Orbit Fit and Astrometric record for 01KH76

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: 01KH76    
# Created Tue Dec 12 02:37:11 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   19
# Arc:   4.91y
# First observation: 2001/05/22
#  Last observation: 2006/04/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000144   0.021902  -0.000009   0.001208   0.023011   0.000000
# Chi-squared of fit:    12.62 DOF:   26 RMS:  0.16
# Min/Max residuals:    -0.28    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.442127E-05  2.162491E-02  1.483776E-06  1.193760E-03  2.286037E-02 -2.534445E-03
# Covariance matrix:
  3.8103E-13 -3.4921E-13  7.6068E-15 -1.4502E-14  8.1850E-14 -2.2187E-12
 -3.4921E-13  8.5676E-13 -2.5046E-14  4.6250E-14  5.9523E-13  7.1095E-12
  7.6068E-15 -2.5046E-14  1.7485E-13 -4.7778E-14 -2.2658E-14 -2.2021E-13
 -1.4502E-14  4.6250E-14 -4.7778E-14  2.8556E-14  4.0429E-14  4.0487E-13
  8.1850E-14  5.9523E-13 -2.2658E-14  4.0429E-14  1.3512E-12  6.2474E-12
 -2.2187E-12  7.1095E-12 -2.2021E-13  4.0487E-13  6.2474E-12  6.2277E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.752094 -111.248376    0.134500   -0.013385   -1.009748  2452051.735213
# Heliocentric elements and errors
Epoch:              2452050.5000  =  2001/05/21
Mean Anomaly:          288.43123 +/-     0.052
Argument of Peri:       72.28059 +/-     0.059
Long of Asc Node:      261.60205 +/-     0.001
Inclination:             3.25967 +/-     0.000
Eccentricity:         0.12164268 +/-    0.0004
Semi-Major Axis:     45.87026385 +/-    0.0101
Time of Perihelion: 2474609.3180 +/-      14.5
Perihelion:          40.29048183 +/-    0.0195
Aphelion:            51.45004588 +/-    0.0207
Period (y)              310.6741 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.33918769 +/-    0.0008
Ecliptic Y          -41.65383550 +/-    0.0021
Ecliptic Z           -0.57412128 +/-    0.0000
Ecliptic XDOT         0.00251473 +/-    0.0000
Ecliptic YDOT        -0.00065518 +/-    0.0000
Ecliptic ZDOT         0.00014714 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.74752151 +/-    0.0020
Geocenter to KBO     43.74381976 +/-    0.0022
# Hcoef:  6.47

The following table shows the complete astrometric record for 01KH76. 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 (01KH76) followed by the observatory code and reference code for the source of the astrometry.

2001 05  22.23447  16 27 37.32   -22 30 14.1   22.0R 01KH76    807  Cd1817      
2001 05  22.31640  16 27 36.92   -22 30 13.0         01KH76    807  Cd1817      
2001 06  10.03301  16 26 07.10   -22 26 41.7   22.9R 01KH76    304  Cd1817      
2001 06  10.10826  16 26 06.74   -22 26 40.6         01KH76    304  Cd1817      
2002 04  11.42770  16 35 42.72   -22 43 08.5   21.3R 01KH76    695  Cg5781      
2002 04  11.47223  16 35 42.59   -22 43 08.1         01KH76    695  Cg5781      
2002 06  16.24174  16 30 59.51   -22 32 59.4   22.1R 01KH76    695  Cf8904      
2002 06  16.30401  16 30 59.24   -22 32 59.3         01KH76    695  Cf8904      
2002 06  17.28437  16 30 54.71   -22 32 48.6         01KH76    695  Cf8904      
2002 06  17.32334  16 30 54.50   -22 32 48.2   22.5R 01KH76    695  Cf8904      
2002 07  07.21296  16 29 30.71   -22 29 28.0   23.4R 01KH76    695  Cf8904      
2002 07  07.23947  16 29 30.59   -22 29 27.7   23.5R 01KH76    695  Cf8904      
2002 07  07.25742  16 29 30.53   -22 29 27.7   23.3R 01KH76    695  Cf8904      
2003 05  01.54943  16 39 56.02   -22 47 08.6   23.2R 01KH76    568  Ch9866      
2003 05  01.59532  16 39 55.82   -22 47 08.1         01KH76    568  Ch9866      
2006 04  20.37065  16 56 57.22   -23 03 22.1   22.1R 01KH76    250  S~06AP      
2006 04  20.37505  16 56 57.20   -23 03 22.0         01KH76    250  S~06AP      
2006 04  20.37945  16 56 57.19   -23 03 22.0         01KH76    250  S~06AP      
2006 04  20.43341  16 56 57.02   -23 03 21.7         01KH76    250  S~06AP      

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     0.11       0.00    -0.14
  2   0.0002     -5.65     0.05       0.22     0.04
  3   0.0515  -1268.38    -0.06      13.08    -0.12
  4   0.0517  -1273.48    -0.10      13.37     0.14
  5   0.8876   6763.98    -0.14     238.17     0.36
  6   0.8877   6762.14 (  -0.18)    238.31 (   0.50)
  7   1.0678   2793.85    -0.04     266.02     0.37
  8   1.0680   2790.14     0.36     265.55    -0.15
  9   1.0706   2726.47     0.25     266.68     0.06
 10   1.0707   2723.54    -0.13     266.64    -0.02
 11   1.1252   1545.45     0.03     288.31    -0.14
 12   1.1253   1543.76    -0.23     288.35    -0.13
 13   1.1253   1542.94    -0.10     288.22    -0.28
 14   1.9420  10273.22 (  -0.63)    488.14 (   0.71)
 15   1.9421  10270.40 (  -0.80)    488.26 (   0.82)
 16   4.9121  24501.24     0.05    1238.09    -0.05
 17   4.9121  24500.95    -0.05    1238.16     0.02
 18   4.9121  24500.81     0.01    1238.14     0.00
 19   4.9122  24498.41    -0.01    1238.19     0.03

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.

01KH76    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.927    45.958    45.897
ecceobj         0.124     0.125     0.123
incobj          3.255     3.255     3.255
qmin           39.800    39.774    39.826
qmax           52.951    52.980    52.830
amean          46.204    46.235    46.173
amin           45.820    45.844    45.779
amax           46.640    46.662    46.596
emean           0.123     0.124     0.122
emin            0.110     0.111     0.109
emax            0.136     0.136     0.135
imean           4.998     4.996     5.000
imin            4.500     4.498     4.502
imax            5.453     5.457     5.454
excite_mean     0.151     0.151     0.150
fracstop        1.000     1.000     1.000
cjmean          3.100     3.101     3.100

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       178.5     178.7     178.3
kozaiamp        179.9     180.0     180.0