Orbit Fit and Astrometric record for 15VF167

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: 15VF167   
# Created Wed Dec  8 02:13:40 2021
# Orbit generated from Bernstein formalism
# Fitting     41 observations of     41
# Arc:   2.19y
# First observation: 2014/11/17
#  Last observation: 2017/01/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000100   0.022108  -0.000028   0.016382   0.024983   0.000000
# Chi-squared of fit:     5.79 DOF:     76 RMS:  0.07
# Min/Max residuals:    -0.18    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.411140E-05  2.205890E-02  1.026023E-05  1.639007E-02  2.499886E-02 -2.281124E-03
# Covariance matrix:
  2.3593E-13 -2.7035E-13  5.0334E-14 -1.3123E-13 -1.4050E-13 -3.3479E-12
 -2.7035E-13  5.1311E-13 -1.3195E-13  3.4481E-13  2.8863E-13  8.7999E-12
  5.0334E-14 -1.3195E-13  1.9915E-13 -2.0014E-13 -7.8066E-14 -2.6926E-12
 -1.3123E-13  3.4481E-13 -2.0014E-13  3.4886E-13  2.0289E-13  7.0438E-12
 -1.4050E-13  2.8863E-13 -7.8066E-14  2.0289E-13  2.8095E-13  5.1737E-12
 -3.3479E-12  8.7999E-12 -2.6926E-12  7.0438E-12  5.1737E-12  1.7979E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.071386   48.058173   -0.110242   -0.035396   -0.982678  2456978.772168
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          347.78604 +/-     0.064
Argument of Peri:       18.69234 +/-     0.120
Long of Asc Node:       50.93454 +/-     0.000
Inclination:            36.66146 +/-     0.001
Eccentricity:         0.27520061 +/-    0.0002
Semi-Major Axis:     55.65002355 +/-    0.0087
Time of Perihelion: 2462115.0846 +/-      26.7
Perihelion:          40.33510336 +/-    0.0139
Aphelion:            70.96494374 +/-    0.0166
Period (y)              415.1511 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.29093294 +/-    0.0006
Ecliptic Y           30.54143219 +/-    0.0006
Ecliptic Z           -1.44545414 +/-    0.0000
Ecliptic XDOT        -0.00192476 +/-    0.0000
Ecliptic YDOT         0.00147230 +/-    0.0000
Ecliptic ZDOT         0.00180298 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.98369723 +/-    0.0006
Geocenter to KBO     40.00181986 +/-    0.0008
# Hcoef:  8.43

The following table shows the complete astrometric record for 15VF167. 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 (15VF167) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.27139  03 04 46.582  +15 13 10.87  24.6r 15VF167   568  C~2lVi      
2014 11  17.38009  03 04 46.001  +15 13 09.65  24.6r 15VF167   568  C~2lVi      
2014 11  17.49387  03 04 45.402  +15 13 08.22  24.7r 15VF167   568  C~2lVi      
2014 11  19.28114  03 04 36.016  +15 12 47.44  24.7r 15VF167   568  C~2lVi      
2014 11  23.38468  03 04 14.648  +15 12 00.85  24.5r 15VF167   568  C~2lVi      
2015 08  11.59273  03 13 53.869  +16 35 03.55  24.8w 15VF167   568  C~2lVi      
2015 09  06.62350  03 13 43.046  +16 37 35.17  24.8w 15VF167   568  C~2lVi      
2015 09  12.51312  03 13 31.658  +16 37 35.62  24.9w 15VF167   568  C~2lVi      
2015 10  07.43992  03 12 11.156  +16 35 39.39  24.8w 15VF167   568  C~2lVi      
2015 10  07.44703  03 12 11.136  +16 35 39.33  24.8w 15VF167   568  C~2lVi      
2015 10  08.45165  03 12 06.938  +16 35 31.19  24.6w 15VF167   568  C~2lVi      
2015 10  08.51072  03 12 06.685  +16 35 30.68  25.1w 15VF167   568  C~2lVi      
2015 11  07.35903  03 09 40.511  +16 30 15.77  24.5r 15VF167   568  C~2lVi      
2015 11  07.40112  03 09 40.281  +16 30 15.26  24.3r 15VF167   568  C~2lVi      
2015 11  07.44330  03 09 40.053  +16 30 14.74  24.2r 15VF167   568  C~2lVi      
2015 11  10.52886  03 09 23.564  +16 29 37.85  24.7w 15VF167   568  C~2lVi      
2015 11  17.37547  03 08 46.962  +16 28 16.96  24.6w 15VF167   568  C~2lVi      
2015 11  17.42215  03 08 46.709  +16 28 16.44  24.5w 15VF167   568  C~2lVi      
2015 12  06.38432  03 07 09.609  +16 24 54.79  24.8w 15VF167   568  C~2lVi      
2015 12  13.31874  03 06 37.461  +16 23 56.35  24.1w 15VF167   568  C~2lVi      
2015 12  13.37723  03 06 37.214  +16 23 55.92  24.8w 15VF167   568  C~2lVi      
2016 01  01.37186  03 05 24.910  +16 22 23.54  24.9w 15VF167   568  C~2lVi      
2016 01  07.31862  03 05 08.056  +16 22 19.10  24.9w 15VF167   568  C~2lVi      
2016 02  10.28486  03 04 36.842  +16 26 22.19  24.6w 15VF167   568  C~2lVi      
2016 10  10.40808  03 15 59.552  +17 49 42.11  24.8w 15VF167   568  C~2lVi      
2016 10  10.46643  03 15 59.301  +17 49 41.79  24.6w 15VF167   568  C~2lVi      
2016 10  27.49100  03 14 37.742  +17 47 07.31  24.8w 15VF167   568  C~2lVi      
2016 10  27.50259  03 14 37.678  +17 47 07.22  24.6w 15VF167   568  C~2lVi      
2016 11  02.59707  03 14 05.793  +17 46 01.49  24.6w 15VF167   568  C~2lVi      
2016 11  02.60863  03 14 05.734  +17 46 01.32  25.0w 15VF167   568  C~2lVi      
2016 11  03.51606  03 14 00.914  +17 45 51.25  24.6w 15VF167   568  C~2lVi      
2016 11  03.52763  03 14 00.856  +17 45 51.14  24.6w 15VF167   568  C~2lVi      
2016 12  28.38756  03 09 34.931  +17 37 14.79  24.7w 15VF167   568  C~2lVi      
2016 12  29.35312  03 09 31.639  +17 37 11.01  24.5w 15VF167   568  C~2lVi      
2016 12  29.37514  03 09 31.562  +17 37 10.98  24.8w 15VF167   568  C~2lVi      
2016 12  29.38063  03 09 31.538  +17 37 10.94  24.9w 15VF167   568  C~2lVi      
2017 01  01.25010  03 09 22.187  +17 37 01.31  24.8w 15VF167   568  C~2lVi      
2017 01  02.36014  03 09 18.733  +17 36 58.31  24.9w 15VF167   568  C~2lVi      
2017 01  02.38235  03 09 18.662  +17 36 58.18  24.8w 15VF167   568  C~2lVi      
2017 01  02.38784  03 09 18.642  +17 36 58.20  24.9w 15VF167   568  C~2lVi      
2017 01  26.27742  03 08 32.338  +17 37 42.42  24.7w 15VF167   568  C~2lVi      

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    -0.03       0.00     0.02
     2   0.0003     -8.42    -0.02       1.14     0.06
     3   0.0006    -17.15     0.10       2.16    -0.05
     4   0.0055   -153.47    -0.05      19.63     0.10
     5   0.0167   -463.61    -0.07      60.19     0.03
     6   0.7319   8935.12     0.04    2596.99    -0.11
     7   0.8032   8825.15     0.11    2784.61     0.05
     8   0.8193   8667.18     0.02    2828.47    -0.03
     9   0.8875   7519.02    -0.18    3024.36     0.04
    10   0.8875   7518.73    -0.04    3024.38    -0.00
    11   0.8903   7458.32    -0.05    3032.64    -0.01
    12   0.8905   7454.67    -0.04    3033.12    -0.04
    13   0.9722   5343.27     0.14    3293.79     0.07
    14   0.9723   5339.94     0.11    3294.19     0.06
    15   0.9724   5336.64     0.11    3294.58     0.04
    16   0.9809   5098.16    -0.01    3323.07    -0.08
    17   0.9996   4569.10    -0.04    3387.59    -0.04
    18   0.9997   4565.45    -0.03    3388.07    -0.02
    19   1.0516   3165.65     0.16    3573.67    -0.04
    20   1.0706   2704.54    -0.15    3643.76    -0.03
    21   1.0708   2701.00     0.11    3644.32    -0.09
    22   1.1228   1674.76    -0.01    3840.67    -0.08
    23   1.1391   1440.27    -0.15    3903.10    -0.02
    24   1.2321   1075.39     0.04    4260.61     0.06
    25   1.8977  11863.14    -0.06    6451.01    -0.03
    26   1.8979  11859.59     0.07    6451.64     0.04
    27   1.9445  10691.25     0.01    6608.25     0.02
    28   1.9445  10690.34    -0.03    6608.40     0.07
    29   1.9612  10232.34    -0.03    6665.04     0.01
    30   1.9612  10231.48     0.00    6665.10    -0.04
    31   1.9637  10162.22    -0.09    6673.56    -0.04
    32   1.9637  10161.39    -0.02    6673.68    -0.03
    33   2.1139   6353.38    -0.09    7189.85    -0.02
    34   2.1166   6306.98     0.08    7198.90    -0.02
    35   2.1166   6305.91     0.09    7199.17     0.04
    36   2.1167   6305.57     0.01    7199.23     0.04
    37   2.1245   6174.06     0.08    7226.02    -0.01
    38   2.1276   6125.64    -0.00    7236.46     0.02
    39   2.1276   6124.62    -0.04    7236.61    -0.04
    40   2.1276   6124.35    -0.07    7236.71     0.00
    41   2.1930   5498.27     0.03    7458.47     0.10

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.

15VF167    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE
Type:                   5:2EII          

axisobj        56.105    56.124    56.087
ecceobj         0.279     0.280     0.279
incobj         36.569    36.569    36.569
qmin           32.970    39.987    33.804
qmax           79.161    71.825    78.379
amean          55.461    55.461    55.461
amin           54.788    54.871    54.781
amax           56.313    56.124    56.359
emean           0.304     0.227     0.320
emin            0.237     0.204     0.244
emax            0.406     0.280     0.391
imean          34.731    36.664    34.272
imin           31.592    35.690    32.302
imax           36.489    37.109    36.380
excite_mean     0.648     0.639     0.650
fracstop        1.000     1.000     1.000
cjmean          2.664     2.664     2.664

libcent 0       178.9     180.5     179.5
libamp  0       104.0     119.0      94.5
libcent 1      -180.0     191.7    -180.0
libamp  1      -180.0     118.8    -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       263.9       7.0     267.2
kozaiamp        180.0     180.0     180.0