Orbit Fit and Astrometric record for 03TH58

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: 03TH58    
# Created Thu Nov 15 02:08:21 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:   5.72y
# First observation: 2002/12/31
#  Last observation: 2008/09/20
# Chi-squared of fit:    55.25 DOF:   54 RMS:  0.24
# Min/Max residuals:    -0.70    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.484817E-05  2.769958E-02 -7.721214E-06 -1.466156E-02  2.858337E-02  6.634817E-05
# Covariance matrix:
  3.0969E-13 -1.6469E-13 -5.4328E-14  6.0171E-14 -1.1725E-13 -6.9727E-13
 -1.6469E-13  1.3313E-13  4.7495E-14 -5.2742E-14  4.6090E-14  6.1475E-13
 -5.4328E-14  4.7495E-14  1.5856E-13 -6.1229E-14  2.4526E-14  2.5471E-13
  6.0171E-14 -5.2742E-14 -6.1229E-14  4.1557E-14 -2.6929E-14 -2.8270E-13
 -1.1725E-13  4.6090E-14  2.4526E-14 -2.6929E-14  1.4715E-13  3.0613E-13
 -6.9727E-13  6.1475E-13  2.5471E-13 -2.8270E-13  3.0613E-13  3.2914E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.195456   68.383482   -0.501494    0.017522   -0.839962  2452639.664070
# Heliocentric elements and errors
Epoch:              2452640.5000  =  2003/01/01
Mean Anomaly:            6.90032 +/-     0.030
Argument of Peri:      169.12176 +/-     0.037
Long of Asc Node:      251.39732 +/-     0.000
Inclination:            27.88235 +/-     0.000
Eccentricity:         0.09528391 +/-    0.0000
Semi-Major Axis:     39.56992878 +/-    0.0023
Time of Perihelion: 2450897.8392 +/-       7.7
Perihelion:          35.79955132 +/-    0.0027
Aphelion:            43.34030623 +/-    0.0031
Period (y)              248.9179 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.72699070 +/-    0.0002
Ecliptic Y           33.48857805 +/-    0.0004
Ecliptic Z            0.72963601 +/-    0.0000
Ecliptic XDOT        -0.00246059 +/-    0.0000
Ecliptic YDOT         0.00100654 +/-    0.0000
Ecliptic ZDOT        -0.00140371 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.83284764 +/-    0.0004
Geocenter to KBO     34.98542549 +/-    0.0005
# Hcoef:  7.48

The following table shows the complete astrometric record for 03TH58. 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 (03TH58) followed by the observatory code and reference code for the source of the astrometry.

2002 12  31.163327 04 25 44.59   +22 53 01.5   22.6V 03TH58    645  C~1RHR      
2002 12  31.164157 04 25 44.58   +22 53 01.5   22.4V 03TH58    645  C~1RHR      
2002 12  31.166644 04 25 44.57   +22 53 01.4   23.3V 03TH58    645  C~1RHR      
2003 10  03.45706  04 40 42.78   +22 44 53.0   22.8i 03TH58    568  Cq9898      
2003 10  03.50790  04 40 42.66   +22 44 52.4   22.7i 03TH58    568  Cq9898      
2003 10  03.56923  04 40 42.50   +22 44 51.7   22.7i 03TH58    568  Cq9898      
2003 12  16.32472  04 34 30.89   +22 22 52.7   22.5g 03TH58    568  Cq9898      
2003 12  16.35119  04 34 30.73   +22 22 52.0   22.4g 03TH58    568  Cq9898      
2003 12  16.37749  04 34 30.57   +22 22 51.5   22.5g 03TH58    568  Cq9898      
2003 12  17.39650  04 34 24.53   +22 22 30.5         03TH58    568  Cq9898      
2003 12  17.42928  04 34 24.33   +22 22 29.9         03TH58    568  Cq9898      
2004 09  11.48953  04 48 12.81   +22 11 08.8         03TH58    695  Cq9898      
2004 09  12.48215  04 48 13.13   +22 11 00.9         03TH58    695  Cq9898      
2004 09  16.47160  04 48 13.21   +22 10 26.6         03TH58    675  Cq9898      
2004 09  17.46085  04 48 12.92   +22 10 17.6         03TH58    675  Cq9898      
2004 09  18.43761  04 48 12.53   +22 10 08.5         03TH58    675  Cq9898      
2005 11  04.48734  04 53 03.70   +21 20 46.7   22.5R 03TH58    695  Cq9898      
2005 11  04.52093  04 53 03.47   +21 20 46.3   22.5R 03TH58    695  Cq9898      
2005 11  05.51394  04 52 58.52   +21 20 28.8   22.5R 03TH58    695  Cq9898      
2005 12  24.27044  04 48 12.47   +21 05 33.9   23.0g 03TH58    568  C~0DoF      
2005 12  24.36845  04 48 11.90   +21 05 32.2   23.1g 03TH58    568  C~0DoF      
2005 12  24.40264  04 48 11.70   +21 05 31.7   23.1g 03TH58    568  C~0DoF      
2005 12  25.40633  04 48 05.98   +21 05 14.2   23.1g 03TH58    568  C~0DoF      
2006 01  31.240791 04 45 25.08   +20 56 20.7         03TH58    645  C~1RHR      
2006 01  31.241620 04 45 25.07   +20 56 20.7         03TH58    645  C~1RHR      
2006 01  31.244108 04 45 25.07   +20 56 20.7         03TH58    645  C~1RHS      
2008 09  20.45657  05 15 58.01   +19 31 07.8   23.8R 03TH58    250  S~06Ae      
2008 09  20.46282  05 15 58.01   +19 31 07.7         03TH58    250  S~06Ae      
2008 09  20.46976  05 15 58.01   +19 31 07.6         03TH58    250  S~06Ae      
2008 09  20.47601  05 15 58.01   +19 31 07.5         03TH58    250  S~06Ae      

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     0.12       0.00    -0.06
  2   0.0000      0.00     0.03       0.00    -0.05
  3   0.0000      0.00     0.08       0.00    -0.09
  4   0.7565      0.00    -0.03       0.00     0.26
  5   0.7566      0.00    -0.01       0.00     0.24
  6   0.7568      0.00    -0.20       0.00     0.25
  7   0.9587      0.00     0.00       0.00     0.14
  8   0.9588      0.00     0.00       0.00    -0.02
  9   0.9588      0.00    -0.01       0.00     0.02
 10   0.9616      0.00     0.07       0.00     0.05
 11   0.9617      0.00     0.03       0.00     0.12
 12   1.6984      0.00    -0.20       0.00     0.19
 13   1.7011      0.00    -0.07       0.00     0.25
 14   1.7120      0.00     0.25       0.00     0.09
 15   1.7147      0.00     0.11       0.00     0.08
 16   1.7174      0.00     0.13       0.00     0.06
 17   2.8455      0.00     0.19       0.00    -0.07
 18   2.8456      0.00    -0.70       0.00     0.13
 19   2.8483      0.00     0.20       0.00     0.06
 20   2.9818      0.00    -0.33       0.00    -0.59
 21   2.9821      0.00    -0.31       0.00    -0.59
 22   2.9822      0.00    -0.31       0.00    -0.50
 23   2.9849      0.00    -0.21       0.00    -0.53
 24   3.0858      0.00     0.36       0.00    -0.12
 25   3.0858      0.00     0.25       0.00    -0.12
 26   3.0858      0.00     0.35       0.00    -0.09
 27   5.7229      0.00     0.09       0.00     0.29
 28   5.7229      0.00     0.09       0.00     0.28
 29   5.7229      0.00     0.08       0.00     0.28
 30   5.7230      0.00     0.08       0.00     0.26

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.

03TH58    quality flag:3

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

axisobj        39.665    39.665    39.665
ecceobj         0.098     0.098     0.098
incobj         27.866    27.866    27.866
qmin           35.120    35.122    35.029
qmax           44.200    44.139    44.181
amean          39.457    39.457    39.457
amin           39.060    39.063    39.064
amax           39.871    39.886    39.862
emean           0.085     0.084     0.085
emin            0.059     0.059     0.061
emax            0.111     0.111     0.110
imean          29.377    29.378    29.374
imin           29.033    29.033    29.031
imax           29.769    29.770    29.768
excite_mean     0.498     0.498     0.498
fracstop        1.000     1.000     1.000
cjmean          2.751     2.751     2.751

libcent 0       180.6     181.2     180.9
libamp  0       102.9     104.5     103.0
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       178.0     178.4     177.7
kozaiamp        180.0     180.0     180.0