Orbit Fit and Astrometric record for 01KQ76

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: 01KQ76    
# Created Sun Dec  5 02:09:03 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     12 observations of     12
# Arc:  18.98y
# First observation: 2001/05/24
#  Last observation: 2020/05/15
# Chi-squared of fit:     4.20 DOF:     18 RMS:  0.10
# Min/Max residuals:    -0.23    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.522897E-05  2.388039E-02 -1.475503E-06 -2.522784E-03  2.449878E-02 -2.589349E-03
# Covariance matrix:
  4.1761E-13 -4.3709E-14 -4.8652E-16  2.0035E-15  4.7733E-13 -3.9894E-14
 -4.3709E-14  3.2446E-14  2.3262E-15 -3.2416E-15 -9.2421E-15  6.2574E-14
 -4.8652E-16  2.3262E-15  3.5406E-13 -2.0723E-14  1.2224E-14  4.9300E-15
  2.0035E-15 -3.2416E-15 -2.0723E-14  2.0060E-15 -3.5445E-15 -6.6593E-15
  4.7733E-13 -9.2421E-15  1.2224E-14 -3.5445E-15  4.7897E-12  5.5997E-14
 -3.9894E-14  6.2574E-14  4.9300E-15 -6.6593E-15  5.5997E-14  1.2835E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.598592 -147.408963   -0.513722    0.024438   -0.879747  2452053.514313
# Heliocentric elements and errors
Epoch:              2452054.5000  =  2001/05/25
Mean Anomaly:          288.18588 +/-     0.127
Argument of Peri:      248.04093 +/-     0.159
Long of Asc Node:       47.72066 +/-     0.000
Inclination:             6.25775 +/-     0.000
Eccentricity:         0.09547494 +/-    0.0001
Semi-Major Axis:     42.59995070 +/-    0.0156
Time of Perihelion: 2472313.5663 +/-      57.2
Perihelion:          38.53272298 +/-    0.0144
Aphelion:            46.66717842 +/-    0.0173
Period (y)              278.0493 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.83860001 +/-    0.0031
Ecliptic Y          -22.87984796 +/-    0.0020
Ecliptic Z            1.13863781 +/-    0.0001
Ecliptic XDOT         0.00166617 +/-    0.0000
Ecliptic YDOT        -0.00209467 +/-    0.0000
Ecliptic ZDOT        -0.00028970 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.69552615 +/-    0.0028
Geocenter to KBO     40.81847225 +/-    0.0036
# Hcoef:  6.50

The following table shows the complete astrometric record for 01KQ76. 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 (01KQ76) followed by the observatory code and reference code for the source of the astrometry.

2001 05  24.01357  14 03 48.55   -10 52 11.7   22.4R 01KQ76    807  Cd1817      
2001 05  24.12181  14 03 48.11   -10 52 09.7         01KQ76    807  Cd1817      
2001 06  09.00485  14 02 52.24   -10 47 58.8   23.0R 01KQ76    304  Cd1817      
2001 06  09.05390  14 02 52.09   -10 47 58.2         01KQ76    304  Cd1817      
2015 05  20.12607  15 19 43.00   -18 55 14.8         01KQ76    W84  C~2zrF      
2015 05  21.12629  15 19 37.94   -18 54 57.2   23.2V 01KQ76    W84  C~2zrF      
2015 05  23.11956  15 19 27.90   -18 54 22.5         01KQ76    W84  C~2zrF      
2019 06  06.285850 15 41 59.171  -20 53 06.39  22.4G 01KQ76    G37  C~36iU      
2019 06  06.327330 15 41 58.958  -20 53 05.75        01KQ76    G37  C~36iU      
2020 05  15.46027  15 49 53.664  -21 27 20.37  22.1w 01KQ76    F51  C~3skw      
2020 05  15.47136  15 49 53.607  -21 27 20.58  22.3w 01KQ76    F51  C~3skw      
2020 05  15.48232  15 49 53.538  -21 27 20.09  22.2w 01KQ76    F51  C~3skw      

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     0.03       0.00    -0.04
     2   0.0003      0.00    -0.02       0.00    -0.03
     3   0.0438      0.00    -0.00       0.00     0.06
     4   0.0439      0.00     0.04       0.00     0.02
     5  13.9880      0.00    -0.23       0.00    -0.02
     6  13.9907      0.00    -0.06       0.00     0.05
     7  13.9962      0.00     0.27       0.00    -0.10
     8  18.0350      0.00     0.01       0.00    -0.01
     9  18.0351      0.00    -0.06       0.00     0.00
    10  18.9773      0.00     0.04       0.00     0.16
    11  18.9773      0.00     0.07       0.00    -0.21
    12  18.9773      0.00    -0.08       0.00     0.12

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.

01KQ76    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.527    42.527    42.527
ecceobj         0.097     0.097     0.097
incobj          6.263     6.263     6.263
qmin           37.980    37.977    37.983
qmax           47.939    47.942    47.934
amean          42.852    42.852    42.852
amin           42.493    42.506    42.504
amax           43.217    43.213    43.223
emean           0.086     0.086     0.086
emin            0.061     0.061     0.060
emax            0.110     0.110     0.110
imean           4.093     4.093     4.093
imin            2.503     2.503     2.503
imax            5.649     5.649     5.649
excite_mean     0.113     0.113     0.113
fracstop        1.000     1.000     1.000
cjmean          3.073     3.073     3.073

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       180.9     181.0     180.8
kozaiamp        180.0     180.0     179.9