Orbit Fit and Astrometric record for 02XV93

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: 02XV93    
# Created Thu Nov 15 02:08:13 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   95 observations of   95
# Arc:  25.35y
# First observation: 1990/10/16
#  Last observation: 2016/02/21
# Chi-squared of fit:   279.47 DOF:  184 RMS:  0.30
# Min/Max residuals:    -1.27    1.22
# Exact a, adot, b, bdot, g, gdot:
  1.394863E-05  2.235322E-02  4.882919E-06  4.189535E-03  2.434168E-02 -2.118081E-03
# Covariance matrix:
  3.3781E-13 -2.5275E-14  3.6346E-14 -3.4038E-15 -1.0915E-14 -1.7697E-14
 -2.5275E-14  2.1409E-15 -3.5201E-15  3.2941E-16  1.6170E-15  1.6894E-15
  3.6346E-14 -3.5201E-15  1.4333E-13 -6.7632E-15 -3.0571E-15 -3.2084E-15
 -3.4038E-15  3.2941E-16 -6.7632E-15  3.4561E-16  2.8204E-16  3.0043E-16
 -1.0915E-14  1.6170E-15 -3.0571E-15  2.8204E-16  1.0663E-14  1.0610E-15
 -1.7697E-14  1.6894E-15 -3.2084E-15  3.0043E-16  1.0610E-15  1.5580E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.034687   55.690794    0.540248    0.117302   -0.830778  2448180.901012
# Heliocentric elements and errors
Epoch:              2448180.5000  =  1990/10/16
Mean Anomaly:          245.73356 +/-     0.001
Argument of Peri:      163.01770 +/-     0.000
Long of Asc Node:       19.06206 +/-     0.000
Inclination:            13.27611 +/-     0.000
Eccentricity:         0.12445533 +/-    0.0000
Semi-Major Axis:     39.43090303 +/-    0.0001
Time of Perihelion: 2476886.3045 +/-       0.3
Perihelion:          34.52351700 +/-    0.0001
Aphelion:            44.33828906 +/-    0.0001
Period (y)              247.6072 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.84667249 +/-    0.0000
Ecliptic Y           33.98898722 +/-    0.0001
Ecliptic Z            5.74232966 +/-    0.0000
Ecliptic XDOT        -0.00225148 +/-    0.0000
Ecliptic YDOT         0.00116532 +/-    0.0000
Ecliptic ZDOT         0.00043338 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.91532986 +/-    0.0001
Geocenter to KBO     41.08188586 +/-    0.0001
# Hcoef:  4.96

The following table shows the complete astrometric record for 02XV93. 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 (02XV93) followed by the observatory code and reference code for the source of the astrometry.

1990 10  16.40035  03 24 54.20   +26 58 25.1         02XV93    261   x3346      
1991 10  12.40937  03 30 32.81   +27 31 46.4         02XV93    261   x3346      
1992 09  28.46389  03 36 46.10   +28 04 07.1         02XV93    261   x3346      
2002 12  10.21134  04 29 26.36   +32 42 22.1         02XV93    644  Ch0145      
2002 12  10.27388  04 29 25.97   +32 42 21.4         02XV93    644  Ch0145      
2002 12  10.33609  04 29 25.63   +32 42 20.9         02XV93    644  Ch0145      
2003 01  04.24003  04 27 08.86   +32 36 06.5   20.1R 02XV93    675  Ch0145      
2003 01  04.27770  04 27 08.68   +32 36 05.8   20.2R 02XV93    675  Ch0145      
2003 01  05.28584  04 27 03.87   +32 35 48.2   20.3R 02XV93    675  Ch0145      
2003 02  21.81074  04 25 10.46   +32 22 28.7   21.7R 02XV93    621  Ch4226      
2003 02  22.86320  04 25 10.86   +32 22 14.6         02XV93    621  Ch4226      
2003 02  23.83427  04 25 11.28   +32 22 01.9         02XV93    621  Ch4226      
2003 11  22.27381  04 37 39.86   +33 09 04.8   20.3R 02XV93    695  Cj4694      
2003 11  23.29571  04 37 33.73   +33 08 59.3         02XV93    695  Cj4694      
2003 11  23.35398  04 37 33.38   +33 08 59.2         02XV93    695  Cj4694      
2003 11  23.40443  04 37 33.07   +33 08 58.8         02XV93    695  Cj4694      
2003 12  04.34235  04 36 26.50   +33 07 37.4   20.5R 02XV93    568  Ck0695      
2003 12  04.42958  04 36 25.96   +33 07 36.7         02XV93    568  Ck0695      
2003 12  17.93182  04 35 04.65   +33 05 03.6         02XV93    621  Cj4694      
2003 12  17.95516  04 35 04.54   +33 05 03.2         02XV93    621  Cj4694      
2003 12  17.97849  04 35 04.34   +33 05 03.0         02XV93    621  Cj4694      
2003 12  18.86070  04 34 59.08   +33 04 51.8   20.6R 02XV93    621  Cj4694      
2003 12  18.89570  04 34 58.91   +33 04 51.0         02XV93    621  Cj4694      
2004 11  19.95606  04 44 18.01   +33 31 55.1   20.4R 02XV93    176  Cm0470      
2004 11  20.01854  04 44 17.71   +33 31 55.4   20.7R 02XV93    176  Cm0470      
2004 12  12.38427  04 42 00.95   +33 29 14.1   20.5R 02XV93    290  Cm4079      
2004 12  12.44772  04 42 00.57   +33 29 13.3   20.5R 02XV93    290  Cm4079      
2005 08  03.51418  04 52 50.30   +33 28 04.4   20.1R 02XV93    250  S~06Ab      
2005 08  03.52089  04 52 50.33   +33 28 04.6         02XV93    250  S~06Ab      
2005 08  03.52760  04 52 50.37   +33 28 04.7         02XV93    250  S~06Ab      
2007 03  10.95963  04 50 40.11   +33 49 52.6   20.8C 02XV93    J86  Cz6608      
2007 03  11.90645  04 50 41.72   +33 49 40.2   21.0C 02XV93    J86  Cz6608      
2007 03  11.91110  04 50 41.74   +33 49 40.2   20.9C 02XV93    J86  Cz6609      
2007 03  11.91648  04 50 41.77   +33 49 40.4   21.0C 02XV93    J86  Cz6609      
2007 03  12.88005  04 50 43.57   +33 49 27.4   20.9C 02XV93    J86  Cz6609      
2007 03  12.88936  04 50 43.59   +33 49 26.9   20.8C 02XV93    J86  Cz6609      
2007 11  11.41328  05 05 08.56   +34 32 28.6   20.4R 02XV93    688  Cw6776      
2007 11  11.48769  05 05 08.16   +34 32 28.9         02XV93    688  Cw6776      
2008 10  23.92844  05 13 20.21   +34 47 26.8   21.1V 02XV93    A74  C~00MX      
2008 10  23.95594  05 13 20.09   +34 47 25.6   21.4V 02XV93    A74  C~00MX      
2008 10  23.98265  05 13 20.01   +34 47 26.2   22.0V 02XV93    A74  C~00MX      
2010 02  26.37872  05 10 24.004  +34 49 25.81  20.6G 02XV93    F51  C~2jgI      
2010 02  26.38825  05 10 23.970  +34 49 25.45  19.6G 02XV93    F51  C~2jgI      
2010 12  17.40201  05 22 14.958  +35 22 03.54  20.9G 02XV93    F51  C~2jgI      
2010 12  17.41381  05 22 14.876  +35 22 03.51  20.9G 02XV93    F51  C~2jgI      
2010 12  30.49714  05 20 52.577  +35 20 29.88  20.2G 02XV93    F51  C~2jgI      
2011 09  09.59512  05 34 49.774  +35 16 33.26  20.6G 02XV93    F51  C~2jgI      
2011 12  16.30890  05 29 30.951  +35 36 21.13  20.4G 02XV93    F51  C~2jgI      
2011 12  16.32099  05 29 30.871  +35 36 21.10  20.4G 02XV93    F51  C~2jgI      
2012 02  09.36605  05 24 43.668  +35 25 55.43  21.5G 02XV93    F51  C~2jgI      
2012 02  09.37807  05 24 43.638  +35 25 55.11  21.4G 02XV93    F51  C~2jgI      
2012 03  21.25473  05 24 27.262  +35 14 14.31  21.5G 02XV93    F51  C~2jgI      
2012 03  21.26664  05 24 27.281  +35 14 14.11  21.4G 02XV93    F51  C~2jgI      
2012 10  27.62104  05 41 12.913  +35 43 06.28  21.8G 02XV93    F51  C~2jgI      
2012 10  27.63283  05 41 12.872  +35 43 06.43  21.8G 02XV93    F51  C~2jgI      
2012 11  05.62114  05 40 36.145  +35 45 11.18  21.1G 02XV93    F51  C~2jgI      
2012 11  05.63369  05 40 36.088  +35 45 11.35  21.1G 02XV93    F51  C~2jgI      
2012 11  07.47570  05 40 27.616  +35 45 34.00  21.4G 02XV93    F51  C~2jgI      
2012 11  07.48822  05 40 27.559  +35 45 34.24  20.5G 02XV93    F51  C~2jgI      
2012 11  12.61173  05 40 02.405  +35 46 32.04  20.3G 02XV93    F51  C~2jgI      
2012 12  22.40343  05 35 59.252  +35 48 45.00  20.8G 02XV93    F51  C~2jgI      
2012 12  22.41683  05 35 59.165  +35 48 45.01  21.0G 02XV93    F51  C~2jgI      
2012 12  22.48275  05 35 58.725  +35 48 44.59  20.4G 02XV93    F51  C~2jgI      
2012 12  22.49519  05 35 58.656  +35 48 44.52  20.6G 02XV93    F51  C~2jgI      
2013 01  17.42209  05 33 23.421  +35 45 03.66  20.3G 02XV93    F51  C~2jgI      
2013 01  17.43459  05 33 23.362  +35 45 03.50  20.1G 02XV93    F51  C~2jgI      
2013 01  18.30932  05 33 18.816  +35 44 52.48  20.6G 02XV93    F51  C~2jgI      
2013 01  18.32178  05 33 18.751  +35 44 52.33  20.6G 02XV93    F51  C~2jgI      
2013 02  06.32425  05 31 56.768  +35 40 11.30  20.1G 02XV93    F51  C~2jgI      
2013 02  06.33612  05 31 56.724  +35 40 11.11  20.4G 02XV93    F51  C~2jgI      
2013 10  20.55060  05 48 49.841  +35 51 06.23  21.5G 02XV93    F51  C~2jgI      
2013 11  25.53949  05 46 09.531  +35 58 58.89  21.0G 02XV93    F51  C~2jgI      
2013 11  25.55233  05 46 09.455  +35 58 59.00  21.1G 02XV93    F51  C~2jgI      
2013 11  27.54537  05 45 57.594  +35 59 13.41  20.9G 02XV93    F51  C~2jgI      
2013 11  27.55798  05 45 57.521  +35 59 13.58  21.0G 02XV93    F51  C~2jgI      
2013 11  27.57855  05 45 57.388  +35 59 13.64  20.6G 02XV93    F51  C~2jgI      
2013 11  27.58817  05 45 57.330  +35 59 13.67  20.6G 02XV93    F51  C~2jgI      
2013 11  27.59827  05 45 57.270  +35 59 13.84  21.0G 02XV93    F51  C~2jgI      
2013 11  27.60864  05 45 57.215  +35 59 13.83  20.9G 02XV93    F51  C~2jgI      
2013 12  05.48914  05 45 08.438  +35 59 56.19  20.4G 02XV93    F51  C~2jgI      
2014 03  19.23052  05 38 23.497  +35 40 26.82  21.7G 02XV93    F51  C~2jgI      
2014 10  04.58033  05 56 31.184  +35 54 13.03        02XV93    F51  C~2jgI      
2014 10  04.59316  05 56 31.175  +35 54 13.24  20.7G 02XV93    F51  C~2jgI      
2014 10  04.60598  05 56 31.169  +35 54 13.52  20.7G 02XV93    F51  C~2jgI      
2014 10  04.61881  05 56 31.162  +35 54 13.71  21.0G 02XV93    F51  C~2jgI      
2015 03  03.24276  05 45 27.803  +35 56 00.20  19.9G 02XV93    F51  C~2jgI      
2016 02  03.30974  05 54 00.985  +36 12 58.49  20.7G 02XV93    F51  C~2jgI      
2016 02  03.32331  05 54 00.931  +36 12 58.26  20.6G 02XV93    F51  C~2jgI      
2016 02  03.33574  05 54 00.878  +36 12 58.04  20.5G 02XV93    F51  C~2jgI      
2016 02  03.34818  05 54 00.817  +36 12 57.94  20.7G 02XV93    F51  C~2jgI      
2016 02  21.24945  05 53 00.841  +36 08 14.93  21.1G 02XV93    F51  C~2jgI      
2016 02  21.26169  05 53 00.803  +36 08 14.68  20.7G 02XV93    F51  C~2jgI      
2016 02  21.27335  05 53 00.777  +36 08 14.65  20.9G 02XV93    F51  C~2jgI      
2016 02  21.28569  05 53 00.747  +36 08 14.33  21.0G 02XV93    F51  C~2jgI      
2016 02  21.28635  05 53 00.752  +36 08 14.31  20.7G 02XV93    F51  C~2jgI      

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     0.25       0.00    -0.40
  2   0.9884      0.00    -0.57       0.00    -0.20
  3   1.9523      0.00     0.38       0.00    -0.23
  4  12.1501      0.00    -0.08       0.00     0.11
  5  12.1502      0.00    -0.23       0.00     0.16
  6  12.1504      0.00     0.33       0.00     0.42
  7  12.2186      0.00     0.17       0.00     0.09
  8  12.2187      0.00     0.22       0.00     0.04
  9  12.2215      0.00    -0.18       0.00    -0.22
 10  12.3516      0.00     0.02       0.00     0.10
 11  12.3545      0.00     0.69       0.00     0.40
 12  12.3571      0.00     0.25       0.00     0.74
 13  13.1003      0.00    -0.30       0.00     0.02
 14  13.1031      0.00    -0.36       0.00    -0.05
 15  13.1032      0.00    -0.28       0.00     0.17
 16  13.1034      0.00    -0.31       0.00     0.06
 17  13.1333      0.00    -0.43       0.00     0.00
 18  13.1336      0.00    -0.40       0.00     0.10
 19  13.1705      0.00     0.79       0.00    -0.28
 20  13.1706      0.00     1.22       0.00    -0.37
 21  13.1706      0.00     0.30       0.00    -0.26
 22  13.1731      0.00    -1.27       0.00     0.27
 23  13.1732      0.00    -0.72       0.00    -0.06
 24  14.0960      0.00    -0.55       0.00    -0.08
 25  14.0961      0.00     0.59       0.00     0.41
 26  14.1574      0.00    -0.06       0.00     0.06
 27  14.1576      0.00     0.09       0.00    -0.02
 28  14.7984      0.00     0.87       0.00     0.08
 29  14.7984      0.00     0.84       0.00     0.13
 30  14.7984      0.00     0.97       0.00     0.09
 31  16.3985      0.00     0.18       0.00     0.25
 32  16.4011      0.00    -0.30       0.00     0.20
 33  16.4011      0.00    -0.13       0.00     0.26
 34  16.4011      0.00     0.18       0.00     0.53
 35  16.4038      0.00     0.43       0.00    -0.09
 36  16.4038      0.00     0.47       0.00    -0.47
 37  17.0705      0.00    -0.21       0.00     0.06
 38  17.0707      0.00    -0.09       0.00     0.06
 39  18.0220      0.00    -0.73       0.00     0.48
 40  18.0221      0.00    -0.93       0.00    -1.05
 41  18.0221      0.00    -0.57       0.00    -0.77
 42  19.3648      0.00    -0.16       0.00     0.09
 43  19.3648      0.00    -0.61       0.00    -0.10
 44  20.1698      0.00    -0.01       0.00    -0.08
 45  20.1698      0.00    -0.08       0.00    -0.06
 46  20.2056      0.00    -0.00       0.00     0.01
 47  20.8985      0.00    -0.01       0.00    -0.04
 48  21.1661      0.00    -0.03       0.00    -0.01
 49  21.1661      0.00    -0.04       0.00    -0.01
 50  21.3168      0.00    -0.14       0.00    -0.00
 51  21.3168      0.00    -0.05       0.00    -0.11
 52  21.4288      0.00    -0.22       0.00     0.03
 53  21.4288      0.00    -0.30       0.00     0.02
 54  22.0321      0.00     0.05       0.00     0.02
 55  22.0321      0.00     0.10       0.00    -0.01
 56  22.0567      0.00     0.04       0.00    -0.05
 57  22.0568      0.00     0.05       0.00    -0.03
 58  22.0618      0.00    -0.09       0.00    -0.16
 59  22.0618      0.00    -0.05       0.00    -0.08
 60  22.0759      0.00    -0.00       0.00    -0.12
 61  22.1848      0.00    -0.03       0.00    -0.05
 62  22.1849      0.00    -0.01       0.00     0.02
 63  22.1850      0.00    -0.11       0.00    -0.12
 64  22.1851      0.00     0.08       0.00    -0.13
 65  22.2560      0.00    -0.03       0.00    -0.01
 66  22.2561      0.00     0.08       0.00    -0.01
 67  22.2585      0.00    -0.00       0.00    -0.03
 68  22.2585      0.00     0.01       0.00    -0.02
 69  22.3105      0.00     0.00       0.00    -0.10
 70  22.3106      0.00    -0.04       0.00    -0.09
 71  23.0120      0.00    -0.02       0.00     0.10
 72  23.1106      0.00     0.02       0.00    -0.02
 73  23.1106      0.00     0.04       0.00    -0.01
 74  23.1161      0.00     0.03       0.00    -0.00
 75  23.1161      0.00     0.09       0.00     0.09
 76  23.1162      0.00    -0.02       0.00     0.01
 77  23.1162      0.00    -0.01       0.00    -0.02
 78  23.1162      0.00     0.01       0.00     0.09
 79  23.1162      0.00     0.13       0.00     0.01
 80  23.1378      0.00    -0.08       0.00    -0.14
 81  23.4218      0.00     0.02       0.00     0.02
 82  23.9676      0.00     0.16       0.00     0.04
 83  23.9677      0.00     0.14       0.00    -0.01
 84  23.9677      0.00     0.16       0.00     0.01
 85  23.9677      0.00     0.17       0.00    -0.06
 86  24.3774      0.00     0.00       0.00    -0.02
 87  25.3002      0.00    -0.03       0.00     0.05
 88  25.3003      0.00     0.06       0.00     0.01
 89  25.3003      0.00     0.09       0.00    -0.03
 90  25.3003      0.00     0.00       0.00     0.04
 91  25.3493      0.00     0.12       0.00     0.02
 92  25.3494      0.00    -0.01       0.00    -0.02
 93  25.3494      0.00     0.03       0.00     0.15
 94  25.3494      0.00     0.03       0.00     0.05
 95  25.3494      0.00     0.13       0.00     0.04

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.

02XV93    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.562    39.562    39.562
ecceobj         0.121     0.121     0.121
incobj         13.243    13.243    13.243
qmin           33.676    33.671    33.681
qmax           45.653    45.669    45.661
amean          39.458    39.458    39.458
amin           39.078    39.081    39.076
amax           39.870    39.868    39.873
emean           0.124     0.124     0.124
emin            0.101     0.101     0.101
emax            0.147     0.146     0.147
imean          13.181    13.181    13.181
imin           12.518    12.516    12.519
imax           13.872    13.872    13.873
excite_mean     0.259     0.259     0.259
fracstop        1.000     1.000     1.000
cjmean          2.974     2.974     2.974

libcent 0       180.6     180.3     180.7
libamp  0        69.6      69.7      68.7
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       180.0     179.8     179.8
kozaiamp        180.0     180.0     179.9