Orbit Fit and Astrometric record for 612051

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: 612051    
# Created Fri Mar 29 01:09:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     29 observations of     29
# Arc:  11.13y
# First observation: 1997/09/07
#  Last observation: 2008/10/24
# Chi-squared of fit:   148.69 DOF:     52 RMS:  0.40
# Min/Max residuals:    -1.15    1.13
# Exact a, adot, b, bdot, g, gdot:
  1.968659E-05  4.225829E-02  2.457724E-06  8.820016E-03  3.313340E-02  4.909839E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.626712   13.227074    0.472275    0.009438   -0.880553  2450698.947291
# Heliocentric elements and errors
Epoch:              2450698.5000  =  1997/09/07
Mean Anomaly:            9.19610 +/-     0.000
Argument of Peri:      341.70423 +/-     0.000
Long of Asc Node:        9.42309 +/-     0.000
Inclination:            11.77282 +/-     0.000
Eccentricity:         0.37033791 +/-    0.0000
Semi-Major Axis:     48.43699910 +/-    0.0000
Time of Perihelion: 2447553.1744 +/-       0.0
Perihelion:          30.49894215 +/-    0.0000
Aphelion:            66.37505604 +/-    0.0000
Period (y)              337.1119 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.35128073 +/-    0.0000
Ecliptic Y            6.64321361 +/-    0.0000
Ecliptic Z            0.33020420 +/-    0.0000
Ecliptic XDOT        -0.00040742 +/-    0.0000
Ecliptic YDOT         0.00349779 +/-    0.0000
Ecliptic ZDOT         0.00073306 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.07149347 +/-    0.0000
Geocenter to KBO     30.18098360 +/-    0.0000
# Hcoef:  8.53

The following table shows the complete astrometric record for 612051. 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 (612051) followed by the observatory code and reference code for the source of the astrometry.

1997 09  07.44656  00 47 41.90   +05 47 57.8   23.0R 612051    675  Ca0035      
1997 09  07.46976  00 47 41.78   +05 47 57.3   23.1R 612051    675  Ca0035      
1997 09  24.43753  00 46 08.92   +05 39 50.7         612051    568  Ca0035      
1997 09  24.51529  00 46 08.55   +05 39 48.5         612051    568  Ca0035      
1997 09  27.34124  00 45 52.03   +05 38 18.8         612051    696  Ca0035      
1997 09  27.43969  00 45 51.43   +05 38 16.1   23.0R 612051    696  Ca0035      
1997 10  27.20396  00 42 59.39   +05 22 43.6         612051    675  Ca0404      
1997 10  27.23100  00 42 59.23   +05 22 42.7         612051    675  Ca0404      
1997 10  27.23811  00 42 59.21   +05 22 42.7         612051    675  Ca0404      
1998 10  16.33632  00 52 14.07   +06 52 52.4         612051    568  Ca3333      
1998 10  16.39944  00 52 13.67   +06 52 50.6         612051    568  Ca3333      
1998 10  16.42354  00 52 13.52   +06 52 50.1         612051    568  Ca3333      
1998 10  16.45345  00 52 13.38   +06 52 48.7         612051    568  Ca3333      
1998 10  16.51749  00 52 12.96   +06 52 46.7   22.9R 612051    568  Ca3333      
1998 12  12.84052  00 48 18.21   +06 31 45.7         612051    950  Ca3333      
1998 12  14.82509  00 48 15.69   +06 31 35.0         612051    950  Ca3333      
2000 08  07.33685  01 13 50.00   +10 01 19.0   23.5R 612051    809  Cc2106      
2000 08  07.39804  01 13 49.88   +10 01 19.2   23.2R 612051    809  Cc2106      
2000 08  07.41861  01 13 49.84   +10 01 19.0   23.7R 612051    809  Cc2106      
2000 09  24.39173  01 10 39.64   +09 48 32.0         612051    568  Cb8918      
2000 09  24.41127  01 10 39.54   +09 48 32.1         612051    568  Cb8918      
2007 07  07.23087  02 07 58.36   +18 13 49.4   23.7R 612051    250  S~06AJ      
2007 07  07.23712  02 07 58.39   +18 13 49.6         612051    250  S~06AJ      
2007 07  07.24337  02 07 58.41   +18 13 49.8         612051    250  S~06AJ      
2007 07  07.29753  02 07 58.60   +18 13 51.5         612051    250  S~06AJ      
2008 10  23.38932  02 11 58.93   +19 20 32.2   23.6r 612051    695  C~0gLr      
2008 10  23.44557  02 11 58.61   +19 20 30.8   23.6r 612051    695  C~0gLr      
2008 10  24.34441  02 11 53.17   +19 20 08.2   23.3r 612051    695  C~0gLr      
2008 10  24.44969  02 11 52.53   +19 20 05.4   23.7r 612051    695  C~0gLr      

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    -0.05       0.00     0.37
     2   0.0001      0.00    -0.06       0.00     0.47
     3   0.0465      0.00    -0.20       0.00     0.29
     4   0.0467      0.00     1.13       0.00     0.49
     5   0.0545      0.00     0.09       0.00    -1.15
     6   0.0547      0.00    -0.13       0.00    -0.76
     7   0.1362      0.00    -0.48       0.00     0.42
     8   0.1363      0.00    -0.67       0.00     0.31
     9   0.1363      0.00    -0.38       0.00     0.51
    10   1.1058      0.00     0.23       0.00    -0.32
    11   1.1060      0.00    -0.14       0.00    -0.13
    12   1.1060      0.00    -0.23       0.00     0.14
    13   1.1061      0.00     0.34       0.00    -0.32
    14   1.1063      0.00    -0.26       0.00    -0.28
    15   1.2632      0.00    -0.01       0.00     0.36
    16   1.2687      0.00     0.53       0.00     0.38
    17   2.9155      0.00    -0.15       0.00    -0.07
    18   2.9157      0.00    -0.25       0.00     0.22
    19   2.9157      0.00    -0.28       0.00     0.05
    20   3.0471      0.00     0.33       0.00    -1.09
    21   3.0471      0.00     0.51       0.00    -0.46
    22   9.8283      0.00    -0.12       0.00     0.30
    23   9.8283      0.00    -0.01       0.00     0.31
    24   9.8283      0.00    -0.04       0.00     0.31
    25   9.8285      0.00    -0.10       0.00     0.31
    26  11.1265      0.00    -0.32       0.00    -0.19
    27  11.1266      0.00     0.05       0.00    -0.16
    28  11.1291      0.00    -0.20       0.00    -0.11
    29  11.1294      0.00    -0.11       0.00    -0.22

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.

612051    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.511    48.511    48.511
ecceobj         0.371     0.371     0.371
incobj         11.772    11.772    11.772
qmin           29.778    29.546    29.899
qmax           67.004    67.014    66.853
amean          47.796    47.796    47.796
amin           47.155    47.192    47.172
amax           48.617    48.571    48.573
emean           0.335     0.339     0.333
emin            0.282     0.288     0.278
emax            0.378     0.382     0.376
imean          14.393    14.042    14.631
imin           11.425    10.715    11.740
imax           17.651    17.413    17.835
excite_mean     0.420     0.420     0.420
fracstop        1.000     1.000     1.000
cjmean          2.926     2.926     2.926

libcent 0        76.9      76.1      77.2
libamp  0        40.3      38.7      41.3
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       323.3     324.2     317.4
kozaiamp        180.0     179.9     180.0