peri:      185.26660 +/-     0.042
Long of Asc Node:      201.07805 +/-     0.003
Inclination:             3.65473 +/-     0.000
Eccentricity:         0.29607944 +/-    0.0001
Semi-Major Axis:     47.66612023 +/-    0.0049
Time of Perihelion: 2453291.8751 +/-       7.0
Perihelion:          33.55316199 +/-    0.0062
Aphelion:            61.77907847 +/-    0.0082
Period (y)              329.0962 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.06918060 +/-    0.0004
Ecliptic Y           25.05763630 +/-    0.0004
Ecliptic Z           -0.96350210 +/-    0.0000
Ecliptic XDOT        -0.00226099 +/-    0.0000
Ecliptic YDOT         0.00245148 +/-    0.0000
Ecliptic ZDOT        -0.00019805 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.07345840 +/-    0.0004
Geocenter to KBO     33.09349651 +/-    0.0006
# Hcoef:  9.28

The following table shows the complete astrometric record for 15VJ166. 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 (15VJ166) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.40051  03 00 40.521  +15 21 11.08  24.2r 15VJ166   568  C~2lVe      
2014 11  19.30670  03 00 29.640  +15 20 23.68  24.8r 15VJ166   568  C~2lVe      
2014 11  23.41007  03 00 06.441  +15 18 43.28  24.2r 15VJ166   568  C~2lVe      
2015 08  11.61007  03 14 21.211  +16 14 45.41  25.4w 15VJ166   568  C~2lVe      
2015 09  06.62757  03 14 23.759  +16 13 04.10  24.9w 15VJ166   568  C~2lVe      
2015 09  12.51723  03 14 13.663  +16 12 00.14  24.7w 15VJ166   568  C~2lVe      
2015 10  07.45292  03 12 52.226  +16 05 07.76  25.0w 15VJ166   568  C~2lVe      
2015 10  08.45753  03 12 47.796  +16 04 47.05  24.9w 15VJ166   568  C~2lVe      
2015 10  08.51654  03 12 47.526  +16 04 45.77  25.0w 15VJ166   568  C~2lVe      
2015 11  07.36426  03 10 10.247  +15 53 08.41  24.3r 15VJ166   568  C~2lVe      
2015 11  07.40638  03 10 09.999  +15 53 07.32  24.4r 15VJ166   568  C~2lVe      
2015 11  07.44859  03 10 09.748  +15 53 06.39  24.5r 15VJ166   568  C~2lVe      
2015 11  10.53471  03 09 51.830  +15 51 49.89  24.8w 15VJ166   568  C~2lVe      
2015 11  17.38127  03 09 12.085  +15 49 02.16  24.5w 15VJ166   568  C~2lVe      
2015 11  17.42797  03 09 11.805  +15 49 00.99  24.6w 15VJ166   568  C~2lVe      
2015 12  06.39016  03 07 26.852  +15 41 49.51  24.7w 15VJ166   568  C~2lVe      
2015 12  13.32462  03 06 52.543  +15 39 32.58  24.9w 15VJ166   568  C~2lVe      
2015 12  13.38310  03 06 52.270  +15 39 31.48  24.7w 15VJ166   568  C~2lVe      
2016 01  01.37764  03 05 37.179  +15 34 44.36  24.9w 15VJ166   568  C~2lVe      
2016 02  05.26985  03 04 57.170  +15 33 07.62  24.8w 15VJ166   568  C~2lVe      
2016 09  07.56206  03 22 41.987  +16 37 49.13  24.9w 15VJ166   568  C~2lVe      
2016 09  26.62090  03 21 56.696  +16 33 41.56  24.6w 15VJ166   568  C~2lVe      
2016 11  02.51995  03 19 02.331  +16 20 53.41  24.9w 15VJ166   568  C~2lVe      
2016 11  04.39506  03 18 51.641  +16 20 09.10  24.7w 15VJ166   568  C~2lVe      
2016 12  24.30148  03 14 26.354  +16 02 52.69  24.9w 15VJ166   568  C~2lVe      
2017 01  02.40371  03 13 53.844  +16 00 58.55  24.8w 15VJ166   568  C~2lVe      
2017 01  26.29235  03 13 10.122  +15 58 55.30  25.3w 15VJ166   568  C~2lVe      
2017 09  15.58250  03 30 48.175  +17 00 05.56        15VJ166   568  C~2lVe      
2017 09  22.56874  03 30 31.624  +16 58 37.11  25.5w 15VJ166   568  C~2lVe      
2017 12  16.37785  03 23 25.550  +16 30 09.83  24.7w 15VJ166   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     0.06       0.00     0.01
     2   0.0052   -164.37     0.12      -1.32     0.02
     3   0.0165   -514.67    -0.14      -3.38    -0.00
     4   0.7316  12287.09    -0.09    -139.45    -0.02
     5   0.8028  12295.67     0.04    -247.05     0.09
     6   0.8189  12137.95    -0.12    -270.22    -0.01
     7   0.8872  10893.28     0.01    -355.85    -0.03
     8   0.8900  10826.03    -0.05    -358.78    -0.03
     9   0.8901  10821.93    -0.09    -358.97    -0.08
    10   0.9718   8444.79     0.08    -422.20     0.09
    11   0.9720   8441.04     0.07    -422.28     0.04
    12   0.9721   8437.30     0.06    -422.20     0.16
    13   0.9805   8167.29    -0.12    -426.05    -0.02
    14   0.9993   7568.89     0.04    -432.32    -0.04
    15   0.9994   7564.68    -0.04    -432.35    -0.06
    16   1.0513   5987.60     0.03    -435.46    -0.04
    17   1.0703   5473.15    -0.13    -431.75    -0.03
    18   1.0705   5469.05     0.00    -431.73    -0.08
    19   1.1225   4346.49    -0.03    -410.22    -0.03
    20   1.2180   3763.85     0.13    -343.98    -0.02
    21   1.8074  19648.30    -0.10    -678.74     0.02
    22   1.8596  18949.54     0.31    -751.96     0.01
    23   1.9606  16308.76    -0.03    -847.61     0.02
    24   1.9658  16147.67     0.03    -850.44     0.03
    25   2.1024  12169.37     0.17    -847.57     0.02
    26   2.1273  11685.58    -0.10    -833.23     0.04
    27   2.1927  11043.12    -0.01    -784.22    -0.00
    28   2.8287  26832.52     0.03   -1135.59    -0.06
    29   2.8478  26576.43     0.03   -1163.22    -0.04
    30   3.0800  20141.70    -0.18   -1285.33     0.05

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.

15VJ166    quality flag:3

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

axisobj        48.196    48.215    48.178
ecceobj         0.304     0.305     0.304
incobj          3.642     3.642     3.642
qmin           32.694    32.701    32.709
qmax           63.883    63.698    63.612
amean          47.797    47.797    47.797
amin           47.234    47.254    47.199
amax           48.533    48.495    48.552
emean           0.300     0.300     0.300
emin            0.284     0.285     0.284
emax            0.316     0.315     0.314
imean           3.613     3.707     3.727
imin            3.015     2.935     2.771
imax            4.217     4.195     4.301
excite_mean     0.307     0.307     0.307
fracstop        1.000     1.000     1.000
cjmean          3.028     3.028     3.029

libcent 0        76.5      75.2      78.0
libamp  0        32.2      28.6      36.3
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       209.7     201.2     146.1
kozaiamp        180.0     180.0     180.0