Orbit Fit and Astrometric record for 15VJ167

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: 15VJ167   
# Created Fri Dec  3 02:13:38 2021
# Orbit generated from Bernstein formalism
# Fitting     41 observations of     41
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000176   0.025589  -0.000010   0.001047   0.025600   0.000000
# Chi-squared of fit:     5.50 DOF:     76 RMS:  0.06
# Min/Max residuals:    -0.19    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.448580E-05  2.535340E-02  2.613750E-07  1.038404E-03  2.551846E-02 -5.249754E-03
# Covariance matrix:
  2.4464E-13 -2.7416E-13  4.3395E-15 -8.0740E-15 -1.1254E-13 -2.5985E-12
 -2.7416E-13  4.3616E-13 -8.3706E-15  1.5730E-14  2.0521E-13  5.0444E-12
  4.3395E-15 -8.3706E-15  1.4491E-13 -8.0956E-14 -5.1639E-15 -1.1262E-13
 -8.0740E-15  1.5730E-14 -8.0956E-14  6.0237E-14  8.3983E-15  2.1056E-13
 -1.1254E-13  2.0521E-13 -5.1639E-15  8.3983E-15  2.2647E-13  2.8417E-12
 -2.5985E-12  5.0444E-12 -1.1262E-13  2.1056E-13  2.8417E-12  6.7647E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.660183   49.328604   -0.089215   -0.045586   -0.984387  2456978.818008
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          295.50114 +/-     0.024
Argument of Peri:       40.29342 +/-     0.015
Long of Asc Node:       97.15526 +/-     0.006
Inclination:             3.50684 +/-     0.000
Eccentricity:         0.20844213 +/-    0.0003
Semi-Major Axis:     42.29471314 +/-    0.0068
Time of Perihelion: 2474970.6912 +/-       5.2
Perihelion:          33.47871289 +/-    0.0149
Aphelion:            51.11071339 +/-    0.0162
Period (y)              275.0663 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.08310671 +/-    0.0005
Ecliptic Y           30.49698578 +/-    0.0006
Ecliptic Z           -1.81877958 +/-    0.0000
Ecliptic XDOT        -0.00243070 +/-    0.0000
Ecliptic YDOT         0.00134499 +/-    0.0000
Ecliptic ZDOT         0.00013753 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.17091680 +/-    0.0005
Geocenter to KBO     39.18731225 +/-    0.0007
# Hcoef:  8.14

The following table shows the complete astrometric record for 15VJ167. 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 (15VJ167) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.31723  03 10 30.047  +14 59 53.89  24.2r 15VJ167   568  C~2lVi      
2014 11  17.42609  03 10 29.462  +14 59 51.60  24.4r 15VJ167   568  C~2lVi      
2014 11  17.54029  03 10 28.874  +14 59 49.46  23.7r 15VJ167   568  C~2lVi      
2014 11  19.33914  03 10 19.686  +14 59 14.30  24.3r 15VJ167   568  C~2lVi      
2014 11  23.44182  03 09 58.873  +14 57 55.90  24.2r 15VJ167   568  C~2lVi      
2015 09  07.62490  03 20 51.590  +15 45 56.62  24.3w 15VJ167   568  C~2lVi      
2015 09  12.48855  03 20 43.919  +15 45 12.37  24.7w 15VJ167   568  C~2lVi      
2015 10  07.53269  03 19 31.722  +15 39 33.48  24.3w 15VJ167   568  C~2lVi      
2015 10  07.59208  03 19 31.495  +15 39 32.57  24.4w 15VJ167   568  C~2lVi      
2015 10  09.57195  03 19 23.735  +15 38 59.11  24.2w 15VJ167   568  C~2lVi      
2015 11  07.34843  03 17 09.013  +15 29 54.56  24.1r 15VJ167   568  C~2lVi      
2015 11  07.39058  03 17 08.801  +15 29 53.76  24.0r 15VJ167   568  C~2lVi      
2015 11  07.43274  03 17 08.576  +15 29 52.93  24.1r 15VJ167   568  C~2lVi      
2015 11  10.51713  03 16 52.661  +15 28 52.04  24.4w 15VJ167   568  C~2lVi      
2015 11  10.54648  03 16 52.503  +15 28 51.48  24.2w 15VJ167   568  C~2lVi      
2015 11  17.36382  03 16 17.149  +15 26 38.29  24.3w 15VJ167   568  C~2lVi      
2015 11  17.41043  03 16 16.914  +15 26 37.37  24.1w 15VJ167   568  C~2lVi      
2015 12  06.37266  03 14 42.041  +15 20 56.92  24.3w 15VJ167   568  C~2lVi      
2015 12  13.30706  03 14 10.498  +15 19 10.38  24.3w 15VJ167   568  C~2lVi      
2015 12  13.36559  03 14 10.245  +15 19 09.57  24.2w 15VJ167   568  C~2lVi      
2016 01  01.36029  03 12 59.160  +15 15 32.05  24.6w 15VJ167   568  C~2lVi      
2016 01  07.30705  03 12 42.630  +15 14 50.15  24.3w 15VJ167   568  C~2lVi      
2016 02  04.34036  03 12 10.212  +15 14 47.51  24.7w 15VJ167   568  C~2lVi      
2016 02  11.22942  03 12 14.543  +15 15 37.35  24.6w 15VJ167   568  C~2lVi      
2016 09  07.58521  03 26 38.363  +16 11 25.91        15VJ167   568  C~2lVi      
2016 09  27.51883  03 25 54.271  +16 07 48.57  24.3w 15VJ167   568  C~2lVi      
2016 09  29.49637  03 25 48.024  +16 07 20.76  24.1w 15VJ167   568  C~2lVi      
2016 10  05.49953  03 25 27.164  +16 05 50.95  24.2w 15VJ167   568  C~2lVi      
2016 10  07.50403  03 25 19.623  +16 05 19.18  24.2w 15VJ167   568  C~2lVi      
2016 10  07.59973  03 25 19.235  +16 05 17.65  24.4w 15VJ167   568  C~2lVi      
2016 10  09.50422  03 25 11.804  +16 04 46.63  24.3w 15VJ167   568  C~2lVi      
2016 10  09.57681  03 25 11.522  +16 04 45.37  24.4w 15VJ167   568  C~2lVi      
2016 11  02.51417  03 23 21.204  +15 57 30.49  24.2w 15VJ167   568  C~2lVi      
2016 11  04.38927  03 23 11.647  +15 56 54.35  24.3w 15VJ167   568  C~2lVi      
2016 12  24.33677  03 19 10.480  +15 43 07.34        15VJ167   568  C~2lVi      
2016 12  28.44224  03 18 55.739  +15 42 25.19  24.4w 15VJ167   568  C~2lVi      
2017 01  02.43952  03 18 39.609  +15 41 41.78        15VJ167   568  C~2lVi      
2017 01  26.34976  03 17 53.849  +15 40 27.41  24.2w 15VJ167   568  C~2lVi      
2017 09  16.59057  03 32 16.872  +16 35 24.52  24.7w 15VJ167   568  C~2lVi      
2017 09  23.53642  03 32 00.790  +16 34 09.03  24.3w 15VJ167   568  C~2lVi      
2017 12  16.37785  03 25 36.695  +16 10 55.79  24.3w 15VJ167   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     0.25       0.00     0.08
     2   0.0003     -8.78    -0.04       0.07    -0.01
     3   0.0006    -17.56     0.07       0.29     0.08
     4   0.0055   -155.24    -0.10       2.17    -0.01
     5   0.0168   -466.81    -0.19       7.71     0.01
     6   0.8058   9405.60    -0.07     304.94    -0.01
     7   0.8191   9286.96     0.05     290.60    -0.01
     8   0.8877   8190.36    -0.07     231.67    -0.01
     9   0.8878   8186.95     0.05     231.64     0.05
    10   0.8932   8069.84    -0.04     228.27     0.02
    11   0.9720   6046.20    -0.14     208.02    -0.04
    12   0.9721   6043.03    -0.02     208.05    -0.04
    13   0.9723   6039.67    -0.08     208.10    -0.02
    14   0.9807   5801.50     0.12     209.40    -0.01
    15   0.9808   5799.15     0.07     209.46     0.03
    16   0.9994   5270.61    -0.00     214.64    -0.01
    17   0.9996   5267.09     0.14     214.64    -0.07
    18   1.0515   3853.13     0.02     246.83     0.03
    19   1.0705   3384.74    -0.06     264.56    -0.01
    20   1.0706   3381.00     0.06     264.75    -0.01
    21   1.1226   2331.39     0.01     327.56    -0.05
    22   1.1389   2089.61    -0.06     350.75    -0.05
    23   1.2157   1636.65     0.09     473.12    -0.04
    24   1.2345   1710.35    -0.07     504.46    -0.02
    25   1.8077  14648.60     0.02     517.46     0.03
    26   1.8623  13975.94    -0.00     466.02     0.05
    27   1.8677  13881.39     0.06     461.68    -0.08
    28   1.8841  13566.47    -0.05     450.24     0.02
    29   1.8896  13452.80     0.08     446.82     0.02
    30   1.8899  13446.98    -0.09     446.74     0.08
    31   1.8951  13335.05    -0.09     443.67     0.07
    32   1.8953  13330.78     0.08     443.47    -0.04
    33   1.9608  11675.91     0.03     424.77     0.06
    34   1.9660  11532.97     0.08     424.82    -0.00
    35   2.1027   7948.95    -0.02     517.78    -0.00
    36   2.1140   7732.13    -0.04     532.16     0.02
    37   2.1276   7495.60    -0.01     550.59    -0.04
    38   2.1931   6837.33    -0.02     650.44    -0.08
    39   2.8317  19759.83    -0.04     710.96     0.02
    40   2.8507  19515.00     0.01     693.93    -0.02
    41   3.0802  13776.96     0.03     711.36     0.06

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.

15VJ167    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.543    42.560    42.526
ecceobj         0.205     0.206     0.204
incobj          3.508     3.508     3.508
qmin           32.950    32.934    32.981
qmax           52.184    52.147    52.183
amean          42.327    42.327    42.327
amin           41.867    41.898    41.868
amax           42.845    42.831    42.856
emean           0.206     0.206     0.205
emin            0.191     0.192     0.190
emax            0.220     0.220     0.219
imean           1.975     1.957     2.050
imin            1.593     1.598     1.582
imax            2.690     2.566     2.891
excite_mean     0.209     0.209     0.208
fracstop        1.000     1.000     1.000
cjmean          3.030     3.030     3.031

libcent 0       181.1     180.2     180.7
libamp  0        72.4      63.4      80.9
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       185.8     178.5     200.8
kozaiamp        179.9     179.9     179.9