Orbit Fit and Astrometric record for 591486

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: 591486    
# Created Sat Nov 27 02:08:18 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     44 observations of     44
# Arc:   5.07y
# First observation: 2013/10/04
#  Last observation: 2018/10/28
# Chi-squared of fit:     9.55 DOF:     82 RMS:  0.08
# Min/Max residuals:    -0.28    0.17
# Exact a, adot, b, bdot, g, gdot:
  2.054045E-05  4.563607E-02 -1.021424E-06 -2.279703E-03  3.530270E-02 -5.050458E-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
  -10.296954   23.595759    0.221559   -0.174264   -0.959810  2456569.702588
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          342.66888 +/-     0.000
Argument of Peri:      285.53181 +/-     0.000
Long of Asc Node:      129.56627 +/-     0.000
Inclination:            10.36895 +/-     0.000
Eccentricity:         0.28383740 +/-    0.0000
Semi-Major Axis:     39.54849030 +/-    0.0000
Time of Perihelion: 2460943.8810 +/-       0.0
Perihelion:          28.32314953 +/-    0.0000
Aphelion:            50.77383106 +/-    0.0000
Period (y)              248.7156 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.52202151 +/-    0.0000
Ecliptic Y           11.34634324 +/-    0.0000
Ecliptic Z           -5.06340665 +/-    0.0000
Ecliptic XDOT        -0.00180497 +/-    0.0000
Ecliptic YDOT         0.00307506 +/-    0.0000
Ecliptic ZDOT        -0.00010380 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.28821048 +/-    0.0000
Geocenter to KBO     28.32654580 +/-    0.0000
# Hcoef:  8.28

The following table shows the complete astrometric record for 591486. 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 (591486) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.20181  01 42 29.56   -00 25 14.3   23.5g 591486    W84  C~3clR      
2014 10  01.33657  01 52 46.252  +00 26 57.88  23.2r 591486    W84  C~4yRE      
2014 10  01.33657  01 52 46.25   +00 26 57.9   23.0r 591486    W84  C~3clR      
2014 10  01.33794  01 52 46.24   +00 26 58.0   22.4i 591486    W84  C~3clR      
2014 10  01.33794  01 52 46.245  +00 26 57.96  22.4i 591486    W84  C~4yRE      
2014 10  03.32771  01 52 34.887  +00 25 36.77  23.6g 591486    W84  C~4yRE      
2014 10  03.32771  01 52 34.88   +00 25 36.8   23.8g 591486    W84  C~3clR      
2014 10  03.32907  01 52 34.874  +00 25 36.74  22.8r 591486    W84  C~4yRE      
2014 10  03.32907  01 52 34.87   +00 25 36.7   22.9r 591486    W84  C~3clR      
2014 10  23.27656  01 50 33.463  +00 12 50.36  22.7r 591486    W84  C~4yRE      
2014 10  23.27656  01 50 33.46   +00 12 50.4   22.8r 591486    W84  C~3clR      
2014 10  23.27793  01 50 33.451  +00 12 50.20  22.5i 591486    W84  C~4yRE      
2014 11  28.12559  01 47 08.745  -00 01 59.73  22.0z 591486    W84  C~4yRE      
2014 12  12.05597  01 46 13.20   -00 03 28.1   23.2r 591486    W84  C~3clR      
2014 12  12.05597  01 46 13.205  -00 03 28.11  23.2r 591486    W84  C~4yRE      
2015 11  20.13336  01 57 50.61   +00 50 19.0   22.8i 591486    W84  C~3clR      
2015 11  20.13336  01 57 50.614  +00 50 19.04  22.5i 591486    W84  C~4yRE      
2015 11  20.13475  01 57 50.607  +00 50 18.90  22.4z 591486    W84  C~4yRE      
2015 12  29.13369  01 55 24.195  +00 47 46.84  22.5i 591486    W84  C~4yRE      
2015 12  29.13369  01 55 24.19   +00 47 46.8   22.8i 591486    W84  C~3clR      
2015 12  29.13643  01 55 24.190  +00 47 46.53  22.1z 591486    W84  C~4yRE      
2016 01  12.05868  01 55 14.73   +00 52 02.4   23.6r 591486    W84  C~3clR      
2016 09  09.40159  02 14 37.79   +02 21 55.8   23.0i 591486    W84  C~3clR      
2016 09  09.40159  02 14 37.794  +02 21 55.81  22.9i 591486    W84  C~4yRE      
2016 09  10.37651  02 14 34.25   +02 21 19.8   22.8r 591486    W84  C~3clR      
2016 09  10.37651  02 14 34.251  +02 21 19.74  22.7r 591486    W84  C~4yRE      
2016 09  10.37787  02 14 34.25   +02 21 19.7   23.8g 591486    W84  C~3clR      
2016 09  10.37787  02 14 34.250  +02 21 19.73  23.6g 591486    W84  C~4yRE      
2016 09  10.38614  02 14 34.208  +02 21 19.38  22.7z 591486    W84  C~4yRE      
2016 10  22.23205  02 10 51.720  +01 54 25.91  22.6z 591486    W84  C~4yRE      
2016 10  28.23296  02 10 13.57   +01 50 58.8   23.0r 591486    W84  C~3clR      
2016 10  28.23296  02 10 13.570  +01 50 58.76  22.9r 591486    W84  C~4yRE      
2016 10  28.23436  02 10 13.56   +01 50 58.7   23.1i 591486    W84  C~3clR      
2016 10  28.23436  02 10 13.563  +01 50 58.65  22.6i 591486    W84  C~4yRE      
2016 11  03.22984  02 09 35.49   +01 47 47.4   23.1r 591486    W84  C~3clR      
2016 11  03.23120  02 09 35.46   +01 47 47.4   22.9i 591486    W84  C~3clR      
2016 11  03.23120  02 09 35.463  +01 47 47.36  22.8i 591486    W84  C~4yRE      
2016 11  03.23258  02 09 35.448  +01 47 47.20  22.3z 591486    W84  C~4yRE      
2016 11  27.12737  02 07 15.23   +01 38 35.4   22.5r 591486    W84  C~3clR      
2016 11  28.11615  02 07 10.13   +01 38 21.2   22.4i 591486    W84  C~3clR      
2016 11  28.11753  02 07 10.12   +01 38 21.0   23.0g 591486    W84  C~3clR      
2017 09  18.31069  02 24 15.239  +03 07 01.41  22.5r 591486    W84  C~4yRE      
2017 10  22.22461  02 21 09.078  +02 45 31.66  22.2z 591486    W84  C~4yRE      
2018 10  28.26415  02 30 53.385  +03 33 11.63  22.2z 591486    W84  C~4yRE      

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    -0.02       0.00    -0.01
     2   0.9915      0.00     0.02       0.00    -0.06
     3   0.9915      0.00    -0.01       0.00    -0.04
     4   0.9915      0.00    -0.04       0.00     0.12
     5   0.9915      0.00     0.03       0.00     0.08
     6   0.9969      0.00    -0.10       0.00    -0.03
     7   0.9969      0.00     0.00       0.00    -0.06
     8   0.9969      0.00    -0.07       0.00    -0.03
     9   0.9969      0.00    -0.13       0.00    -0.07
    10   1.0515      0.00     0.04       0.00     0.03
    11   1.0515      0.00    -0.00       0.00     0.07
    12   1.0515      0.00    -0.01       0.00    -0.09
    13   1.1497      0.00     0.10       0.00     0.14
    14   1.1878      0.00     0.13       0.00    -0.04
    15   1.1878      0.00     0.06       0.00    -0.03
    16   2.1271      0.00    -0.00       0.00     0.13
    17   2.1271      0.00    -0.06       0.00     0.09
    18   2.1271      0.00     0.01       0.00     0.02
    19   2.2339      0.00     0.01       0.00     0.03
    20   2.2339      0.00     0.09       0.00     0.07
    21   2.2339      0.00     0.08       0.00    -0.28
    22   2.2720      0.00    -0.00       0.00     0.15
    23   2.9328      0.00     0.09       0.00     0.00
    24   2.9328      0.00     0.03       0.00    -0.01
    25   2.9355      0.00     0.08       0.00    -0.04
    26   2.9355      0.00     0.07       0.00     0.02
    27   2.9355      0.00     0.15       0.00    -0.00
    28   2.9355      0.00     0.15       0.00    -0.03
    29   2.9355      0.00    -0.01       0.00    -0.04
    30   3.0500      0.00     0.06       0.00     0.10
    31   3.0665      0.00    -0.02       0.00     0.08
    32   3.0665      0.00    -0.02       0.00     0.04
    33   3.0665      0.00     0.01       0.00    -0.02
    34   3.0665      0.00    -0.04       0.00     0.03
    35   3.0829      0.00     0.17       0.00    -0.06
    36   3.0829      0.00    -0.10       0.00    -0.06
    37   3.0829      0.00    -0.15       0.00    -0.02
    38   3.0829      0.00    -0.20       0.00    -0.18
    39   3.1483      0.00     0.02       0.00     0.01
    40   3.1510      0.00    -0.06       0.00     0.10
    41   3.1510      0.00    -0.10       0.00    -0.08
    42   3.9565      0.00    -0.05       0.00     0.02
    43   4.0493      0.00     0.09       0.00     0.17
    44   5.0652      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.

591486    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.759    39.759    39.760
ecceobj         0.286     0.286     0.286
incobj         10.362    10.362    10.362
qmin           27.847    27.908    27.844
qmax           51.591    51.695    51.530
amean          39.455    39.455    39.455
amin           39.013    39.005    39.016
amax           39.991    39.979    39.991
emean           0.252     0.252     0.252
emin            0.186     0.186     0.186
emax            0.292     0.293     0.292
imean          10.794    10.799    10.794
imin            7.887     7.903     7.891
imax           14.572    14.572    14.573
excite_mean     0.316     0.316     0.316
fracstop        1.000     1.000     1.000
cjmean          2.938     2.938     2.938

libcent 0       180.5     180.2     180.6
libamp  0        79.9      79.4      80.1
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       255.1     255.4     255.0
kozaiamp         85.0      85.1      85.0