Orbit Fit and Astrometric record for 04XX190

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: 04XX190   
# Created Sat Jun  6 01:09:33 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:  16.09y
# First observation: 2003/12/16
#  Last observation: 2020/01/18
# Chi-squared of fit:   112.56 DOF:   54 RMS:  0.34
# Min/Max residuals:    -1.08    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.528840E-05  2.575836E-02 -1.525678E-06  7.099344E-04  2.505430E-02  9.775675E-04
# Covariance matrix:
  2.5386E-13 -1.2924E-13  5.4626E-15 -3.4135E-15  3.9083E-14 -2.8079E-13
 -1.2924E-13  8.9432E-14 -3.9866E-15  2.4852E-15 -5.6239E-14  2.0496E-13
  5.4626E-15 -3.9866E-15  7.9430E-14 -9.9831E-15  2.8431E-15 -9.4981E-15
 -3.4135E-15  2.4852E-15 -9.9831E-15  3.3032E-15 -1.7383E-15  5.9183E-15
  3.9083E-14 -5.6239E-14  2.8431E-15 -1.7383E-15  1.9842E-13 -1.4641E-13
 -2.8079E-13  2.0496E-13 -9.4981E-15  5.9183E-15 -1.4641E-13  4.8835E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.006666   71.964884   -0.199037    0.000180   -0.961269  2452989.827103
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:           19.87712 +/-     0.009
Argument of Peri:      335.63907 +/-     0.011
Long of Asc Node:       72.01827 +/-     0.001
Inclination:             1.58098 +/-     0.000
Eccentricity:         0.10620317 +/-    0.0001
Semi-Major Axis:     45.33561370 +/-    0.0045
Time of Perihelion: 2446834.3591 +/-       2.9
Perihelion:          40.52082792 +/-    0.0053
Aphelion:            50.15039949 +/-    0.0060
Period (y)              305.2583 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.46156383 +/-    0.0002
Ecliptic Y           38.93102803 +/-    0.0007
Ecliptic Z            0.00457232 +/-    0.0000
Ecliptic XDOT        -0.00264772 +/-    0.0000
Ecliptic YDOT         0.00096675 +/-    0.0000
Ecliptic ZDOT         0.00007775 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.87680766 +/-    0.0006
Geocenter to KBO     39.91332034 +/-    0.0007
# Hcoef:  7.02

The following table shows the complete astrometric record for 04XX190. 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 (04XX190) followed by the observatory code and reference code for the source of the astrometry.

2003 12  16.32636  04 41 50.45   +22 13 51.2   23.0g 04XX190   568  Cq9918      
2003 12  16.35282  04 41 50.30   +22 13 50.9   23.1g 04XX190   568  Cq9918      
2003 12  16.37913  04 41 50.15   +22 13 50.8   23.0g 04XX190   568  Cq9918      
2004 12  11.37599  04 48 31.03   +22 28 11.9   22.9r 04XX190   568  Cq9918      
2004 12  11.40470  04 48 30.87   +22 28 11.7   22.7r 04XX190   568  Cq9918      
2004 12  11.43762  04 48 30.69   +22 28 11.5   22.6r 04XX190   568  Cq9918      
2004 12  12.29935  04 48 26.08   +22 28 03.7   22.7r 04XX190   568  Cq9918      
2005 10  03.44035  04 59 38.46   +22 47 36.1   22.7R 04XX190   675  Cq9918      
2005 10  03.48273  04 59 38.38   +22 47 36.0         04XX190   675  Cq9918      
2005 10  04.40111  04 59 36.83   +22 47 34.3         04XX190   675  Cq9918      
2005 10  04.45446  04 59 36.73   +22 47 34.0         04XX190   675  Cq9918      
2005 12  04.37664  04 55 28.66   +22 41 53.0   23.0r 04XX190   697  Cq9918      
2005 12  04.41527  04 55 28.46   +22 41 53.0   23.1r 04XX190   697  Cq9918      
2005 12  05.36885  04 55 23.23   +22 41 44.9   23.5r 04XX190   697  Cq9918      
2005 12  05.41756  04 55 22.97   +22 41 44.3   23.0r 04XX190   697  Cq9918      
2005 12  06.37454  04 55 17.81   +22 41 37.2   22.9r 04XX190   697  Cq9918      
2005 12  06.42560  04 55 17.50   +22 41 36.8   23.2r 04XX190   697  Cq9918      
2005 12  24.27680  04 53 42.39   +22 39 13.8   23.7g 04XX190   568  C~0DpO      
2005 12  24.37434  04 53 41.88   +22 39 13.0   23.5g 04XX190   568  C~0DpO      
2005 12  24.40878  04 53 41.70   +22 39 13.0   23.8g 04XX190   568  C~0DpO      
2005 12  25.41238  04 53 36.60   +22 39 05.0   23.7g 04XX190   568  C~0DpO      
2006 01  31.246214 04 51 10.52   +22 35 22.3   22.1V 04XX190   645  C~2JxC      
2006 01  31.247043 04 51 10.52   +22 35 22.1   22.0V 04XX190   645  C~2JxC      
2006 01  31.249531 04 51 10.53   +22 35 22.1   23.6V 04XX190   645  C~2JxC      
2008 09  18.07254  05 18 23.41   +23 17 22.4   24.1R 04XX190   250  S~06Am      
2008 09  18.07949  05 18 23.41   +23 17 22.4         04XX190   250  S~06Am      
2008 09  18.08574  05 18 23.42   +23 17 22.4         04XX190   250  S~06Am      
2008 09  18.13574  05 18 23.43   +23 17 22.5         04XX190   250  S~06Am      
2020 01  18.317240 06 19 17.688  +23 59 40.02  21.8G 04XX190   G37  C~3iMZ      
2020 01  18.349380 06 19 17.551  +23 59 40.06        04XX190   G37  C~3iMZ      

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     0.16       0.00     0.43
  2   0.0001      0.00     0.03       0.00     0.37
  3   0.0001      0.00    -0.11       0.00     0.52
  4   0.9885      0.00    -0.14       0.00     0.28
  5   0.9886      0.00    -0.18       0.00     0.33
  6   0.9887      0.00    -0.18       0.00     0.42
  7   0.9910      0.00     0.03       0.00     0.21
  8   1.7991      0.00     0.13       0.00     0.07
  9   1.7992      0.00     0.03       0.00     0.05
 10   1.8017      0.00     0.08       0.00     0.14
 11   1.8019      0.00     0.04       0.00    -0.06
 12   1.9687      0.00     0.04       0.00     0.05
 13   1.9688      0.00     0.23       0.00     0.36
 14   1.9714      0.00    -0.60       0.00    -0.16
 15   1.9715      0.00    -0.47       0.00    -0.36
 16   1.9741      0.00     0.07       0.00     0.16
 17   1.9743      0.00    -0.36       0.00     0.18
 18   2.0231      0.00     0.19       0.00    -1.02
 19   2.0234      0.00     0.15       0.00    -1.08
 20   2.0235      0.00     0.15       0.00    -0.82
 21   2.0262      0.00     0.40       0.00    -1.07
 22   2.1271      0.00    -0.00       0.00     0.20
 23   2.1271      0.00     0.03       0.00     0.01
 24   2.1271      0.00     0.27       0.00     0.02
 25   4.7577      0.00    -0.07       0.00     0.16
 26   4.7577      0.00    -0.11       0.00     0.15
 27   4.7577      0.00     0.00       0.00     0.14
 28   4.7579      0.00    -0.13       0.00     0.19
 29  16.0903      0.00    -0.17       0.00     0.10
 30  16.0904      0.00     0.18       0.00     0.07

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.

04XX190    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.588    45.588    45.588
ecceobj         0.112     0.112     0.112
incobj          1.577     1.577     1.577
qmin           39.451    39.457    39.457
qmax           51.402    51.391    51.407
amean          45.247    45.247    45.247
amin           44.878    44.877    44.874
amax           45.664    45.658    45.667
emean           0.110     0.110     0.110
emin            0.096     0.096     0.096
emax            0.126     0.126     0.126
imean           0.658     0.658     0.658
imin            0.082     0.082     0.082
imax            1.065     1.064     1.065
excite_mean     0.111     0.111     0.111
fracstop        1.000     1.000     1.000
cjmean          3.102     3.102     3.102

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       168.9     168.9     168.9
kozaiamp        180.0     180.0     180.0