Orbit Fit and Astrometric record for 00WM183

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: 00WM183   
# Created Sat Mar 30 01:10:23 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     24 observations of     24
# Arc:  22.08y
# First observation: 2000/11/26
#  Last observation: 2022/12/26
# Chi-squared of fit:   120.59 DOF:     42 RMS:  0.40
# Min/Max residuals:    -0.72    2.19
# Exact a, adot, b, bdot, g, gdot:
  1.551785E-05  1.702006E-02  5.186716E-07  2.121836E-03  2.044330E-02 -5.163708E-04
# Covariance matrix:
  1.1198E-13 -1.7816E-14  1.1316E-15 -1.5367E-15  2.8815E-14 -3.6407E-14
 -1.7816E-14  1.5465E-14 -1.4516E-15  1.8626E-15 -8.1273E-15  4.4045E-14
  1.1316E-15 -1.4516E-15  1.0088E-13 -6.2247E-15  2.2649E-16 -4.3808E-15
 -1.5367E-15  1.8626E-15 -6.2247E-15  1.1721E-15 -1.3981E-15  5.6566E-15
  2.8815E-14 -8.1273E-15  2.2649E-16 -1.3981E-15  2.9499E-13 -3.3945E-14
 -3.6407E-14  4.4045E-14 -4.3808E-15  5.6566E-15 -3.3945E-14  1.3379E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.260291   64.002508   -0.005015   -0.038797   -0.979692  2451874.628143
# Heliocentric elements and errors
Epoch:              2451874.5000  =  2000/11/26
Mean Anomaly:          197.72474 +/-     0.026
Argument of Peri:      148.15486 +/-     0.012
Long of Asc Node:       81.28541 +/-     0.000
Inclination:             7.42130 +/-     0.000
Eccentricity:         0.10657541 +/-    0.0001
Semi-Major Axis:     45.26552177 +/-    0.0042
Time of Perihelion: 2502016.2557 +/-      11.7
Perihelion:          40.44133038 +/-    0.0050
Aphelion:            50.08971316 +/-    0.0057
Period (y)              304.5506 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.85416446 +/-    0.0006
Ecliptic Y           44.82050758 +/-    0.0012
Ecliptic Z           -1.92921139 +/-    0.0001
Ecliptic XDOT        -0.00208203 +/-    0.0000
Ecliptic YDOT         0.00095150 +/-    0.0000
Ecliptic ZDOT         0.00028684 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.90196571 +/-    0.0011
Geocenter to KBO     48.91583553 +/-    0.0013
# Hcoef:  7.19

The following table shows the complete astrometric record for 00WM183. 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 (00WM183) followed by the observatory code and reference code for the source of the astrometry.

2000 11  26.12740  04 09 48.73   +18 43 38.3   23.7R 00WM183   809  Cc4044      
2000 11  26.18511  04 09 48.49   +18 43 37.9   23.7R 00WM183   809  Cc4044      
2000 11  26.23903  04 09 48.41   +18 43 37.2   23.5R 00WM183   809  Cc4044      
2000 11  27.12684  04 09 44.31   +18 43 27.6   23.4R 00WM183   809  Cc4044      
2000 11  27.18142  04 09 44.08   +18 43 27.4   23.9R 00WM183   809  Cc4044      
2000 11  27.21127  04 09 43.96   +18 43 26.8   23.5R 00WM183   809  Cc4044      
2000 11  27.23691  04 09 43.81   +18 43 26.7   23.8R 00WM183   809  Cc4044      
2000 11  27.26212  04 09 43.72   +18 43 26.4   23.5R 00WM183   809  Cc4044      
2001 01  23.15625  04 06 21.86   +18 36 50.9         00WM183   675  Cc6726      
2001 01  23.24722  04 06 21.69   +18 36 50.1         00WM183   675  Cc6726      
2001 11  14.22891  04 14 40.89   +19 03 33.7   24.0R 00WM183   309  Ce3553      
2001 11  14.27014  04 14 40.70   +19 03 33.3   23.7R 00WM183   309  Ce3553      
2001 11  15.27272  04 14 36.38   +19 03 22.7   23.8R 00WM183   309  Ce3553      
2001 11  15.30503  04 14 36.22   +19 03 22.3   24.2R 00WM183   309  Ce3553      
2001 12  13.05384  04 12 34.32   +18 58 46.7         00WM183   950  Ce3553      
2001 12  13.10421  04 12 34.09   +18 58 46.1         00WM183   950  Ce3553      
2014 10  22.38901  05 09 20.43   +22 25 21.1   23.3R 00WM183   G37  C~1BxA      
2014 10  22.48107  05 09 20.17   +22 25 20.9         00WM183   G37  C~1BxA      
2015 11  08.38330  05 12 39.50   +22 37 17.5   24.9R 00WM183   G37  C~1dc0      
2015 11  08.43266  05 12 39.34   +22 37 17.3         00WM183   G37  C~1dc0      
2016 02  04.13055  05 06 46.27   +22 32 12.1   23.6R 00WM183   G37  C~1luu      
2016 02  04.21910  05 06 46.07   +22 32 11.9         00WM183   G37  C~1luu      
2022 12  26.297420 05 39 21.439  +23 55 07.63  24.0G 00WM183   G37  C~69X1      
2022 12  26.352360 05 39 21.123  +23 55 07.57        00WM183   G37  C~69X1      

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    -0.55       0.00     0.14
     2   0.0002      0.00    -0.25       0.00     0.34
     3   0.0003      0.00     2.19       0.00     0.21
     4   0.0027      0.00    -0.36       0.00    -0.05
     5   0.0029      0.00    -0.12       0.00     0.32
     6   0.0030      0.00     0.09       0.00     0.04
     7   0.0030      0.00    -0.42       0.00     0.21
     8   0.0031      0.00    -0.07       0.00     0.18
     9   0.1589      0.00    -0.02       0.00    -0.07
    10   0.1591      0.00     0.15       0.00    -0.72
    11   0.9667      0.00    -0.02       0.00     0.00
    12   0.9669      0.00    -0.16       0.00     0.03
    13   0.9696      0.00    -0.00       0.00    -0.20
    14   0.9697      0.00    -0.27       0.00    -0.26
    15   1.0457      0.00    -0.16       0.00    -0.03
    16   1.0458      0.00    -0.35       0.00    -0.17
    17  13.9035      0.00     0.14       0.00     0.05
    18  13.9038      0.00     0.17       0.00     0.09
    19  14.9494      0.00    -0.32       0.00    -0.10
    20  14.9495      0.00     0.12       0.00    -0.14
    21  15.1896      0.00     0.02       0.00    -0.01
    22  15.1898      0.00     0.11       0.00    -0.09
    23  22.0812      0.00     0.36       0.00     0.09
    24  22.0814      0.00    -0.46       0.00     0.09

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.

00WM183    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.233    45.233    45.233
ecceobj         0.107     0.107     0.107
incobj          7.426     7.426     7.426
qmin           39.301    39.296    39.306
qmax           51.005    51.009    50.996
amean          44.989    44.989    44.989
amin           44.611    44.611    44.611
amax           45.401    45.400    45.400
emean           0.109     0.109     0.109
emin            0.095     0.095     0.096
emax            0.124     0.124     0.124
imean           5.611     5.611     5.611
imin            5.065     5.065     5.065
imax            6.253     6.253     6.254
excite_mean     0.147     0.147     0.147
fracstop        1.000     1.000     1.000
cjmean          3.087     3.087     3.087

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       186.4     186.5     186.4
kozaiamp        179.9     180.0     180.0