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 Wed Dec 13 02:37:15 2017
# Orbit generated from Bernstein formalism
# Fitting   41 observations of   41
# Arc:  18.02y
# First observation: 1990/10/16
#  Last observation: 2008/10/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.006701   0.024762  -0.001686   0.004632   0.032070   0.000000
# Chi-squared of fit:   229.21 DOF:   76 RMS:  0.42
# Min/Max residuals:    -1.23    0.98
# Exact a, adot, b, bdot, g, gdot:
  1.294523E-05  2.235354E-02  4.315587E-06  4.189637E-03  2.434168E-02 -2.117235E-03
# Covariance matrix:
  6.3409E-13 -9.3312E-14  4.1107E-14 -1.1954E-14 -7.5560E-14 -1.3349E-13
 -9.3312E-14  2.3433E-14 -1.3742E-14  3.9695E-15  3.5049E-14  4.3533E-14
  4.1107E-14 -1.3742E-14  4.3799E-13 -3.2080E-14 -2.3013E-14 -2.8124E-14
 -1.1954E-14  3.9695E-15 -3.2080E-14  2.9276E-15  6.4714E-15  8.1403E-15
 -7.5560E-14  3.5049E-14 -2.3013E-14  6.4714E-15  1.2343E-13  6.5684E-14
 -1.3349E-13  4.3533E-14 -2.8124E-14  8.1403E-15  6.5684E-14  8.9769E-14
#      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:          245.73146 +/-     0.020
Argument of Peri:      163.01530 +/-     0.015
Long of Asc Node:       19.06239 +/-     0.000
Inclination:            13.27618 +/-     0.000
Eccentricity:         0.12441271 +/-    0.0000
Semi-Major Axis:     39.43170988 +/-    0.0018
Time of Perihelion: 2476887.7114 +/-       4.7
Perihelion:          34.52590396 +/-    0.0017
Aphelion:            44.33751579 +/-    0.0021
Period (y)              247.6148 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.84671140 +/-    0.0003
Ecliptic Y           33.98897112 +/-    0.0005
Ecliptic Z            5.74230734 +/-    0.0001
Ecliptic XDOT        -0.00225146 +/-    0.0000
Ecliptic YDOT         0.00116542 +/-    0.0000
Ecliptic ZDOT         0.00043340 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.91527044 +/-    0.0004
Geocenter to KBO     41.08179745 +/-    0.0006
# Hcoef:  4.92

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      

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     0.33       0.00    -0.33
  2   0.9884   4869.95    -0.41     828.47     0.02
  3   1.9523  10147.44     0.35    1554.50    -0.23
  4  12.1501  54525.37    -0.19   11193.72     0.09
  5  12.1502  54520.05    -0.33   11193.54     0.16
  6  12.1504  54515.42     0.21   11193.50     0.38
  7  12.2186  52634.00    -0.00   11002.79     0.05
  8  12.2187  52631.50     0.04   11002.33    -0.00
  9  12.2215  52564.85    -0.35   10991.26    -0.23
 10  12.3516  50941.96    -0.16   10340.07     0.06
 11  12.3545  50945.37     0.48   10324.99     0.30
 12  12.3571  50949.23     0.14   10311.33     0.70
 13  13.1003  61390.25    -0.35   12236.17     0.02
 14  13.1031  61306.14    -0.41   12237.32    -0.04
 15  13.1032  61301.37    -0.31   12237.61     0.18
 16  13.1034  61297.10    -0.36   12237.54     0.07
 17  13.1333  60382.46    -0.49   12228.72     0.02
 18  13.1336  60375.05    -0.45   12228.62     0.11
 19  13.1705  59254.30     0.57   12165.27    -0.38
 20  13.1706  59252.77     0.95   12164.99    -0.51
 21  13.1706  59250.03     0.13   12165.02    -0.32
 22  13.1731  59177.47    -1.23   12159.71     0.36
 23  13.1732  59175.07    -0.77   12159.08    -0.03
 24  14.0960  66990.55    -0.55   13270.22    -0.07
 25  14.0961  66986.44     0.55   13270.80     0.38
 26  14.1574  65088.78    -0.11   13228.76     0.05
 27  14.1576  65083.48     0.03   13228.28    -0.05
 28  14.7984  74118.72     0.89   12630.34     0.01
 29  14.7984  74119.16     0.87   12630.54     0.07
 30  14.7984  74119.74     0.98   12630.62     0.01
 31  16.3985  72394.78     0.21   14108.72     0.23
 32  16.4011  72416.27    -0.25   14094.44     0.20
 33  16.4011  72416.55    -0.07   14094.43     0.26
 34  16.4011  72416.98     0.24   14094.62     0.53
 35  16.4038  72441.08     0.42   14079.58    -0.15
 36  16.4038  72441.32     0.42   14079.03    -0.55
 37  17.0705  84917.54     0.04   16490.04     0.07
 38  17.0707  84911.77     0.15   16490.43     0.07
 39  18.0220  92152.57    -0.32   17469.13     0.54
 40  18.0221  92150.76    -0.57   17467.79    -1.15
 41  18.0221  92149.59    -0.20   17468.44    -0.84

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        39.563    39.568    39.557
ecceobj         0.121     0.121     0.121
incobj         13.243    13.243    13.243
qmin           33.662    33.558    33.645
qmax           45.730    45.642    45.723
amean          39.457    39.458    39.458
amin           39.068    39.089    39.061
amax           39.870    39.875    39.872
emean           0.123     0.123     0.124
emin            0.102     0.099     0.099
emax            0.148     0.146     0.148
imean          13.180    13.202    13.176
imin           12.518    12.499    12.510
imax           13.875    13.895    13.863
excite_mean     0.259     0.259     0.259
fracstop        1.000     1.000     1.000
cjmean          2.974     2.974     2.974

libcent 0       179.9     180.1     178.5
libamp  0        68.2      66.3      72.1
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       179.8     179.1     179.7
kozaiamp        180.0     180.0     180.0