Orbit Fit and Astrometric record for 505446

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: 505446    
# Created Mon Dec 18 02:36:53 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   40 observations of   40
# Arc:   4.07y
# First observation: 2013/08/05
#  Last observation: 2017/08/30
# Chi-squared of fit:    21.49 DOF:   74 RMS:  0.13
# Min/Max residuals:    -0.83    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.595695E-05  2.385237E-02 -6.399193E-08  1.726263E-04  2.412785E-02  1.522542E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.693511   13.211018    0.882519   -0.006073   -0.503987  2456509.993918
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:           40.78266 +/-     0.000
Argument of Peri:      254.85501 +/-     0.000
Long of Asc Node:       71.68682 +/-     0.000
Inclination:             0.79351 +/-     0.000
Eccentricity:         0.05916173 +/-    0.0000
Semi-Major Axis:     43.85408087 +/-    0.0000
Time of Perihelion: 2444493.7645 +/-       0.0
Perihelion:          41.25959753 +/-    0.0000
Aphelion:            46.44856420 +/-    0.0000
Period (y)              290.4178 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.03821438 +/-    0.0000
Ecliptic Y            8.73044519 +/-    0.0000
Ecliptic Z           -0.50160883 +/-    0.0000
Ecliptic XDOT        -0.00045637 +/-    0.0000
Ecliptic YDOT         0.00267365 +/-    0.0000
Ecliptic ZDOT         0.00001764 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.95956538 +/-    0.0000
Geocenter to KBO     41.44586766 +/-    0.0000
# Hcoef:  7.33

The following table shows the complete astrometric record for 505446. 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 (505446) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.49314  00 49 42.049  +04 34 36.54  23.6r 505446    568  C~2NKJ      
2013 08  05.54160  00 49 41.967  +04 34 36.01  23.3r 505446    568  C~2NKJ      
2013 08  05.54632  00 49 41.955  +04 34 35.96  23.5r 505446    568  C~2NKJ      
2013 08  08.47205  00 49 36.429  +04 33 58.55  23.6r 505446    568  C~2NKJ      
2013 08  08.51087  00 49 36.348  +04 33 58.00  23.7r 505446    568  C~2NKJ      
2013 08  31.55693  00 48 31.694  +04 26 54.37  23.4r 505446    568  C~2NKJ      
2013 09  01.44270  00 48 28.555  +04 26 34.18  23.2r 505446    568  C~2NKJ      
2013 09  05.42217  00 48 13.983  +04 25 00.21  23.3r 505446    568  C~2NKJ      
2013 09  05.46104  00 48 13.845  +04 24 59.18  23.3r 505446    568  C~2NKJ      
2013 09  29.35316  00 46 33.879  +04 14 21.99  23.3r 505446    568  C~25nl      
2013 09  29.39201  00 46 33.700  +04 14 20.86  23.6r 505446    568  C~25nl      
2013 09  29.43584  00 46 33.508  +04 14 19.72  23.4r 505446    568  C~25nl      
2013 10  02.42685  00 46 20.121  +04 12 55.10  23.1r 505446    568  C~2NKJ      
2013 10  07.34703  00 45 57.991  +04 10 35.53  23.7r 505446    568  C~2NKJ      
2013 10  09.48473  00 45 48.392  +04 09 35.02  23.3r 505446    568  C~2NKJ      
2013 11  27.27905  00 42 48.386  +03 51 04.68  23.4r 505446    568  C~2NKJ      
2013 11  27.33088  00 42 48.264  +03 51 03.91  23.4r 505446    568  C~2NKJ      
2013 12  05.23686  00 42 32.420  +03 49 31.76  23.4r 505446    568  C~2NKJ      
2014 07  23.56754  00 54 58.988  +05 08 38.51  23.5r 505446    568  C~2NKJ      
2014 07  27.54797  00 54 55.988  +05 08 16.25  23.6r 505446    568  C~2NKJ      
2014 08  22.62356  00 54 05.188  +05 02 37.08  23.5r 505446    568  C~2NKJ      
2014 08  24.48990  00 53 59.698  +05 02 01.54  23.5r 505446    568  C~2NKJ      
2014 08  28.46204  00 53 47.232  +05 00 40.96        505446    568  C~2NKJ      
2014 10  23.29942  00 49 53.991  +04 36 09.65  23.3r 505446    568  C~2NKJ      
2014 10  23.30330  00 49 53.957  +04 36 09.71  23.5r 505446    568  C~2NKJ      
2014 10  27.26611  00 49 37.199  +04 34 25.89  23.4r 505446    568  C~2NKJ      
2014 10  27.27001  00 49 37.186  +04 34 25.77  23.2r 505446    568  C~2NKJ      
2014 10  29.26801  00 49 28.918  +04 33 34.91  23.4r 505446    568  C~2NKJ      
2014 10  29.31783  00 49 28.707  +04 33 33.59  23.3r 505446    568  C~2NKJ      
2014 11  24.25552  00 47 59.037  +04 24 27.71  23.3r 505446    568  C~2NKJ      
2014 11  24.26724  00 47 59.013  +04 24 27.39  23.5r 505446    568  C~2NKJ      
2014 11  25.25172  00 47 56.425  +04 24 12.03  23.4r 505446    568  C~2NKJ      
2014 11  25.29355  00 47 56.316  +04 24 11.32  23.6r 505446    568  C~2NKJ      
2015 08  20.52724  00 59 14.651  +05 35 31.78  23.4r 505446    568  C~2NKJ      
2015 12  07.36547  00 52 31.972  +04 53 58.72  23.6w 505446    568  C~2NKJ      
2017 07  23.62323  01 09 57.401  +06 43 21.92  23.6w 505446    568  C~2NKJ      
2017 08  25.54688  01 09 04.460  +06 37 32.62  23.9w 505446    568  C~2NKJ      
2017 08  25.62549  01 09 04.225  +06 37 31.30  23.8w 505446    568  C~2NKJ      
2017 08  30.48798  01 08 49.603  +06 35 58.81  23.6w 505446    568  C~2NKJ      
2017 08  30.54049  01 08 49.425  +06 35 57.73  23.7w 505446    568  C~2NKJ      

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    -0.14       0.00    -0.83
  2   0.0001      0.00     0.06       0.00     0.07
  3   0.0001      0.00     0.01       0.00     0.08
  4   0.0082      0.00     0.10       0.00     0.02
  5   0.0083      0.00     0.10       0.00    -0.01
  6   0.0714      0.00     0.11       0.00    -0.04
  7   0.0738      0.00    -0.07       0.00     0.03
  8   0.0847      0.00     0.07       0.00     0.04
  9   0.0848      0.00     0.24       0.00    -0.05
 10   0.1502      0.00     0.00       0.00     0.08
 11   0.1503      0.00    -0.04       0.00     0.05
 12   0.1504      0.00     0.07       0.00     0.15
 13   0.1586      0.00     0.11       0.00     0.17
 14   0.1721      0.00    -0.21       0.00     0.04
 15   0.1779      0.00    -0.05       0.00    -0.08
 16   0.3115      0.00     0.04       0.00    -0.05
 17   0.3117      0.00     0.08       0.00    -0.11
 18   0.3333      0.00     0.02       0.00     0.00
 19   0.9639      0.00     0.02       0.00    -0.09
 20   0.9748      0.00    -0.01       0.00     0.06
 21   1.0462      0.00    -0.18       0.00    -0.23
 22   1.0513      0.00     0.06       0.00     0.01
 23   1.0622      0.00     0.07       0.00    -0.00
 24   1.2151      0.00     0.28       0.00    -0.07
 25   1.2151      0.00     0.03       0.00     0.10
 26   1.2259      0.00     0.11       0.00     0.03
 27   1.2259      0.00     0.16       0.00     0.01
 28   1.2314      0.00     0.03       0.00     0.14
 29   1.2316      0.00    -0.01       0.00     0.08
 30   1.3026      0.00    -0.05       0.00     0.11
 31   1.3026      0.00     0.07       0.00    -0.02
 32   1.3053      0.00     0.06       0.00     0.02
 33   1.3054      0.00     0.11       0.00    -0.05
 34   2.0398      0.00     0.07       0.00     0.04
 35   2.3378      0.00    -0.05       0.00    -0.04
 36   3.9648      0.00     0.09       0.00     0.14
 37   4.0549      0.00     0.06       0.00    -0.05
 38   4.0551      0.00    -0.01       0.00     0.05
 39   4.0684      0.00     0.08       0.00     0.02
 40   4.0686      0.00    -0.03       0.00    -0.02

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.

505446    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.101    44.101    44.101
ecceobj         0.065     0.065     0.065
incobj          0.793     0.793     0.793
qmin           40.409    40.409    40.409
qmax           47.497    47.500    47.494
amean          43.838    43.838    43.838
amin           43.480    43.480    43.481
amax           44.211    44.204    44.215
emean           0.058     0.058     0.058
emin            0.040     0.040     0.040
emax            0.075     0.075     0.075
imean           1.189     1.189     1.189
imin            0.371     0.371     0.371
imax            1.780     1.779     1.780
excite_mean     0.062     0.062     0.062
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.095

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       197.6     197.6     197.5
kozaiamp        179.9     180.0     179.9