Orbit Fit and Astrometric record for 03QX113

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: 03QX113   
# Created Thu Oct 23 01:37:20 2014
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   4.87y
# First observation: 2003/06/23
#  Last observation: 2008/05/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000200   0.012444  -0.000027  -0.001449   0.016820   0.000000
# Chi-squared of fit:    32.60 DOF:   40 RMS:  0.21
# Min/Max residuals:    -0.46    0.49
# Exact a, adot, b, bdot, g, gdot:
  9.109973E-06  1.259131E-02 -1.535126E-06 -1.472585E-03  1.731021E-02  2.566557E-03
# Covariance matrix:
  3.9410E-13 -5.9324E-14 -1.5851E-15 -1.2120E-15  2.6614E-13  2.7403E-13
 -5.9324E-14  1.3939E-13  9.7107E-15 -1.6225E-14  1.2742E-13  2.3581E-12
 -1.5851E-15  9.7107E-15  1.9527E-13 -5.8032E-14  8.9483E-15  1.9730E-13
 -1.2120E-15 -1.6225E-14 -5.8032E-14  2.6940E-14 -2.0155E-14 -3.3601E-13
  2.6614E-13  1.2742E-13  8.9483E-15 -2.0155E-14  5.0424E-13  3.0613E-12
  2.7403E-13  2.3581E-12  1.9730E-13 -3.3601E-13  3.0613E-12  4.8996E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.281277  -31.872174    0.849084    0.012654   -0.565867  2452814.102673
# Heliocentric elements and errors
Epoch:              2452810.5000  =  2003/06/20
Mean Anomaly:          124.65373 +/-     0.089
Argument of Peri:       24.50455 +/-     0.079
Long of Asc Node:      158.05054 +/-     0.001
Inclination:             6.76880 +/-     0.001
Eccentricity:         0.25611207 +/-    0.0003
Semi-Major Axis:     49.38780932 +/-    0.0074
Time of Perihelion: 2408913.9040 +/-      29.8
Perihelion:          36.73899526 +/-    0.0140
Aphelion:            62.03662337 +/-    0.0158
Period (y)              347.0866 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           49.07724117 +/-    0.0020
Ecliptic Y          -31.51161588 +/-    0.0013
Ecliptic Z            1.29170206 +/-    0.0001
Ecliptic XDOT         0.00139486 +/-    0.0000
Ecliptic YDOT         0.00146889 +/-    0.0000
Ecliptic ZDOT        -0.00022359 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   58.33717537 +/-    0.0018
Geocenter to KBO     57.76935879 +/-    0.0024
# Hcoef:  4.83

The following table shows the complete astrometric record for 03QX113. 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 (03QX113) followed by the observatory code and reference code for the source of the astrometry.

2003 06  23.60193  21 59 23.03   -10 55 18.4   23.0i 03QX113   568  Cq9889      
2003 08  31.32283  21 56 02.87   -11 13 37.5   22.8g 03QX113   568  Cq9889      
2003 08  31.35679  21 56 02.76   -11 13 38.2   22.7g 03QX113   568  Cq9889      
2003 08  31.38376  21 56 02.67   -11 13 38.6   22.8g 03QX113   568  Cq9889      
2003 09  04.43946  21 55 49.14   -11 14 55.7   22.5g 03QX113   568  Cq9889      
2004 08  12.39090  21 59 58.24   -10 57 40.3   22.6r 03QX113   568  Cq9889      
2004 08  12.42109  21 59 58.13   -10 57 40.9   22.7r 03QX113   568  Cq9889      
2004 08  12.45562  21 59 58.02   -10 57 41.5   22.3r 03QX113   568  Cq9889      
2004 08  14.41455  21 59 51.36   -10 58 18.9   22.5r 03QX113   568  Cq9889      
2005 07  08.57826  22 04 34.49   -10 37 49.1   21.3r 03QX113   568  Cq9889      
2005 07  08.61262  22 04 34.41   -10 37 49.6   21.3r 03QX113   568  Cq9889      
2005 07  09.53101  22 04 32.21   -10 38 01.5   21.2r 03QX113   568  Cq9889      
2006 08  06.30738  22 06 04.04   -10 35 08.6         03QX113   250  S~06Ad      
2006 08  06.36140  22 06 03.86   -10 35 09.6         03QX113   250  S~06Ad      
2006 08  06.36579  22 06 03.84   -10 35 09.7         03QX113   250  S~06Ad      
2006 08  06.37019  22 06 03.83   -10 35 09.8         03QX113   250  S~06Ad      
2006 09  24.12177  22 03 25.90   -10 50 27.0   22.4R 03QX113   688  Cs0973      
2006 09  24.21723  22 03 25.61   -10 50 29.2         03QX113   688  Cs0973      
2007 09  11.34789  22 06 56.11   -10 36 17.7   22.1r 03QX113   695  Cv8576      
2007 09  12.34858  22 06 52.92   -10 36 36.5   22.3r 03QX113   695  Cv8576      
2008 05  03.47882  22 13 27.43   -10 04 39.0         03QX113   695  Cz0403      
2008 05  05.47647  22 13 30.66   -10 04 21.0         03QX113   695  Cz0403      
2008 05  05.48001  22 13 30.64   -10 04 21.0         03QX113   695  Cz0403      

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     0.49       0.00     0.04
  2   0.1881  -3144.97     0.03     -22.69    -0.08
  3   0.1882  -3146.73     0.09     -22.80    -0.16
  4   0.1883  -3148.11     0.16     -22.72    -0.06
  5   0.1994  -3361.58    -0.14     -27.25    -0.04
  6   1.1384    438.00    -0.14    -311.74     0.12
  7   1.1385    436.27    -0.23    -311.75     0.12
  8   1.1385    434.55    -0.09    -311.75     0.13
  9   1.1439    329.59    -0.46    -313.08     0.16
 10   2.0424   4669.88    -0.03    -603.74    -0.29
 11   2.0425   4668.60    -0.01    -603.80    -0.36
 12   2.0450   4634.03    -0.21    -603.67    -0.15
 13   3.1203   5964.20     0.24    -913.70     0.30
 14   3.1205   5961.36     0.17    -913.71     0.32
 15   3.1205   5961.05     0.08    -913.70     0.34
 16   3.1205   5960.88     0.14    -913.74     0.30
 17   3.2540   3458.16     0.17    -963.06     0.06
 18   3.2543   3453.39    -0.30    -963.64    -0.40
 19   4.2183   6660.06     0.31   -1246.97    -0.01
 20   4.2211   6609.37     0.00   -1248.12     0.02
 21   4.8621  12747.27    -0.07   -1504.86    -0.01
 22   4.8676  12798.45     0.07   -1504.96    -0.23
 23   4.8676  12798.17    -0.29   -1504.85    -0.13

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.

03QX113    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        49.705    49.706    49.705
ecceobj         0.248     0.248     0.248
incobj          6.732     6.732     6.732
qmin           36.419    36.423    36.420
qmax           63.507    63.489    63.532
amean          49.652    49.652    49.652
amin           49.169    49.172    49.161
amax           50.206    50.216    50.211
emean           0.251     0.251     0.251
emin            0.239     0.239     0.238
emax            0.265     0.265     0.265
imean           5.889     5.885     5.890
imin            5.331     5.307     5.332
imax            6.632     6.632     6.632
excite_mean     0.271     0.271     0.271
fracstop        1.000     1.000     1.000
cjmean          3.079     3.079     3.079

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       176.4     176.6     176.3
kozaiamp        179.9     179.9     180.0