Orbit Fit and Astrometric record for 00WN183

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: 00WN183   
# Created Thu Dec 14 02:37:05 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   5.90y
# First observation: 2000/11/26
#  Last observation: 2006/10/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000003   0.021510  -0.000004   0.001272   0.022601   0.000000
# Chi-squared of fit:    14.87 DOF:   26 RMS:  0.17
# Min/Max residuals:    -0.40    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.467841E-05  2.112082E-02  5.799908E-07  1.252264E-03  2.275486E-02 -2.427973E-03
# Covariance matrix:
  1.9284E-13  2.8417E-12 -1.6283E-14  1.6293E-13  8.5086E-13  2.1033E-11
  2.8417E-12  1.9562E-09 -9.8778E-12  1.1008E-10  4.3276E-10  1.4214E-08
 -1.6283E-14 -9.8778E-12  1.6660E-13 -5.7657E-13 -2.1908E-12 -7.1782E-11
  1.6293E-13  1.1008E-10 -5.7657E-13  6.2118E-12  2.4358E-11  7.9989E-10
  8.5086E-13  4.3276E-10 -2.1908E-12  2.4358E-11  9.6396E-11  3.1453E-09
  2.1033E-11  1.4214E-08 -7.1782E-11  7.9989E-10  3.1453E-09  1.0329E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.229602   64.059795   -0.004034   -0.038272   -0.979718  2451874.628143
# Heliocentric elements and errors
Epoch:              2451870.5000  =  2000/11/22
Mean Anomaly:          278.48045 +/-     0.776
Argument of Peri:       61.74704 +/-     0.860
Long of Asc Node:       96.76929 +/-     0.009
Inclination:             4.03102 +/-     0.001
Eccentricity:         0.11338521 +/-    0.0151
Semi-Major Axis:     45.11146686 +/-    0.0454
Time of Perihelion: 2476930.9059 +/-     235.6
Perihelion:          39.99649385 +/-    0.6819
Aphelion:            50.22643987 +/-    0.6826
Period (y)              302.9972 +/-      0.46
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.63876201 +/-    0.0083
Ecliptic Y           40.37766325 +/-    0.0170
Ecliptic Z           -1.70971154 +/-    0.0007
Ecliptic XDOT        -0.00241825 +/-    0.0000
Ecliptic YDOT         0.00085880 +/-    0.0000
Ecliptic ZDOT         0.00016209 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.93283628 +/-    0.0157
Geocenter to KBO     43.94665574 +/-    0.0190
# Hcoef:  7.01

The following table shows the complete astrometric record for 00WN183. 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 (00WN183) followed by the observatory code and reference code for the source of the astrometry.

2000 11  26.12740  04 10 01.56   +18 46 04.8   22.9R 00WN183   809  Cc4044      
2000 11  26.18511  04 10 01.25   +18 46 03.9   23.6R 00WN183   809  Cc4044      
2000 11  26.23903  04 10 01.04   +18 46 03.2   22.9R 00WN183   809  Cc4044      
2000 11  27.12684  04 09 56.71   +18 45 52.7   22.8R 00WN183   809  Cc4044      
2000 11  27.18142  04 09 56.45   +18 45 52.0   23.0R 00WN183   809  Cc4044      
2000 11  27.21127  04 09 56.30   +18 45 51.8         00WN183   809  Cc4044      
2000 11  27.23691  04 09 56.18   +18 45 51.2   23.3R 00WN183   809  Cc4044      
2000 11  27.26212  04 09 56.06   +18 45 51.2   22.9R 00WN183   809  Cc4044      
2001 01  23.15625  04 06 16.63   +18 38 08.0         00WN183   675  Cc6726      
2001 01  23.24722  04 06 16.42   +18 38 07.9         00WN183   675  Cc6726      
2001 01  31.04270  04 06 03.11   +18 37 59.6   23.1R 00WN183   809  Cc6726      
2001 01  31.07135  04 06 03.08   +18 37 59.6   23.1R 00WN183   809  Cc6726      
2001 01  31.10090  04 06 03.04   +18 37 59.4   23.6R 00WN183   809  Cc6726      
2006 10  19.43084  04 43 20.28   +20 28 56.0   23.6R 00WN183   695  Ct0288      
2006 10  20.43435  04 43 17.04   +20 28 48.9         00WN183   695  Ct0288      
2006 10  20.49007  04 43 16.86   +20 28 48.7         00WN183   695  Ct0288      

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    -0.00       0.00     0.06
  2   0.0002     -4.49    -0.40      -0.08    -0.07
  3   0.0003     -7.55     0.36      -0.22    -0.26
  4   0.0027    -69.93    -0.11       0.77     0.06
  5   0.0029    -73.69    -0.00       0.76    -0.01
  6   0.0030    -75.82    -0.01       0.95     0.15
  7   0.0030    -77.61     0.02       0.68    -0.14
  8   0.0031    -79.28     0.13       0.99     0.15
  9   0.1589  -3228.94     0.19     127.11    -0.37
 10   0.1591  -3231.89    -0.02     127.57    -0.22
 11   0.1805  -3419.28    -0.15     155.20     0.31
 12   0.1805  -3419.70     0.00     155.28     0.28
 13   0.1806  -3420.29    -0.01     155.19     0.09
 14   5.8954  29049.10     0.05    1581.91    -0.01
 15   5.8982  29002.11    -0.08    1581.02    -0.09
 16   5.8983  28999.53     0.03    1581.16     0.10

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.

00WN183    quality flag:2

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        45.064    45.287    45.005
ecceobj         0.112     0.157     0.082
incobj          4.033     4.036     4.032
qmin           38.815    35.193    40.128
qmax           50.996    55.722    49.597
amean          44.784    45.066    44.716
amin           44.423    44.587    44.360
amax           45.188    45.667    45.104
emean           0.114     0.181     0.084
emin            0.099     0.140     0.070
emax            0.129     0.220     0.100
imean           2.414     2.090     2.345
imin            1.731     0.913     1.787
imax            3.058     3.420     2.939
excite_mean     0.122     0.185     0.094
fracstop        1.000     1.000     1.000
cjmean          3.093     3.072     3.100

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       182.9     186.4     189.1
kozaiamp        180.0     180.0     180.0