Orbit Fit and Astrometric record for 07RZ326

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: 07RZ326   
# Created Fri Dec 15 02:37:28 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   6.08y
# First observation: 2007/09/06
#  Last observation: 2013/10/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000659   0.028322  -0.000304   0.013640   0.026582   0.000000
# Chi-squared of fit:    48.05 DOF:   54 RMS:  0.22
# Min/Max residuals:    -0.84    0.49
# Exact a, adot, b, bdot, g, gdot:
  1.612925E-05  2.692991E-02  7.562293E-06  1.299654E-02  2.672808E-02 -6.668571E-03
# Covariance matrix:
  1.2641E-13 -8.7499E-14  1.4915E-14 -2.9841E-14  2.8747E-14 -3.6259E-13
 -8.7499E-14  1.8626E-13 -3.3189E-14  8.1857E-14  4.2594E-14  9.8399E-13
  1.4915E-14 -3.3189E-14  9.8060E-14 -3.2167E-14  3.6973E-15 -1.7671E-13
 -2.9841E-14  8.1857E-14 -3.2167E-14  4.4916E-14  3.1797E-14  4.5506E-13
  2.8747E-14  4.2594E-14  3.6973E-15  3.1797E-14  2.7738E-13  3.5939E-13
 -3.6259E-13  9.8399E-13 -1.7671E-13  4.5506E-13  3.5939E-13  5.4595E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   28.814578  -19.142463   -0.046732    0.485172   -0.881878  2454349.814074
# Heliocentric elements and errors
Epoch:              2454340.5000  =  2007/08/28
Mean Anomaly:          334.28397 +/-     0.007
Argument of Peri:      103.44107 +/-     0.014
Long of Asc Node:      296.32243 +/-     0.000
Inclination:            37.23450 +/-     0.000
Eccentricity:         0.34561599 +/-    0.0001
Semi-Major Axis:     52.67739984 +/-    0.0068
Time of Perihelion: 2464316.0398 +/-       2.1
Perihelion:          34.47124803 +/-    0.0063
Aphelion:            70.88355165 +/-    0.0101
Period (y)              382.3356 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.93416949 +/-    0.0006
Ecliptic Y          -11.03973457 +/-    0.0002
Ecliptic Z           18.03286837 +/-    0.0004
Ecliptic XDOT        -0.00026071 +/-    0.0000
Ecliptic YDOT         0.00301104 +/-    0.0000
Ecliptic ZDOT         0.00083712 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.29949428 +/-    0.0005
Geocenter to KBO     37.41383352 +/-    0.0007
# Hcoef:  8.42

The following table shows the complete astrometric record for 07RZ326. 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 (07RZ326) followed by the observatory code and reference code for the source of the astrometry.

2007 09  06.31332  22 04 44.49   +19 08 32.6   23.8r 07RZ326   568  C~1QdM      
2007 09  06.35487  22 04 44.26   +19 08 31.4   23.9r 07RZ326   568  C~1QdM      
2007 09  06.39758  22 04 44.04   +19 08 30.5   24.1r 07RZ326   568  C~1QdM      
2007 09  07.35629  22 04 38.99   +19 08 03.9         07RZ326   568  C~1QdM      
2007 09  18.30951  22 03 44.17   +19 02 22.9         07RZ326   675  C~1QdM      
2007 09  18.31364  22 03 44.15   +19 02 22.8         07RZ326   675  C~1QdM      
2007 09  18.37362  22 03 43.86   +19 02 20.6         07RZ326   675  C~1QdN      
2007 09  18.37915  22 03 43.85   +19 02 20.7   23.4R 07RZ326   675  C~1QdN      
2007 09  18.38656  22 03 43.81   +19 02 20.2   24.0R 07RZ326   675  C~1QdN      
2007 11  09.10712  22 01 15.67   +18 27 01.6   24.3r 07RZ326   695  C~1QdN      
2007 11  09.17249  22 01 15.63   +18 26 59.0   24.9r 07RZ326   695  C~1QdN      
2008 08  30.33744  22 10 07.08   +20 29 06.2   23.8r 07RZ326   568  C~1QdN      
2008 08  30.36819  22 10 06.90   +20 29 05.5   23.8r 07RZ326   568  C~1QdN      
2008 08  30.39918  22 10 06.74   +20 29 04.9   23.8r 07RZ326   568  C~1QdN      
2008 08  31.31971  22 10 01.73   +20 28 44.4         07RZ326   568  C~1QdN      
2008 10  22.11093  22 06 22.17   +19 56 43.6   24.8r 07RZ326   695  C~1QdN      
2008 10  22.19300  22 06 21.97   +19 56 40.0   24.4r 07RZ326   695  C~1QdN      
2009 06  21.41747  22 20 12.30   +21 33 54.6         07RZ326   695  C~1QdN      
2009 09  13.27762  22 13 52.00   +21 41 38.9         07RZ326   568  C~1QdN      
2009 09  15.30953  22 13 41.52   +21 40 34.1         07RZ326   568  C~1QdN      
2013 07  07.60017  22 41 00.26   +26 55 36.6         07RZ326   568  C~1QdN      
2013 07  11.55219  22 40 47.58   +26 58 04.9         07RZ326   568  C~1QdN      
2013 07  12.52057  22 40 44.22   +26 58 38.9         07RZ326   568  C~1QdN      
2013 07  16.52150  22 40 29.71   +27 00 50.2         07RZ326   568  C~1QdN      
2013 08  09.51807  22 38 38.02   +27 08 09.1         07RZ326   568  C~1QdN      
2013 08  13.48239  22 38 16.54   +27 08 21.9         07RZ326   568  C~1QdN      
2013 09  03.33244  22 36 16.97   +27 04 57.8         07RZ326   568  C~1QdN      
2013 09  06.28472  22 35 59.76   +27 03 53.5         07RZ326   568  C~1QdN      
2013 09  29.38764  22 33 53.58   +26 51 13.9         07RZ326   568  C~1QdN      
2013 10  05.36546  22 33 25.14   +26 46 56.3         07RZ326   568  C~1QdN      

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    -0.04       0.00     0.03
  2   0.0001     -3.47    -0.19       0.20    -0.00
  3   0.0002     -6.69     0.01       0.61     0.18
  4   0.0029    -82.92    -0.84       4.68     0.10
  5   0.0328   -931.54     0.03       1.59    -0.22
  6   0.0329   -931.84     0.04       1.61    -0.19
  7   0.0330   -936.49     0.01       1.23    -0.31
  8   0.0330   -936.58     0.34       1.38    -0.13
  9   0.0331   -937.30     0.19       1.15    -0.33
 10   0.1747  -3714.55     0.32   -1096.93     0.07
 11   0.1748  -3716.12     0.25   -1099.08     0.12
 12   0.9830   6091.04     0.15    2648.80     0.06
 13   0.9830   6088.44     0.00    2649.15     0.08
 14   0.9831   6086.13     0.18    2649.47     0.09
 15   0.9856   6013.25    -0.06    2658.08     0.14
 16   1.1274   2414.52    -0.18    2106.22     0.08
 17   1.1277   2410.50    -0.17    2104.03     0.15
 18   1.7908  15435.88     0.13    2995.38     0.29
 19   2.0204  10690.15    -0.19    5445.75    -0.26
 20   2.0260  10529.91     0.00    5442.09     0.24
 21   5.8351  38763.66     0.25   15095.18    -0.05
 22   5.8460  38651.91     0.11   15296.06    -0.13
 23   5.8486  38620.42    -0.48   15344.18    -0.00
 24   5.8596  38478.94     0.37   15537.05    -0.04
 25   5.9253  37188.19    -0.28   16471.82     0.21
 26   5.9361  36914.77     0.15   16582.99    -0.20
 27   5.9932  35295.59     0.49   16940.19    -0.20
 28   6.0013  35050.14    -0.22   16958.56     0.09
 29   6.0645  33146.57    -0.36   16821.91     0.06
 30   6.0809  32686.00     0.01   16709.81     0.06

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.

07RZ326    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        53.193    53.212    53.174
ecceobj         0.353     0.353     0.352
incobj         37.278    37.278    37.278
qmin           33.795    33.854    33.827
qmax           72.435    72.547    72.361
amean          52.732    52.742    52.708
amin           52.197    52.197    52.168
amax           53.413    53.453    53.372
emean           0.334     0.333     0.334
emin            0.309     0.308     0.310
emax            0.357     0.357     0.356
imean          39.164    39.189    39.160
imin           38.600    38.626    38.624
imax           39.824    39.819    39.806
excite_mean     0.714     0.714     0.714
fracstop        1.000     1.000     1.000
cjmean          2.504     2.504     2.504

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       175.6     175.3     177.7
kozaiamp        179.9     180.0     180.0