Orbit Fit and Astrometric record for 07RX326

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: 07RX326   
# Created Mon Jul 16 01:37:38 2018
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   24
# Arc:  10.29y
# First observation: 2007/09/06
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000087   0.027038   0.000010   0.002995   0.025469   0.000000
# Chi-squared of fit:    33.17 DOF:   38 RMS:  0.22
# Min/Max residuals:    -0.47    0.50
# Exact a, adot, b, bdot, g, gdot:
  1.648812E-05  2.772256E-02  2.042205E-06  3.045871E-03  2.602328E-02  1.600182E-03
# Covariance matrix:
  1.6374E-13 -1.7434E-13  8.8878E-15 -1.0080E-14  1.3673E-14 -6.2501E-13
 -1.7434E-13  3.5342E-13 -2.2942E-14  2.0428E-14 -5.7193E-14  1.3444E-12
  8.8878E-15 -2.2942E-14  9.1574E-14 -1.3062E-14  2.6670E-14 -9.9047E-14
 -1.0080E-14  2.0428E-14 -1.3062E-14  9.9376E-15  2.7094E-15  7.7058E-14
  1.3673E-14 -5.7193E-14  2.6670E-14  2.7094E-15  1.7012E-13 -2.9055E-13
 -6.2501E-13  1.3444E-12 -9.9047E-14  7.7058E-14 -2.9055E-13  5.2688E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   24.899507  -20.603490   -0.072293    0.423190   -0.911575  2454349.808964
# Heliocentric elements and errors
Epoch:              2454340.5000  =  2007/08/28
Mean Anomaly:           18.23383 +/-     0.015
Argument of Peri:       51.18936 +/-     0.022
Long of Asc Node:      264.31594 +/-     0.000
Inclination:            25.01663 +/-     0.000
Eccentricity:         0.16027305 +/-    0.0001
Semi-Major Axis:     46.22827653 +/-    0.0055
Time of Perihelion: 2448525.6907 +/-       4.8
Perihelion:          38.81912985 +/-    0.0068
Aphelion:            53.63742322 +/-    0.0081
Period (y)              314.3184 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.59130679 +/-    0.0005
Ecliptic Y          -12.55572489 +/-    0.0002
Ecliptic Z           16.17899896 +/-    0.0003
Ecliptic XDOT         0.00104930 +/-    0.0000
Ecliptic YDOT         0.00272219 +/-    0.0000
Ecliptic ZDOT         0.00036144 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.34186227 +/-    0.0005
Geocenter to KBO     38.42713465 +/-    0.0006
# Hcoef:  7.64

The following table shows the complete astrometric record for 07RX326. 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 (07RX326) followed by the observatory code and reference code for the source of the astrometry.

2007 09  06.30821  22 06 08.27   +15 01 46.9   23.0r 07RX326   568  C~1Q3a      
2007 09  06.34967  22 06 08.07   +15 01 45.5         07RX326   568  C~1Q3a      
2007 09  06.39240  22 06 07.85   +15 01 44.2   23.6r 07RX326   568  C~1Q3a      
2007 09  07.30971  22 06 03.49   +15 01 16.0         07RX326   568  C~1Q3a      
2007 09  07.35120  22 06 03.29   +15 01 14.5         07RX326   568  C~1Q3a      
2007 09  18.29721  22 05 13.24   +14 55 03.4   23.3R 07RX326   675  C~1Q3a      
2007 09  18.35665  22 05 13.00   +14 55 01.4         07RX326   675  C~1Q3a      
2007 11  09.08175  22 03 01.20   +14 19 57.8   23.4r 07RX326   695  C~1Q3a      
2007 11  09.16439  22 03 01.19   +14 19 54.7   23.9r 07RX326   695  C~1Q3a      
2008 05  03.45034  22 16 34.86   +15 14 02.2         07RX326   695  C~1Q3a      
2008 05  04.47087  22 16 37.71   +15 14 56.5         07RX326   695  C~1Q3a      
2008 06  08.31454  22 17 16.52   +15 42 01.0         07RX326   807  C~1Q3a      
2008 06  09.36170  22 17 15.87   +15 42 40.6         07RX326   807  C~1Q3a      
2008 08  30.31000  22 12 27.26   +15 50 44.0         07RX326   568  C~1Q3b      
2008 08  30.37168  22 12 26.96   +15 50 41.9         07RX326   568  C~1Q3b      
2008 08  31.29246  22 12 22.44   +15 50 17.2         07RX326   568  C~1Q3b      
2008 10  22.08354  22 09 04.79   +15 17 31.9   23.5r 07RX326   695  C~1Q3b      
2008 10  22.13806  22 09 04.66   +15 17 29.7   23.4r 07RX326   695  C~1Q3b      
2008 10  22.22914  22 09 04.47   +15 17 25.8   23.4r 07RX326   695  C~1Q3b      
2009 06  20.42598  22 22 48.51   +16 32 50.4         07RX326   695  C~1Q3b      
2009 06  21.39259  22 22 47.00   +16 33 20.0         07RX326   695  C~1Q3b      
2009 06  22.35922  22 22 45.42   +16 33 49.1         07RX326   695  C~1Q3b      
2017 12  20.09489  23 01 19.159  +20 58 20.29  23.6R 07RX326   G37  C~2UvC      
2017 12  20.17221  23 01 19.349  +20 58 18.43        07RX326   G37  C~2UvC      

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     0.07       0.00    -0.04
  2   0.0001     -3.21     0.04      -0.17    -0.18
  3   0.0002     -6.66    -0.12      -0.15    -0.11
  4   0.0027    -75.81    -0.03      -1.81    -0.09
  5   0.0029    -79.06    -0.10      -2.08    -0.30
  6   0.0328   -891.38    -0.08     -64.42    -0.32
  7   0.0330   -895.36     0.29     -64.92    -0.29
  8   0.1746  -3474.47     0.13   -1262.77     0.02
  9   0.1748  -3475.81     0.39   -1265.57    -0.04
 10   0.6575   8677.25     0.09   -2769.74    -0.03
 11   0.6603   8735.93    -0.01   -2734.82     0.13
 12   0.7557   9865.93    -0.10   -1436.89     0.27
 13   0.7585   9872.03    -0.23   -1396.60     0.50
 14   0.9829   6188.07 (  -0.24)    620.19 (   0.98)
 15   0.9831   6183.26    -0.32     619.88     0.48
 16   0.9856   6113.48    -0.47     621.73     0.22
 17   1.1274   2722.75    -0.04    -108.76    -0.12
 18   1.1275   2720.17    -0.17    -110.07     0.07
 19   1.1278   2716.14    -0.12    -112.62     0.04
 20   1.7881  15460.35 (   0.84)   -375.16 (   0.01)
 21   1.7908  15450.97     0.47    -339.55    -0.05
 22   1.7934  15440.47     0.35    -304.04    -0.03
 23  10.2883  52822.64    -0.09    3435.75    -0.12
 24  10.2885  52824.70     0.07    3433.07     0.01

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.

07RX326    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.368    46.384    46.351
ecceobj         0.162     0.162     0.161
incobj         25.048    25.048    25.048
qmin           38.057    38.020    38.046
qmax           54.700    54.712    54.618
amean          46.188    46.194    46.168
amin           45.804    45.809    45.782
amax           46.630    46.643    46.619
emean           0.159     0.158     0.158
emin            0.145     0.144     0.143
emax            0.173     0.174     0.173
imean          26.533    26.540    26.541
imin           26.165    26.169    26.165
imax           26.831    26.862    26.854
excite_mean     0.474     0.474     0.474
fracstop        1.000     1.000     1.000
cjmean          2.839     2.839     2.839

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       170.7     169.7     169.9
kozaiamp        180.0     180.0     179.9