Orbit Fit and Astrometric record for 03QB112

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: 03QB112   
# Created Sat Jan 19 02:08:21 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   18 observations of   18
# Arc:  11.09y
# First observation: 2003/08/26
#  Last observation: 2014/09/27
# Chi-squared of fit:    16.37 DOF:   30 RMS:  0.17
# Min/Max residuals:    -0.32    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.546527E-05  2.642869E-02  4.335846E-06  5.132235E-03  2.577712E-02  1.471608E-03
# Covariance matrix:
  3.0524E-13 -7.4328E-14  1.3335E-14 -1.0684E-14  1.9771E-13 -1.9767E-13
 -7.4328E-14  5.2931E-14 -1.1449E-14  9.2134E-15  2.5407E-14  1.7037E-13
  1.3335E-14 -1.1449E-14  1.6991E-13 -2.7228E-14 -3.8237E-15 -4.2826E-14
 -1.0684E-14  9.2134E-15 -2.7228E-14  9.0882E-15  3.2031E-15  3.4457E-14
  1.9771E-13  2.5407E-14 -3.8237E-15  3.2031E-15  6.1221E-13  5.8924E-14
 -1.9767E-13  1.7037E-13 -4.2826E-14  3.4457E-14  5.8924E-14  6.3717E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.063811   -0.755886    0.456554   -0.048384   -0.905104  2452877.803963
# Heliocentric elements and errors
Epoch:              2452878.5000  =  2003/08/27
Mean Anomaly:           21.19130 +/-     0.021
Argument of Peri:      318.52746 +/-     0.025
Long of Asc Node:       13.67497 +/-     0.000
Inclination:            11.36250 +/-     0.000
Eccentricity:         0.10436938 +/-    0.0001
Semi-Major Axis:     43.89794222 +/-    0.0061
Time of Perihelion: 2446625.0474 +/-       6.2
Perihelion:          39.31634138 +/-    0.0068
Aphelion:            48.47954307 +/-    0.0078
Period (y)              290.8536 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.63275589 +/-    0.0012
Ecliptic Y           -0.97531029 +/-    0.0000
Ecliptic Z           -2.07332410 +/-    0.0001
Ecliptic XDOT         0.00021699 +/-    0.0000
Ecliptic YDOT         0.00279864 +/-    0.0000
Ecliptic ZDOT         0.00053615 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.69890574 +/-    0.0012
Geocenter to KBO     38.79409035 +/-    0.0012
# Hcoef:  7.53

The following table shows the complete astrometric record for 03QB112. 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 (03QB112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  26.30322  00 02 06.34   -03 06 41.1   21.8R 03QB112   807  Ci4592      
2003 08  26.40767  00 02 05.87   -03 06 43.7         03QB112   807  Ci4592      
2003 09  03.14367  00 01 32.93   -03 10 08.7   23.2R 03QB112   304  Ci4592      
2003 09  03.21593  00 01 32.61   -03 10 10.7         03QB112   304  Ci4592      
2003 10  22.17400  23 57 48.89   -03 31 23.4   22.8R 03QB112   695  Cj4700      
2003 10  22.25889  23 57 48.53   -03 31 24.9         03QB112   695  Cj4700      
2006 08  21.22608  00 17 33.85   -00 28 19.5   22.3R 03QB112   807  Cs2604      
2006 08  21.29974  00 17 33.57   -00 28 21.4         03QB112   807  Cs2604      
2006 08  22.20621  00 17 30.26   -00 28 41.9         03QB112   807  Cs2604      
2006 10  19.23187  00 13 11.14   -00 53 57.9   23.0R 03QB112   695  Ct0452      
2006 10  19.32416  00 13 10.71   -00 54 00.7         03QB112   695  Ct0452      
2006 10  20.28926  00 13 06.55   -00 54 22.5         03QB112   695  Ct0452      
2008 09  20.24963  00 25 27.85   +01 02 39.9   25.4R 03QB112   250  S~06Ad      
2008 09  20.31074  00 25 27.56   +01 02 38.4         03QB112   250  S~06Ad      
2008 09  20.31699  00 25 27.53   +01 02 38.3         03QB112   250  S~06Ad      
2008 09  20.33296  00 25 27.45   +01 02 37.8         03QB112   250  S~06Ad      
2014 09  27.41390  00 55 00.01   +06 07 06.8   23.8R 03QB112   695  C~1LJE      
2014 09  27.46699  00 54 59.77   +06 07 05.3         03QB112   695  C~1LJE      

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     0.24       0.00    -0.16
  2   0.0003      0.00    -0.28       0.00    -0.07
  3   0.0215      0.00     0.04       0.00     0.25
  4   0.0217      0.00     0.10       0.00     0.21
  5   0.1557      0.00     0.08       0.00    -0.25
  6   0.1559      0.00    -0.07       0.00    -0.02
  7   2.9868      0.00     0.06       0.00     0.19
  8   2.9870      0.00    -0.06       0.00    -0.05
  9   2.9895      0.00    -0.22       0.00    -0.07
 10   3.1483      0.00     0.22       0.00     0.32
 11   3.1486      0.00    -0.13       0.00    -0.32
 12   3.1512      0.00    -0.21       0.00     0.33
 13   5.0704      0.00     0.19       0.00    -0.17
 14   5.0705      0.00     0.11       0.00    -0.00
 15   5.0705      0.00     0.10       0.00     0.07
 16   5.0706      0.00     0.02       0.00     0.00
 17  11.0886      0.00    -0.11       0.00     0.10
 18  11.0887      0.00     0.05       0.00    -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.

03QB112    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.388    44.388    44.388
ecceobj         0.114     0.114     0.114
incobj         11.313    11.313    11.313
qmin           38.637    38.636    38.639
qmax           49.839    49.836    49.833
amean          44.101    44.102    44.100
amin           43.742    43.742    43.741
amax           44.495    44.495    44.487
emean           0.107     0.107     0.107
emin            0.094     0.094     0.094
emax            0.121     0.121     0.121
imean          11.076    11.074    11.074
imin           10.467    10.456    10.456
imax           11.688    11.688    11.688
excite_mean     0.220     0.220     0.220
fracstop        1.000     1.000     1.000
cjmean          3.044     3.044     3.044

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       177.8     177.6     177.9
kozaiamp        179.9     179.9     179.9