Orbit Fit and Astrometric record for 505448

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: 505448    
# Created Sat Dec 16 02:36:55 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   58 observations of   58
# Arc:   4.07y
# First observation: 2013/08/05
#  Last observation: 2017/08/30
# Chi-squared of fit:    20.68 DOF:  110 RMS:  0.11
# Min/Max residuals:    -0.76    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.114573E-05  1.654952E-02  9.093282E-07  2.362750E-03  1.999047E-02 -2.056275E-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
   -2.526862   11.765374    0.869487   -0.023170   -0.525675  2456509.997828
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:          245.54252 +/-     0.000
Argument of Peri:      113.08119 +/-     0.000
Long of Asc Node:       27.82396 +/-     0.000
Inclination:             8.47390 +/-     0.000
Eccentricity:         0.16714042 +/-    0.0000
Semi-Major Axis:     46.38780752 +/-    0.0000
Time of Perihelion: 2493200.3453 +/-       0.0
Perihelion:          38.63453008 +/-    0.0000
Aphelion:            54.14108495 +/-    0.0000
Period (y)              315.9468 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           49.61749925 +/-    0.0000
Ecliptic Y            9.44928962 +/-    0.0000
Ecliptic Z           -2.20534973 +/-    0.0000
Ecliptic XDOT        -0.00072986 +/-    0.0000
Ecliptic YDOT         0.00216366 +/-    0.0000
Ecliptic ZDOT         0.00033584 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.55747608 +/-    0.0000
Geocenter to KBO     50.02394484 +/-    0.0000
# Hcoef:  5.97

The following table shows the complete astrometric record for 505448. 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 (505448) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.49705  00 47 13.494  +02 19 32.51  22.2r 505448    568  C~2NKK      
2013 08  05.55029  00 47 13.386  +02 19 31.49  22.5r 505448    568  C~2NKK      
2013 08  08.47594  00 47 08.269  +02 18 55.17  22.8r 505448    568  C~2NKK      
2013 08  08.51475  00 47 08.189  +02 18 54.49  22.9r 505448    568  C~2NKK      
2013 08  31.56101  00 46 10.643  +02 12 29.15  22.9r 505448    568  C~2NKK      
2013 09  01.44658  00 46 07.924  +02 12 11.68  22.8r 505448    568  C~2NKK      
2013 09  01.48552  00 46 07.800  +02 12 10.89  22.8r 505448    568  C~2NKK      
2013 09  29.35704  00 44 28.805  +02 01 53.49  22.8r 505448    568  C~2Gdp      
2013 09  29.39589  00 44 28.645  +02 01 52.56  22.8r 505448    568  C~2Gdp      
2013 09  29.43972  00 44 28.476  +02 01 51.61  22.8r 505448    568  C~2Gdp      
2013 10  02.43081  00 44 16.984  +02 00 42.35  22.7r 505448    568  C~2NKK      
2013 10  02.43568  00 44 16.960  +02 00 42.28  22.9r 505448    568  C~2NKK      
2013 10  05.31801  00 44 05.859  +01 59 35.96  22.8r 505448    568  C~2NKK      
2013 10  05.32294  00 44 05.838  +01 59 35.61  22.7r 505448    568  C~2NKK      
2013 10  05.35570  00 44 05.712  +01 59 35.02  22.8r 505448    568  C~2NKK      
2013 10  06.36409  00 44 01.823  +01 59 11.89  22.8r 505448    568  C~2NKK      
2013 10  06.42856  00 44 01.575  +01 59 10.28  22.4r 505448    568  C~2NKK      
2013 10  07.35091  00 43 58.023  +01 58 49.40  22.7r 505448    568  C~2NKK      
2013 10  09.48861  00 43 49.783  +01 58 00.66  22.8r 505448    568  C~2NKK      
2013 11  27.28847  00 41 14.768  +01 44 06.18  22.9r 505448    568  C~2NKK      
2013 11  27.33479  00 41 14.668  +01 44 05.76  22.9r 505448    568  C~2NKK      
2014 06  25.59667  00 50 38.213  +02 51 03.70  22.9r 505448    568  C~2NKK      
2014 06  26.59553  00 50 39.459  +02 51 09.95  23.1r 505448    568  C~2NKK      
2014 07  23.57151  00 50 46.241  +02 51 08.62  23.1r 505448    568  C~2NKK      
2014 07  24.59245  00 50 45.484  +02 51 02.30  23.0r 505448    568  C~2NKK      
2014 07  27.55192  00 50 42.876  +02 50 41.35  22.9r 505448    568  C~2NKK      
2014 08  22.51807  00 49 55.503  +02 45 12.86  24.3u 505448    568  C~2NKK      
2014 08  24.49767  00 49 50.271  +02 44 38.29  23.0r 505448    568  C~2NKK      
2014 08  28.46980  00 49 39.159  +02 43 25.86  22.9r 505448    568  C~2NKK      
2014 08  29.61851  00 49 35.799  +02 43 04.14        505448    568  C~2NKK      
2014 10  23.32278  00 46 17.171  +02 23 01.23  22.8r 505448    568  C~2NKK      
2014 10  23.32666  00 46 17.161  +02 23 01.25  22.9r 505448    568  C~2NKK      
2014 10  27.29329  00 46 02.799  +02 21 40.40  22.8r 505448    568  C~2NKK      
2014 11  24.27113  00 44 38.647  +02 14 20.67  22.9r 505448    568  C~2NKK      
2014 11  24.27501  00 44 38.634  +02 14 20.65  22.8r 505448    568  C~2NKK      
2014 11  25.29743  00 44 36.311  +02 14 10.00  22.8r 505448    568  C~2NKK      
2014 11  25.30131  00 44 36.303  +02 14 09.95  23.0r 505448    568  C~2NKK      
2014 12  17.33921  00 44 03.093  +02 12 13.20  22.9r 505448    568  C~2NKK      
2014 12  17.34321  00 44 03.096  +02 12 13.14  23.1r 505448    568  C~2NKK      
2015 01  17.23338  00 44 16.889  +02 16 01.19  22.8r 505448    568  C~2NKK      
2015 08  20.51481  00 53 20.199  +03 15 42.98  22.8r 505448    568  C~2NKK      
2015 10  12.27435  00 50 19.424  +02 57 09.38  22.7r 505448    568  C~2NKK      
2015 10  12.28379  00 50 19.396  +02 57 09.23  24.4u 505448    568  C~2NKK      
2015 10  12.30125  00 50 19.319  +02 57 08.79  24.3u 505448    568  C~2NKK      
2015 10  12.30992  00 50 19.285  +02 57 08.55  24.6u 505448    568  C~2NKK      
2015 10  12.31425  00 50 19.269  +02 57 08.60  24.5u 505448    568  C~2NKK      
2015 10  12.31859  00 50 19.258  +02 57 08.39  24.5u 505448    568  C~2NKK      
2015 10  12.32292  00 50 19.247  +02 57 08.32  23.4u 505448    568  C~2NKK      
2015 10  12.32725  00 50 19.214  +02 57 08.02  24.8u 505448    568  C~2NKK      
2015 10  12.34025  00 50 19.154  +02 57 07.61  24.4u 505448    568  C~2NKK      
2015 10  12.35600  00 50 19.108  +02 57 07.54  22.7r 505448    568  C~2NKK      
2015 10  12.42687  00 50 18.825  +02 57 05.92  22.6r 505448    568  C~2NKK      
2015 12  07.39898  00 47 31.211  +02 42 22.18  23.0w 505448    568  C~2NKK      
2015 12  31.22795  00 47 15.569  +02 42 26.06  23.1w 505448    568  C~2NKK      
2017 07  23.60916  01 00 41.502  +04 20 15.09  23.0w 505448    568  C~2NKK      
2017 08  25.53703  00 59 47.381  +04 14 14.36  23.1w 505448    568  C~2NKK      
2017 08  30.47857  00 59 33.659  +04 12 47.76  23.0w 505448    568  C~2NKK      
2017 08  30.53116  00 59 33.500  +04 12 46.85  23.1w 505448    568  C~2NKK      

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    -0.12       0.00    -0.76
  2   0.0001      0.00     0.07       0.00    -0.04
  3   0.0082      0.00     0.07       0.00     0.08
  4   0.0083      0.00    -0.02       0.00    -0.09
  5   0.0714      0.00    -0.20       0.00    -0.25
  6   0.0738      0.00     0.00       0.00    -0.01
  7   0.0739      0.00    -0.00       0.00    -0.02
  8   0.1502      0.00     0.14       0.00     0.04
  9   0.1503      0.00     0.01       0.00     0.01
 10   0.1504      0.00     0.04       0.00     0.07
 11   0.1586      0.00     0.07       0.00    -0.00
 12   0.1586      0.00    -0.01       0.00     0.04
 13   0.1665      0.00     0.03       0.00     0.11
 14   0.1665      0.00     0.01       0.00    -0.12
 15   0.1666      0.00     0.04       0.00     0.04
 16   0.1694      0.00     0.05       0.00     0.03
 17   0.1696      0.00     0.12       0.00    -0.11
 18   0.1721      0.00     0.09       0.00     0.09
 19   0.1779      0.00     0.05       0.00    -0.06
 20   0.3115      0.00     0.01       0.00     0.04
 21   0.3117      0.00    -0.03       0.00     0.02
 22   0.8873      0.00    -0.03       0.00     0.02
 23   0.8901      0.00    -0.04       0.00     0.02
 24   0.9639      0.00    -0.09       0.00    -0.03
 25   0.9667      0.00    -0.02       0.00     0.01
 26   0.9748      0.00     0.04       0.00     0.00
 27   1.0459      0.00    -0.08       0.00     0.15
 28   1.0513      0.00     0.01       0.00     0.01
 29   1.0622      0.00    -0.00       0.00    -0.02
 30   1.0654      0.00     0.10       0.00    -0.02
 31   1.2151      0.00     0.04       0.00     0.02
 32   1.2151      0.00     0.11       0.00     0.12
 33   1.2260      0.00     0.14       0.00     0.02
 34   1.3026      0.00     0.10       0.00     0.02
 35   1.3026      0.00     0.04       0.00     0.04
 36   1.3054      0.00     0.03       0.00     0.07
 37   1.3054      0.00     0.04       0.00     0.06
 38   1.3658      0.00    -0.04       0.00    -0.06
 39   1.3658      0.00     0.05       0.00    -0.12
 40   1.4503      0.00    -0.02       0.00    -0.04
 41   2.0397      0.00     0.03       0.00     0.02
 42   2.1842      0.00     0.03       0.00     0.04
 43   2.1842      0.00     0.17       0.00     0.11
 44   2.1843      0.00     0.04       0.00     0.06
 45   2.1843      0.00     0.04       0.00     0.02
 46   2.1843      0.00     0.05       0.00     0.16
 47   2.1843      0.00     0.14       0.00     0.05
 48   2.1843      0.00     0.23       0.00     0.08
 49   2.1843      0.00    -0.00       0.00    -0.12
 50   2.1844      0.00    -0.14       0.00    -0.24
 51   2.1844      0.00     0.10       0.00     0.05
 52   2.1846      0.00     0.04       0.00     0.03
 53   2.3379      0.00    -0.12       0.00     0.06
 54   2.4031      0.00     0.02       0.00    -0.03
 55   3.9647      0.00     0.04       0.00     0.03
 56   4.0549      0.00     0.06       0.00     0.02
 57   4.0684      0.00     0.05       0.00    -0.04
 58   4.0685      0.00     0.01       0.00     0.01

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.

505448    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.610    46.609    46.610
ecceobj         0.162     0.162     0.162
incobj          8.450     8.450     8.450
qmin           37.744    37.736    37.736
qmax           55.404    55.434    55.356
amean          46.369    46.369    46.369
amin           45.973    45.967    45.963
amax           46.825    46.854    46.859
emean           0.169     0.169     0.169
emin            0.155     0.155     0.155
emax            0.183     0.184     0.183
imean           8.019     8.019     8.019
imin            7.397     7.399     7.397
imax            8.535     8.539     8.544
excite_mean     0.219     0.219     0.219
fracstop        1.000     1.000     1.000
cjmean          3.072     3.072     3.072

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       177.7     177.7     177.7
kozaiamp        179.9     179.9     180.0