Orbit Fit and Astrometric record for 07VK302

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: 07VK302   
# Created Tue Nov 30 02:10:42 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     29 observations of     29
# Arc:  10.15y
# First observation: 2007/11/11
#  Last observation: 2018/01/05
# Chi-squared of fit:    10.14 DOF:     52 RMS:  0.10
# Min/Max residuals:    -0.27    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.207581E-05  1.863467E-02  5.684661E-06  7.537620E-03  2.195551E-02  4.115490E-04
# Covariance matrix:
  1.2730E-13 -2.8932E-14  6.2668E-16 -5.8502E-15  3.3521E-14 -8.0445E-14
 -2.8932E-14  9.0620E-14 -8.9185E-15  3.5560E-14  1.2967E-14  4.8832E-13
  6.2668E-16 -8.9185E-15  1.2114E-13 -1.6907E-14 -9.0638E-15 -5.0873E-14
 -5.8502E-15  3.5560E-14 -1.6907E-14  1.6897E-14  9.2284E-15  1.9779E-13
  3.3521E-14  1.2967E-14 -9.0638E-15  9.2284E-15  2.8965E-13  1.2586E-13
 -8.0445E-14  4.8832E-13 -5.0873E-14  1.9779E-13  1.2586E-13  2.7160E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.340437   28.393058   -0.339920   -0.247058   -0.901022  2454415.618444
# Heliocentric elements and errors
Epoch:              2454416.5000  =  2007/11/12
Mean Anomaly:          115.08209 +/-     0.150
Argument of Peri:      205.94622 +/-     0.141
Long of Asc Node:       61.27672 +/-     0.000
Inclination:            26.59125 +/-     0.000
Eccentricity:         0.03491165 +/-    0.0001
Semi-Major Axis:     45.72553214 +/-    0.0045
Time of Perihelion: 2418313.6208 +/-      47.3
Perihelion:          44.12917822 +/-    0.0054
Aphelion:            47.32188605 +/-    0.0056
Period (y)              309.2049 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.29967805 +/-    0.0009
Ecliptic Y           21.62547962 +/-    0.0005
Ecliptic Z          -12.04932573 +/-    0.0003
Ecliptic XDOT        -0.00083639 +/-    0.0000
Ecliptic YDOT         0.00218492 +/-    0.0000
Ecliptic ZDOT         0.00089277 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.44685580 +/-    0.0008
Geocenter to KBO     45.54668474 +/-    0.0011
# Hcoef:  6.94

The following table shows the complete astrometric record for 07VK302. 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 (07VK302) followed by the observatory code and reference code for the source of the astrometry.

2007 11  11.11769  02 07 11.54   -03 27 27.9   23.2R 07VK302   807  Cx2667      
2007 11  13.06886  02 07 03.33   -03 27 49.1   23.6R 07VK302   807  Cx2667      
2007 11  13.10366  02 07 03.19   -03 27 49.5   23.0I 07VK302   807  Cx2667      
2007 11  15.07472  02 06 55.00   -03 28 08.7   23.0R 07VK302   807  Cx2667      
2007 11  15.10808  02 06 54.86   -03 28 09.1   22.9I 07VK302   807  Cx2667      
2007 11  17.09917  02 06 46.73   -03 28 26.4   23.4R 07VK302   807  Cx2667      
2007 11  17.11081  02 06 46.68   -03 28 26.6   23.0I 07VK302   807  Cx2667      
2007 11  19.25820  02 06 38.02   -03 28 43.1   23.3R 07VK302   807  Cx2667      
2007 12  03.18042  02 05 46.45   -03 29 29.7   23.4R 07VK302   807  Cx2667      
2007 12  07.08460  02 05 33.69   -03 29 22.9   23.5R 07VK302   807  Cx2667      
2007 12  07.11403  02 05 33.58   -03 29 22.6   22.9I 07VK302   807  Cx2667      
2007 12  13.12667  02 05 15.71   -03 28 54.8   23.5R 07VK302   807  Cx2667      
2013 11  08.23010  02 27 41.066  +01 13 14.42  22.9r 07VK302   W84  C~4yHG      
2013 11  23.21306  02 26 37.727  +01 10 26.62  23.0i 07VK302   W84  C~4yHG      
2014 10  21.30882  02 32 22.899  +02 04 51.54  23.8r 07VK302   W84  C~4yHG      
2016 09  27.49201  02 40 37.24   +03 45 15.3   24.1g 07VK302   568  C~2eAJ      
2016 09  27.61245  02 40 36.83   +03 45 12.8   24.2g 07VK302   568  C~2eAJ      
2016 09  28.50135  02 40 33.81   +03 44 54.7   24.2g 07VK302   568  C~2eAJ      
2016 09  28.54927  02 40 33.64   +03 44 53.7   24.1g 07VK302   568  C~2eAJ      
2016 09  29.51325  02 40 30.32   +03 44 34.1   24.2g 07VK302   568  C~2eAJ      
2016 09  29.56047  02 40 30.15   +03 44 33.1   24.0g 07VK302   568  C~2eAJ      
2016 09  29.63378  02 40 29.89   +03 44 31.6   24.1g 07VK302   568  C~2eAJ      
2017 10  30.22222  02 41 48.769  +04 20 54.94  22.7i 07VK302   W84  C~4yHG      
2017 11  15.14825  02 40 38.510  +04 16 58.55  23.2i 07VK302   W84  C~4yHG      
2017 11  15.14962  02 40 38.500  +04 16 58.39  24.0r 07VK302   W84  C~4yHG      
2017 11  16.18058  02 40 34.025  +04 16 45.72  23.7g 07VK302   W84  C~4yHG      
2017 12  08.03933  02 39 06.193  +04 13 52.74  23.5i 07VK302   W84  C~4yHG      
2018 01  05.06124  02 37 49.663  +04 15 24.39  23.6r 07VK302   W84  C~4yHG      
2018 01  05.06261  02 37 49.657  +04 15 24.38  24.2g 07VK302   W84  C~4yHG      

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     0.28       0.00     0.05
     2   0.0053      0.00    -0.01       0.00    -0.07
     3   0.0054      0.00     0.11       0.00    -0.11
     4   0.0108      0.00    -0.11       0.00     0.03
     5   0.0109      0.00    -0.11       0.00    -0.06
     6   0.0164      0.00     0.12       0.00     0.11
     7   0.0164      0.00     0.09       0.00     0.01
     8   0.0223      0.00    -0.02       0.00     0.03
     9   0.0604      0.00    -0.06       0.00    -0.19
    10   0.0711      0.00    -0.05       0.00    -0.06
    11   0.0712      0.00    -0.27       0.00     0.16
    12   0.0876      0.00     0.07       0.00     0.14
    13   5.9935      0.00     0.10       0.00     0.19
    14   6.0345      0.00     0.08       0.00    -0.24
    15   6.9437      0.00    -0.14       0.00    -0.15
    16   8.8799      0.00    -0.03       0.00     0.10
    17   8.8802      0.00     0.05       0.00     0.05
    18   8.8826      0.00    -0.03       0.00     0.05
    19   8.8828      0.00    -0.06       0.00     0.03
    20   8.8854      0.00     0.01       0.00     0.08
    21   8.8855      0.00    -0.03       0.00     0.04
    22   8.8857      0.00    -0.03       0.00     0.04
    23   9.9688      0.00    -0.01       0.00    -0.17
    24  10.0124      0.00     0.07       0.00     0.03
    25  10.0124      0.00     0.01       0.00    -0.12
    26  10.0152      0.00     0.12       0.00    -0.10
    27  10.0751      0.00     0.02       0.00     0.11
    28  10.1518      0.00     0.02       0.00     0.05
    29  10.1518      0.00    -0.03       0.00     0.02

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.

07VK302    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.143    46.143    46.143
ecceobj         0.030     0.030     0.030
incobj         26.483    26.483    26.483
qmin           43.627    43.627    43.628
qmax           48.218    48.230    48.230
amean          45.838    45.838    45.838
amin           45.493    45.493    45.489
amax           46.201    46.202    46.202
emean           0.034     0.034     0.034
emin            0.024     0.024     0.024
emax            0.044     0.044     0.044
imean          25.345    25.345    25.345
imin           25.125    25.124    25.125
imax           25.576    25.575    25.576
excite_mean     0.429     0.429     0.429
fracstop        1.000     1.000     1.000
cjmean          2.886     2.886     2.886

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       197.4     197.5     197.5
kozaiamp        180.0     180.0     180.0