Orbit Fit and Astrometric record for 505478

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: 505478    
# Created Mon Dec 18 02:36:54 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   43 observations of   43
# Arc:   4.08y
# First observation: 2013/08/02
#  Last observation: 2017/08/30
# Chi-squared of fit:    19.34 DOF:   80 RMS:  0.12
# Min/Max residuals:    -0.67    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.436002E-05  1.475710E-02 -2.198914E-06 -2.746945E-03  1.641942E-02 -8.304088E-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
   -0.516120   15.544177    0.924897   -0.003777   -0.422358  2456507.009328
# Heliocentric elements and errors
Epoch:              2456506.5000  =  2013/08/02
Mean Anomaly:          353.45267 +/-     0.000
Argument of Peri:      252.06373 +/-     0.000
Long of Asc Node:      191.95532 +/-     0.000
Inclination:            10.64639 +/-     0.000
Eccentricity:         0.78553914 +/-    0.0000
Semi-Major Axis:    204.66775592 +/-    0.0000
Time of Perihelion: 2475957.1467 +/-       0.0
Perihelion:          43.89322198 +/-    0.0000
Aphelion:           365.44228987 +/-    0.0000
Period (y)             2928.0760 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           59.32801271 +/-    0.0000
Ecliptic Y           15.54580838 +/-    0.0000
Ecliptic Z           -0.54870099 +/-    0.0000
Ecliptic XDOT        -0.00200358 +/-    0.0000
Ecliptic YDOT         0.00199769 +/-    0.0000
Ecliptic ZDOT        -0.00044541 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   61.33390410 +/-    0.0000
Geocenter to KBO     60.90401073 +/-    0.0000
# Hcoef:  6.31

The following table shows the complete astrometric record for 505478. 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 (505478) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.50855  00 58 03.918  +05 38 34.42  24.1r 505478    568  C~2NKV      
2013 08  02.55128  00 58 03.873  +05 38 34.21  24.1r 505478    568  C~2NKV      
2013 08  11.50755  00 57 53.281  +05 37 08.80  23.7r 505478    568  C~2NKV      
2013 08  30.42396  00 57 17.948  +05 32 48.60  23.8r 505478    568  C~2NKV      
2013 08  31.42817  00 57 15.637  +05 32 32.14  24.3r 505478    568  C~2NKV      
2013 08  31.47118  00 57 15.530  +05 32 31.47  24.1r 505478    568  C~2NKV      
2013 09  04.40817  00 57 06.110  +05 31 24.63  24.0r 505478    568  C~2NKV      
2013 09  04.45095  00 57 05.996  +05 31 23.86  23.8r 505478    568  C~2NKV      
2013 10  06.38359  00 55 34.654  +05 20 53.87  23.8r 505478    568  C~2NKV      
2013 10  06.44798  00 55 34.440  +05 20 52.44  24.1r 505478    568  C~2NKV      
2013 10  06.45762  00 55 34.424  +05 20 52.20  23.7r 505478    568  C~2NKV      
2013 10  06.46264  00 55 34.397  +05 20 52.09  23.9r 505478    568  C~2NKV      
2013 10  09.51275  00 55 25.014  +05 19 48.27  23.9r 505478    568  C~2NKV      
2013 10  31.23096  00 54 20.278  +05 12 29.10  24.2r 505478    568  C~2GtD      
2013 10  31.27407  00 54 20.136  +05 12 28.23  24.0r 505478    568  C~2GtD      
2013 10  31.31685  00 54 20.032  +05 12 27.56  24.2r 505478    568  C~2GtD      
2013 11  01.25731  00 54 17.428  +05 12 09.73  23.9r 505478    568  C~2NKV      
2013 11  01.37789  00 54 17.072  +05 12 07.53  23.7r 505478    568  C~2NKV      
2013 12  04.25882  00 53 06.351  +05 04 02.02  24.2r 505478    568  C~2NKV      
2013 12  04.31091  00 53 06.295  +05 04 01.61  24.0r 505478    568  C~2NKV      
2013 12  06.21580  00 53 03.762  +05 03 43.51  24.2r 505478    568  C~2NKV      
2014 06  27.57836  01 01 22.269  +05 50 15.46  24.3r 505478    568  C~2NKV      
2014 06  28.58343  01 01 23.490  +05 50 20.53  24.0r 505478    568  C~2NKV      
2014 07  23.55581  01 01 34.539  +05 50 28.93  24.2r 505478    568  C~2NKV      
2014 07  27.53499  01 01 32.877  +05 50 09.02  24.3r 505478    568  C~2NKV      
2014 08  22.54836  01 01 00.383  +05 45 46.87  24.4r 505478    568  C~2NKV      
2014 08  28.40993  01 00 48.407  +05 44 19.29  23.9r 505478    568  C~2NKV      
2014 08  28.44652  01 00 48.338  +05 44 18.76  24.2r 505478    568  C~2NKV      
2014 10  23.37180  00 58 08.443  +05 25 59.00  24.0r 505478    568  C~2NKV      
2014 10  27.41049  00 57 56.445  +05 24 38.23  23.9r 505478    568  C~2NKV      
2014 11  19.20228  00 56 57.029  +05 17 57.58  24.1r 505478    568  C~2NKV      
2014 11  19.26959  00 56 56.862  +05 17 56.54  23.9r 505478    568  C~2NKV      
2014 11  25.21887  00 56 44.611  +05 16 33.05  23.9r 505478    568  C~2NKV      
2015 01  17.27935  00 56 23.597  +05 13 31.97  24.2r 505478    568  C~2NKV      
2015 08  20.53131  01 04 33.207  +05 57 17.18  23.8r 505478    568  C~2NKV      
2015 12  07.36957  00 59 51.187  +05 25 08.42  24.3w 505478    568  C~2NKV      
2017 01  31.21678  01 03 37.834  +05 37 15.54  24.1w 505478    568  C~2GtD      
2017 01  31.22433  01 03 37.844  +05 37 15.65        505478    568  C~2GtD      
2017 07  24.59111  01 12 06.907  +06 23 26.09  24.1w 505478    568  C~2NKV      
2017 08  25.54688  01 11 31.081  +06 18 14.30  24.2w 505478    568  C~2NKV      
2017 08  25.62549  01 11 30.914  +06 18 13.15  23.7w 505478    568  C~2NKV      
2017 08  30.48798  01 11 20.778  +06 16 57.98  24.1w 505478    568  C~2NKV      
2017 08  30.54049  01 11 20.649  +06 16 57.13  24.2w 505478    568  C~2NKV      

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    -0.09       0.00    -0.67
  2   0.0001      0.00    -0.02       0.00     0.04
  3   0.0246      0.00    -0.12       0.00     0.03
  4   0.0764      0.00     0.02       0.00    -0.01
  5   0.0792      0.00     0.00       0.00    -0.02
  6   0.0793      0.00    -0.07       0.00     0.02
  7   0.0901      0.00    -0.00       0.00    -0.04
  8   0.0902      0.00    -0.10       0.00    -0.07
  9   0.1776      0.00     0.07       0.00     0.09
 10   0.1778      0.00    -0.11       0.00     0.01
 11   0.1778      0.00     0.11       0.00    -0.03
 12   0.1778      0.00    -0.06       0.00    -0.03
 13   0.1862      0.00     0.34       0.00     0.12
 14   0.2456      0.00     0.08       0.00    -0.01
 15   0.2458      0.00    -0.22       0.00    -0.07
 16   0.2459      0.00     0.05       0.00     0.07
 17   0.2485      0.00     0.14       0.00    -0.04
 18   0.2488      0.00    -0.10       0.00     0.02
 19   0.3388      0.00    -0.06       0.00     0.02
 20   0.3390      0.00     0.23       0.00     0.12
 21   0.3442      0.00     0.15       0.00     0.09
 22   0.9009      0.00     0.01       0.00     0.08
 23   0.9037      0.00     0.06       0.00    -0.00
 24   0.9721      0.00     0.17       0.00    -0.01
 25   0.9830      0.00     0.15       0.00    -0.07
 26   1.0542      0.00    -0.02       0.00     0.07
 27   1.0702      0.00    -0.08       0.00    -0.08
 28   1.0703      0.00     0.10       0.00    -0.04
 29   1.2234      0.00     0.20       0.00     0.14
 30   1.2345      0.00     0.10       0.00     0.10
 31   1.2969      0.00     0.04       0.00     0.05
 32   1.2971      0.00    -0.19       0.00     0.01
 33   1.3134      0.00     0.06       0.00    -0.09
 34   1.4586      0.00    -0.06       0.00     0.10
 35   2.0480      0.00     0.07       0.00     0.00
 36   2.3460      0.00    -0.01       0.00    -0.11
 37   3.4982      0.00    -0.02       0.00    -0.07
 38   3.4982      0.00    -0.09       0.00    -0.05
 39   3.9756      0.00    -0.02       0.00    -0.05
 40   4.0631      0.00     0.03       0.00     0.04
 41   4.0633      0.00    -0.07       0.00     0.06
 42   4.0766      0.00     0.17       0.00     0.07
 43   4.0767      0.00     0.01       0.00     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.

505478    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       208.442   208.435   208.448
ecceobj         0.788     0.788     0.788
incobj         10.610    10.610    10.610
qmin           41.837    41.864    41.909
qmax          379.235   381.217   379.018
amean         200.607   201.049   200.684
amin          194.120   194.094   193.735
amax          211.570   212.552   211.467
emean           0.781     0.781     0.781
emin            0.771     0.771     0.771
emax            0.792     0.794     0.792
imean          10.529    10.523    10.516
imin           10.417    10.393    10.386
imax           10.724    10.773    10.735
excite_mean     0.802     0.802     0.802
fracstop        1.000     1.000     1.000
cjmean          3.321     3.321     3.321

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       274.8     278.7     278.4
kozaiamp         23.6      27.8      27.1