Orbit Fit and Astrometric record for 01HZ58

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: 01HZ58    
# Created Sat Oct 21 01:37:12 2017
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc:  14.08y
# First observation: 2001/04/26
#  Last observation: 2015/05/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000514   0.022916   0.000018  -0.000720   0.023877   0.000000
# Chi-squared of fit:    65.19 DOF:   46 RMS:  0.28
# Min/Max residuals:    -0.77    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.509076E-05  2.255064E-02 -1.163729E-06 -7.109302E-04  2.371878E-02  8.175690E-04
# Covariance matrix:
  1.3464E-13 -2.6508E-14 -8.9311E-17  6.4329E-16  1.4190E-13 -6.8647E-14
 -2.6508E-14  2.7035E-14  7.5957E-16 -7.8735E-16  2.0924E-14  8.3333E-14
 -8.9311E-17  7.5957E-16  8.7274E-14 -9.0325E-15  2.6977E-15  2.4746E-15
  6.4329E-16 -7.8735E-16 -9.0325E-15  2.6336E-15 -3.1782E-16 -2.7064E-15
  1.4190E-13  2.0924E-14  2.6977E-15 -3.1782E-16  7.2400E-13  3.1117E-14
 -6.8647E-14  8.3333E-14  2.4746E-15 -2.7064E-15  3.1117E-14  2.8659E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.373984 -143.491702    0.008971    0.041819   -1.011514  2452025.564443
# Heliocentric elements and errors
Epoch:              2452020.5000  =  2001/04/21
Mean Anomaly:          108.64205 +/-     0.154
Argument of Peri:       14.92227 +/-     0.138
Long of Asc Node:       88.52469 +/-     0.002
Inclination:             2.94012 +/-     0.000
Eccentricity:         0.04076832 +/-    0.0000
Semi-Major Axis:     42.54891006 +/-    0.0059
Time of Perihelion: 2421427.1862 +/-      42.8
Perihelion:          40.81426251 +/-    0.0059
Aphelion:            44.28355762 +/-    0.0063
Period (y)              277.5498 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.67343948 +/-    0.0012
Ecliptic Y          -25.65182829 +/-    0.0009
Ecliptic Z            1.74631217 +/-    0.0001
Ecliptic XDOT         0.00146174 +/-    0.0000
Ecliptic YDOT        -0.00214779 +/-    0.0000
Ecliptic ZDOT        -0.00007789 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.16611293 +/-    0.0011
Geocenter to KBO     42.16068472 +/-    0.0015
# Hcoef:  6.29

The following table shows the complete astrometric record for 01HZ58. 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 (01HZ58) followed by the observatory code and reference code for the source of the astrometry.

2001 04  26.06370  14 19 54.61   -11 26 46.0   22.7R 01HZ58    809  Cd0940      
2001 04  26.06370  14 19 54.61   -11 26 46.1   21.7R 01HZ58    I03  Cl0812      
2001 04  26.17021  14 19 54.12   -11 26 43.3         01HZ58    809  Cd0940      
2001 04  26.17021  14 19 54.12   -11 26 44.0   21.5R 01HZ58    I03  Cl0812      
2001 04  26.29482  14 19 53.52   -11 26 40.6         01HZ58    809  Cd0940      
2001 04  26.29482  14 19 53.52   -11 26 41.6   21.8R 01HZ58    I03  Cl0812      
2001 04  26.40156  14 19 53.06   -11 26 38.2         01HZ58    809  Cd0940      
2001 04  27.13784  14 19 49.70   -11 26 21.4         01HZ58    809  Cd0940      
2001 04  27.30981  14 19 48.91   -11 26 17.5         01HZ58    809  Cd0940      
2001 04  27.36375  14 19 48.66   -11 26 16.2         01HZ58    809  Cd0940      
2001 05  25.21555  14 17 47.24   -11 16 33.1         01HZ58    309  Cd1312      
2001 05  25.22042  14 17 47.22   -11 16 33.0         01HZ58    309  Cd1312      
2001 05  25.22712  14 17 47.20   -11 16 32.9   23. R 01HZ58    309  Cd1312      
2003 06  01.01684  14 27 12.24   -12 09 18.5   21.6R 01HZ58    807  Ci2655      
2003 06  01.10585  14 27 11.90   -12 09 16.9         01HZ58    807  Ci2655      
2003 07  06.27623  14 25 36.68   -12 03 10.6   22.7R 01HZ58    568  Ci2655      
2003 07  06.34710  14 25 36.61   -12 03 10.5         01HZ58    568  Ci2655      
2007 05  03.51003  14 49 08.37   -14 03 16.1   22.8R 01HZ58    250  S~06AP      
2007 05  03.51698  14 49 08.34   -14 03 16.0         01HZ58    250  S~06AP      
2007 05  03.52392  14 49 08.30   -14 03 15.9         01HZ58    250  S~06AP      
2007 05  03.53087  14 49 08.27   -14 03 15.7         01HZ58    250  S~06AP      
2007 05  08.24318  14 48 46.51   -14 01 39.6   22.2R 01HZ58    304  Cu8806      
2007 05  08.28983  14 48 46.27   -14 01 38.6         01HZ58    304  Cu8806      
2015 05  22.26927  15 27 53.60   -17 05 49.4   23.1V 01HZ58    W84  C~1TiY      
2015 05  23.18226  15 27 49.35   -17 05 34.7         01HZ58    W84  C~1TiY      
2015 05  24.18154  15 27 44.68   -17 05 18.6         01HZ58    W84  C~1TiY      

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    -0.01       0.00     0.14
  2   0.0000      0.03     0.02      -0.09     0.05
  3   0.0003     -7.69    -0.05       0.20     0.42
  4   0.0003     -7.46     0.18      -0.46    -0.24
  5   0.0006    -16.58     0.02      -1.07    -0.77
  6   0.0006    -16.91    -0.30      -0.12     0.18
  7   0.0009    -24.09     0.17      -0.06     0.28
  8   0.0029    -76.26    -0.02      -0.30     0.24
  9   0.0034    -88.51     0.11      -0.40     0.26
 10   0.0036    -92.41     0.08      -0.37     0.31
 11   0.0798  -1970.61    -0.10     -33.46     0.33
 12   0.0798  -1970.92    -0.11     -33.46     0.34
 13   0.0798  -1971.23    -0.01     -33.46     0.35
 14   2.0971   6908.34     0.05    -339.13    -0.24
 15   2.0973   6903.09     0.07    -339.21    -0.09
 16   2.1936   5461.54    -0.28    -440.19    -0.56
 17   2.1938   5460.54     0.27    -440.43    -0.54
 18   6.0190  27465.46    -0.15    -884.01    -0.37
 19   6.0190  27465.01    -0.11    -884.04    -0.41
 20   6.0191  27464.41    -0.21    -884.12    -0.48
 21   6.0191  27463.93    -0.19    -884.06    -0.41
 22   6.0320  27127.23     0.42    -887.18     0.26
 23   6.0321  27123.54     0.11    -887.27     0.22
 24  14.0704  64615.26    -0.37   -2112.82     0.20
 25  14.0729  64546.45     0.13   -2114.15     0.24
 26  14.0756  64470.87     0.28   -2115.68     0.27

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.

01HZ58    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.474    42.491    42.456
ecceobj         0.040     0.039     0.040
incobj          2.939     2.939     2.939
qmin           39.517    39.521    39.458
qmax           46.261    46.312    46.341
amean          42.779    42.797    42.761
amin           42.448    42.463    42.426
amax           43.126    43.154    43.122
emean           0.050     0.050     0.050
emin            0.028     0.028     0.028
emax            0.073     0.073     0.075
imean           1.338     1.334     1.342
imin            0.059     0.071     0.048
imax            2.382     2.362     2.408
excite_mean     0.056     0.056     0.056
fracstop        1.000     1.000     1.000
cjmean          3.083     3.084     3.083

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       171.5     172.0     170.7
kozaiamp        179.9     180.0     179.9