Orbit Fit and Astrometric record for 01KE77

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: 01KE77    
# Created Thu Oct 18 01:07:53 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   12 observations of   12
# Arc:   6.95y
# First observation: 2001/05/24
#  Last observation: 2008/05/04
# Chi-squared of fit:    14.32 DOF:   18 RMS:  0.19
# Min/Max residuals:    -0.28    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.635920E-05  2.662511E-02  6.413295E-06  1.005561E-02  2.649176E-02  3.323830E-03
# Covariance matrix:
  3.6786E-13 -1.0698E-13  1.0048E-14 -1.2254E-14  2.3349E-13 -1.9733E-13
 -1.0698E-13  1.6139E-13 -2.3518E-14  5.1974E-14  2.1132E-14  8.2665E-13
  1.0048E-14 -2.3518E-14  2.3533E-13 -5.3572E-14 -3.9193E-15 -1.3681E-13
 -1.2254E-14  5.1974E-14 -5.3572E-14  3.8942E-14  3.0736E-14  3.1714E-13
  2.3349E-13  2.1132E-14 -3.9193E-15  3.0736E-14  5.4150E-13  4.8348E-13
 -1.9733E-13  8.2665E-13 -1.3681E-13  3.1714E-13  4.8348E-13  5.0405E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.586879 -110.384631    0.116198    0.063213   -1.010483  2452053.725883
# Heliocentric elements and errors
Epoch:              2452054.5000  =  2001/05/25
Mean Anomaly:           31.81352 +/-     0.018
Argument of Peri:      324.56646 +/-     0.027
Long of Asc Node:      240.31526 +/-     0.000
Inclination:            21.04541 +/-     0.000
Eccentricity:         0.18116619 +/-    0.0001
Semi-Major Axis:     45.18148635 +/-    0.0063
Time of Perihelion: 2442251.7395 +/-       5.9
Perihelion:          36.99612848 +/-    0.0069
Aphelion:            53.36684422 +/-    0.0087
Period (y)              303.7029 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -13.58006021 +/-    0.0004
Ecliptic Y          -36.21776909 +/-    0.0010
Ecliptic Z            2.36180489 +/-    0.0001
Ecliptic XDOT         0.00247413 +/-    0.0000
Ecliptic YDOT        -0.00121660 +/-    0.0000
Ecliptic ZDOT         0.00105887 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.75199765 +/-    0.0009
Geocenter to KBO     37.74755446 +/-    0.0010
# Hcoef:  7.19

The following table shows the complete astrometric record for 01KE77. 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 (01KE77) followed by the observatory code and reference code for the source of the astrometry.

2001 05  24.22514  16 34 03.69   -18 20 41.7   22.9R 01KE77    807  Cd1817      
2001 05  24.28835  16 34 03.34   -18 20 40.5         01KE77    807  Cd1817      
2001 06  13.08041  16 32 18.53   -18 15 09.6   23.2R 01KE77    304  Cd1817      
2001 06  13.20773  16 32 17.83   -18 15 07.9         01KE77    304  Cd1817      
2001 08  19.06780  16 28 46.43   -18 05 30.5   22.0R 01KE77    807  Ch1324      
2001 08  21.07834  16 28 46.16   -18 05 30.2         01KE77    807  Ch1324      
2004 07  16.11448  16 49 31.99   -17 04 38.8   22.7R 01KE77    807  Cn3253      
2004 07  16.21538  16 49 31.60   -17 04 38.1         01KE77    807  Cn3253      
2005 04  14.34875  17 03 03.23   -17 02 40.3   23.1R 01KE77    304  Cn3253      
2005 04  14.37256  17 03 03.17   -17 02 39.9         01KE77    304  Cn3253      
2008 05  03.41466  17 20 48.66   -15 44 11.8         01KE77    695  Cz0380      
2008 05  04.43724  17 20 44.66   -15 43 55.3         01KE77    695  Cz0380      

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    -0.05       0.00    -0.08
  2   0.0002      0.00    -0.20       0.00    -0.00
  3   0.0544      0.00     0.52       0.00     0.26
  4   0.0547      0.00     0.08       0.00    -0.01
  5   0.2378      0.00    -0.03       0.00    -0.19
  6   0.2433      0.00     0.04       0.00    -0.28
  7   3.1455      0.00    -0.02       0.00    -0.11
  8   3.1458      0.00    -0.11       0.00    -0.07
  9   3.8908      0.00     0.03       0.00     0.34
 10   3.8909      0.00     0.15       0.00     0.35
 11   6.9437      0.00     0.08       0.00    -0.18
 12   6.9465      0.00     0.03       0.00    -0.15

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.

01KE77    quality flag:2

Type:       SCATNEAR  SCATNEAR  SCATEXTD

axisobj        45.193    45.193    45.193
ecceobj         0.180     0.180     0.180
incobj         21.043    21.043    21.043
qmin           36.025    35.987    36.020
qmax           55.398    55.418    55.464
amean          45.499    45.517    45.485
amin           45.057    45.079    45.062
amax           45.998    46.021    45.970
emean           0.186     0.186     0.186
emin            0.168     0.167     0.167
emax            0.206     0.206     0.207
imean          22.129    22.140    22.127
imin           21.555    21.550    21.557
imax           22.651    22.653    22.663
excite_mean     0.420     0.420     0.420
fracstop        1.000     1.000     1.000
cjmean          2.899     2.899     2.899

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       171.8     171.8     170.9
kozaiamp        180.0     180.0     179.9