Orbit Fit and Astrometric record for 04QG29

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: 04QG29    
# Created Wed Oct 18 01:37:33 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:  10.17y
# First observation: 2004/08/19
#  Last observation: 2014/10/22
Preliminary a, adot, b, bdot, g, gdot:
   0.000287   0.026778   0.000082   0.013722   0.027317   0.000000
# Chi-squared of fit:     9.11 DOF:   22 RMS:  0.14
# Min/Max residuals:    -0.25    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.636831E-05  2.726107E-02  7.928054E-06  1.396551E-02  2.719317E-02  2.499401E-03
# Covariance matrix:
  2.6469E-13 -1.8609E-13  5.2469E-14 -9.7864E-14  1.7843E-13 -6.9723E-13
 -1.8609E-13  2.7922E-13 -8.2769E-14  1.5424E-13 -1.4605E-13  1.0905E-12
  5.2469E-14 -8.2769E-14  1.7087E-13 -6.6422E-14  5.1637E-14 -3.3601E-13
 -9.7864E-14  1.5424E-13 -6.6422E-14  9.7668E-14 -9.6725E-14  6.2627E-13
  1.7843E-13 -1.4605E-13  5.1637E-14 -9.6725E-14  5.6845E-13 -7.1337E-13
 -6.9723E-13  1.0905E-12 -3.3601E-13  6.2627E-13 -7.1337E-13  4.4354E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.348640  -40.973411   -0.135904   -0.006067   -1.006974  2453236.863303
# Heliocentric elements and errors
Epoch:              2453230.5000  =  2004/08/13
Mean Anomaly:           16.19574 +/-     0.008
Argument of Peri:      332.78861 +/-     0.012
Long of Asc Node:      319.89059 +/-     0.000
Inclination:            27.19337 +/-     0.000
Eccentricity:         0.23340142 +/-    0.0001
Semi-Major Axis:     48.30142320 +/-    0.0097
Time of Perihelion: 2447714.3446 +/-       2.3
Perihelion:          37.02780264 +/-    0.0102
Aphelion:            59.57504376 +/-    0.0139
Period (y)              335.6975 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.60999852 +/-    0.0008
Ecliptic Y          -24.66851356 +/-    0.0007
Ecliptic Z           -0.22344269 +/-    0.0000
Ecliptic XDOT         0.00199427 +/-    0.0000
Ecliptic YDOT         0.00189466 +/-    0.0000
Ecliptic ZDOT         0.00140462 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.77720878 +/-    0.0007
Geocenter to KBO     36.77393462 +/-    0.0010
# Hcoef:  8.22

The following table shows the complete astrometric record for 04QG29. 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 (04QG29) followed by the observatory code and reference code for the source of the astrometry.

2004 08  19.36256  21 26 15.46   -15 27 01.4   23.6g 04QG29    568  C~0X5Y      
2004 08  19.38878  21 26 15.32   -15 27 01.9   23.4g 04QG29    568  C~0X5Y      
2004 08  19.41977  21 26 15.14   -15 27 02.5   23.4g 04QG29    568  C~0X5Y      
2004 08  20.39594  21 26 09.92   -15 27 19.1   23.5g 04QG29    568  C~0X5Y      
2004 10  13.24660  21 22 31.59   -15 36 47.3   23.9i 04QG29    568  C~0X5Y      
2004 10  13.30584  21 22 31.44   -15 36 47.2   24.0i 04QG29    568  C~0X5Y      
2004 10  13.36620  21 22 31.33   -15 36 47.4   24.0i 04QG29    568  C~0X5Y      
2005 10  04.13711  21 27 57.51   -14 22 34.9   23.4R 04QG29    675  C~0X5Y      
2005 10  04.19211  21 27 57.34   -14 22 35.2         04QG29    675  C~0X5Y      
2006 07  20.44300  21 38 55.99   -12 48 44.2         04QG29    568  C~0X5Y      
2006 07  20.46941  21 38 55.85   -12 48 44.6   23.7r 04QG29    568  C~0X5Y      
2006 07  20.49586  21 38 55.73   -12 48 45.0   23.7r 04QG29    568  C~0X5Y      
2014 10  22.10350  22 09 30.85   -03 28 35.2   23.4R 04QG29    G37  C~1BxG      
2014 10  22.21181  22 09 30.59   -03 28 37.0         04QG29    G37  C~1BxG      

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     0.04
  2   0.0001     -2.08    -0.08       0.16    -0.02
  3   0.0002     -4.74    -0.25       0.40    -0.04
  4   0.0028    -81.62    -0.16       8.13    -0.08
  5   0.1503  -3258.16     0.27     444.33     0.11
  6   0.1504  -3260.19    -0.02     445.10     0.36
  7   0.1506  -3261.77     0.16     445.39     0.14
  8   1.1246   2613.74    -0.05    3211.03    -0.05
  9   1.1248   2611.30    -0.04    3211.52     0.03
 10   1.9167  13531.17     0.20    5492.77    -0.21
 11   1.9168  13529.09     0.02    5493.06    -0.16
 12   1.9169  13527.30     0.13    5493.25    -0.21
 13  10.1731  51746.17     0.04   28820.40     0.08
 14  10.1734  51741.58    -0.11   28819.94     0.03

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.

04QG29    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.606    48.636    48.577
ecceobj         0.237     0.237     0.236
incobj         27.118    27.118    27.118
qmin           35.921    35.889    35.883
qmax           61.846    62.007    61.942
amean          48.611    48.632    48.588
amin           48.166    48.191    48.149
amax           49.149    49.184    49.147
emean           0.242     0.242     0.241
emin            0.224     0.225     0.224
emax            0.260     0.261     0.260
imean          28.320    28.315    28.324
imin           27.819    27.831    27.831
imax           28.815    28.810    28.809
excite_mean     0.532     0.533     0.532
fracstop        1.000     1.000     1.000
cjmean          2.790     2.790     2.790

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       182.0     181.5     182.7
kozaiamp        179.9     180.0     180.0