Orbit Fit and Astrometric record for 07VK305

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: 07VK305   
# Created Sat Dec 16 02:37:33 2017
# Orbit generated from Bernstein formalism
# Fitting   79 observations of   80
# Arc:  10.11y
# First observation: 1998/09/19
#  Last observation: 2008/10/28
Preliminary a, adot, b, bdot, g, gdot:
   0.001265   0.017709  -0.000372  -0.004139   0.020634   0.000000
# Chi-squared of fit:    72.91 DOF:  152 RMS:  0.17
# Min/Max residuals:    -0.54    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.412457E-05  1.863702E-02 -2.504734E-06 -4.376355E-03  2.099715E-02  7.071913E-03
# Covariance matrix:
  1.9087E-13 -5.4080E-14 -1.5452E-14  1.0886E-14  5.8902E-14 -2.4112E-13
 -5.4080E-14  2.8107E-14  1.0796E-14 -6.7142E-15  2.1633E-15  1.5185E-13
 -1.5452E-14  1.0796E-14  9.3598E-14 -1.4813E-14  4.5708E-15  6.3260E-14
  1.0886E-14 -6.7142E-15 -1.4813E-14  3.8219E-15 -4.9412E-16 -3.9181E-14
  5.8902E-14  2.1633E-15  4.5708E-15 -4.9412E-16  1.1501E-13  2.0542E-14
 -2.4112E-13  1.5185E-13  6.3260E-14 -3.9181E-14  2.0542E-14  8.8678E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.518315   40.996211    0.700192   -0.189787   -0.682649  2451075.918621
# Heliocentric elements and errors
Epoch:              2451070.5000  =  1998/09/14
Mean Anomaly:           44.75951 +/-     0.008
Argument of Peri:      145.02611 +/-     0.008
Long of Asc Node:      172.19127 +/-     0.000
Inclination:            20.21576 +/-     0.000
Eccentricity:         0.36722838 +/-    0.0001
Semi-Major Axis:     57.73983806 +/-    0.0059
Time of Perihelion: 2431145.6705 +/-       1.6
Perihelion:          36.53613111 +/-    0.0050
Aphelion:            78.94354502 +/-    0.0088
Period (y)              438.7545 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.63713251 +/-    0.0006
Ecliptic Y           30.03939074 +/-    0.0005
Ecliptic Z          -12.74213584 +/-    0.0002
Ecliptic XDOT        -0.00103869 +/-    0.0000
Ecliptic YDOT         0.00232592 +/-    0.0000
Ecliptic ZDOT        -0.00079659 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.31906699 +/-    0.0005
Geocenter to KBO     47.62550064 +/-    0.0008
# Hcoef:  5.77

The following table shows the complete astrometric record for 07VK305. 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 (07VK305) followed by the observatory code and reference code for the source of the astrometry.

1998 09  19.41789  02 53 22.45   +00 20 30.1   22.8V 07VK305   705  Cz3610      
1998 09  19.42121  02 53 22.43   +00 20 30.3   23.6  07VK305   705  Cz3610      
1998 10  29.307044 02 51 07.59   +00 02 34.1   22.1V 07VK305   645  C~2KuE      
1998 10  29.307873 02 51 07.59   +00 02 34.3   21.8V 07VK305   645  C~2KuE      
1998 10  29.310361 02 51 07.59   +00 02 34.1   23.2V 07VK305   645  C~2KuE      
1998 11  17.254166 02 49 50.62   -00 03 43.2   22.4V 07VK305   645  C~2KuE      
1998 11  17.254995 02 49 50.63   -00 03 43.2   21.9V 07VK305   645  C~2KuE      
1998 11  17.257483 02 49 50.62   -00 03 43.1   23.4V 07VK305   645  C~2KuE      
2000 10  01.39310  03 01 29.12   +00 24 29.3   22.7V 07VK305   705  Cz3610      
2000 10  01.39642  03 01 29.12   +00 24 29.3   23.9  07VK305   705  Cz3610      
2000 10  02.47825  03 01 25.83   +00 23 59.2   22.8V 07VK305   705  Cz3610      
2000 10  02.48157  03 01 25.83   +00 23 59.2   24.1  07VK305   705  Cz3610      
2000 11  27.21963  02 57 54.14   +00 04 02.0   22.5V 07VK305   705  Cz3610      
2000 11  27.22295  02 57 54.10   +00 04 02.0   23.4  07VK305   705  Cz3610      
2001 11  11.33885  03 03 15.04   +00 12 58.1   22.0V 07VK305   705  Cz3610      
2001 11  11.34217  03 03 15.02   +00 12 58.0   23.2  07VK305   705  Cz3610      
2001 11  12.30419  03 03 11.13   +00 12 40.7   23.1V 07VK305   705  Cz3610      
2001 11  12.30751  03 03 11.14   +00 12 40.7   24.3  07VK305   705  Cz3611      
2002 01  14.136652 03 00 01.36   +00 09 21.8   23.2V 07VK305   645  C~2KuE      
2002 01  14.137481 03 00 01.35   +00 09 21.8   22.3V 07VK305   645  C~2KuE      
2002 01  14.139969 03 00 01.36   +00 09 21.8   23.8V 07VK305   645  C~2KuE      
2002 10  04.41649  03 09 48.68   +00 32 47.4   22.7V 07VK305   705  Cz3611      
2002 10  04.41981  03 09 48.68   +00 32 47.5   24.1  07VK305   705  Cz3611      
2002 10  11.44910  03 09 26.42   +00 29 38.8   23.3V 07VK305   705  Cz3611      
2002 10  11.45242  03 09 26.42   +00 29 38.8   24.9  07VK305   705  Cz3611      
2002 11  07.33674  03 07 45.44   +00 19 06.0   22.8V 07VK305   705  Cz3611      
2002 11  07.34006  03 07 45.42   +00 19 05.9   23.8  07VK305   705  Cz3611      
2003 09  26.41452  03 14 19.12   +00 41 05.4   22.7V 07VK305   705  Cz3611      
2003 09  26.41784  03 14 19.12   +00 41 05.4   24.0  07VK305   705  Cz3611      
2003 09  30.39384  03 14 08.83   +00 39 17.1   23.3V 07VK305   705  Cz3611      
2003 09  30.39716  03 14 08.83   +00 39 17.1   24.7  07VK305   705  Cz3611      
2003 10  23.35013  03 12 54.13   +00 29 20.9   23.2V 07VK305   705  Cz3611      
2003 10  23.35345  03 12 54.13   +00 29 20.9   24.7  07VK305   705  Cz3611      
2004 09  22.409756 03 18 30.55   +00 46 59.4   22.6V 07VK305   645  C~1QdQ      
2004 09  22.410585 03 18 30.55   +00 46 59.3   22.2V 07VK305   645  C~1QdQ      
2004 09  22.413073 03 18 30.54   +00 46 59.3   23.4V 07VK305   645  C~1QdQ      
2004 09  24.459446 03 18 25.89   +00 46 04.1   22.5V 07VK305   645  C~2KuE      
2004 09  24.460275 03 18 25.89   +00 46 04.1   22.2V 07VK305   645  C~2KuF      
2004 09  24.462763 03 18 25.89   +00 46 04.1   23.4V 07VK305   645  C~2KuF      
2004 10  08.427467 03 17 47.80   +00 39 50.7   22.1V 07VK305   645  C~2KuF      
2004 10  08.430784 03 17 47.80   +00 39 50.8   23.6V 07VK305   645  C~2KuF      
2004 10  10.386003 03 17 41.61   +00 38 59.2   22.7V 07VK305   645  C~2KuF      
2004 10  10.386832 03 17 41.61   +00 38 59.2   21.5V 07VK305   645  C~2KuF      
2004 10  10.389320 03 17 41.61   +00 38 59.2   23.5V 07VK305   645  C~2KuF      
2005 09  09.45948  03 22 53.11   +00 57 07.2   22.8  07VK305   705  Cy0828      
2005 09  09.46280  03 22 53.08   +00 57 07.2   23.7  07VK305   705  Cy0828      
2005 10  01.40108  03 22 09.80   +00 47 26.5   23.1  07VK305   705  Cy0828      
2005 10  01.40440  03 22 09.79   +00 47 27.0   24.1  07VK305   705  Cy0828      
2006 09  27.45768  03 26 17.66   +00 53 36.6   22.9  07VK305   705  Cy0828      
2006 09  27.46100  03 26 17.65   +00 53 36.7   23.9  07VK305   705  Cy0828      
2006 10  01.47138  03 26 07.74   +00 51 50.2   23.0  07VK305   705  Cy0828      
2006 10  01.47470  03 26 07.73   +00 51 50.1   24.3  07VK305   705  Cy0828      
2006 10  02.39849  03 26 05.33   +00 51 26.0   23.4  07VK305   705  Cy0828      
2006 10  02.39932  03 26 05.33   +00 51 25.7   24.9  07VK305   705  Cy0828      
2006 10  23.37696  03 24 59.14   +00 42 37.6   23.1  07VK305   705  Cy0828      
2006 10  23.37779  03 24 59.14   +00 42 37.5   24.2  07VK305   705  Cy0828      
2006 10  31.38036  03 24 29.47   +00 39 38.2   22.6  07VK305   705  Cy0828      
2006 10  31.38285  03 24 29.46   +00 39 37.9   23.6  07VK305   705  Cy0828      
2006 11  17.37716  03 23 22.75   +00 34 22.0   22.9  07VK305   705  Cy0828      
2006 11  17.37799  03 23 22.73   +00 34 21.9   24.3  07VK305   705  Cy0828      
2006 11  23.37606  03 22 59.00   +00 32 55.8   23.1  07VK305   705  Cy0828      
2006 11  23.37689  03 22 58.99   +00 32 55.9   24.5  07VK305   705  Cy0828      
2007 09  19.46937  03 30 28.45   +01 01 27.4   23.0  07VK305   705  Cy0828      
2007 09  19.47020  03 30 28.46   +01 01 27.0   24.2  07VK305   705  Cy0828      
2007 11  02.37238  03 28 18.80   +00 43 24.0   22.9  07VK305   705  Cy0828      
2007 11  02.37321  03 28 18.80   +00 43 24.0   23.8  07VK305   705  Cy0828      
2007 11  05.37709  03 28 07.25   +00 42 22.9   23.1  07VK305   705  Cy0828      
2007 11  05.37792  03 28 07.26   +00 42 23.0   24.0  07VK305   705  Cy0828      
2007 11  12.37075  03 27 39.88   +00 40 12.9   23.2  07VK305   705  Cy0828      
2007 11  12.37158  03 27 39.87   +00 40 12.8   24.5  07VK305   705  Cy0828      
2007 11  19.35278  03 27 12.19   +00 38 20.4   22.9  07VK305   705  Cy0828      
2007 11  19.35361  03 27 12.20   +00 38 20.4   23.7  07VK305   705  Cy0828      
2007 11  20.31243  03 27 08.44   +00 38 06.2   23.1  07VK305   705  Cy0828      
2007 11  20.31326  03 27 08.41   +00 38 06.6   24.5  07VK305   705  Cy0828      
2008 10  24.36616  03 32 42.17   +00 50 42.8   22.6r 07VK305   695  C~0gMf      
2008 10  24.48647  03 32 41.76   +00 50 40.1   22.4r 07VK305   695  C~0gMf      
2008 10  28.47666  03 32 27.32   +00 49 11.9   23.1R 07VK305   250  S~06BM      
2008 10  28.48291  03 32 27.30   +00 49 11.8         07VK305   250  S~06BM      
2008 10  28.48985  03 32 27.27   +00 49 11.6         07VK305   250  S~06BM      
2008 10  28.49680  03 32 27.25   +00 49 11.5         07VK305   250  S~06BM      

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    -0.02       0.00    -0.16
  2   0.0000     -0.23    -0.10       0.28     0.17
  3   0.1092  -2252.71    -0.13    -419.00    -0.11
  4   0.1092  -2252.65    -0.01    -418.81     0.08
  5   0.1092  -2252.71     0.09    -419.00    -0.10
  6   0.1611  -3467.52     0.09    -432.24     0.03
  7   0.1611  -3467.37     0.28    -432.29    -0.02
  8   0.1611  -3467.49     0.33    -432.15     0.11
  9   2.0342   7038.11    -0.02   -1963.50     0.09
 10   2.0342   7038.11     0.15   -1963.50     0.13
 11   2.0371   6981.94    -0.15   -1977.41     0.16
 12   2.0371   6981.94     0.03   -1977.41     0.20
 13   2.1897   3591.25    -0.16   -2166.19    -0.07
 14   2.1897   3590.67    -0.54   -2166.01     0.09
 15   3.1456   8348.51    -0.09   -3100.79     0.00
 16   3.1456   8348.19    -0.20   -3100.79    -0.01
 17   3.1482   8287.23    -0.18   -3099.77     0.10
 18   3.1482   8287.38     0.17   -3099.82     0.05
 19   3.3202   5508.65     0.04   -2434.22    -0.00
 20   3.3202   5508.50    -0.09   -2434.17     0.03
 21   3.3203   5508.65     0.09   -2434.22    -0.06
 22   4.0411  14357.56    -0.26   -3740.75    -0.08
 23   4.0411  14357.59    -0.06   -3740.65     0.06
 24   4.0603  13980.71    -0.05   -3820.59    -0.11
 25   4.0603  13980.71     0.14   -3820.59    -0.08
 26   4.1339  12339.14    -0.04   -3969.53     0.06
 27   4.1339  12338.83    -0.15   -3969.54     0.05
 28   5.0185  18403.68    -0.10   -4486.65    -0.04
 29   5.0185  18403.68     0.05   -4486.65     0.01
 30   5.0294  18222.58    -0.03   -4543.84    -0.04
 31   5.0294  18222.58     0.13   -4543.84     0.00
 32   5.0922  16965.82     0.20   -4776.78    -0.15
 33   5.0922  16965.82     0.40   -4776.78    -0.13
 34   6.0096  22145.73     0.14   -5286.28    -0.13
 35   6.0096  22145.70     0.14   -5286.38    -0.22
 36   6.0096  22145.55     0.10   -5286.34    -0.13
 37   6.0152  22061.55    -0.07   -5318.23    -0.09
 38   6.0152  22061.55    -0.03   -5318.23    -0.08
 39   6.0152  22061.55     0.07   -5318.23    -0.04
 40   6.0534  21397.42     0.43   -5503.78     0.20
 41   6.0534  21397.45 (   0.64)  -5503.68 (   0.33)
 42   6.0588  21292.30    -0.05   -5525.11     0.09
 43   6.0588  21292.30    -0.01   -5525.11     0.10
 44   6.0588  21292.30     0.13   -5525.11     0.12
 45   6.9734  26141.73    -0.02   -5894.65    -0.09
 46   6.9734  26141.29    -0.36   -5894.51     0.11
 47   7.0335  25336.23    -0.09   -6256.25    -0.23
 48   7.0335  25336.23     0.07   -6255.72     0.34
 49   8.0220  29061.61     0.06   -7029.39     0.08
 50   8.0220  29061.50     0.08   -7029.25     0.27
 51   8.0330  28884.44    -0.09   -7086.68    -0.12
 52   8.0330  28884.27    -0.11   -7086.73    -0.13
 53   8.0355  28841.91     0.10   -7099.01     0.07
 54   8.0355  28841.82     0.05   -7099.30    -0.21
 55   8.0930  27715.64    -0.25   -7306.04    -0.01
 56   8.0930  27715.61    -0.23   -7306.14    -0.10
 57   8.1149  27228.65    -0.26   -7343.40     0.10
 58   8.1149  27228.41    -0.34   -7343.64    -0.13
 59   8.1614  26160.90     0.01   -7343.32    -0.03
 60   8.1614  26160.58    -0.26   -7343.33    -0.04
 61   8.1778  25789.11     0.08   -7317.92    -0.39
 62   8.1778  25789.00     0.01   -7317.78    -0.25
 63   8.9995  32880.33     0.02   -7721.58     0.05
 64   8.9995  32880.36     0.07   -7722.01    -0.37
 65   9.1197  30649.04     0.13   -8174.36    -0.01
 66   9.1197  30649.04     0.18   -8174.36    -0.01
 67   9.1279  30461.31    -0.05   -8180.43    -0.21
 68   9.1279  30461.49     0.18   -8180.37    -0.16
 69   9.1470  30021.11     0.32   -8180.52    -0.02
 70   9.1470  30020.93     0.19   -8180.57    -0.07
 71   9.1661  29581.79    -0.24   -8162.26     0.02
 72   9.1661  29581.94    -0.04   -8162.30    -0.03
 73   9.1688  29522.63     0.34   -8158.78    -0.42
 74   9.1688  29522.31     0.07   -8158.26     0.09
 75  10.0971  34653.68    -0.27   -8959.25     0.13
 76  10.0974  34646.81     0.10   -8959.97     0.05
 77  10.1083  34407.10    -0.06   -8978.95     0.40
 78  10.1083  34406.78    -0.00   -8978.95     0.43
 79  10.1083  34406.27    -0.09   -8979.01     0.40
 80  10.1084  34405.95     0.01   -8979.01     0.42

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.

07VK305    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        57.781    57.799    57.764
ecceobj         0.366     0.366     0.365
incobj         20.226    20.226    20.226
qmin           35.454    35.396    35.458
qmax           79.972    80.238    79.640
amean          57.257    57.279    57.160
amin           56.636    56.619    56.524
amax           58.057    58.117    57.977
emean           0.362     0.363     0.360
emin            0.345     0.345     0.341
emax            0.378     0.381     0.377
imean          19.860    19.820    19.912
imin           19.194    19.124    19.189
imax           20.618    20.667    20.754
excite_mean     0.497     0.497     0.496
fracstop        1.000     1.000     1.000
cjmean          2.944     2.944     2.944

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       180.2     179.6     179.3
kozaiamp        180.0     180.0     180.0