Orbit Fit and Astrometric record for 01QF331

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: 01QF331   
# Created Tue Oct 17 01:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   46 observations of   48
# Arc:  15.27y
# First observation: 2001/08/19
#  Last observation: 2015/12/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.002982   0.038654   0.000311  -0.001785   0.037919   0.000000
# Chi-squared of fit:    25.45 DOF:   86 RMS:  0.13
# Min/Max residuals:    -0.30    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.653790E-05  3.295758E-02 -3.808576E-06 -1.516376E-03  2.927622E-02 -6.171393E-03
# Covariance matrix:
  4.3847E-13 -1.1321E-13 -5.5349E-15  4.2359E-15 -2.2290E-14 -1.5832E-13
 -1.1321E-13  8.2122E-14  5.0180E-15 -3.8240E-15  3.4470E-14  1.4237E-13
 -5.5349E-15  5.0180E-15  3.3614E-13 -2.4915E-14  2.1771E-15  8.9091E-15
  4.2359E-15 -3.8240E-15 -2.4915E-14  2.1288E-15 -1.6013E-15 -6.7933E-15
 -2.2290E-14  3.4470E-14  2.1771E-15 -1.6013E-15  6.5725E-14  5.7621E-14
 -1.5832E-13  1.4237E-13  8.9091E-15 -6.7933E-15  5.7621E-14  2.5306E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.443878  -13.544667    0.235961   -0.007750   -0.979468  2451782.719823
# Heliocentric elements and errors
Epoch:              2451780.5000  =  2000/08/24
Mean Anomaly:          323.35014 +/-     0.004
Argument of Peri:      248.90749 +/-     0.006
Long of Asc Node:      156.77833 +/-     0.001
Inclination:             2.66869 +/-     0.000
Eccentricity:         0.25727683 +/-    0.0000
Semi-Major Axis:     42.53323093 +/-    0.0017
Time of Perihelion: 2462095.3009 +/-       0.8
Perihelion:          31.59041592 +/-    0.0016
Aphelion:            53.47604593 +/-    0.0023
Period (y)              277.3964 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.10916901 +/-    0.0003
Ecliptic Y           -8.45346876 +/-    0.0001
Ecliptic Z           -0.26476407 +/-    0.0000
Ecliptic XDOT         0.00015242 +/-    0.0000
Ecliptic YDOT         0.00313714 +/-    0.0000
Ecliptic ZDOT        -0.00013718 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.14209221 +/-    0.0003
Geocenter to KBO     34.15742007 +/-    0.0003
# Hcoef:  7.93

The following table shows the complete astrometric record for 01QF331. 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 (01QF331) followed by the observatory code and reference code for the source of the astrometry.

2000 08  26.21908  23 10 50.37   -05 45 16.1   22.6R 01QF331   807  C~1x6f      
2000 08  26.27600  23 10 50.08   -05 45 17.8         01QF331   807  C~1x6f      
2001 08  19.23948  23 18 35.72   -05 01 44.5   21.5R 01QF331   807  Ch1434      
2001 08  19.32335  23 18 35.31   -05 01 47.1         01QF331   807  Ch1434      
2001 10  20.24162  23 13 35.65   -05 34 13.7   22.8R 01QF331   695  Ch1434      
2001 10  20.30161  23 13 35.41   -05 34 15.2         01QF331   695  Ch1434      
2001 10  21.12919  23 13 32.37   -05 34 34.5         01QF331   695  Ch1434      
2013 08  05.48926  00 51 00.415  +03 46 51.05  22.9r 01QF331   568  C~2Gdn      
2013 08  05.53771  00 51 00.318  +03 46 50.40  23.1r 01QF331   568  C~2Gdn      
2013 08  08.46817  00 50 54.066  +03 46 00.36  23.2r 01QF331   568  C~2Gdn      
2013 08  08.50699  00 50 53.968  +03 45 59.76  23.1r 01QF331   568  C~2Gdn      
2013 08  31.55306  00 49 37.505  +03 36 44.48  22.8r 01QF331   568  C~2Gdn      
2013 09  01.43879  00 49 33.724  +03 36 18.18  23.0r 01QF331   568  C~2Gdn      
2013 09  01.47776  00 49 33.556  +03 36 17.04  22.8r 01QF331   568  C~2Gdn      
2013 09  29.34928  00 47 13.540  +03 20 37.22  22.8r 01QF331   568  C~2Gdn      
2013 09  29.38812  00 47 13.323  +03 20 35.81  22.6r 01QF331   568  C~2Gdn      
2013 09  29.43193  00 47 13.075  +03 20 34.26  22.7r 01QF331   568  C~2Gdn      
2013 10  02.42297  00 46 56.602  +03 18 46.73  22.5r 01QF331   568  C~2Gdn      
2013 10  04.51453  00 46 45.020  +03 17 31.38  22.8r 01QF331   568  C~2Gdn      
2013 10  04.52297  00 46 44.977  +03 17 31.17  22.8r 01QF331   568  C~2Gdn      
2013 10  04.52783  00 46 44.946  +03 17 30.89  22.8r 01QF331   568  C~2Gdn      
2013 10  09.48085  00 46 17.531  +03 14 33.60  22.1r 01QF331   568  C~2Gdn      
2013 10  11.213935 00 46 07.98   +03 13 32.2   23.8g 01QF331   W84  C~1x6f      
2013 11  27.27517  00 42 38.119  +02 51 55.57  22.9r 01QF331   568  C~2Gdn      
2013 11  27.32692  00 42 37.972  +02 51 54.76  23.0r 01QF331   568  C~2Gdn      
2013 12  05.33035  00 42 19.456  +02 50 12.69  22.9r 01QF331   568  C~2Gdn      
2013 12  06.19916  00 42 17.868  +02 50 04.32  23.2r 01QF331   568  C~2Gdn      
2014 07  23.55193  00 59 20.864  +04 34 48.18  23.3r 01QF331   568  C~2Gdn      
2014 07  27.53111  00 59 18.587  +04 34 17.96  23.0r 01QF331   568  C~2Gdn      
2014 08  22.54026  00 58 23.294  +04 26 57.30  22.8r 01QF331   568  C~2Gdn      
2014 08  23.46764  00 58 20.143  +04 26 34.57  24.5u 01QF331   568  C~2Gdn      
2014 08  27.61513  00 58 05.084  +04 24 47.58  22.9r 01QF331   568  C~2Gdn      
2014 10  02.263657 00 55 11.76   +04 05 26.4   23.4g 01QF331   W84  C~1x6f      
2014 10  21.210324 00 53 27.08   +03 54 18.6   23.1r 01QF331   W84  C~1x6f      
2014 10  21.232303 00 53 26.95   +03 54 17.7   22.6i 01QF331   W84  C~1x6f      
2014 10  23.29554  00 53 15.921  +03 53 08.03  22.6r 01QF331   568  C~2Gdn      
2014 10  27.26220  00 52 55.074  +03 50 58.09  22.7r 01QF331   568  C~2Gdn      
2014 10  29.200799 00 52 45.11   +03 49 56.9   22.8r 01QF331   W84  C~1x6f      
2014 10  29.202187 00 52 45.10   +03 49 56.8   22.4i 01QF331   W84  C~1x6f      
2014 11  13.072176 00 51 35.56   +03 42 52.4   23.0i 01QF331   W84  C~1x6f      
2014 11  13.082164 00 51 35.51   +03 42 52.4   23.0r 01QF331   W84  C~1x6f      
2014 11  14.068762 00 51 31.41   +03 42 28.0   22.5z 01QF331   W84  C~1x6f      
2014 11  17.055926 00 51 19.45   +03 41 16.8   22.8z 01QF331   W84  C~1x6f      
2014 11  24.25164  00 50 53.680  +03 38 45.84  23.2r 01QF331   568  C~2Gdn      
2014 11  25.24784  00 50 50.480  +03 38 27.37  22.9r 01QF331   568  C~2Gdn      
2014 12  17.32730  00 50 05.454  +03 34 32.18  23.1r 01QF331   568  C~2Gdn      
2015 01  18.23045  00 50 38.579  +03 39 22.17  22.7r 01QF331   568  C~2Gdn      
2015 12  05.055104 00 58 33.40   +04 21 55.0   22.6z 01QF331   W84  C~1x6f      

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 (   0.26)      0.00 (   0.62)
  2   0.0002     -4.65 (   0.34)      0.12 (   0.76)
  3   0.9802   7420.70    -0.18    -306.94     0.13
  4   0.9804   7414.04    -0.26    -306.93     0.18
  5   1.1500   2530.51     0.22    -350.10    -0.12
  6   1.1501   2526.62     0.04    -350.09    -0.13
  7   1.1524   2477.30     0.17    -350.17     0.05
  8  12.9426 103929.86     0.00   -4665.02    -0.16
  9  12.9427 103927.87     0.13   -4665.04    -0.05
 10  12.9507 103795.35    -0.06   -4674.39    -0.16
 11  12.9508 103793.36    -0.12   -4674.35    -0.02
 12  13.0139 102205.59     0.06   -4730.04    -0.16
 13  13.0163 102127.89    -0.05   -4731.59    -0.12
 14  13.0165 102124.45     0.03   -4731.63    -0.12
 15  13.0928  99279.32     0.04   -4752.90    -0.00
 16  13.0929  99274.95     0.03   -4752.89    -0.02
 17  13.0930  99270.00    -0.01   -4752.81     0.03
 18  13.1012  98938.72     0.13   -4752.09     0.10
 19  13.1069  98706.16     0.03   -4751.31     0.02
 20  13.1069  98705.33     0.15   -4751.24     0.09
 21  13.1069  98704.67     0.04   -4751.31     0.01
 22  13.1205  98155.52    -0.07   -4748.35     0.09
 23  13.1252  97964.64    -0.09   -4746.93    -0.05
 24  13.2541  93828.70    -0.07   -4661.33    -0.07
 25  13.2542  93825.87    -0.08   -4661.17    -0.08
 26  13.2761  93469.78    -0.07   -4641.12    -0.09
 27  13.2785  93439.45    -0.02   -4639.01    -0.08
 28  13.9065 114189.28     0.23   -5068.89     0.03
 29  13.9173 114132.96    -0.03   -5085.04    -0.07
 30  13.9886 112916.97    -0.01   -5169.33    -0.17
 31  13.9911 112849.05     0.10   -5171.61    -0.15
 32  14.0025 112525.54    -0.03   -5180.81    -0.12
 33  14.1001 108866.40    -0.26   -5211.05     0.31
 34  14.1519 106698.12    -0.06   -5192.89     0.20
 35  14.1520 106695.41    -0.30   -5192.94     0.11
 36  14.1576 106468.36    -0.14   -5190.26    -0.12
 37  14.1685 106040.61    -0.15   -5183.36    -0.08
 38  14.1738 105836.86     0.20   -5179.11     0.18
 39  14.1738 105836.64     0.12   -5179.14     0.14
 40  14.2145 104420.40     0.09   -5146.54    -0.10
 41  14.2145 104419.54     0.09   -5146.21     0.20
 42  14.2172 104336.58     0.17   -5143.63     0.32
 43  14.2254 104094.74     0.20   -5136.16     0.20
 44  14.2451 103575.61     0.01   -5117.51    -0.07
 45  14.2479 103511.35    -0.01   -5114.91    -0.19
 46  14.3083 102620.96    -0.12   -5053.01    -0.01
 47  14.3957 103333.00    -0.03   -4978.67    -0.17
 48  15.2740 112945.34    -0.06   -5554.35     0.27

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.

01QF331    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.616    42.621    42.611
ecceobj         0.258     0.258     0.258
incobj          2.667     2.667     2.667
qmin           31.212    31.211    31.223
qmax           54.060    54.063    54.031
amean          42.327    42.327    42.327
amin           41.862    41.861    41.833
amax           42.868    42.876    42.857
emean           0.248     0.248     0.247
emin            0.234     0.234     0.234
emax            0.262     0.262     0.261
imean           2.830     2.793     2.927
imin            1.999     1.999     1.999
imax            3.360     3.268     3.616
excite_mean     0.253     0.253     0.253
fracstop        1.000     1.000     1.000
cjmean          3.006     3.006     3.006

libcent 0       180.2     179.8     179.5
libamp  0        77.9      76.2      78.2
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       194.0     192.7     197.1
kozaiamp         52.4      54.0      49.5