Orbit Fit and Astrometric record for 03QQ91

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: 03QQ91    
# Created Fri Dec 15 02:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc:  12.13y
# First observation: 2003/08/23
#  Last observation: 2015/10/11
Preliminary a, adot, b, bdot, g, gdot:
  -0.002256   0.027183  -0.000111   0.001316   0.026505   0.000000
# Chi-squared of fit:   120.22 DOF:   46 RMS:  0.38
# Min/Max residuals:    -1.13    0.70
# Exact a, adot, b, bdot, g, gdot:
  1.645185E-05  2.582725E-02  2.405243E-06  1.256506E-03  2.601707E-02 -1.477980E-03
# Covariance matrix:
  2.1765E-13 -8.2236E-14  4.8393E-15 -3.4215E-15  2.4807E-14 -2.1713E-13
 -8.2236E-14  5.5858E-14 -3.8885E-15  2.5294E-15  3.1998E-14  1.5858E-13
  4.8393E-15 -3.8885E-15  1.0808E-13 -1.7225E-14 -2.9959E-15 -1.2164E-14
 -3.4215E-15  2.5294E-15 -1.7225E-14  5.6722E-15  1.2338E-15  8.0378E-15
  2.4807E-14  3.1998E-14 -2.9959E-15  1.2338E-15  1.9353E-13  7.0511E-14
 -2.1713E-13  1.5858E-13 -1.2164E-14  8.0378E-15  7.0511E-14  5.0512E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.771759   -0.579692    0.504245   -0.073274   -0.878523  2452874.829303
# Heliocentric elements and errors
Epoch:              2452870.5000  =  2003/08/19
Mean Anomaly:          260.75316 +/-     0.043
Argument of Peri:       47.72841 +/-     0.035
Long of Asc Node:       58.26024 +/-     0.001
Inclination:             5.40580 +/-     0.000
Eccentricity:         0.07365455 +/-    0.0000
Semi-Major Axis:     38.65848664 +/-    0.0024
Time of Perihelion: 2477074.0950 +/-      10.3
Perihelion:          35.81111320 +/-    0.0025
Aphelion:            41.50586009 +/-    0.0028
Period (y)              240.3673 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.17475440 +/-    0.0006
Ecliptic Y           -0.89640166 +/-    0.0000
Ecliptic Z           -3.19731764 +/-    0.0001
Ecliptic XDOT        -0.00012176 +/-    0.0000
Ecliptic YDOT         0.00271348 +/-    0.0000
Ecliptic ZDOT         0.00014488 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.31523570 +/-    0.0006
Geocenter to KBO     38.43630479 +/-    0.0006
# Hcoef:  7.38

The following table shows the complete astrometric record for 03QQ91. 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 (03QQ91) followed by the observatory code and reference code for the source of the astrometry.

2003 08  23.32856  00 05 28.91   -04 36 27.7   22.1R 03QQ91    807  Ci4137      
2003 08  24.32825  00 05 24.96   -04 36 56.1         03QQ91    807  Ci4137      
2003 08  24.40127  00 05 24.64   -04 36 58.1         03QQ91    807  Ci4137      
2003 10  23.22866  00 00 53.68   -05 05 18.1         03QQ91    304  Ci9429      
2003 10  23.26653  00 00 53.52   -05 05 19.3         03QQ91    304  Ci9429      
2004 08  13.33315  00 11 21.35   -03 52 50.0   22.6R 03QQ91    807  Cp0703      
2004 08  13.40335  00 11 21.12   -03 52 51.7         03QQ91    807  Cp0703      
2005 08  09.19055  00 16 53.74   -03 11 25.0   21.9R 03QQ91    807  Cp0703      
2005 08  10.17399  00 16 50.89   -03 11 49.0         03QQ91    807  Cp0703      
2005 08  10.30863  00 16 50.46   -03 11 52.1         03QQ91    807  Cp0703      
2005 10  28.31419  00 11 10.03   -03 48 29.4   23.7R 03QQ91    568  Cp2048      
2005 10  28.36677  00 11 09.79   -03 48 30.4         03QQ91    568  Cp2048      
2005 11  02.18171  00 10 51.54   -03 50 01.5   23.3R 03QQ91    695  Cp0703      
2005 11  02.26216  00 10 51.25   -03 50 02.9         03QQ91    695  Cp0703      
2005 11  03.27281  00 10 47.56   -03 50 20.6         03QQ91    695  Cp0703      
2006 08  05.30795  00 22 23.95   -02 30 05.9   23.2R 03QQ91    250  S~06Ad      
2006 08  05.36755  00 22 23.80   -02 30 07.2         03QQ91    250  S~06Ad      
2006 08  05.37195  00 22 23.79   -02 30 07.3         03QQ91    250  S~06Ad      
2006 08  05.37635  00 22 23.78   -02 30 07.4         03QQ91    250  S~06Ad      
2006 09  20.39033  00 19 25.80   -02 51 28.2   23.9R 03QQ91    568  Cv2406      
2006 09  20.43512  00 19 25.56   -02 51 30.0   23.9R 03QQ91    568  Cv2406      
2008 10  30.274487 00 27 05.81   -01 49 02.7   22.9V 03QQ91    645  C~2Jx8      
2008 10  30.275317 00 27 05.81   -01 49 02.7   22.8V 03QQ91    645  C~2Jx8      
2008 10  30.277804 00 27 05.81   -01 49 02.7   23.7V 03QQ91    645  C~2Jx8      
2015 10  11.26360  01 06 58.27   +03 07 35.6         03QQ91    695  C~1hTZ      
2015 10  11.30903  01 06 58.09   +03 07 34.7         03QQ91    695  C~1hTZ      

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    -0.16       0.00    -0.34
  2   0.0027    -65.49     0.05      -2.47     0.10
  3   0.0029    -70.67    -0.24      -2.40     0.35
  4   0.1667  -4463.20     0.50      51.18     0.36
  5   0.1668  -4465.87     0.28      51.03     0.02
  6   0.9747   5880.59    -0.22     290.79    -0.24
  7   0.9749   5876.75    -0.08     290.61    -0.18
  8   1.9627  11446.09    -0.24     569.27     0.70
  9   1.9654  11397.21     0.05     564.45    -0.01
 10   1.9657  11390.04    -0.16     564.20     0.24
 11   2.1820   5829.77     0.27     597.57    -0.07
 12   2.1822   5826.08    -0.10     598.09     0.16
 13   2.1954   5539.10    -0.03     624.06     0.20
 14   2.1956   5534.56     0.11     624.52     0.16
 15   2.1983   5476.83    -0.44     630.43     0.31
 16   2.9513  16999.25     0.45     847.54    -0.12
 17   2.9515  16996.65     0.42     847.25    -0.14
 18   2.9515  16996.48     0.43     847.22    -0.15
 19   2.9515  16996.30     0.44     847.19    -0.16
 20   3.0775  14022.70    -0.64     748.89     0.35
 21   3.0776  14018.67    -1.13     748.69     0.10
 22   5.1881  21902.53     0.09    1399.85    -0.80
 23   5.1881  21902.53     0.14    1399.85    -0.81
 24   5.1881  21902.53     0.31    1399.85    -0.82
 25  12.1340  63753.01    -0.50    3269.39     0.33
 26  12.1341  63749.91     0.41    3269.65     0.43

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.

03QQ91    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        39.025    39.032    39.018
ecceobj         0.072     0.071     0.072
incobj          5.398     5.398     5.398
qmin           34.722    35.300    35.310
qmax           43.101    42.492    42.480
amean          38.779    38.779    38.769
amin           38.472    38.473    38.476
amax           39.128    39.118    39.111
emean           0.070     0.058     0.054
emin            0.029     0.023     0.023
emax            0.102     0.088     0.087
imean           7.177     7.066     6.970
imin            4.477     4.472     4.478
imax            8.975     8.883     8.828
excite_mean     0.144     0.137     0.134
fracstop        1.000     1.000     1.000
cjmean          3.023     3.025     3.026

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       177.7     178.6     181.4
kozaiamp        180.0     180.0     180.0