Orbit Fit and Astrometric record for 01KG77

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: 01KG77    
# Created Sat Dec 16 02:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   1.94y
# First observation: 2001/05/23
#  Last observation: 2003/05/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000095   0.036125  -0.000045   0.009878   0.029424   0.000000
# Chi-squared of fit:    34.35 DOF:   24 RMS:  0.27
# Min/Max residuals:    -0.45    0.53
# Exact a, adot, b, bdot, g, gdot:
  2.101876E-05  3.592817E-02  4.729070E-06  9.822706E-03  2.949374E-02 -4.934479E-03
# Covariance matrix:
  2.8452E-13 -2.8837E-13  3.9358E-15 -2.3622E-14  6.7835E-14 -1.3447E-12
 -2.8837E-13  1.0656E-12 -4.7771E-14  2.3571E-13  3.2226E-13  1.3375E-11
  3.9358E-15 -4.7771E-14  2.4103E-13 -1.9531E-13 -2.6007E-14 -7.9541E-13
 -2.3622E-14  2.3571E-13 -1.9531E-13  3.0359E-13  1.1422E-13  3.8757E-12
  6.7835E-14  3.2226E-13 -2.6007E-14  1.1422E-13  4.9228E-13  6.4667E-12
 -1.3447E-12  1.3375E-11 -7.9541E-13  3.8757E-12  6.4667E-12  2.1987E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.443252 -118.120510   -0.003541   -0.043564   -1.017989  2452052.691053
# Heliocentric elements and errors
Epoch:              2452050.5000  =  2001/05/21
Mean Anomaly:          351.36011 +/-     0.022
Argument of Peri:       15.69762 +/-     0.067
Long of Asc Node:      250.46661 +/-     0.000
Inclination:            15.51962 +/-     0.001
Eccentricity:         0.44451845 +/-    0.0002
Semi-Major Axis:     61.10409206 +/-    0.0195
Time of Perihelion: 2456237.5649 +/-      10.5
Perihelion:          33.94219553 +/-    0.0184
Aphelion:            88.26598859 +/-    0.0318
Period (y)              477.6542 +/-      0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.43911665 +/-    0.0004
Ecliptic Y          -30.77134742 +/-    0.0007
Ecliptic Z           -1.44522771 +/-    0.0000
Ecliptic XDOT         0.00313043 +/-    0.0000
Ecliptic YDOT        -0.00120032 +/-    0.0000
Ecliptic ZDOT         0.00093072 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.91717430 +/-    0.0007
Geocenter to KBO     33.90550082 +/-    0.0008
# Hcoef:  8.06

The following table shows the complete astrometric record for 01KG77. 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 (01KG77) followed by the observatory code and reference code for the source of the astrometry.

2001 05  23.19031  15 56 59.83   -22 55 50.2   23.0R 01KG77    807  Cd1817      
2001 05  23.25457  15 56 59.46   -22 55 48.8         01KG77    807  Cd1817      
2001 06  13.06604  15 55 02.40   -22 47 55.8   23.3R 01KG77    304  Cd1817      
2001 06  13.19097  15 55 01.72   -22 47 53.2         01KG77    304  Cd1817      
2001 07  24.30788  15 52 24.59   -22 34 25.4         01KG77    568  Cd4418      
2001 07  25.27436  15 52 22.75   -22 34 11.1         01KG77    568  Cd4418      
2002 04  06.28355  16 10 09.54   -23 00 19.8   22.3R 01KG77    807  Cf4617      
2002 04  07.28868  16 10 06.14   -23 00 08.7         01KG77    807  Cf4617      
2002 04  07.38484  16 10 05.83   -23 00 07.5         01KG77    807  Cf4617      
2002 07  10.97191  16 02 09.69   -22 30 04.7   23.0R 01KG77    304  Cf9823      
2002 07  11.10104  16 02 09.21   -22 30 02.4         01KG77    304  Cf9823      
2002 07  13.06484  16 02 02.48   -22 29 27.9         01KG77    304  Cf9823      
2002 07  13.09932  16 02 02.35   -22 29 27.3         01KG77    304  Cf9823      
2003 05  01.52812  16 17 39.47   -22 42 36.0   24.1R 01KG77    568  Ch9866      
2003 05  01.57370  16 17 39.23   -22 42 35.2         01KG77    568  Ch9866      

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    -0.36       0.00     0.11
  2   0.0002     -5.29    -0.22       0.33     0.10
  3   0.0572  -1685.89     0.26     131.27     0.26
  4   0.0575  -1695.63     0.22     131.87     0.02
  5   0.1701  -3991.49     0.11     467.41     0.31
  6   0.1727  -4019.43    -0.23     476.01     0.16
  7   0.8709  10764.11     0.03    1837.63     0.20
  8   0.8736  10715.80    -0.04    1840.01    -0.45
  9   0.8739  10711.36     0.34    1840.41    -0.32
 10   1.1329   3893.96     0.11    2369.32    -0.37
 11   1.1332   3886.98    -0.04    2370.27    -0.38
 12   1.1386   3788.74     0.09    2385.90    -0.34
 13   1.1387   3786.85    -0.06    2386.14    -0.37
 14   1.9393  16728.50    -0.09    3983.71     0.51
 15   1.9394  16725.07    -0.12    3983.94     0.53

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.

01KG77    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        61.175    61.233    61.117
ecceobj         0.446     0.446     0.445
incobj         15.513    15.513    15.513
qmin           32.419    32.168    32.145
qmax           92.382    92.673    92.820
amean          60.659    60.574    61.016
amin           59.007    58.762    58.947
amax           62.963    62.787    63.038
emean           0.445     0.449     0.454
emin            0.414     0.421     0.425
emax            0.474     0.476     0.477
imean          16.094    15.705    15.500
imin           14.836    14.111    13.999
imax           17.588    17.000    16.819
excite_mean     0.525     0.524     0.527
fracstop        1.000     1.000     1.000
cjmean          2.938     2.937     2.937

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       164.8     170.0     163.9
kozaiamp        180.0     180.0     180.0