Orbit Fit and Astrometric record for 612146

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: 612146    
# Created Wed Dec 25 02:07:37 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     29 observations of     29
# Arc:  22.07y
# First observation: 2000/02/05
#  Last observation: 2022/03/02
# Chi-squared of fit:   120.72 DOF:     52 RMS:  0.36
# Min/Max residuals:    -1.15    1.20
# Exact a, adot, b, bdot, g, gdot:
  1.449002E-05  2.477771E-02 -2.490875E-07  2.044584E-04  2.467392E-02 -1.930235E-04
# 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
    0.290065  107.305198   -0.474924    0.004180   -0.867225  2451579.618303
# Heliocentric elements and errors
Epoch:              2451580.5000  =  2000/02/06
Mean Anomaly:            5.88473 +/-     0.000
Argument of Peri:       24.47754 +/-     0.000
Long of Asc Node:       76.82640 +/-     0.000
Inclination:             0.54931 +/-     0.000
Eccentricity:         0.06052543 +/-    0.0000
Semi-Major Axis:     44.04955599 +/-    0.0000
Time of Perihelion: 2449834.9412 +/-       0.0
Perihelion:          41.38343766 +/-    0.0000
Aphelion:            46.71567432 +/-    0.0000
Period (y)              292.3617 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.76055931 +/-    0.0000
Ecliptic Y           39.38312972 +/-    0.0000
Ecliptic Z            0.20517615 +/-    0.0000
Ecliptic XDOT        -0.00262418 +/-    0.0000
Ecliptic YDOT        -0.00083125 +/-    0.0000
Ecliptic ZDOT         0.00002268 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.39933002 +/-    0.0000
Geocenter to KBO     40.52866317 +/-    0.0000
# Hcoef:  7.15

The following table shows the complete astrometric record for 612146. 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 (612146) followed by the observatory code and reference code for the source of the astrometry.

2000 02  05.11756  07 15 11.28   +22 36 25.9   23.0R 612146    695  Cb1115      
2000 02  05.22983  07 15 10.73   +22 36 27.0         612146    695  Cb1115      
2000 02  26.12243  07 13 48.64   +22 38 49.3   23.2R 612146    695  Cb1115      
2000 02  26.21066  07 13 48.42   +22 38 49.6         612146    695  Cb1115      
2000 12  21.42492  07 25 10.73   +22 18 00.8         612146    568  Cc3758      
2000 12  21.50641  07 25 10.16   +22 18 01.5         612146    568  Cc3758      
2000 12  22.61660  07 25 04.71   +22 18 13.5   23.2R 612146    568  Cc3758      
2001 01  25.18505  07 22 07.95   +22 24 08.8   23.2R 612146    695  Cc6636      
2001 01  25.23628  07 22 07.66   +22 24 09.6         612146    695  Cc6636      
2001 12  14.26198  07 31 51.37   +22 04 37.0   21.6  612146    304  Ce8743      
2001 12  14.29675  07 31 51.21   +22 04 37.3         612146    304  Ce8743      
2002 02  03.45725  07 27 29.48   +22 14 01.7   22.7R 612146    568  Cf1711      
2002 02  03.56823  07 27 28.95   +22 14 02.5         612146    568  Cf1711      
2002 02  05.46633  07 27 19.91   +22 14 20.5         612146    568  Cf1711      
2002 02  14.15133  07 26 41.25   +22 15 40.6   22.9R 612146    304   f1711      
2002 02  14.17302  07 26 41.15   +22 15 40.7         612146    304   f1711      
2013 03  12.13281  08 30 19.32   +19 23 55.1   23.1R 612146    695  C~0uco      
2013 03  12.19517  08 30 19.13   +19 23 56.0         612146    695  C~0uco      
2013 03  13.13111  08 30 16.12   +19 24 06.5         612146    695  C~0uco      
2014 12  29.288299 08 47 29.74   +18 20 55.1         612146    W84  C~3i9U      
2014 12  29.291545 08 47 29.74   +18 20 55.1         612146    W84  C~3i9U      
2021 01  11.422630 09 20 18.043  +16 03 34.11  23.5G 612146    G37  C~4Tvi      
2021 01  11.463190 09 20 17.870  +16 03 34.54        612146    G37  C~4Tvi      
2021 01  11.503640 09 20 17.708  +16 03 35.51        612146    G37  C~4Tvi      
2021 02  15.243170 09 17 32.033  +16 16 21.77  23.7G 612146    G37  C~4Yot      
2021 02  15.295840 09 17 31.738  +16 16 23.67        612146    G37  C~4Yot      
2022 03  02.143010 09 21 55.650  +15 56 29.99  24.5G 612146    G37  C~5Rja      
2022 03  02.182760 09 21 55.422  +15 56 31.12        612146    G37  C~5Rja      
2022 03  02.223380 09 21 55.258  +15 56 32.37        612146    G37  C~5Rja      

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     0.32       0.00     0.04
     2   0.0003      0.00    -0.02       0.00     0.20
     3   0.0575      0.00    -0.30       0.00     0.35
     4   0.0577      0.00     0.65       0.00     0.18
     5   0.8770      0.00     1.20       0.00    -0.09
     6   0.8772      0.00    -1.15       0.00    -0.24
     7   0.8802      0.00     0.63       0.00     0.24
     8   0.9721      0.00    -0.12       0.00    -0.09
     9   0.9723      0.00    -0.48       0.00     0.19
    10   1.8567      0.00    -0.08       0.00     0.20
    11   1.8568      0.00    -0.06       0.00     0.14
    12   1.9968      0.00    -0.14       0.00    -0.13
    13   1.9971      0.00    -0.02       0.00    -0.39
    14   2.0023      0.00    -0.65       0.00    -0.96
    15   2.0261      0.00    -0.01       0.00     0.05
    16   2.0262      0.00    -0.12       0.00    -0.03
    17  13.0979      0.00    -0.07       0.00    -0.09
    18  13.0981      0.00     0.20       0.00     0.11
    19  13.1007      0.00     0.11       0.00     0.34
    20  14.8971      0.00    -0.03       0.00     0.20
    21  14.8971      0.00     0.18       0.00     0.15
    22  20.9344      0.00    -0.13       0.00     0.20
    23  20.9346      0.00    -0.06       0.00    -0.19
    24  20.9347      0.00     0.17       0.00    -0.04
    25  21.0298      0.00     0.34       0.00    -0.48
    26  21.0299      0.00    -0.19       0.00     0.25
    27  22.0699      0.00     0.32       0.00    -0.39
    28  22.0700      0.00    -0.42       0.00    -0.07
    29  22.0701      0.00    -0.13       0.00     0.34

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.

612146    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.036    44.036    44.036
ecceobj         0.060     0.060     0.060
incobj          0.549     0.549     0.549
qmin           40.224    40.223    40.226
qmax           47.839    47.838    47.838
amean          43.929    43.929    43.929
amin           43.578    43.581    43.577
amax           44.290    44.289    44.290
emean           0.064     0.064     0.064
emin            0.047     0.047     0.047
emax            0.080     0.080     0.080
imean           1.227     1.227     1.227
imin            0.349     0.349     0.349
imax            1.904     1.904     1.904
excite_mean     0.068     0.068     0.068
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.095

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       184.4     184.4     184.4
kozaiamp        180.0     180.0     179.9