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 Fri Nov 16 02:08:11 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   19 observations of   20
# Arc:  10.12y
# First observation: 2003/08/23
#  Last observation: 2013/10/05
# Chi-squared of fit:    57.31 DOF:   32 RMS:  0.31
# Min/Max residuals:    -0.54    0.86
# Exact a, adot, b, bdot, g, gdot:
  1.395457E-05  2.206052E-02 -1.543926E-06 -7.643010E-04  2.328720E-02 -1.000218E-03
# Covariance matrix:
  3.1129E-13 -1.8800E-13 -6.6337E-15  6.0617E-15  1.9868E-13 -8.1093E-13
 -1.8800E-13  1.8376E-13  6.3376E-15 -6.3553E-15 -1.3223E-13  8.4340E-13
 -6.6337E-15  6.3376E-15  1.2653E-13 -1.9184E-14 -6.4823E-15  3.0412E-14
  6.0617E-15 -6.3553E-15 -1.9184E-14  8.3407E-15  4.6094E-15 -3.0517E-14
  1.9868E-13 -1.3223E-13 -6.4823E-15  4.6094E-15  3.2822E-13 -6.3249E-13
 -8.1093E-13  8.4340E-13  3.0412E-14 -3.0517E-14 -6.3249E-13  4.0496E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.377909   -7.382677    0.396829   -0.022423   -0.934604  2452874.794103
# Heliocentric elements and errors
Epoch:              2452874.5000  =  2003/08/23
Mean Anomaly:          269.06890 +/-     0.109
Argument of Peri:      311.36324 +/-     0.093
Long of Asc Node:      138.11397 +/-     0.003
Inclination:             2.41153 +/-     0.000
Eccentricity:         0.05621054 +/-    0.0001
Semi-Major Axis:     43.69773420 +/-    0.0051
Time of Perihelion: 2479524.4701 +/-      34.6
Perihelion:          41.24146079 +/-    0.0064
Aphelion:            46.15400761 +/-    0.0068
Period (y)              288.8661 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.44713994 +/-    0.0010
Ecliptic Y           -6.02571677 +/-    0.0002
Ecliptic Z           -1.03270061 +/-    0.0000
Ecliptic XDOT         0.00020927 +/-    0.0000
Ecliptic YDOT         0.00258180 +/-    0.0000
Ecliptic ZDOT        -0.00008683 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.87519635 +/-    0.0010
Geocenter to KBO     42.94210597 +/-    0.0011
# Hcoef:  6.99

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      

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     0.28
  2   0.0028      0.00    -0.26       0.00     0.27
  3   0.0030      0.00     0.09       0.00     0.05
  4   0.1639      0.00    -0.30       0.00    -0.08
  5   0.1641      0.00    -0.54       0.00    -0.11
  6   0.1667      0.00    -0.22       0.00    -0.33
  7   0.1668      0.00    -0.14       0.00    -0.33
  8   0.9010      0.00     0.09       0.00     0.46
  9   0.9011      0.00     0.27       0.00     0.22
 10   1.1360      0.00     0.09       0.00     0.39
 11   1.1362      0.00     0.86       0.00     0.07
 12   1.1387      0.00     0.66       0.00    -0.34
 13   1.1390      0.00    -0.10       0.00     0.25
 14   3.7449      0.00    -0.20       0.00    -0.30
 15   3.7449      0.00    -0.22       0.00    -0.32
 16   3.7449      0.00    -0.24       0.00    -0.34
 17   3.7450      0.00    -0.12       0.00    -0.27
 18  10.1191      0.00    -0.21       0.00     0.17
 19  10.1193      0.00     0.23       0.00     0.14
 20  10.1219      0.00 (   2.67)      0.00 (   2.67)

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        44.142    44.142    44.142
ecceobj         0.057     0.057     0.057
incobj          2.405     2.405     2.405
qmin           40.280    40.264    40.291
qmax           47.826    47.799    47.838
amean          43.912    43.912    43.912
amin           43.572    43.560    43.568
amax           44.292    44.285    44.293
emean           0.063     0.063     0.063
emin            0.047     0.047     0.047
emax            0.080     0.080     0.080
imean           1.975     1.975     1.975
imin            1.203     1.203     1.203
imax            2.664     2.664     2.664
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       186.4     186.4     186.6
kozaiamp        180.0     179.9     180.0