Orbit Fit and Astrometric record for 15VH165

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: 15VH165   
# Created Sat Dec  4 02:13:38 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     40 observations of     40
# Arc:   6.15y
# First observation: 2014/11/17
#  Last observation: 2021/01/11
# Chi-squared of fit:     3.74 DOF:     74 RMS:  0.05
# Min/Max residuals:    -0.12    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.708609E-05  3.476857E-02  4.412249E-06  8.372316E-03  3.072878E-02 -1.343078E-03
# Covariance matrix:
  1.8884E-13 -1.5523E-13  2.8623E-14 -3.3565E-14 -3.2555E-14 -6.4449E-13
 -1.5523E-13  1.7229E-13 -3.5199E-14  4.1360E-14  2.8105E-14  7.9469E-13
  2.8623E-14 -3.5199E-14  9.0986E-14 -3.6547E-14 -3.8509E-15 -1.8077E-13
 -3.3565E-14  4.1360E-14 -3.6547E-14  2.7084E-14  3.7706E-15  2.1296E-13
 -3.2555E-14  2.8105E-14 -3.8509E-15  3.7706E-15  1.0968E-13  6.7780E-14
 -6.4449E-13  7.9469E-13 -1.8077E-13  2.1296E-13  6.7780E-14  4.0951E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.938891   48.200635   -0.107885   -0.033132   -0.983018  2456978.777218
# Heliocentric elements and errors
Epoch:              2456978.5000  =  2014/11/17
Mean Anomaly:          348.81906 +/-     0.018
Argument of Peri:        7.46847 +/-     0.025
Long of Asc Node:       56.15324 +/-     0.000
Inclination:            13.67200 +/-     0.000
Eccentricity:         0.15607844 +/-    0.0000
Semi-Major Axis:     39.53138206 +/-    0.0022
Time of Perihelion: 2459798.0989 +/-       8.5
Perihelion:          33.36138549 +/-    0.0023
Aphelion:            45.70137862 +/-    0.0028
Period (y)              248.5543 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.25022068 +/-    0.0002
Ecliptic Y           25.05282292 +/-    0.0003
Ecliptic Z           -1.10090884 +/-    0.0000
Ecliptic XDOT        -0.00237651 +/-    0.0000
Ecliptic YDOT         0.00198944 +/-    0.0000
Ecliptic ZDOT         0.00074967 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.52506082 +/-    0.0002
Geocenter to KBO     32.54284273 +/-    0.0004
# Hcoef:  8.62

The following table shows the complete astrometric record for 15VH165. 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 (15VH165) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.27644  03 05 11.565  +15 23 10.51  24.3r 15VH165   568  C~2lVa      
2014 11  17.38513  03 05 10.881  +15 23 08.36  23.6r 15VH165   568  C~2lVa      
2014 11  17.49897  03 05 10.175  +15 23 06.12  23.9r 15VH165   568  C~2lVa      
2014 11  19.28749  03 04 59.384  +15 22 31.08  23.7r 15VH165   568  C~2lVa      
2014 11  23.39103  03 04 34.783  +15 21 12.49  23.8r 15VH165   568  C~2lVa      
2015 08  11.56405  03 18 07.706  +16 39 42.44  23.9w 15VH165   568  C~2lVa      
2015 09  06.61072  03 18 08.373  +16 40 36.59  24.2w 15VH165   568  C~2lVa      
2015 10  07.42237  03 16 31.561  +16 35 42.89  24.1w 15VH165   568  C~2lVa      
2015 10  08.43421  03 16 26.855  +16 35 27.89  24.0w 15VH165   568  C~2lVa      
2015 10  08.49327  03 16 26.574  +16 35 27.02  24.0w 15VH165   568  C~2lVa      
2015 11  07.34317  03 13 40.650  +16 26 35.24  23.9r 15VH165   568  C~2lVa      
2015 11  07.38533  03 13 40.386  +16 26 34.45  23.9r 15VH165   568  C~2lVa      
2015 11  07.42748  03 13 40.124  +16 26 33.64  24.0r 15VH165   568  C~2lVa      
2015 11  10.51130  03 13 21.177  +16 25 33.67  23.9w 15VH165   568  C~2lVa      
2015 11  17.35801  03 12 39.011  +16 23 21.18  24.0w 15VH165   568  C~2lVa      
2015 11  17.40462  03 12 38.717  +16 23 20.26  23.9w 15VH165   568  C~2lVa      
2015 12  06.38432  03 10 46.596  +16 17 41.21  24.0w 15VH165   568  C~2lVa      
2015 12  13.31874  03 10 09.648  +16 15 56.51  23.9w 15VH165   568  C~2lVa      
2015 12  13.37723  03 10 09.336  +16 15 55.70  24.2w 15VH165   568  C~2lVa      
2016 01  01.37186  03 08 47.136  +16 12 32.24  24.1w 15VH165   568  C~2lVa      
2016 01  07.31862  03 08 28.435  +16 11 58.74  24.1w 15VH165   568  C~2lVa      
2016 02  04.29505  03 07 55.329  +16 13 09.04  24.1w 15VH165   568  C~2lVa      
2016 02  04.30157  03 07 55.330  +16 13 09.13  24.2w 15VH165   568  C~2lVa      
2016 02  10.28486  03 08 00.736  +16 14 15.05  24.0w 15VH165   568  C~2lVa      
2016 09  07.62568  03 25 31.590  +17 37 56.76        15VH165   568  C~2lVa      
2016 09  26.58416  03 24 42.997  +17 35 58.64  24.1w 15VH165   568  C~2lVa      
2016 10  09.54522  03 23 48.992  +17 33 25.49  24.2w 15VH165   568  C~2lVa      
2016 10  09.61729  03 23 48.651  +17 33 24.44  24.3w 15VH165   568  C~2lVa      
2016 11  02.52573  03 21 37.503  +17 26 54.97  23.9w 15VH165   568  C~2lVa      
2016 11  04.40084  03 21 26.133  +17 26 20.85  23.8w 15VH165   568  C~2lVa      
2016 12  24.31334  03 16 41.371  +17 12 48.04        15VH165   568  C~2lVa      
2017 01  02.41556  03 16 05.562  +17 11 26.18        15VH165   568  C~2lVa      
2017 01  26.32908  03 15 14.297  +17 10 40.42  24.1w 15VH165   568  C~2lVa      
2017 09  16.60340  03 32 46.615  +18 33 59.51  24.1w 15VH165   568  C~2lVa      
2017 09  23.54254  03 32 27.940  +18 33 22.02  24.1w 15VH165   568  C~2lVa      
2017 12  13.39064  03 25 09.100  +18 13 32.66  23.8w 15VH165   568  C~2lVa      
2017 12  13.42791  03 25 08.890  +18 13 32.12  24.0w 15VH165   568  C~2lVa      
2021 01  11.162340 03 46 08.467  +20 56 53.45  24.0G 15VH165   G37  C~4UIf      
2021 01  11.221680 03 46 08.262  +20 56 52.92        15VH165   G37  C~4UIf      
2021 01  11.268930 03 46 08.104  +20 56 52.78        15VH165   G37  C~4UIf      

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     0.17       0.00     0.03
     2   0.0003      0.00    -0.04       0.00    -0.00
     3   0.0006      0.00    -0.09       0.00     0.01
     4   0.0055      0.00     0.08       0.00    -0.03
     5   0.0167      0.00     0.01       0.00    -0.03
     6   0.7318      0.00    -0.12       0.00    -0.04
     7   0.8031      0.00     0.01       0.00     0.07
     8   0.8875      0.00     0.09       0.00     0.02
     9   0.8902      0.00    -0.08       0.00     0.00
    10   0.8904      0.00    -0.05       0.00     0.00
    11   0.9721      0.00     0.03       0.00     0.01
    12   0.9722      0.00    -0.00       0.00     0.03
    13   0.9724      0.00     0.01       0.00     0.04
    14   0.9808      0.00    -0.01       0.00     0.06
    15   0.9995      0.00    -0.02       0.00     0.00
    16   0.9997      0.00    -0.06       0.00    -0.03
    17   1.0516      0.00     0.03       0.00    -0.05
    18   1.0706      0.00    -0.01       0.00    -0.00
    19   1.0708      0.00    -0.12       0.00     0.01
    20   1.1228      0.00    -0.01       0.00    -0.00
    21   1.1391      0.00     0.04       0.00     0.05
    22   1.2157      0.00     0.00       0.00    -0.05
    23   1.2157      0.00    -0.02       0.00    -0.02
    24   1.2321      0.00     0.08       0.00     0.01
    25   1.8079      0.00     0.04       0.00    -0.00
    26   1.8598      0.00     0.04       0.00     0.02
    27   1.8953      0.00     0.01       0.00    -0.03
    28   1.8955      0.00     0.11       0.00    -0.07
    29   1.9610      0.00    -0.04       0.00    -0.03
    30   1.9661      0.00     0.01       0.00    -0.03
    31   2.1028      0.00     0.00       0.00    -0.06
    32   2.1277      0.00     0.07       0.00     0.02
    33   2.1932      0.00    -0.04       0.00     0.02
    34   2.8318      0.00    -0.01       0.00    -0.03
    35   2.8508      0.00     0.04       0.00     0.10
    36   3.0722      0.00     0.06       0.00     0.02
    37   3.0723      0.00    -0.02       0.00     0.02
    38   6.1516      0.00    -0.09       0.00    -0.03
    39   6.1518      0.00    -0.02       0.00    -0.10
    40   6.1519      0.00     0.10       0.00     0.12

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.

15VH165    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.837    39.837    39.837
ecceobj         0.161     0.161     0.161
incobj         13.644    13.644    13.644
qmin           33.081    33.081    33.080
qmax           46.352    46.354    46.349
amean          39.457    39.457    39.457
amin           39.079    39.080    39.079
amax           39.881    39.881    39.881
emean           0.135     0.135     0.135
emin            0.112     0.112     0.112
emax            0.163     0.163     0.163
imean          12.893    12.893    12.893
imin           12.101    12.101    12.100
imax           13.703    13.703    13.703
excite_mean     0.261     0.261     0.261
fracstop        1.000     1.000     1.000
cjmean          2.974     2.974     2.974

libcent 0       179.8     179.9     179.8
libamp  0        62.1      62.1      62.0
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       181.7     181.8     181.7
kozaiamp        180.0     180.0     180.0