Orbit Fit and Astrometric record for 15VE168

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: 15VE168   
# Created Fri Feb 22 02:10:30 2019
# Orbit generated from Bernstein formalism
# Fitting   35 observations of   35
# Arc:   2.19y
# First observation: 2014/11/17
#  Last observation: 2017/01/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000127   0.035339  -0.000007  -0.001129   0.028259   0.000000
# Chi-squared of fit:     4.86 DOF:   64 RMS:  0.07
# Min/Max residuals:    -0.17    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.958634E-05  3.595445E-02 -9.069230E-07 -1.149824E-03  2.851371E-02  4.525542E-03
# Covariance matrix:
  3.4854E-13 -4.9173E-13 -4.1153E-15  1.1169E-14 -1.8081E-13 -4.4455E-12
 -4.9173E-13  9.7747E-13  1.0016E-14 -2.6792E-14  3.8679E-13  1.0727E-11
 -4.1153E-15  1.0016E-14  1.9329E-13 -1.2940E-13  4.0662E-15  1.2494E-13
  1.1169E-14 -2.6792E-14 -1.2940E-13  1.1182E-13 -1.1729E-14 -3.3220E-13
 -1.8081E-13  3.8679E-13  4.0662E-15 -1.1729E-14  2.7248E-13  4.5569E-12
 -4.4455E-12  1.0727E-11  1.2494E-13 -3.3220E-13  4.5569E-12  1.3333E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.063790   47.382849   -0.124076   -0.018067   -0.981482  2456978.901288
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:            6.77498 +/-     0.014
Argument of Peri:      187.18887 +/-     0.050
Long of Asc Node:      198.14361 +/-     0.008
Inclination:             2.10479 +/-     0.000
Eccentricity:         0.48849331 +/-    0.0002
Semi-Major Axis:     68.75583022 +/-    0.0180
Time of Perihelion: 2453051.5626 +/-       8.1
Perihelion:          35.16906743 +/-    0.0162
Aphelion:           102.34259302 +/-    0.0299
Period (y)              570.1282 +/-      0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.31244757 +/-    0.0004
Ecliptic Y           26.61194070 +/-    0.0005
Ecliptic Z           -0.65116712 +/-    0.0000
Ecliptic XDOT        -0.00225202 +/-    0.0000
Ecliptic YDOT         0.00265078 +/-    0.0000
Ecliptic ZDOT        -0.00011835 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.05155356 +/-    0.0005
Geocenter to KBO     35.07084602 +/-    0.0006
# Hcoef:  8.67

The following table shows the complete astrometric record for 15VE168. 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 (15VE168) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.40051  03 00 55.219  +16 00 00.13  23.9r 15VE168   568  C~2lVl      
2014 11  17.51464  03 00 54.598  +15 59 57.30  24.1r 15VE168   568  C~2lVl      
2014 11  19.30670  03 00 44.979  +15 59 16.25  24.2r 15VE168   568  C~2lVl      
2014 11  23.41007  03 00 23.194  +15 57 43.40  23.8r 15VE168   568  C~2lVl      
2015 08  11.59273  03 14 02.726  +16 52 19.23  24.6w 15VE168   568  C~2lVl      
2015 09  06.62350  03 14 05.908  +16 51 26.70  24.5w 15VE168   568  C~2lVl      
2015 09  12.51312  03 13 56.562  +16 50 35.91  24.3w 15VE168   568  C~2lVl      
2015 10  07.43992  03 12 40.396  +16 44 43.12  24.1w 15VE168   568  C~2lVl      
2015 10  07.44703  03 12 40.345  +16 44 43.01  24.3w 15VE168   568  C~2lVl      
2015 10  08.45165  03 12 36.196  +16 44 24.74  24.4w 15VE168   568  C~2lVl      
2015 10  08.51072  03 12 35.946  +16 44 23.66  24.3w 15VE168   568  C~2lVl      
2015 11  07.35903  03 10 08.348  +16 33 56.47  24.0r 15VE168   568  C~2lVl      
2015 11  07.40112  03 10 08.114  +16 33 55.50  24.1r 15VE168   568  C~2lVl      
2015 11  07.44330  03 10 07.881  +16 33 54.52  24.5r 15VE168   568  C~2lVl      
2015 11  10.52886  03 09 51.069  +16 32 44.75  24.5w 15VE168   568  C~2lVl      
2015 11  17.37547  03 09 13.749  +16 30 10.67  24.4w 15VE168   568  C~2lVl      
2015 11  17.42215  03 09 13.493  +16 30 09.60  24.0w 15VE168   568  C~2lVl      
2015 12  06.38432  03 07 34.977  +16 23 29.02  24.2w 15VE168   568  C~2lVl      
2015 12  13.31874  03 07 02.804  +16 21 20.40  24.5w 15VE168   568  C~2lVl      
2015 12  13.37723  03 07 02.542  +16 21 19.38  24.2w 15VE168   568  C~2lVl      
2016 01  01.37186  03 05 52.180  +16 16 45.30  24.3w 15VE168   568  C~2lVl      
2016 01  07.31862  03 05 36.680  +16 15 47.85  24.0w 15VE168   568  C~2lVl      
2016 02  04.29505  03 05 14.572  +16 14 52.21  24.5w 15VE168   568  C~2lVl      
2016 02  04.30157  03 05 14.574  +16 14 52.27  24.5w 15VE168   568  C~2lVl      
2016 02  10.28486  03 05 21.343  +16 15 28.14  24.3w 15VE168   568  C~2lVl      
2016 09  07.62568  03 22 10.428  +17 18 30.68  24.8w 15VE168   568  C~2lVl      
2016 09  26.58416  03 21 28.281  +17 15 08.07  24.4w 15VE168   568  C~2lVl      
2016 10  09.54522  03 20 40.717  +17 11 42.95  24.6w 15VE168   568  C~2lVl      
2016 10  09.61729  03 20 40.410  +17 11 41.63  23.8w 15VE168   568  C~2lVl      
2016 11  02.52573  03 18 44.637  +17 03 47.25  24.2w 15VE168   568  C~2lVl      
2016 11  04.40084  03 18 34.608  +17 03 07.01  24.6w 15VE168   568  C~2lVl      
2016 12  24.29598  03 14 26.063  +16 47 03.97  24.9w 15VE168   568  C~2lVl      
2017 01  02.39822  03 13 55.712  +16 45 13.53  24.5w 15VE168   568  C~2lVl      
2017 01  26.32220  03 13 15.212  +16 43 04.73  24.2w 15VE168   568  C~2lVl      
2017 01  26.32908  03 13 15.207  +16 43 04.75  24.1w 15VE168   568  C~2lVl      

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     -9.39     0.08      -0.21    -0.14
  3   0.0052   -154.03    -0.10      -0.74     0.02
  4   0.0165   -481.62    -0.07      -1.71     0.02
  5   0.7315  11769.03    -0.01     -66.78     0.00
  6   0.8028  11799.28    -0.17    -129.63     0.05
  7   0.8189  11655.99     0.09    -143.12     0.02
  8   0.8872  10504.50     0.25    -192.90    -0.07
  9   0.8872  10503.77    -0.04    -192.81     0.03
 10   0.8899  10441.29    -0.04    -194.55    -0.02
 11   0.8901  10437.54    -0.01    -194.63    -0.03
 12   0.9718   8221.39     0.03    -230.73     0.09
 13   0.9719   8217.88     0.00    -230.76     0.07
 14   0.9721   8214.39     0.00    -230.80     0.04
 15   0.9805   7962.41    -0.05    -232.83     0.02
 16   0.9992   7403.29    -0.07    -236.24    -0.00
 17   0.9994   7399.45    -0.04    -236.28    -0.04
 18   1.0513   5925.11    -0.10    -237.12     0.02
 19   1.0703   5444.20    -0.02    -234.59     0.01
 20   1.0704   5440.29     0.02    -234.54     0.00
 21   1.1224   4390.43     0.02    -220.87    -0.07
 22   1.1387   4159.95    -0.13    -214.83     0.00
 23   1.2153   3838.44     0.15    -180.78    -0.03
 24   1.2153   3838.48     0.12    -180.73     0.01
 25   1.2317   3942.10     0.05    -173.06    -0.07
 26   1.8076  18970.18    -0.03    -365.61    -0.01
 27   1.8595  18329.61     0.09    -407.70    -0.02
 28   1.8950  17612.94     0.02    -431.59     0.08
 29   1.8952  17608.32     0.01    -431.74     0.04
 30   1.9606  15871.18    -0.01    -462.44    -0.03
 31   1.9658  15720.97    -0.00    -464.05    -0.04
 32   2.1024  12009.63    -0.04    -460.07    -0.02
 33   2.1273  11558.57     0.02    -451.25    -0.06
 34   2.1928  10961.70    -0.03    -421.08     0.01
 35   2.1928  10961.64    -0.05    -421.04     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.

15VE168    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        69.946    70.017    69.876
ecceobj         0.497     0.498     0.497
incobj          2.098     2.098     2.098
qmin           34.366    34.380    34.258
qmax          105.370   104.967   108.348
amean          68.166    66.898    68.498
amin           66.244    64.242    65.795
amax           70.209    70.017    71.661
emean           0.484     0.474     0.488
emin            0.466     0.447     0.466
emax            0.501     0.500     0.512
imean           3.065     2.883     3.058
imin            2.532     2.415     2.584
imax            3.813     3.528     3.885
excite_mean     0.487     0.476     0.490
fracstop        1.000     1.000     1.000
cjmean          3.070     3.072     3.069

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       178.5     185.9     175.4
kozaiamp        180.0     179.9     179.8