Orbit Fit and Astrometric record for 02CX224

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: 02CX224   
# Created Fri Jul 20 01:37:19 2018
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc:  16.16y
# First observation: 2001/10/21
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.002191   0.018470  -0.000554   0.005463   0.018774   0.000000
# Chi-squared of fit:    56.16 DOF:   46 RMS:  0.26
# Min/Max residuals:    -0.53    0.64
# Exact a, adot, b, bdot, g, gdot:
  1.187396E-05  1.744961E-02  2.547285E-06  5.126613E-03  2.090107E-02 -2.038959E-03
# Covariance matrix:
  2.3046E-13 -1.0435E-13  4.0466E-14 -3.1136E-14  1.2940E-13 -3.5150E-13
 -1.0435E-13  7.1018E-14 -2.7442E-14  2.1843E-14 -5.7002E-14  2.4640E-13
  4.0466E-14 -2.7442E-14  9.0921E-14 -1.7044E-14  2.8615E-14 -9.9669E-14
 -3.1136E-14  2.1843E-14 -1.7044E-14  9.8768E-15 -1.9306E-14  7.9061E-14
  1.2940E-13 -5.7002E-14  2.8615E-14 -1.9306E-14  2.0587E-13 -2.1866E-13
 -3.5150E-13  2.4640E-13 -9.9669E-14  7.9061E-14 -2.1866E-13  8.9192E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.947551   55.736273    0.465353    0.060124   -0.872839  2452203.811093
# Heliocentric elements and errors
Epoch:              2452200.5000  =  2001/10/18
Mean Anomaly:          255.71477 +/-     0.037
Argument of Peri:      131.64012 +/-     0.026
Long of Asc Node:       42.23904 +/-     0.000
Inclination:            16.82134 +/-     0.000
Eccentricity:         0.13108696 +/-    0.0001
Semi-Major Axis:     46.51307454 +/-    0.0041
Time of Perihelion: 2485765.0855 +/-      11.0
Perihelion:          40.41581698 +/-    0.0048
Aphelion:            52.61033211 +/-    0.0057
Period (y)              317.2275 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.75149965 +/-    0.0006
Ecliptic Y           39.91442391 +/-    0.0008
Ecliptic Z            3.29389922 +/-    0.0001
Ecliptic XDOT        -0.00207378 +/-    0.0000
Ecliptic YDOT         0.00102901 +/-    0.0000
Ecliptic ZDOT         0.00065177 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.72531930 +/-    0.0008
Geocenter to KBO     47.84443243 +/-    0.0010
# Hcoef:  6.01

The following table shows the complete astrometric record for 02CX224. 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 (02CX224) followed by the observatory code and reference code for the source of the astrometry.

2001 10  21.31035  03 29 33.58   +23 01 28.8   22.6R 02CX224   695  Cf0409      
2001 10  21.37238  03 29 33.33   +23 01 28.0         02CX224   695  Cf0409      
2002 02  06.14037  03 23 37.06   +22 42 02.4   22.4R 02CX224   695  Cf0409      
2002 02  07.11522  03 23 37.12   +22 42 00.4         02CX224   695  Cf0409      
2002 02  08.12003  03 23 37.29   +22 41 58.4         02CX224   695  Cf0409      
2002 08  04.21260  03 35 15.20   +23 29 06.2   23. R 02CX224   950  Ch4187      
2002 08  04.22758  03 35 15.25   +23 29 06.2         02CX224   950  Ch4187      
2002 08  05.19943  03 35 17.02   +23 29 19.5         02CX224   950  Ch4187      
2002 11  07.32780  03 32 16.97   +23 30 21.3   22.1R 02CX224   695  Cg7926      
2002 11  07.42347  03 32 16.53   +23 30 20.2         02CX224   695  Cg7926      
2002 11  07.43982  03 32 16.47   +23 30 19.9   22.5R 02CX224   568  Cl8371      
2002 11  07.48354  03 32 16.25   +23 30 19.3         02CX224   568  Cl8371      
2002 11  28.24670  03 30 39.99   +23 25 53.8   22.9R 02CX224   695  Cg7926      
2002 11  28.31000  03 30 39.68   +23 25 53.3   22.7R 02CX224   695  Cg7926      
2002 12  05.14203  03 30 09.00   +23 24 18.3   22.4R 02CX224   695  Cg9901      
2002 12  05.25335  03 30 08.48   +23 24 16.8         02CX224   695  Cg9901      
2002 12  06.10759  03 30 04.77   +23 24 05.5         02CX224   695  Cg9901      
2002 12  06.24231  03 30 04.14   +23 24 03.0         02CX224   695  Cg9901      
2003 10  24.39288  03 37 18.24   +24 04 08.7   22.2R 02CX224   695  Cj8745      
2003 10  24.48556  03 37 17.86   +24 04 08.0         02CX224   695  Cj8745      
2006 07  30.26605  03 50 53.21   +25 27 53.2   22.5R 02CX224   250  S~06AT      
2006 07  30.27045  03 50 53.23   +25 27 53.2         02CX224   250  S~06AT      
2006 07  30.27485  03 50 53.24   +25 27 53.3         02CX224   250  S~06AT      
2006 07  30.27924  03 50 53.25   +25 27 53.4         02CX224   250  S~06AT      
2017 12  20.31415  04 34 11.087  +30 44 34.60  22.6R 02CX224   G37  C~2Uv0      
2017 12  20.41775  04 34 10.578  +30 44 33.42        02CX224   G37  C~2Uv0      

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     0.27       0.00     0.27
  2   0.0002     -3.54     0.30       0.06    -0.00
  3   0.2952  -5063.96     0.14      93.32     0.10
  4   0.2979  -5063.67     0.09      91.17     0.13
  5   0.3006  -5061.89     0.25      88.64    -0.16
  6   0.7855   4968.40    -0.15     486.34     0.64
  7   0.7855   4969.07     0.11     486.18     0.35
  8   0.7882   4995.87    -0.00     493.42     0.02
  9   1.0459   2602.96     0.16    1138.70    -0.23
 10   1.0462   2596.82     0.22    1139.08    -0.24
 11   1.0462   2595.95     0.28    1138.99    -0.42
 12   1.0463   2592.86     0.04    1139.13    -0.46
 13   1.1032   1243.26    -0.22    1199.43    -0.17
 14   1.1034   1239.00    -0.34    1199.97     0.25
 15   1.1221    806.25    -0.10    1209.95    -0.28
 16   1.1224    798.94    -0.39    1210.23    -0.17
 17   1.1247    746.65     0.18    1211.65     0.30
 18   1.1251    737.63    -0.40    1211.32    -0.22
 19   2.0071   7101.12    -0.53    2140.59    -0.33
 20   2.0073   7095.89    -0.36    2141.11    -0.31
 21   4.7720  19084.07     0.06    4633.49     0.34
 22   4.7720  19084.34     0.15    4633.43     0.25
 23   4.7720  19084.49     0.14    4633.50     0.28
 24   4.7720  19084.65     0.12    4633.58     0.31
 25  16.1643  57573.77    -0.04   18257.59    -0.04
 26  16.1646  57566.57     0.05   18257.08    -0.15

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.

02CX224    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.519    46.531    46.506
ecceobj         0.128     0.128     0.128
incobj         16.800    16.800    16.800
qmin           39.313    39.358    39.249
qmax           53.487    53.533    53.454
amean          46.218    46.229    46.205
amin           45.839    45.856    45.821
amax           46.644    46.661    46.629
emean           0.133     0.133     0.133
emin            0.122     0.122     0.121
emax            0.147     0.147     0.147
imean          16.021    16.021    16.020
imin           15.651    15.657    15.637
imax           16.377    16.382    16.380
excite_mean     0.306     0.306     0.307
fracstop        1.000     1.000     1.000
cjmean          3.011     3.012     3.011

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       192.1     192.3     191.9
kozaiamp        180.0     180.0     180.0