Orbit Fit and Astrometric record for 02VD130

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: 02VD130   
# Created Sun Dec  5 02:09:27 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     27 observations of     27
# Arc:  17.27y
# First observation: 2002/11/07
#  Last observation: 2020/02/14
# Chi-squared of fit:    38.40 DOF:     48 RMS:  0.21
# Min/Max residuals:    -0.47    0.71
# Exact a, adot, b, bdot, g, gdot:
  1.962337E-05  3.779565E-02  1.808898E-06  2.353839E-03  3.077056E-02 -4.412005E-03
# Covariance matrix:
  1.7156E-13 -3.3929E-14  2.1568E-15 -1.7050E-15  7.2711E-14 -4.1492E-14
 -3.3929E-14  1.7225E-14 -1.3483E-15  1.0559E-15 -1.4960E-14  2.4227E-14
  2.1568E-15 -1.3483E-15  1.1384E-13 -8.2448E-15  1.2963E-15 -2.0130E-15
 -1.7050E-15  1.0559E-15 -8.2448E-15  1.0389E-15 -1.0609E-15  1.5794E-15
  7.2711E-14 -1.4960E-14  1.2963E-15 -1.0609E-15  1.5516E-13 -3.1186E-14
 -4.1492E-14  2.4227E-14 -2.0130E-15  1.5794E-15 -3.1186E-14  3.6668E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.625703   62.200620    0.300899    0.026687   -0.940972  2452585.847763
# Heliocentric elements and errors
Epoch:              2452586.5000  =  2002/11/08
Mean Anomaly:          345.36910 +/-     0.002
Argument of Peri:       53.75901 +/-     0.003
Long of Asc Node:       37.89624 +/-     0.000
Inclination:             3.91045 +/-     0.000
Eccentricity:         0.32782506 +/-    0.0001
Semi-Major Axis:     48.11956749 +/-    0.0059
Time of Perihelion: 2457541.5677 +/-      21.6
Perihelion:          32.34476724 +/-    0.0047
Aphelion:            63.89436774 +/-    0.0083
Period (y)              333.8034 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.85416573 +/-    0.0002
Ecliptic Y           29.43388965 +/-    0.0004
Ecliptic Z            0.92204925 +/-    0.0000
Ecliptic XDOT        -0.00316801 +/-    0.0000
Ecliptic YDOT         0.00121258 +/-    0.0000
Ecliptic ZDOT         0.00019842 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.44493942 +/-    0.0003
Geocenter to KBO     32.49870734 +/-    0.0004
# Hcoef:  7.33

The following table shows the complete astrometric record for 02VD130. 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 (02VD130) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.34702  03 59 04.43   +22 11 41.0   22.0R 02VD130   695  Cg8319      
2002 11  07.44353  03 59 03.84   +22 11 39.6         02VD130   695  Cg8319      
2002 11  08.45400  03 58 57.79   +22 11 24.5         02VD130   695  Cg8319      
2002 11  28.22407  03 56 54.59   +22 06 04.4   21.9R 02VD130   688  Cg8319      
2002 11  28.31672  03 56 54.00   +22 06 02.8         02VD130   688  Cg8319      
2002 12  02.28582  03 56 29.12   +22 04 54.6   21.5R 02VD130   688  Cg8319      
2003 01  03.14322  03 53 35.05   +21 56 24.8   22.3R 02VD130   688  Ch0066      
2003 01  03.27207  03 53 34.48   +21 56 22.9         02VD130   688  Ch0066      
2003 11  20.31486  04 06 54.08   +22 41 52.4   21.7R 02VD130   695  Cj7011      
2003 11  20.39301  04 06 53.59   +22 41 51.3         02VD130   695  Cj7011      
2004 01  14.07478  04 01 53.26   +22 28 20.9   22.2R 02VD130   304  Cj7011      
2004 01  14.09694  04 01 53.19   +22 28 20.7         02VD130   304  Cj7011      
2007 11  11.36872  04 45 45.18   +24 38 41.8   22.3R 02VD130   688  Cw6771      
2007 11  11.44349  04 45 44.74   +24 38 41.4         02VD130   688  Cw6771      
2011 11  25.58014  05 24 11.785  +25 57 44.65  22.6G 02VD130   F51  C~2r7A      
2011 12  06.55130  05 22 59.916  +25 57 09.37  23.4G 02VD130   F51  C~2r7A      
2013 11  24.62028  05 44 44.694  +26 23 00.74  22.6G 02VD130   F51  C~2r7A      
2014 03  19.27647  05 36 51.259  +26 16 08.63  22.2G 02VD130   F51  C~2r7A      
2015 11  08.41479  06 06 48.94   +26 35 48.5   21.4R 02VD130   G37  C~1dcA      
2015 11  08.48522  06 06 48.62   +26 35 48.7         02VD130   G37  C~1dcA      
2017 08  31.61689  06 26 27.516  +26 31 06.41  22.8G 02VD130   F51  C~2r7A      
2017 12  20.49236  06 23 22.481  +26 43 18.45  22.1R 02VD130   G37  C~2Uv2      
2017 12  20.50580  06 23 22.357  +26 43 18.43        02VD130   G37  C~2Uv2      
2017 12  20.52740  06 23 22.276  +26 43 19.06        02VD130   G37  C~2Uv2      
2020 02  14.09249  06 38 25.30   +26 40 53.9         02VD130   G37  C~3wlw      
2020 02  14.17068  06 38 24.96   +26 40 53.8         02VD130   G37  C~3wlw      
2020 02  14.31722  06 38 24.32   +26 40 53.7         02VD130   G37  C~3wlw      

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    -0.13
     2   0.0003      0.00    -0.08       0.00    -0.10
     3   0.0030      0.00     0.07       0.00    -0.24
     4   0.0572      0.00     0.27       0.00    -0.10
     5   0.0574      0.00     0.30       0.00    -0.13
     6   0.0683      0.00    -0.13       0.00    -0.29
     7   0.1555      0.00     0.14       0.00     0.09
     8   0.1559      0.00     0.12       0.00    -0.05
     9   1.0348      0.00    -0.21       0.00     0.09
    10   1.0350      0.00    -0.01       0.00     0.18
    11   1.1847      0.00    -0.36       0.00     0.09
    12   1.1848      0.00    -0.22       0.00     0.13
    13   5.0103      0.00     0.04       0.00     0.28
    14   5.0105      0.00     0.17       0.00     0.43
    15   9.0492      0.00    -0.11       0.00    -0.20
    16   9.0793      0.00    -0.05       0.00    -0.15
    17  11.0480      0.00     0.23       0.00     0.04
    18  11.3619      0.00     0.05       0.00     0.19
    19  13.0022      0.00    -0.26       0.00     0.19
    20  13.0024      0.00    -0.47       0.00    -0.03
    21  14.8152      0.00     0.09       0.00    -0.07
    22  15.1188      0.00     0.18       0.00    -0.11
    23  15.1188      0.00    -0.30       0.00    -0.19
    24  15.1189      0.00     0.71       0.00     0.34
    25  17.2697      0.00    -0.06       0.00    -0.05
    26  17.2699      0.00    -0.04       0.00    -0.13
    27  17.2703      0.00    -0.07       0.00    -0.14

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.

02VD130    quality flag:3

Type:           2:1E      2:1E      2:1E
Type:          4:2II     4:2II     4:2II

axisobj        48.244    48.244    48.244
ecceobj         0.328     0.328     0.328
incobj          3.901     3.901     3.901
qmin           31.814    31.814    31.814
qmax           64.726    64.719    64.733
amean          47.797    47.797    47.797
amin           47.188    47.186    47.182
amax           48.538    48.536    48.547
emean           0.312     0.312     0.312
emin            0.286     0.286     0.286
emax            0.334     0.334     0.335
imean           5.119     5.117     5.139
imin            3.042     3.042     3.042
imax            7.514     7.516     7.652
excite_mean     0.326     0.326     0.326
fracstop        1.000     1.000     1.000
cjmean          3.013     3.013     3.013

libcent 0        78.5      78.8      78.8
libamp  0        39.7      39.8      40.0
libcent 1       187.2     187.3     190.0
libamp  1       167.9     167.6     165.2
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       180.9     180.9     181.4
kozaiamp        180.0     180.0     180.0