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 Thu Dec  9 02:09:37 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     44 observations of     44
# Arc:  14.07y
# First observation: 2003/08/23
#  Last observation: 2017/09/18
# Chi-squared of fit:   136.69 DOF:     82 RMS:  0.31
# Min/Max residuals:    -0.94    0.86
# Exact a, adot, b, bdot, g, gdot:
  1.694480E-05  2.582685E-02  2.263684E-06  1.256568E-03  2.601709E-02 -1.479026E-03
# Covariance matrix:
  1.5170E-13 -4.6759E-14  3.3421E-15 -1.9792E-15 -1.2350E-14 -1.0339E-13
 -4.6759E-14  3.3845E-14 -2.9196E-15  1.5965E-15  4.3337E-14  8.3485E-14
  3.3421E-15 -2.9196E-15  8.8938E-14 -8.1894E-15 -4.1207E-15 -7.4195E-15
 -1.9792E-15  1.5965E-15 -8.1894E-15  1.2044E-15  1.9103E-15  4.0977E-15
 -1.2350E-14  4.3337E-14 -4.1207E-15  1.9103E-15  1.4538E-13  1.0014E-13
 -1.0339E-13  8.3485E-14 -7.4195E-15  4.0977E-15  1.0014E-13  2.1426E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.771759   -0.579692    0.504245   -0.073274   -0.878522  2452874.829303
# Heliocentric elements and errors
Epoch:              2452874.5000  =  2003/08/23
Mean Anomaly:          260.75757 +/-     0.035
Argument of Peri:       47.74668 +/-     0.029
Long of Asc Node:       58.25858 +/-     0.001
Inclination:             5.40590 +/-     0.000
Eccentricity:         0.07370075 +/-    0.0000
Semi-Major Axis:     38.65736331 +/-    0.0019
Time of Perihelion: 2477075.9649 +/-       9.7
Perihelion:          35.80828678 +/-    0.0019
Aphelion:            41.50643984 +/-    0.0022
Period (y)              240.3569 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.17471709 +/-    0.0006
Ecliptic Y           -0.89638233 +/-    0.0000
Ecliptic Z           -3.19731997 +/-    0.0000
Ecliptic XDOT        -0.00012187 +/-    0.0000
Ecliptic YDOT         0.00271344 +/-    0.0000
Ecliptic ZDOT         0.00014489 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.31524143 +/-    0.0006
Geocenter to KBO     38.43633392 +/-    0.0006
# Hcoef:  7.65

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      
2013 11  08.17829  00 53 43.379  +01 32 36.94  23.1r 03QQ91    W84  C~4yD1      
2013 11  08.19267  00 53 43.312  +01 32 36.85  23.0i 03QQ91    W84  C~4yD1      
2013 11  23.15191  00 52 49.721  +01 28 22.79  23.3i 03QQ91    W84  C~4yD1      
2014 11  14.05174  00 58 50.815  +02 11 59.93  24.5g 03QQ91    W84  C~4yD1      
2014 11  14.07483  00 58 50.711  +02 11 59.29  23.9r 03QQ91    W84  C~4yD1      
2014 11  14.07621  00 58 50.714  +02 11 59.36  23.0i 03QQ91    W84  C~4yD1      
2014 11  16.10196  00 58 43.085  +02 11 22.46  23.5r 03QQ91    W84  C~4yD1      
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      
2015 11  07.12015  01 04 51.060  +02 55 45.13  23.7r 03QQ91    W84  C~4yD1      
2016 08  26.33375  01 15 45.972  +04 09 37.41  23.5r 03QQ91    W84  C~4yD1      
2016 08  26.33512  01 15 45.959  +04 09 37.59  23.3i 03QQ91    W84  C~4yD1      
2016 10  29.19312  01 11 01.262  +03 40 26.60  23.4i 03QQ91    W84  C~4yD1      
2016 10  29.19449  01 11 01.256  +03 40 26.42  23.5r 03QQ91    W84  C~4yD1      
2016 11  06.17239  01 10 24.814  +03 37 12.26  23.8r 03QQ91    W84  C~4yD1      
2016 11  06.17378  01 10 24.804  +03 37 12.06  23.5i 03QQ91    W84  C~4yD1      
2016 11  06.17516  01 10 24.800  +03 37 12.19  24.1g 03QQ91    W84  C~4yD1      
2017 08  27.37623  01 21 17.555  +04 50 26.80  24.8g 03QQ91    W84  C~4yD1      
2017 08  28.36829  01 21 14.511  +04 50 05.50  23.1i 03QQ91    W84  C~4yD1      
2017 09  18.27755  01 19 55.420  +04 41 22.67  24.7g 03QQ91    W84  C~4yD1      

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    -0.11       0.00    -0.39
     2   0.0027      0.00    -0.10       0.00     0.10
     3   0.0029      0.00    -0.46       0.00     0.21
     4   0.1667      0.00     0.23       0.00     0.52
     5   0.1668      0.00     0.17       0.00     0.12
     6   0.9747      0.00    -0.13       0.00    -0.31
     7   0.9749      0.00    -0.02       0.00    -0.19
     8   1.9627      0.00    -0.46       0.00     0.57
     9   1.9654      0.00     0.10       0.00     0.03
    10   1.9657      0.00    -0.20       0.00     0.18
    11   2.1820      0.00     0.36       0.00     0.08
    12   2.1822      0.00    -0.07       0.00     0.14
    13   2.1954      0.00    -0.03       0.00     0.21
    14   2.1956      0.00     0.12       0.00     0.23
    15   2.1983      0.00    -0.45       0.00     0.15
    16   2.9513      0.00     0.56       0.00     0.11
    17   2.9515      0.00     0.54       0.00     0.08
    18   2.9515      0.00     0.55       0.00     0.07
    19   2.9515      0.00     0.56       0.00     0.06
    20   3.0775      0.00    -0.60       0.00     0.10
    21   3.0776      0.00    -0.94       0.00    -0.32
    22   5.1881      0.00     0.65       0.00    -0.64
    23   5.1881      0.00     0.70       0.00    -0.62
    24   5.1881      0.00     0.86       0.00    -0.57
    25  10.2118      0.00    -0.16       0.00    -0.34
    26  10.2118      0.00    -0.28       0.00    -0.13
    27  10.2528      0.00    -0.08       0.00    -0.10
    28  11.2272      0.00     0.06       0.00     0.13
    29  11.2272      0.00    -0.15       0.00    -0.08
    30  11.2272      0.00    -0.03       0.00     0.02
    31  11.2328      0.00    -0.15       0.00    -0.01
    32  12.1340      0.00    -0.33       0.00     0.01
    33  12.1341      0.00     0.40       0.00     0.44
    34  12.2075      0.00     0.01       0.00     0.00
    35  13.0103      0.00     0.07       0.00    -0.16
    36  13.0103      0.00    -0.06       0.00     0.05
    37  13.1851      0.00    -0.11       0.00     0.06
    38  13.1851      0.00    -0.10       0.00    -0.08
    39  13.2070      0.00    -0.02       0.00     0.15
    40  13.2070      0.00    -0.08       0.00    -0.02
    41  13.2070      0.00    -0.04       0.00     0.15
    42  14.0125      0.00     0.24       0.00     0.07
    43  14.0152      0.00     0.14       0.00     0.12
    44  14.0724      0.00    -0.08       0.00     0.20

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        39.024    39.024    39.025
ecceobj         0.072     0.072     0.072
incobj          5.398     5.398     5.398
qmin           35.192    35.194    35.271
qmax           42.614    42.637    42.498
amean          38.779    38.782    38.781
amin           38.475    38.480    38.481
amax           39.115    39.129    39.101
emean           0.062     0.058     0.057
emin            0.028     0.030     0.026
emax            0.091     0.091     0.088
imean           7.080     7.059     7.031
imin            4.476     4.476     4.476
imax            8.825     8.853     8.849
excite_mean     0.139     0.137     0.136
fracstop        1.000     1.000     1.000
cjmean          3.025     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       178.4     180.3     180.9
kozaiamp        179.9     180.0     180.0