Orbit Fit and Astrometric record for 01QE298

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: 01QE298   
# Created Tue Oct 24 01:37:13 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   7.44y
# First observation: 2001/05/23
#  Last observation: 2008/10/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000829   0.029899  -0.000044   0.001805   0.026513   0.000000
# Chi-squared of fit:   236.97 DOF:   44 RMS:  0.54
# Min/Max residuals:    -2.22    1.37
# Exact a, adot, b, bdot, g, gdot:
  1.849283E-05  2.868579E-02  2.293844E-06  1.722011E-03  2.634405E-02 -1.355641E-03
# Covariance matrix:
  3.2429E-13 -2.1270E-13  1.3882E-14 -1.6298E-14  1.5878E-13 -1.2168E-12
 -2.1270E-13  2.5631E-13 -1.3441E-14  1.8990E-14 -5.1598E-14  1.4371E-12
  1.3882E-14 -1.3441E-14  9.2344E-14 -1.8204E-14  7.7337E-15 -8.1349E-14
 -1.6298E-14  1.8990E-14 -1.8204E-14  9.5708E-15 -5.9513E-15  1.1138E-13
  1.5878E-13 -5.1598E-14  7.7337E-15 -5.9513E-15  1.8804E-13 -4.2541E-13
 -1.2168E-12  1.4371E-12 -8.1349E-14  1.1138E-13 -4.2541E-13  8.4111E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.325049  -12.115037    0.981079    0.006235    0.275106  2452052.834113
# Heliocentric elements and errors
Epoch:              2452050.5000  =  2001/05/21
Mean Anomaly:          336.02761 +/-     0.033
Argument of Peri:       11.50633 +/-     0.047
Long of Asc Node:        7.77199 +/-     0.001
Inclination:             3.65703 +/-     0.000
Eccentricity:         0.15846072 +/-    0.0000
Semi-Major Axis:     43.81404768 +/-    0.0041
Time of Perihelion: 2459104.3669 +/-       9.6
Perihelion:          36.87124213 +/-    0.0040
Aphelion:            50.75685324 +/-    0.0052
Period (y)              290.0202 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.63254205 +/-    0.0006
Ecliptic Y           -8.86000161 +/-    0.0001
Ecliptic Z           -0.87769709 +/-    0.0000
Ecliptic XDOT         0.00048361 +/-    0.0000
Ecliptic YDOT         0.00294580 +/-    0.0000
Ecliptic ZDOT         0.00018237 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.69898033 +/-    0.0006
Geocenter to KBO     37.95923881 +/-    0.0006
# Hcoef:  6.80

The following table shows the complete astrometric record for 01QE298. 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 (01QE298) followed by the observatory code and reference code for the source of the astrometry.

2001 05  23.33337  23 17 30.85   -06 00 30.9   22.6R 01QE298   807  Ch1433      
2001 05  23.41349  23 17 31.09   -06 00 29.4         01QE298   807  Ch1433      
2001 08  19.23189  23 15 34.61   -06 14 01.6   21.2R 01QE298   807  Cd7926      
2001 08  19.31453  23 15 34.23   -06 14 03.9         01QE298   807  Cd7926      
2001 08  20.29073  23 15 29.79   -06 14 31.9         01QE298   807  Cd7926      
2001 08  20.37625  23 15 29.36   -06 14 35.1         01QE298   807  Cd7926      
2001 10  11.05469  23 11 26.47   -06 38 56.3   22.6  01QE298   304  Ce9410      
2001 10  11.08410  23 11 26.21   -06 38 57.9         01QE298   304  Ce9410      
2001 10  20.21289  23 10 51.77   -06 42 11.7   22.6R 01QE298   695  Ce0366      
2001 10  20.29398  23 10 51.52   -06 42 13.4         01QE298   695  Ce0366      
2001 10  21.12132  23 10 48.66   -06 42 29.5         01QE298   695  Ce0366      
2002 08  05.06488  23 22 41.10   -05 22 12.6   22.5R 01QE298   950  Ch3951      
2002 08  05.10819  23 22 41.00   -05 22 13.8         01QE298   950  Ch3951      
2002 08  06.16259  23 22 37.04   -05 22 38.9         01QE298   950  Ch3951      
2002 08  10.30575  23 22 21.09   -05 24 20.4   21.7R 01QE298   807  Cg3218      
2002 08  10.40699  23 22 20.64   -05 24 23.7         01QE298   807  Cg3218      
2002 08  11.40921  23 22 16.62   -05 24 49.5         01QE298   807  Cg3218      
2003 05  31.58309  23 29 42.11   -04 29 48.6   23.4R 01QE298   568  Ci1433      
2003 06  01.58072  23 29 44.29   -04 29 35.5         01QE298   568  Ci1433      
2003 06  02.57879  23 29 46.35   -04 29 23.2         01QE298   568  Ci1433      
2007 11  11.14815  23 46 25.06   -02 12 47.6   22.8R 01QE298   688  Cw6710      
2007 11  11.22183  23 46 24.80   -02 12 48.9         01QE298   688  Cw6710      
2008 10  30.251235 23 53 09.52   -01 22 19.1         01QE298   645  C~1Qcu      
2008 10  30.252065 23 53 09.52   -01 22 19.1         01QE298   645  C~1Qcu      
2008 10  30.254552 23 53 09.51   -01 22 19.2         01QE298   645  C~1Qcu      

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    -0.26       0.00    -0.26
  2   0.0002      3.88     0.32      -0.02    -0.21
  3   0.2407  -1912.66     0.23     -69.02    -0.07
  4   0.2409  -1918.77     0.23     -68.93    -0.03
  5   0.2436  -1990.66    -0.30     -68.87    -0.19
  6   0.2438  -1997.81    -1.09     -69.32    -0.70
  7   0.3853  -5902.91     0.03      -5.86     0.18
  8   0.3854  -5907.11    -2.22      -5.83     0.13
  9   0.4103  -6455.69     0.41      14.78     0.01
 10   0.4106  -6459.79     0.90      14.66    -0.35
 11   0.4128  -6505.35     0.64      16.36    -0.59
 12   1.2012   5162.23    -0.47     298.50     0.63
 13   1.2013   5160.38     0.32     297.98     0.10
 14   1.2042   5096.10    -0.18     298.15     0.41
 15   1.2155   4837.03     1.37     298.44     0.81
 16   1.2158   4829.55     0.56     298.04     0.37
 17   1.2186   4764.17     0.69     297.91     0.24
 18   2.0212  12197.04    -0.34     707.19    -0.02
 19   2.0239  12232.28    -0.19     706.33    -0.06
 20   2.0267  12265.56    -0.50     705.44    -0.12
 21   6.4690  29429.46     0.10    2293.06    -0.12
 22   6.4692  29425.28    -0.85    2293.43     0.05
 23   7.4385  36372.06     0.17    2655.18    -0.06
 24   7.4385  36372.06     0.22    2655.18    -0.06
 25   7.4385  36371.88     0.19    2655.15    -0.10

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.

01QE298    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        44.030    44.042    44.017
ecceobj         0.162     0.162     0.162
incobj          3.650     3.650     3.650
qmin           36.073    36.065    36.053
qmax           51.844    51.823    51.814
amean          43.727    43.727    43.727
amin           43.324    43.316    43.317
amax           44.189    44.178    44.210
emean           0.142     0.144     0.141
emin            0.095     0.100     0.092
emax            0.174     0.174     0.174
imean           4.186     3.922     4.262
imin            1.198     1.021     1.273
imax            6.926     6.671     7.012
excite_mean     0.163     0.163     0.164
fracstop        1.000     1.000     1.000
cjmean          3.066     3.066     3.066

libcent 0       180.7     180.8     185.0
libamp  0        93.5      92.5      90.6
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        95.3     101.8      92.8
kozaiamp        179.9     179.9     179.5