Orbit Fit and Astrometric record for 581804

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: 581804    
# Created Fri Dec  3 02:08:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     49 observations of     49
# Arc:   3.87y
# First observation: 2014/05/29
#  Last observation: 2018/04/11
# Chi-squared of fit:    16.27 DOF:     92 RMS:  0.10
# Min/Max residuals:    -0.31    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.752046E-05  2.627602E-02 -1.378645E-06 -1.472968E-03  2.517377E-02  3.919816E-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
    5.222572 -126.866316   -0.258108    0.089368   -0.977128  2456806.882768
# Heliocentric elements and errors
Epoch:              2456806.5000  =  2014/05/29
Mean Anomaly:           36.74918 +/-     0.000
Argument of Peri:       67.10695 +/-     0.000
Long of Asc Node:      111.02519 +/-     0.000
Inclination:             6.03481 +/-     0.000
Eccentricity:         0.21565683 +/-    0.0000
Semi-Major Axis:     47.93806784 +/-    0.0000
Time of Perihelion: 2444430.9542 +/-       0.0
Perihelion:          37.59989608 +/-    0.0000
Aphelion:            58.27623959 +/-    0.0000
Period (y)              331.9166 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.11685832 +/-    0.0000
Ecliptic Y          -32.58711438 +/-    0.0000
Ecliptic Z            3.61586688 +/-    0.0000
Ecliptic XDOT         0.00201758 +/-    0.0000
Ecliptic YDOT        -0.00206945 +/-    0.0000
Ecliptic ZDOT        -0.00012060 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.70146169 +/-    0.0000
Geocenter to KBO     39.72382383 +/-    0.0000
# Hcoef:  8.27

The following table shows the complete astrometric record for 581804. 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 (581804) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.38199  15 28 21.482  -13 29 50.76  24.0r 581804    568  C~2WaY      
2014 05  29.42085  15 28 21.300  -13 29 50.36  24.6r 581804    568  C~2WaY      
2014 05  29.45970  15 28 21.124  -13 29 49.89  24.0r 581804    568  C~2WaY      
2014 05  30.48958  15 28 16.235  -13 29 34.87  24.2r 581804    568  C~2WaY      
2014 05  31.40597  15 28 11.946  -13 29 21.79  24.4r 581804    568  C~2WaY      
2014 06  21.38515  15 26 42.064  -13 25 22.25  24.3r 581804    568  C~2WaY      
2014 06  21.42426  15 26 41.914  -13 25 21.86  24.6r 581804    568  C~2WaY      
2014 07  19.30175  15 25 24.403  -13 23 47.72  24.0r 581804    568  C~2WaY      
2014 07  19.31792  15 25 24.367  -13 23 47.69  24.7r 581804    568  C~2WaY      
2015 02  20.65667  15 39 26.510  -14 20 04.78  24.8r 581804    568  C~2WaY      
2015 03  19.57074  15 39 05.984  -14 15 55.05  24.0r 581804    568  C~2WaY      
2015 03  21.62951  15 39 01.582  -14 15 27.94  24.2r 581804    568  C~2WaY      
2015 04  18.51079  15 37 30.053  -14 08 05.38  24.1r 581804    568  C~2WaY      
2015 05  17.38343  15 35 15.410  -13 59 43.21  24.4r 581804    568  C~2WaY      
2015 05  17.42514  15 35 15.205  -13 59 42.35  23.9r 581804    568  C~2WaY      
2015 05  17.46733  15 35 14.979  -13 59 41.64  24.3r 581804    568  C~2WaY      
2015 05  24.36911  15 34 41.195  -13 57 52.15  24.3r 581804    568  C~2WaY      
2015 05  24.41533  15 34 40.967  -13 57 51.44  24.4r 581804    568  C~2WaY      
2015 05  24.45620  15 34 40.758  -13 57 50.73  24.3r 581804    568  C~2WaY      
2015 05  26.44379  15 34 31.115  -13 57 20.77  24.0r 581804    568  C~2WaY      
2015 06  18.34328  15 32 47.956  -13 52 37.61  24.3r 581804    568  C~2WaY      
2015 06  18.38434  15 32 47.784  -13 52 37.20  24.2r 581804    568  C~2WaY      
2015 06  21.35896  15 32 36.026  -13 52 10.72  24.5r 581804    568  C~2WaY      
2015 07  10.39102  15 31 34.198  -13 50 29.69  24.8r 581804    568  C~2WaY      
2015 07  18.31678  15 31 16.455  -13 50 25.02  24.5r 581804    568  C~2WaY      
2016 02  06.62508  15 44 51.472  -14 45 26.89  24.5w 581804    568  C~2WaY      
2016 02  12.61062  15 45 02.603  -14 45 23.30  24.6w 581804    568  C~2WaY      
2016 03  15.61859  15 45 00.801  -14 41 44.58  24.5w 581804    568  C~2WaY      
2016 04  03.55474  15 44 14.483  -14 37 29.19  24.6w 581804    568  C~2WaY      
2016 04  08.60428  15 43 57.384  -14 36 10.70  24.7w 581804    568  C~2WaY      
2016 04  29.47779  15 42 31.072  -14 30 22.40  24.7w 581804    568  C~2WaY      
2016 05  04.41287  15 42 08.009  -14 28 58.71  24.3w 581804    568  C~2WaY      
2016 05  30.47415  15 40 01.375  -14 22 11.71  24.1w 581804    568  C~2WaY      
2016 07  04.29413  15 37 39.581  -14 16 47.78  24.6w 581804    568  C~2WaY      
2016 07  05.36242  15 37 36.328  -14 16 43.64  24.6w 581804    568  C~2WaY      
2017 07  28.31194  15 42 35.603  -14 41 58.69        581804    568  C~2WaY      
2017 08  19.27024  15 42 31.027  -14 44 41.05  24.7w 581804    568  C~2WaY      
2017 08  25.27821  15 42 37.822  -14 45 52.90  25.0w 581804    568  C~2WaY      
2017 08  26.25868  15 42 39.246  -14 46 05.88  24.7w 581804    568  C~2WaY      
2018 04  11.40072  15 55 28.128  -15 24 17.85  24.6r 581804    G83  C~4u1R      
2018 04  11.40895  15 55 28.093  -15 24 17.57  24.3r 581804    G83  C~4u1R      
2018 04  11.41732  15 55 28.066  -15 24 17.55  24.4r 581804    G83  C~4u1R      
2018 04  11.42569  15 55 28.037  -15 24 17.37  24.5r 581804    G83  C~4u1R      
2018 04  11.43696  15 55 27.994  -15 24 17.30  24.3r 581804    G83  C~4u1R      
2018 04  11.44533  15 55 27.967  -15 24 17.15  24.5r 581804    G83  C~4u1R      
2018 04  11.45369  15 55 27.935  -15 24 16.88  24.4r 581804    G83  C~4u1R      
2018 04  11.46218  15 55 27.897  -15 24 16.78  24.6r 581804    G83  C~4u1R      
2018 04  11.47114  15 55 27.877  -15 24 16.69  24.4r 581804    G83  C~4u1R      
2018 04  11.47951  15 55 27.849  -15 24 16.77  25.0r 581804    G83  C~4u1R      

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    -0.19       0.00     0.14
     2   0.0001      0.00    -0.10       0.00    -0.03
     3   0.0002      0.00     0.08       0.00    -0.13
     4   0.0030      0.00    -0.14       0.00    -0.07
     5   0.0055      0.00     0.10       0.00    -0.08
     6   0.0630      0.00    -0.06       0.00    -0.02
     7   0.0631      0.00    -0.06       0.00     0.04
     8   0.1394      0.00     0.22       0.00    -0.18
     9   0.1395      0.00     0.10       0.00    -0.12
    10   0.7318      0.00    -0.13       0.00    -0.03
    11   0.8054      0.00     0.01       0.00     0.15
    12   0.8111      0.00    -0.02       0.00    -0.00
    13   0.8874      0.00     0.35       0.00     0.03
    14   0.9665      0.00     0.06       0.00    -0.07
    15   0.9666      0.00     0.12       0.00     0.11
    16   0.9667      0.00    -0.11       0.00     0.13
    17   0.9856      0.00    -0.04       0.00     0.00
    18   0.9857      0.00    -0.02       0.00     0.01
    19   0.9858      0.00    -0.12       0.00     0.09
    20   0.9913      0.00    -0.14       0.00    -0.03
    21   1.0540      0.00     0.07       0.00    -0.03
    22   1.0541      0.00     0.03       0.00    -0.00
    23   1.0622      0.00    -0.01       0.00     0.03
    24   1.1143      0.00     0.01       0.00     0.06
    25   1.1360      0.00    -0.15       0.00     0.06
    26   1.6927      0.00    -0.09       0.00    -0.04
    27   1.7090      0.00     0.06       0.00    -0.06
    28   1.7967      0.00     0.07       0.00     0.19
    29   1.8485      0.00    -0.04       0.00     0.13
    30   1.8623      0.00    -0.04       0.00    -0.04
    31   1.9195      0.00     0.12       0.00     0.01
    32   1.9330      0.00     0.21       0.00    -0.02
    33   2.0044      0.00    -0.05       0.00    -0.02
    34   2.0997      0.00    -0.03       0.00     0.02
    35   2.1026      0.00    -0.03       0.00    -0.06
    36   3.1648      0.00    -0.16       0.00    -0.31
    37   3.2249      0.00     0.02       0.00     0.09
    38   3.2413      0.00     0.15       0.00     0.20
    39   3.2440      0.00    -0.07       0.00     0.02
    40   3.8686      0.00     0.01       0.00    -0.10
    41   3.8687      0.00    -0.07       0.00     0.06
    42   3.8687      0.00    -0.03       0.00    -0.04
    43   3.8687      0.00    -0.01       0.00     0.02
    44   3.8687      0.00    -0.04       0.00    -0.08
    45   3.8688      0.00     0.00       0.00    -0.05
    46   3.8688      0.00    -0.03       0.00     0.10
    47   3.8688      0.00    -0.14       0.00     0.07
    48   3.8688      0.00     0.05       0.00     0.03
    49   3.8689      0.00     0.08       0.00    -0.17

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.

581804    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.555    47.555    47.555
ecceobj         0.209     0.209     0.209
incobj          6.030     6.030     6.030
qmin           36.653    36.653    36.653
qmax           59.298    59.305    59.290
amean          47.796    47.796    47.796
amin           47.239    47.241    47.237
amax           48.421    48.446    48.432
emean           0.190     0.194     0.191
emin            0.148     0.154     0.150
emax            0.231     0.231     0.231
imean           7.270     7.075     7.243
imin            4.442     4.442     4.442
imax            9.689     9.192     9.596
excite_mean     0.231     0.232     0.231
fracstop        1.000     1.000     1.000
cjmean          3.082     3.082     3.082

libcent 0       181.4     184.6     180.7
libamp  0       136.7     135.8     137.4
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        63.4      93.6      64.8
kozaiamp         55.5      95.5      58.8