Orbit Fit and Astrometric record for 15VO166

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: 15VO166   
# Created Fri Dec  3 02:13:38 2021
# Orbit generated from Bernstein formalism
# Fitting     37 observations of     37
# Arc:   3.07y
# First observation: 2014/11/17
#  Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
   0.000044   0.006913  -0.000008  -0.001333   0.012182   0.000000
# Chi-squared of fit:    21.33 DOF:     68 RMS:  0.13
# Min/Max residuals:    -0.38    0.35
# Exact a, adot, b, bdot, g, gdot:
  8.434434E-06  7.012544E-03 -1.756130E-06 -1.352428E-03  1.231151E-02  3.946548E-03
# Covariance matrix:
  2.7006E-13 -2.7198E-13 -1.6383E-14  3.4423E-14 -1.9685E-13 -8.9433E-12
 -2.7198E-13  3.7646E-13  2.8444E-14 -5.8908E-14  2.9848E-13  1.5341E-11
 -1.6383E-14  2.8444E-14  1.5563E-13 -8.9271E-14  2.4306E-14  1.4269E-12
  3.4423E-14 -5.8908E-14 -8.9271E-14  7.3609E-14 -5.2377E-14 -2.9270E-12
 -1.9685E-13  2.9848E-13  2.4306E-14 -5.2377E-14  3.5812E-13  1.3553E-11
 -8.9433E-12  1.5341E-11  1.4269E-12 -2.9270E-12  1.3553E-11  7.6343E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.773935   47.685363   -0.118534   -0.047385   -0.981193  2456978.880868
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           72.92765 +/-     0.544
Argument of Peri:       66.17893 +/-     0.196
Long of Asc Node:      213.88387 +/-     0.003
Inclination:            11.28123 +/-     0.002
Eccentricity:         0.48831711 +/-    0.0021
Semi-Major Axis:     75.51414451 +/-    0.2036
Time of Perihelion: 2408415.8722 +/-     304.3
Perihelion:          38.63929566 +/-    0.1903
Aphelion:           112.38899337 +/-    0.3423
Period (y)              656.2218 +/-      2.65
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           55.18709235 +/-    0.0026
Ecliptic Y           60.79979938 +/-    0.0029
Ecliptic Z           -3.93107286 +/-    0.0002
Ecliptic XDOT        -0.00057709 +/-    0.0000
Ecliptic YDOT         0.00168232 +/-    0.0000
Ecliptic ZDOT        -0.00034277 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   82.20513427 +/-    0.0028
Geocenter to KBO     81.22482963 +/-    0.0039
# Hcoef:  5.90

The following table shows the complete astrometric record for 15VO166. 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 (15VO166) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.38009  03 04 05.844  +14 26 29.83  24.9r 15VO166   568  C~2lVf      
2014 11  17.49387  03 04 05.522  +14 26 28.41  24.6r 15VO166   568  C~2lVf      
2014 11  19.28114  03 04 00.858  +14 26 08.10  24.9r 15VO166   568  C~2lVf      
2014 11  23.38468  03 03 50.198  +14 25 22.20  25.3r 15VO166   568  C~2lVf      
2015 08  12.58178  03 08 24.791  +14 42 51.17  24.6w 15VO166   568  C~2lVf      
2015 08  12.58594  03 08 24.782  +14 42 51.32  25.3w 15VO166   568  C~2lVf      
2015 09  07.54100  03 08 15.343  +14 40 58.58  25.1w 15VO166   568  C~2lVf      
2015 10  07.48475  03 07 28.363  +14 36 33.30  25.3w 15VO166   568  C~2lVf      
2015 10  08.48746  03 07 26.236  +14 36 22.67  25.3w 15VO166   568  C~2lVf      
2015 10  08.55734  03 07 26.130  +14 36 21.86  25.0w 15VO166   568  C~2lVf      
2015 10  08.57055  03 07 26.086  +14 36 21.85  25.1w 15VO166   568  C~2lVf      
2015 11  06.30199  03 06 16.191  +14 30 50.69  24.8r 15VO166   568  C~2lVf      
2015 11  06.36535  03 06 16.024  +14 30 50.22  24.9r 15VO166   568  C~2lVf      
2015 11  06.43596  03 06 15.831  +14 30 49.11  25.2r 15VO166   568  C~2lVf      
2015 11  06.50529  03 06 15.656  +14 30 48.24  24.7r 15VO166   568  C~2lVf      
2015 11  07.52528  03 06 12.957  +14 30 36.49  24.9w 15VO166   568  C~2lVf      
2015 11  17.29127  03 05 47.246  +14 28 43.06  25.1w 15VO166   568  C~2lVf      
2015 11  17.34053  03 05 47.103  +14 28 42.50  25.0w 15VO166   568  C~2lVf      
2015 12  06.41351  03 04 59.103  +14 25 20.33  25.2w 15VO166   568  C~2lVf      
2016 01  01.40134  03 04 07.476  +14 22 02.28  25.4w 15VO166   568  C~2lVf      
2016 01  07.34755  03 03 59.106  +14 21 33.55  24.7w 15VO166   568  C~2lVf      
2016 02  04.27768  03 03 41.619  +14 20 58.03  25.3w 15VO166   568  C~2lVf      
2016 02  10.26747  03 03 42.908  +14 21 12.07  25.2w 15VO166   568  C~2lVf      
2016 09  25.60090  03 09 28.693  +14 40 24.55  25.2w 15VO166   568  C~2lVf      
2016 10  10.53578  03 08 59.382  +14 37 52.96  25.2w 15VO166   568  C~2lVf      
2016 10  10.54400  03 08 59.360  +14 37 52.91        15VO166   568  C~2lVf      
2016 11  03.55656  03 08 00.888  +14 33 17.80  25.2w 15VO166   568  C~2lVf      
2016 12  28.38005  03 05 52.125  +14 24 28.66  25.8w 15VO166   568  C~2lVf      
2016 12  28.38265  03 05 52.101  +14 24 28.83  26.2w 15VO166   568  C~2lVf      
2016 12  29.34821  03 05 50.514  +14 24 23.06  26.0w 15VO166   568  C~2lVf      
2017 01  01.24148  03 05 45.959  +14 24 07.20  25.4w 15VO166   568  C~2lVf      
2017 01  02.35263  03 05 44.279  +14 24 01.64  25.1w 15VO166   568  C~2lVf      
2017 01  02.35523  03 05 44.276  +14 24 01.49  25.1w 15VO166   568  C~2lVf      
2017 01  26.25843  03 05 21.775  +14 22 59.77  25.9w 15VO166   568  C~2lVf      
2017 09  17.60641  03 11 19.417  +14 43 31.69  25.6w 15VO166   568  C~2lVf      
2017 12  13.39993  03 08 00.347  +14 28 22.89  25.2w 15VO166   568  C~2lVf      
2017 12  13.43720  03 08 00.264  +14 28 22.61  25.5w 15VO166   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     0.12       0.00     0.00
     2   0.0003     -4.89    -0.17      -0.07    -0.03
     3   0.0052    -75.61    -0.02      -0.85     0.01
     4   0.0164   -237.12    -0.08      -2.11     0.07
     5   0.7343   3884.61     0.01     -87.25    -0.38
     6   0.7343   3884.53    -0.09     -87.07    -0.19
     7   0.8054   3722.01     0.01    -158.31     0.14
     8   0.8874   2993.53    -0.17    -227.72     0.06
     9   0.8901   2960.92    -0.27    -229.52     0.18
    10   0.8903   2959.22     0.35    -229.88    -0.06
    11   0.8903   2958.60     0.17    -229.72     0.13
    12   0.9690   1891.81     0.04    -270.57    -0.13
    13   0.9692   1889.35     0.14    -270.35     0.12
    14   0.9694   1886.35    -0.01    -270.65    -0.13
    15   0.9695   1883.66     0.12    -270.79    -0.22
    16   0.9723   1842.75    -0.06    -271.34     0.11
    17   0.9991   1452.54     0.03    -277.91     0.03
    18   0.9992   1450.39    -0.14    -277.87     0.07
    19   1.0514    724.43     0.32    -280.38    -0.15
    20   1.1226    -51.19    -0.05    -263.67     0.28
    21   1.1389   -176.02    -0.13    -257.65     0.09
    22   1.2153   -430.04    -0.21    -221.44     0.08
    23   1.2317   -408.15     0.33    -213.14    -0.02
    24   1.8569   4737.58     0.04    -480.10    -0.13
    25   1.8978   4286.83    -0.03    -510.69     0.02
    26   1.8978   4286.51    -0.07    -510.65     0.07
    27   1.9635   3394.59    -0.17    -544.61    -0.02
    28   2.1136   1450.80     0.12    -542.00    -0.19
    29   2.1136   1450.51    -0.10    -541.74     0.07
    30   2.1163   1426.75    -0.01    -540.95    -0.07
    31   2.1242   1358.76     0.10    -538.02    -0.03
    32   2.1272   1333.77    -0.02    -536.66     0.15
    33   2.1272   1333.68    -0.05    -536.79     0.01
    34   2.1927   1002.38    -0.09    -506.22     0.12
    35   2.8343   6336.15     0.08    -733.60    -0.04
    36   3.0719   3306.67    -0.02    -826.27    -0.03
    37   3.0720   3305.44    -0.01    -826.21     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.

15VO166    quality flag:2

Type:         4:1EEE  SCATNEAR  SCATNEAR

axisobj        76.390    77.018    75.783
ecceobj         0.489     0.495     0.483
incobj         11.210    11.211    11.210
qmin           37.304    37.468    37.864
qmax          116.818   117.389   114.942
amean          75.870    76.325    75.236
amin           74.645    75.085    74.171
amax           77.551    77.875    76.804
emean           0.494     0.496     0.484
emin            0.481     0.483     0.472
emax            0.508     0.509     0.497
imean          11.284    12.098    12.069
imin           10.572    11.466    11.545
imax           11.994    13.095    12.697
excite_mean     0.532     0.538     0.527
fracstop        1.000     1.000     1.000
cjmean          3.103     3.098     3.105

libcent 0       271.9    -180.0    -180.0
libamp  0        53.5    -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       119.8     187.4     168.8
kozaiamp         55.1     179.9     180.0