Orbit Fit and Astrometric record for 01DN108

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: 01DN108   
# Created Sat Aug 18 01:37:16 2018
# Orbit generated from Bernstein formalism
# Fitting    8 observations of    8
# Arc:   1.06y
# First observation: 2001/02/22
#  Last observation: 2002/03/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.010082  -0.000001  -0.002652   0.020807   0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit:    12.37 DOF:   11 RMS:  0.22
# Min/Max residuals:    -0.34    0.45
# Exact a, adot, b, bdot, g, gdot:
  6.838776E-06  1.013555E-02 -2.591473E-06 -2.706173E-03  2.081854E-02  1.764752E-02
# Covariance matrix:
  5.0435E-13  3.5506E-12  6.9306E-16 -1.8819E-13  1.0387E-11  6.7708E-11
  3.5506E-12  2.2231E-10  5.8914E-13 -1.7722E-10  1.8235E-10  6.2302E-08
  6.9306E-16  5.8914E-13  2.4846E-13 -8.4344E-13  1.3239E-13  2.1417E-10
 -1.8819E-13 -1.7722E-10 -8.4344E-13  1.8452E-10 -3.9060E-11 -6.4528E-08
  1.0387E-11  1.8235E-10  1.3239E-13 -3.9060E-11  4.2373E-10  1.3790E-08
  6.7708E-11  6.2302E-08  2.1417E-10 -6.4528E-08  1.3790E-08  2.2677E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.542050  153.459426   -0.015038    0.009212   -0.990807  2451963.033013
# Heliocentric elements and errors
Epoch:              2451960.5000  =  2001/02/20
Mean Anomaly:           27.50506 +/-    25.764
Argument of Peri:       35.82389 +/-     7.531
Long of Asc Node:      335.46138 +/-     0.007
Inclination:            14.93226 +/-     0.051
Eccentricity:         0.86737712 +/-    0.0876
Semi-Major Axis:     62.43841740 +/-   38.4738
Time of Perihelion: 2438192.0076 +/-    2092.5
Perihelion:           8.28076244 +/-    7.4817
Aphelion:           116.59607236 +/-   72.0532
Period (y)              493.3851 +/-    456.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.85937044 +/-    0.0425
Ecliptic Y           21.89630420 +/-    0.0212
Ecliptic Z            0.45431495 +/-    0.0004
Ecliptic XDOT        -0.00268308 +/-    0.0006
Ecliptic YDOT        -0.00015073 +/-    0.0003
Ecliptic ZDOT        -0.00033373 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.02345270 +/-    0.0392
Geocenter to KBO     48.03411930 +/-    0.0475
# Hcoef:  6.89

The following table shows the complete astrometric record for 01DN108. 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 (01DN108) followed by the observatory code and reference code for the source of the astrometry.

2001 02  22.53227  10 22 19.16   +10 44 36.3         01DN108   568  Ce0235      
2001 02  22.55536  10 22 19.05   +10 44 37.0         01DN108   568  Ce0235      
2001 02  22.59385  10 22 18.87   +10 44 38.2         01DN108   568  Ce0235      
2001 02  25.47763  10 22 06.21   +10 45 45.2         01DN108   568  Ce0235      
2001 02  25.51615  10 22 06.02   +10 45 46.1         01DN108   568  Ce0235      
2001 02  25.55464  10 22 05.84   +10 45 47.2   24.0R 01DN108   568  Ce0235      
2002 03  18.18449  10 22 37.805  +10 32 21.70  22.9R 01DN108   695              
2002 03  18.24387  10 22 37.596  +10 32 22.72        01DN108   695              

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     0.18       0.00     0.11
  2   0.0001     -1.76     0.02       0.07     0.22
  3   0.0002     -4.67    -0.21       0.22     0.45
  4   0.0081   -202.84     0.23      -4.88    -0.25
  5   0.0082   -205.77    -0.02      -5.06    -0.34
  6   0.0083   -208.64    -0.21      -4.99    -0.20
  7   1.0641    522.35    -0.23    -585.10     0.03
  8   1.0642    519.11     0.23    -585.26    -0.02

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.

01DN108    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0