Orbit Fit and Astrometric record for 03QV90

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: 03QV90    
# Created Thu Dec  9 02:09:34 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     32 observations of     33
# Arc:  15.05y
# First observation: 2003/08/23
#  Last observation: 2018/09/09
# Chi-squared of fit:    80.27 DOF:     58 RMS:  0.28
# Min/Max residuals:    -0.49    0.75
# Exact a, adot, b, bdot, g, gdot:
  1.313306E-05  2.206147E-02 -1.416297E-06 -7.644169E-04  2.328675E-02 -9.957834E-04
# Covariance matrix:
  1.4345E-13 -3.1332E-14 -1.3136E-15  8.7363E-16  3.7362E-14 -7.8185E-14
 -3.1332E-14  2.5110E-14  8.9252E-16 -8.5791E-16  1.1240E-14  7.7552E-14
 -1.3136E-15  8.9252E-16  1.0515E-13 -8.9804E-15 -8.9272E-16  3.0521E-15
  8.7363E-16 -8.5791E-16 -8.9804E-15  1.3439E-15 -2.2058E-16 -2.8160E-15
  3.7362E-14  1.1240E-14 -8.9272E-16 -2.2058E-16  1.3821E-13  2.2124E-14
 -7.8185E-14  7.7552E-14  3.0521E-15 -2.8160E-15  2.2124E-14  2.5432E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.377909   -7.382677    0.396830   -0.022423   -0.934604  2452874.794103
# Heliocentric elements and errors
Epoch:              2452874.5000  =  2003/08/23
Mean Anomaly:          269.16975 +/-     0.056
Argument of Peri:      311.23641 +/-     0.047
Long of Asc Node:      138.11697 +/-     0.002
Inclination:             2.41171 +/-     0.000
Eccentricity:         0.05600012 +/-    0.0000
Semi-Major Axis:     43.70399317 +/-    0.0027
Time of Perihelion: 2479500.6332 +/-      17.9
Perihelion:          41.25656434 +/-    0.0027
Aphelion:            46.15142201 +/-    0.0030
Period (y)              288.9282 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.44795814 +/-    0.0007
Ecliptic Y           -6.02585835 +/-    0.0001
Ecliptic Z           -1.03271509 +/-    0.0000
Ecliptic XDOT         0.00020981 +/-    0.0000
Ecliptic YDOT         0.00258189 +/-    0.0000
Ecliptic ZDOT        -0.00008686 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.87602623 +/-    0.0007
Geocenter to KBO     42.94293556 +/-    0.0007
# Hcoef:  7.02

The following table shows the complete astrometric record for 03QV90. 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 (03QV90) followed by the observatory code and reference code for the source of the astrometry.

2003 08  23.29336  23 35 03.91   -04 11 43.9   22.0R 03QV90    807  Ci4137      
2003 08  24.30508  23 34 59.97   -04 12 10.4         03QV90    807  Ci4137      
2003 08  24.37682  23 34 59.71   -04 12 12.5         03QV90    807  Ci4137      
2003 10  22.15049  23 31 03.22   -04 37 44.3   23.2R 03QV90    695  Cj4699      
2003 10  22.23808  23 31 02.91   -04 37 46.1         03QV90    695  Cj4699      
2003 10  23.19439  23 30 59.81   -04 38 05.3   23.8R 03QV90    304  Ci9429      
2003 10  23.21442  23 30 59.75   -04 38 05.7         03QV90    304  Ci9429      
2004 07  17.37021  23 41 30.92   -03 31 47.8   21.9R 03QV90    807  Cl8405      
2004 07  17.42677  23 41 30.83   -03 31 48.8         03QV90    807  Cl8405      
2004 10  11.21449  23 36 22.07   -04 06 31.2   23.7R 03QV90    695  Cl8405      
2004 10  11.30502  23 36 21.77   -04 06 33.7         03QV90    695  Cl8405      
2004 10  12.18643  23 36 18.42   -04 06 55.2   23.2R 03QV90    695  Cl8405      
2004 10  12.29544  23 36 17.95   -04 06 57.2         03QV90    695  Cl8405      
2007 05  22.12184  23 54 45.32   -02 11 34.6   23.7R 03QV90    250  S~06Ac      
2007 05  22.12878  23 54 45.34   -02 11 34.5         03QV90    250  S~06Ac      
2007 05  22.13573  23 54 45.36   -02 11 34.4         03QV90    250  S~06Ac      
2007 05  22.14267  23 54 45.39   -02 11 34.2         03QV90    250  S~06Ac      
2013 10  05.30395  00 19 43.88   +00 10 49.8   23.2R 03QV90    695  C~0zdV      
2013 10  05.34959  00 19 43.71   +00 10 48.5         03QV90    695  C~0zdV      
2013 10  06.32125  00 19 39.71   +00 10 24.1         03QV90    695  C~0zdV      
2013 10  13.11349  00 19 10.858  +00 07 17.24  23.2i 03QV90    W84  C~4yD1      
2013 11  23.09831  00 16 56.580  -00 06 21.14  23.0i 03QV90    W84  C~4yD1      
2014 10  28.18680  00 23 00.795  +00 29 50.51  23.6r 03QV90    W84  C~4yD1      
2015 10  17.15966  00 28 34.447  +01 03 13.05  23.6r 03QV90    W84  C~4yD1      
2015 11  02.09796  00 27 32.436  +00 56 47.60  23.5r 03QV90    W84  C~4yD1      
2016 09  09.31225  00 36 02.084  +01 49 10.26  23.1r 03QV90    W84  C~4yD1      
2016 09  09.31362  00 36 02.058  +01 49 10.34  22.6i 03QV90    W84  C~4yD1      
2016 10  02.18440  00 34 25.694  +01 38 31.52  23.1i 03QV90    W84  C~4yD1      
2016 11  18.11310  00 31 28.251  +01 20 13.47  23.6r 03QV90    W84  C~4yD1      
2016 11  28.10122  00 31 05.151  +01 18 05.08  23.6r 03QV90    W84  C~4yD1      
2017 08  22.32458  00 41 56.556  +02 25 18.00  23.6i 03QV90    W84  C~4yD1      
2018 09  09.24289  00 45 46.938  +02 46 59.07  22.7z 03QV90    W84  C~4yD1      
2018 10  18.18780  00 43 01.850  +02 29 05.38  22.8z 03QV90    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     0.28       0.00     0.32
     2   0.0028      0.00    -0.10       0.00     0.31
     3   0.0030      0.00     0.25       0.00     0.09
     4   0.1639      0.00    -0.25       0.00    -0.08
     5   0.1641      0.00    -0.49       0.00    -0.11
     6   0.1667      0.00    -0.18       0.00    -0.33
     7   0.1668      0.00    -0.09       0.00    -0.34
     8   0.9010      0.00     0.15       0.00     0.48
     9   0.9011      0.00     0.32       0.00     0.24
    10   1.1360      0.00    -0.03       0.00     0.34
    11   1.1362      0.00     0.75       0.00     0.02
    12   1.1387      0.00     0.54       0.00    -0.39
    13   1.1390      0.00    -0.22       0.00     0.20
    14   3.7449      0.00    -0.41       0.00    -0.33
    15   3.7449      0.00    -0.43       0.00    -0.35
    16   3.7449      0.00    -0.45       0.00    -0.37
    17   3.7450      0.00    -0.32       0.00    -0.29
    18  10.1191      0.00    -0.13       0.00     0.35
    19  10.1193      0.00     0.30       0.00     0.32
    20  10.1219      0.00 (   2.74)      0.00 (   2.85)
    21  10.1405      0.00     0.28       0.00     0.09
    22  10.2527      0.00     0.09       0.00    -0.06
    23  11.1811      0.00     0.14       0.00     0.00
    24  12.1502      0.00     0.10       0.00    -0.12
    25  12.1939      0.00    -0.05       0.00     0.20
    26  13.0486      0.00     0.37       0.00     0.02
    27  13.0487      0.00     0.07       0.00     0.14
    28  13.1113      0.00     0.30       0.00    -0.29
    29  13.2398      0.00    -0.19       0.00     0.14
    30  13.2671      0.00    -0.30       0.00    -0.34
    31  13.9987      0.00    -0.10       0.00     0.05
    32  15.0471      0.00    -0.05       0.00     0.15
    33  15.1537      0.00    -0.27       0.00    -0.18

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.

03QV90    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.148    44.148    44.148
ecceobj         0.056     0.056     0.056
incobj          2.406     2.406     2.406
qmin           40.303    40.309    40.284
qmax           47.761    47.779    47.741
amean          43.918    43.918    43.918
amin           43.570    43.572    43.566
amax           44.285    44.283    44.283
emean           0.063     0.063     0.063
emin            0.046     0.046     0.046
emax            0.079     0.079     0.079
imean           1.972     1.972     1.972
imin            1.205     1.205     1.206
imax            2.660     2.659     2.660
excite_mean     0.072     0.072     0.072
fracstop        1.000     1.000     1.000
cjmean          3.094     3.094     3.094

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       186.5     186.6     186.6
kozaiamp        180.0     180.0     180.0