Orbit Fit and Astrometric record for 13RF98

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: 13RF98    
# Created Tue Oct 17 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   51 observations of   51
# Arc:   2.99y
# First observation: 2013/09/12
#  Last observation: 2016/09/08
Preliminary a, adot, b, bdot, g, gdot:
   0.000003   0.036400   0.000017   0.016240   0.028152   0.000000
# Chi-squared of fit:    22.26 DOF:   96 RMS:  0.12
# Min/Max residuals:    -0.30    0.31
# Exact a, adot, b, bdot, g, gdot:
  2.213667E-05  3.674534E-02  1.071347E-05  1.641686E-02  2.808664E-02  3.547086E-03
# Covariance matrix:
  1.5798E-13  3.3140E-13  7.9127E-15  1.6900E-13  3.3165E-13  3.5401E-12
  3.3140E-13  1.4275E-10 -3.3048E-12  6.4590E-11  2.9076E-11  1.2976E-09
  7.9127E-15 -3.3048E-12  1.1918E-13 -1.5085E-12 -6.3758E-13 -2.9991E-11
  1.6900E-13  6.4590E-11 -1.5085E-12  2.9249E-11  1.3186E-11  5.8726E-10
  3.3165E-13  2.9076E-11 -6.3758E-13  1.3186E-11  6.5079E-12  2.6522E-10
  3.5401E-12  1.2976E-09 -2.9991E-11  5.8726E-10  2.6522E-10  1.1798E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -18.608799   33.234208    0.697349   -0.231794   -0.688740  2456547.844482
# Heliocentric elements and errors
Epoch:              2456540.5000  =  2013/09/05
Mean Anomaly:            0.18523 +/-     0.008
Argument of Peri:      311.91340 +/-     0.314
Long of Asc Node:       67.68345 +/-     0.002
Inclination:            29.51092 +/-     0.002
Eccentricity:         0.90423945 +/-    0.0017
Semi-Major Axis:    377.04052218 +/-    6.3498
Time of Perihelion: 2455164.5826 +/-      48.6
Perihelion:          36.10560938 +/-    0.8721
Aphelion:           717.97543497 +/-   12.1077
Period (y)             7321.3344 +/-    184.95
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.21305104 +/-    0.0026
Ecliptic Y           18.31130291 +/-    0.0017
Ecliptic Z          -11.36111080 +/-    0.0010
Ecliptic XDOT        -0.00126805 +/-    0.0000
Ecliptic YDOT         0.00345432 +/-    0.0000
Ecliptic ZDOT         0.00140643 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.30125348 +/-    0.0023
Geocenter to KBO     35.60411289 +/-    0.0032
# Hcoef:  9.11

The following table shows the complete astrometric record for 13RF98. 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 (13RF98) followed by the observatory code and reference code for the source of the astrometry.

2013 09  12.343704 02 29 07.61   -04 56 34.6   23.5z 13RF98    W84  C~1I28      
2013 09  12.364572 02 29 07.56   -04 56 35.0   24.6i 13RF98    W84  C~1I28      
2013 09  12.382569 02 29 07.50   -04 56 35.4   24.7i 13RF98    W84  C~1I28      
2013 09  29.270208 02 28 05.79   -05 04 36.8   24.3i 13RF98    W84  C~1I28      
2013 09  29.274699 02 28 05.77   -05 04 36.9   24.0i 13RF98    W84  C~1I28      
2013 09  29.283715 02 28 05.74   -05 04 37.1   24.8i 13RF98    W84  C~1I28      
2013 09  29.316852 02 28 05.57   -05 04 38.1   24.4r 13RF98    W84  C~1I28      
2013 10  03.185035 02 27 48.69   -05 06 22.9   23.6z 13RF98    W84  C~1I28      
2013 10  03.220868 02 27 48.53   -05 06 23.9   23.7i 13RF98    W84  C~1I28      
2013 10  03.225394 02 27 48.52   -05 06 23.9   23.3i 13RF98    W84  C~1I28      
2013 10  03.229965 02 27 48.49   -05 06 24.1   24.1i 13RF98    W84  C~1I28      
2013 10  03.234537 02 27 48.48   -05 06 24.2   24.4i 13RF98    W84  C~1I28      
2013 10  03.239144 02 27 48.46   -05 06 24.1   23.9i 13RF98    W84  C~1I28      
2013 10  03.279769 02 27 48.27   -05 06 25.4   24.2r 13RF98    W84  C~1I28      
2013 10  03.284792 02 27 48.25   -05 06 25.6   23.7r 13RF98    W84  C~1I28      
2013 10  10.215833 02 27 15.96   -05 09 23.6   24.6g 13RF98    W84  C~1I28      
2013 10  10.218484 02 27 15.96   -05 09 23.6   24.6g 13RF98    W84  C~1I28      
2013 10  10.328981 02 27 15.39   -05 09 26.4   23.3z 13RF98    W84  C~1I28      
2013 10  11.127616 02 27 11.54   -05 09 45.8   23.7i 13RF98    W84  C~1I28      
2013 10  11.132106 02 27 11.53   -05 09 46.1   23.8i 13RF98    W84  C~1I28      
2013 10  11.136609 02 27 11.50   -05 09 46.2   24.0i 13RF98    W84  C~1I28      
2013 10  11.141123 02 27 11.48   -05 09 46.2   23.5i 13RF98    W84  C~1I28      
2013 10  11.145613 02 27 11.45   -05 09 46.4   23.9i 13RF98    W84  C~1I28      
2013 10  11.192720 02 27 11.22   -05 09 47.6   23.9r 13RF98    W84  C~1I28      
2013 10  11.197755 02 27 11.20   -05 09 47.6   24.2r 13RF98    W84  C~1I28      
2013 10  11.202743 02 27 11.17   -05 09 47.8   23.9r 13RF98    W84  C~1I28      
2013 10  15.138333 02 26 51.74   -05 11 20.4   24.1i 13RF98    W84  C~1I28      
2013 10  15.142813 02 26 51.72   -05 11 20.6   24.0i 13RF98    W84  C~1I28      
2013 10  15.151806 02 26 51.68   -05 11 20.6   24.2i 13RF98    W84  C~1I28      
2013 10  15.157731 02 26 51.66   -05 11 21.0   24.4r 13RF98    W84  C~1I28      
2013 11  06.145567 02 24 56.88   -05 17 43.6   24.2g 13RF98    W84  C~1I28      
2013 11  06.148229 02 24 56.88   -05 17 43.8   24.8g 13RF98    W84  C~1I29      
2013 11  06.150903 02 24 56.87   -05 17 43.8   24.9g 13RF98    W84  C~1I29      
2013 11  06.253773 02 24 56.31   -05 17 45.0   24.0i 13RF98    W84  C~1I29      
2013 11  06.258322 02 24 56.28   -05 17 45.0   24.1i 13RF98    W84  C~1I29      
2013 11  07.053993 02 24 52.12   -05 17 53.7   24.3r 13RF98    W84  C~1I29      
2013 11  07.058970 02 24 52.09   -05 17 53.7   24.4r 13RF98    W84  C~1I29      
2013 11  07.063947 02 24 52.09   -05 17 53.7   24.1r 13RF98    W84  C~1I29      
2016 09  01.07529  02 49 16.85   -00 09 24.3   24.0R 13RF98    950  C~240V      
2016 09  01.20478  02 49 16.63   -00 09 27.0   23.7R 13RF98    950  C~240V      
2016 09  05.114385 02 49 09.83   -00 10 52.0   24.6r 13RF98    950  C~1ztS      
2016 09  06.122606 02 49 07.83   -00 11 14.2   24.4r 13RF98    950  C~1ztS      
2016 09  06.129458 02 49 07.81   -00 11 14.5   24.4r 13RF98    950  C~1ztS      
2016 09  06.142113 02 49 07.79   -00 11 14.7   24.5r 13RF98    950  C~1ztS      
2016 09  06.148191 02 49 07.78   -00 11 14.7   24.5r 13RF98    950  C~1ztS      
2016 09  06.151823 02 49 07.77   -00 11 14.8   24.5r 13RF98    950  C~1ztS      
2016 09  07.154454 02 49 05.70   -00 11 37.3   24.5r 13RF98    950  C~1ztS      
2016 09  08.116547 02 49 03.61   -00 11 59.1   24.6r 13RF98    950  C~1ztS      
2016 09  08.120114 02 49 03.60   -00 11 59.1   24.6r 13RF98    950  C~1ztS      
2016 09  08.123483 02 49 03.60   -00 11 59.3   24.5r 13RF98    950  C~1ztS      
2016 09  08.126326 02 49 03.59   -00 11 59.4   24.5r 13RF98    950  C~1ztS      

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    -0.30       0.00    -0.30
  2   0.0001     -0.84    -0.03      -0.13    -0.19
  3   0.0001     -1.82    -0.05      -0.21    -0.05
  4   0.0463  -1031.74     0.16    -146.22    -0.17
  5   0.0464  -1032.05     0.16    -146.22    -0.15
  6   0.0464  -1032.54     0.31    -146.26    -0.15
  7   0.0465  -1035.27    -0.09    -146.35    -0.10
  8   0.0571  -1307.99    -0.15    -161.03     0.09
  9   0.0572  -1310.58    -0.12    -161.18     0.03
 10   0.0572  -1310.72     0.07    -161.13     0.09
 11   0.0572  -1311.21    -0.08    -161.17     0.07
 12   0.0572  -1311.38     0.08    -161.21     0.03
 13   0.0572  -1311.63     0.17    -161.02     0.24
 14   0.0573  -1314.74     0.04    -161.30     0.06
 15   0.0573  -1315.09     0.06    -161.39    -0.02
 16   0.0763  -1829.27     0.11    -168.38     0.07
 17   0.0763  -1829.27     0.31    -168.38     0.07
 18   0.0766  -1838.24    -0.10    -168.18     0.12
 19   0.0788  -1898.93    -0.05    -167.30     0.22
 20   0.0788  -1899.18     0.06    -167.54    -0.02
 21   0.0788  -1899.63    -0.04    -167.48     0.03
 22   0.0788  -1899.91     0.02    -167.38     0.12
 23   0.0789  -1900.40    -0.12    -167.42     0.08
 24   0.0790  -1904.04    -0.10    -167.41     0.01
 25   0.0790  -1904.32     0.01    -167.31     0.10
 26   0.0790  -1904.81    -0.09    -167.35     0.06
 27   0.0898  -2209.37    -0.11    -157.94     0.09
 28   0.0898  -2209.72    -0.11    -158.03    -0.02
 29   0.0898  -2210.28     0.04    -157.83     0.15
 30   0.0898  -2210.70     0.10    -158.11    -0.15
 31   0.1500  -3955.20    -0.16      51.67     0.15
 32   0.1500  -3955.27    -0.01      51.48    -0.08
 33   0.1501  -3955.41     0.06      51.53    -0.07
 34   0.1503  -3963.70    -0.09      53.18    -0.08
 35   0.1503  -3964.12    -0.15      53.33    -0.00
 36   0.1525  -4025.64    -0.05      65.78    -0.13
 37   0.1525  -4026.06    -0.08      65.93    -0.07
 38   0.1526  -4026.06     0.31      65.93    -0.15
 39   2.9698  22968.21     0.10   10182.47    -0.00
 40   2.9702  22964.14    -0.02   10181.02     0.09
 41   2.9809  22837.62    -0.04   10134.72    -0.17
 42   2.9837  22801.37    -0.05   10123.76     0.04
 43   2.9837  22800.98    -0.18   10123.58    -0.07
 44   2.9837  22800.63    -0.05   10123.49    -0.02
 45   2.9837  22800.48     0.03   10123.54     0.09
 46   2.9837  22800.31    -0.01   10123.50     0.09
 47   2.9865  22762.96     0.14   10112.61     0.01
 48   2.9891  22725.57    -0.00   10102.49     0.00
 49   2.9891  22725.43     0.00   10102.54     0.09
 50   2.9891  22725.36     0.07   10102.35    -0.07
 51   2.9891  22725.18     0.01   10102.31    -0.08

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.

13RF98    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       404.049   435.553   377.588
ecceobj         0.911     0.917     0.904
incobj         29.515    29.511    29.520
qmin           33.071    32.779    33.338
qmax          787.693   928.679   728.763
amean         364.811   403.982   340.154
amin          338.821   365.515   314.869
amax          411.928   482.486   382.597
emean           0.900     0.910     0.893
emin            0.888     0.898     0.879
emax            0.912     0.925     0.905
imean          28.541    28.568    28.749
imin           27.474    27.490    27.586
imax           29.830    29.962    30.118
excite_mean     1.019     1.028     1.014
fracstop        1.000     1.000     1.000
cjmean          2.741     2.739     2.744

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       317.3     317.1     321.7
kozaiamp          8.1       7.7       9.9