Orbit Fit and Astrometric record for 00WW12

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: 00WW12    
# Created Fri Mar 29 01:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     13
# Arc:   1.05y
# First observation: 2000/11/24
#  Last observation: 2001/12/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.027709  -0.000001  -0.000337   0.026048   0.000000
# Chi-squared of fit:     9.04 DOF:     18 RMS:  0.15
# Min/Max residuals:    -0.34    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.696936E-05  2.753822E-02 -9.538562E-07 -3.341429E-04  2.607273E-02 -1.021499E-02
# Covariance matrix:
  2.8952E-13  2.5822E-11 -1.5791E-15 -3.1663E-13  6.5707E-12  1.1355E-09
  2.5822E-11  2.1052E-08 -5.5516E-13 -2.5634E-10  4.7418E-09  9.2454E-07
 -1.5791E-15 -5.5516E-13  1.8946E-13 -1.7891E-13 -1.3441E-13 -2.4293E-11
 -3.1663E-13 -2.5634E-10 -1.7891E-13  3.6310E-12 -5.7739E-11 -1.1258E-08
  6.5707E-12  4.7418E-09 -1.3441E-13 -5.7739E-11  1.0755E-09  2.0818E-07
  1.1355E-09  9.2454E-07 -2.4293E-11 -1.1258E-08  2.0818E-07  4.0605E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.464886   56.067589   -0.105187   -0.042068   -0.974196  2451872.594203
# Heliocentric elements and errors
Epoch:              2451870.5000  =  2000/11/22
Mean Anomaly:          328.33906 +/-    12.286
Argument of Peri:      328.26998 +/-    10.840
Long of Asc Node:      161.59101 +/-     0.328
Inclination:             2.49253 +/-     0.004
Eccentricity:         0.42875671 +/-    0.2457
Semi-Major Axis:     54.01997865 +/-   13.7113
Time of Perihelion: 2464624.6452 +/-     957.4
Perihelion:          30.85855020 +/-   15.4118
Aphelion:            77.18140710 +/-   23.6632
Period (y)              397.0451 +/-    151.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.85153052 +/-    0.0269
Ecliptic Y           32.66583119 +/-    0.0400
Ecliptic Z           -1.64957265 +/-    0.0021
Ecliptic XDOT        -0.00300622 +/-    0.0004
Ecliptic YDOT         0.00072823 +/-    0.0006
Ecliptic ZDOT         0.00001125 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.33531496 +/-    0.0364
Geocenter to KBO     38.35424775 +/-    0.0482
# Hcoef:  7.62

The following table shows the complete astrometric record for 00WW12. 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 (00WW12) followed by the observatory code and reference code for the source of the astrometry.

2000 11  24.09346  03 37 24.71   +16 52 27.0         00WW12    809  Cc2825      
2000 11  24.13571  03 37 24.49   +16 52 26.0   23.0R 00WW12    809  Cc2825      
2000 11  24.18362  03 37 24.25   +16 52 25.3   22.9R 00WW12    809  Cc2825      
2000 11  25.07396  03 37 19.58   +16 52 09.4   23.2R 00WW12    809  Cc2825      
2000 11  25.10549  03 37 19.39   +16 52 08.6   23.2R 00WW12    809  Cc2825      
2000 11  25.14129  03 37 19.21   +16 52 08.3   23.4R 00WW12    809  Cc2825      
2000 12  16.24842  03 35 34.68   +16 46 32.6         00WW12    695  Cc3925      
2000 12  16.33372  03 35 34.31   +16 46 30.6   23.0R 00WW12    695  Cc3925      
2000 12  16.36634  03 35 34.15   +16 46 30.0   23.6R 00WW12    695  Cc3925      
2001 12  12.04790  03 42 25.27   +17 08 25.6         00WW12    950  Ce3547      
2001 12  12.08179  03 42 25.10   +17 08 24.9         00WW12    950  Ce3547      
2001 12  12.11790  03 42 24.91   +17 08 24.4         00WW12    950  Ce3547      
2001 12  12.84125  03 42 21.43   +17 08 13.8         00WW12    950  Ce3547      

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    -0.06       0.00     0.15
     2   0.0001     -3.30    -0.04      -0.24    -0.11
     3   0.0002     -6.82     0.22      -0.12    -0.02
     4   0.0027    -75.71     0.12      -0.03    -0.17
     5   0.0028    -78.55    -0.25      -0.17    -0.34
     6   0.0029    -81.13    -0.02       0.13    -0.06
     7   0.0607  -1618.92 (  -0.01)     23.72 (   1.20)
     8   0.0609  -1624.56     0.10      23.02     0.34
     9   0.0610  -1626.93    -0.09      22.97     0.24
    10   1.0485   4416.86     0.11     -53.85     0.12
    11   1.0486   4414.32     0.03     -53.98    -0.07
    12   1.0487   4411.56    -0.13     -53.86     0.01
    13   1.0506   4360.55    -0.01     -52.91    -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.

00WW12    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0