Orbit Fit and Astrometric record for 07RY326

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: 07RY326   
# Created Tue Oct 24 01:37:43 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   32
# Arc:   6.07y
# First observation: 2007/09/06
#  Last observation: 2013/10/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000696   0.028168   0.000071  -0.003613   0.026447   0.000000
# Chi-squared of fit:    50.22 DOF:   56 RMS:  0.22
# Min/Max residuals:    -0.53    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.721898E-05  2.756728E-02 -1.530314E-06 -3.559523E-03  2.699830E-02 -1.871381E-03
# Covariance matrix:
  2.1216E-13 -1.6816E-13 -1.2517E-14  1.8722E-14 -9.5375E-15 -7.4967E-13
 -1.6816E-13  2.0185E-13  1.6215E-14 -2.4759E-14  9.2558E-15  9.9173E-13
 -1.2517E-14  1.6215E-14  1.0602E-13 -2.5329E-14  2.0268E-14  9.1607E-14
  1.8722E-14 -2.4759E-14 -2.5329E-14  1.2758E-14 -3.4807E-15 -1.2862E-13
 -9.5375E-15  9.2558E-15  2.0268E-14 -3.4807E-15  1.8016E-13  1.2140E-13
 -7.4967E-13  9.9173E-13  9.1607E-14 -1.2862E-13  1.2140E-13  5.1445E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   25.080386  -20.332082   -0.067531    0.426206   -0.910534  2454349.808964
# Heliocentric elements and errors
Epoch:              2454340.5000  =  2007/08/28
Mean Anomaly:          294.79557 +/-     0.047
Argument of Peri:      178.33536 +/-     0.059
Long of Asc Node:      232.12707 +/-     0.000
Inclination:            25.49282 +/-     0.000
Eccentricity:         0.06651422 +/-    0.0001
Semi-Major Axis:     38.89208911 +/-    0.0027
Time of Perihelion: 2470386.4321 +/-      11.5
Perihelion:          36.30521198 +/-    0.0038
Aphelion:            41.47896625 +/-    0.0040
Period (y)              242.5493 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.42243217 +/-    0.0005
Ecliptic Y          -11.94651855 +/-    0.0002
Ecliptic Z           15.70057195 +/-    0.0002
Ecliptic XDOT         0.00095995 +/-    0.0000
Ecliptic YDOT         0.00262630 +/-    0.0000
Ecliptic ZDOT        -0.00040747 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.95314707 +/-    0.0004
Geocenter to KBO     37.03936917 +/-    0.0006
# Hcoef:  7.80

The following table shows the complete astrometric record for 07RY326. 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 (07RY326) followed by the observatory code and reference code for the source of the astrometry.

2007 09  06.30821  22 06 47.33   +15 17 29.5   23.4r 07RY326   568  C~1Q3b      
2007 09  06.34967  22 06 47.12   +15 17 28.0   23.0r 07RY326   568  C~1Q3b      
2007 09  06.39240  22 06 46.90   +15 17 26.5   23.2r 07RY326   568  C~1Q3b      
2007 09  07.30971  22 06 42.48   +15 16 54.4         07RY326   568  C~1Q3b      
2007 09  07.35120  22 06 42.25   +15 16 52.6         07RY326   568  C~1Q3b      
2007 09  18.28930  22 05 50.86   +15 09 46.3         07RY326   675  C~1Q3b      
2007 09  18.35062  22 05 50.60   +15 09 43.8   23.1R 07RY326   675  C~1Q3b      
2008 08  30.31000  22 13 42.60   +15 45 57.3   23.1r 07RY326   568  C~1Q3b      
2008 08  30.34093  22 13 42.44   +15 45 56.3   23.3r 07RY326   568  C~1Q3b      
2008 08  30.37168  22 13 42.29   +15 45 55.3   23.5r 07RY326   568  C~1Q3b      
2008 08  31.29246  22 13 37.66   +15 45 26.5         07RY326   568  C~1Q3b      
2008 10  22.09351  22 10 14.14   +15 08 14.9   24.0r 07RY326   695  C~1Q3b      
2008 10  22.16564  22 10 13.97   +15 08 11.2   24.2r 07RY326   695  C~1Q3b      
2008 12  21.12701  22 11 10.77   +14 31 51.0         07RY326   695  C~1Q3b      
2008 12  22.09216  22 11 14.63   +14 31 33.9         07RY326   695  C~1Q3b      
2009 06  20.38697  22 24 45.67   +16 11 41.2         07RY326   695  C~1Q3b      
2009 06  20.43475  22 24 45.60   +16 11 42.2         07RY326   695  C~1Q3b      
2009 06  21.38489  22 24 44.15   +16 12 08.8         07RY326   695  C~1Q3b      
2009 07  24.37520  22 23 08.02   +16 20 02.2         07RY326   675  C~1Q3b      
2009 07  25.36454  22 23 03.95   +16 20 01.9         07RY326   675  C~1Q3b      
2009 07  25.44550  22 23 03.61   +16 20 01.8         07RY326   675  C~1Q3b      
2009 09  13.28594  22 19 01.78   +16 02 27.8         07RY326   568  C~1Q3b      
2009 09  15.30538  22 18 52.14   +16 01 08.3         07RY326   568  C~1Q3b      
2009 09  16.24435  22 18 47.73   +16 00 30.7         07RY326   568  C~1Q3b      
2013 07  08.54488  22 50 06.25   +17 46 48.1         07RY326   568  C~1Q3b      
2013 07  13.56887  22 49 52.92   +17 48 04.7         07RY326   568  C~1Q3b      
2013 07  16.53328  22 49 44.12   +17 48 40.1         07RY326   568  C~1Q3b      
2013 08  09.57929  22 48 10.18   +17 48 42.9         07RY326   568  C~1Q3b      
2013 08  13.49714  22 47 51.91   +17 47 55.0         07RY326   568  C~1Q3b      
2013 08  17.60928  22 47 32.12   +17 46 51.0         07RY326   568  C~1Q3b      
2013 09  06.30071  22 45 52.56   +17 38 37.3         07RY326   568  C~1Q3b      
2013 10  02.36635  22 43 47.33   +17 21 18.6         07RY326   568  C~1Q3b      

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    -0.22       0.00    -0.11
  2   0.0001     -3.38    -0.27      -0.21    -0.14
  3   0.0002     -6.90    -0.35      -0.36    -0.09
  4   0.0027    -78.29 (   0.75)     -5.23 (   0.11)
  5   0.0029    -82.06     0.31      -5.60    -0.05
  6   0.0328   -932.91     0.02    -110.62    -0.48
  7   0.0330   -937.35     0.29    -111.47    -0.53
  8   0.9829   6200.00     0.04    -721.08     0.47
  9   0.9830   6197.48     0.00    -721.13     0.43
 10   0.9831   6195.09     0.09    -721.24     0.33
 11   0.9856   6122.26     0.30    -722.53     0.19
 12   1.1274   2549.59    -0.07   -1664.05    -0.03
 13   1.1276   2545.90    -0.32   -1666.52    -0.19
 14   1.2918   2472.91     0.29   -3996.58     0.18
 15   1.2944   2518.19    -0.12   -4033.82    -0.42
 16   1.7880  15676.27     0.25   -2862.11     0.42
 17   1.7882  15675.69     0.15   -2860.81     0.06
 18   1.7908  15665.95    -0.35   -2828.30     0.20
 19   1.8811  14546.47    -0.25   -1875.79     0.02
 20   1.8838  14491.62    -0.12   -1854.39    -0.13
 21   1.8840  14487.01    -0.09   -1852.68    -0.20
 22   2.0205  10847.01     0.30   -1537.26     0.22
 23   2.0260  10687.97     0.03   -1559.11     0.14
 24   2.0286  10614.75     0.17   -1570.23     0.11
 25   5.8377  38516.77     0.02   -5250.10    -0.05
 26   5.8515  38357.56    -0.12   -5111.11    -0.11
 27   5.8596  38247.26     0.28   -5033.87    -0.06
 28   5.9255  36942.23    -0.01   -4567.74     0.14
 29   5.9362  36672.02    -0.06   -4523.18    -0.17
 30   5.9474  36375.26     0.14   -4486.37    -0.17
 31   6.0013  34824.31    -0.22   -4463.05     0.07
 32   6.0727  32730.68    -0.08   -4825.54    -0.05

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.

07RY326    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.987    38.995    38.979
ecceobj         0.071     0.071     0.071
incobj         25.470    25.470    25.470
qmin           35.411    35.428    35.422
qmax           42.503    42.527    42.525
amean          38.866    38.870    38.869
amin           38.568    38.552    38.574
amax           39.194    39.182    39.204
emean           0.070     0.071     0.071
emin            0.058     0.058     0.059
emax            0.085     0.086     0.086
imean          26.783    26.781    26.778
imin           26.223    26.229    26.201
imax           27.315    27.330    27.318
excite_mean     0.456     0.456     0.456
fracstop        1.000     1.000     1.000
cjmean          2.798     2.798     2.798

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       186.8     182.0     184.9
kozaiamp        180.0     180.0     180.0