Orbit Fit and Astrometric record for 535987

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: 535987    
# Created Fri Apr 26 01:08:44 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     75 observations of     75
# Arc:  11.73y
# First observation: 2010/06/01
#  Last observation: 2022/02/24
# Chi-squared of fit:    61.25 DOF:    144 RMS:  0.16
# Min/Max residuals:    -0.59    0.56
# Exact a, adot, b, bdot, g, gdot:
  1.735122E-05  2.404720E-02 -2.058090E-06 -3.069496E-03  2.407936E-02 -5.656272E-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
    2.393833  141.280859   -0.958287   -0.013825    0.329474  2455348.767246
# Heliocentric elements and errors
Epoch:              2455348.5000  =  2010/06/01
Mean Anomaly:          310.25844 +/-     0.000
Argument of Peri:      235.49348 +/-     0.000
Long of Asc Node:      340.78913 +/-     0.000
Inclination:             7.69253 +/-     0.000
Eccentricity:         0.23133420 +/-    0.0000
Semi-Major Axis:     46.34249281 +/-    0.0000
Time of Perihelion: 2471270.0159 +/-       0.0
Perihelion:          35.62188944 +/-    0.0000
Aphelion:            57.06309618 +/-    0.0000
Period (y)              315.4840 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.71230185 +/-    0.0000
Ecliptic Y           24.99752730 +/-    0.0000
Ecliptic Z            1.73455593 +/-    0.0000
Ecliptic XDOT        -0.00121873 +/-    0.0000
Ecliptic YDOT        -0.00252005 +/-    0.0000
Ecliptic ZDOT        -0.00037560 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.20668779 +/-    0.0000
Geocenter to KBO     41.52954596 +/-    0.0000
# Hcoef:  6.78

The following table shows the complete astrometric record for 535987. 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 (535987) followed by the observatory code and reference code for the source of the astrometry.

2010 06  01.26648  09 37 51.446  +16 40 24.13  22.5G 535987    F51  C~2rYJ      
2011 01  30.55332  09 47 58.688  +15 46 41.53  22.6w 535987    F51  C~1vYB      
2011 01  30.57064  09 47 58.614  +15 46 41.81  22.5w 535987    F51  C~1vYB      
2011 01  30.58575  09 47 58.541  +15 46 42.45  22.8w 535987    F51  C~1vYB      
2011 01  31.53083  09 47 54.001  +15 47 03.95  22.8G 535987    F51  C~2rYJ      
2011 05  29.26640  09 42 56.402  +16 04 08.48  23.3G 535987    F51  C~2rYJ      
2011 10  29.61219  09 55 36.443  +14 53 54.09  23.0G 535987    F51  C~2rYJ      
2012 02  03.58801  09 53 04.047  +15 08 27.34  23.0G 535987    F51  C~2rYJ      
2012 02  04.60456  09 52 59.090  +15 08 51.80  22.6G 535987    F51  C~2rYJ      
2012 02  15.35343  09 52 06.116  +15 13 09.77  22.9G 535987    F51  C~2rYJ      
2014 01  25.43356  10 04 36.458  +13 42 46.93  23.1G 535987    F51  C~2rYJ      
2014 02  20.33834  10 02 31.924  +13 53 20.39  22.8G 535987    F51  C~2rYJ      
2014 02  26.38102  10 02 02.127  +13 55 46.77  23.2G 535987    F51  C~2rYJ      
2014 02  28.30870  10 01 52.737  +13 56 32.10  22.4w 535987    F51  C~1vYB      
2014 02  28.32175  10 01 52.675  +13 56 32.52  22.7w 535987    F51  C~1vYB      
2014 02  28.33490  10 01 52.613  +13 56 32.77  22.3w 535987    F51  C~1vYB      
2014 02  28.34791  10 01 52.546  +13 56 33.19  22.6w 535987    F51  C~1vYB      
2014 03  24.28469  10 00 06.121  +14 04 47.20  23.1G 535987    F51  C~2rYJ      
2014 11  27.59843  10 12 17.498  +12 48 01.86  23.1G 535987    F51  C~2rYJ      
2014 11  29.55452  10 12 18.138  +12 47 59.40  22.9G 535987    F51  C~2rYJ      
2015 01  20.42407  10 10 27.116  +12 58 19.25  22.9w 535987    F51  C~1vYB      
2015 01  20.44519  10 10 27.033  +12 58 19.86  22.8w 535987    F51  C~1vYB      
2015 01  20.45856  10 10 26.964  +12 58 20.18  23.0w 535987    F51  C~1vYB      
2015 01  20.47201  10 10 26.910  +12 58 20.36  22.6w 535987    F51  C~1vYB      
2015 01  22.44380  10 10 18.682  +12 59 04.02  22.9w 535987    F51  C~1vYB      
2015 01  22.45740  10 10 18.612  +12 59 04.52  22.6w 535987    F51  C~1vYB      
2015 01  22.47101  10 10 18.542  +12 59 04.84  22.9w 535987    F51  C~1vYB      
2015 01  22.48471  10 10 18.486  +12 59 05.15  22.7w 535987    F51  C~1vYB      
2015 02  16.34390  10 08 22.062  +13 09 12.12  22.2w 535987    F51  C~1vYB      
2015 02  16.35642  10 08 22.004  +13 09 12.37  22.3w 535987    F51  C~1vYB      
2015 02  16.36899  10 08 21.921  +13 09 12.75  22.6w 535987    F51  C~1vYB      
2015 02  17.38277  10 08 16.908  +13 09 38.15  22.5G 535987    F51  C~2rYJ      
2015 02  17.39559  10 08 16.841  +13 09 38.36  22.4G 535987    F51  C~2rYJ      
2015 02  17.40846  10 08 16.765  +13 09 38.76  22.8G 535987    F51  C~2rYJ      
2015 02  17.42134  10 08 16.708  +13 09 39.06  22.8G 535987    F51  C~2rYJ      
2015 03  14.32373  10 06 16.993  +13 19 29.80  22.5G 535987    F51  C~2rYJ      
2015 03  15.34050  10 06 12.495  +13 19 50.96  23.0G 535987    F51  C~2rYJ      
2016 01  08.47273  10 16 41.033  +12 10 56.98  23.1G 535987    F51  C~2rYJ      
2016 01  09.48614  10 16 37.706  +12 11 15.59  22.7G 535987    F51  C~2rYJ      
2016 02  11.37713  10 14 18.247  +12 23 41.79  22.8G 535987    F51  C~2rYJ      
2016 02  11.38914  10 14 18.179  +12 23 42.43  22.4G 535987    F51  C~2rYJ      
2016 02  11.40080  10 14 18.113  +12 23 42.57  22.3G 535987    F51  C~2rYJ      
2016 02  11.41241  10 14 18.092  +12 23 42.83  22.3G 535987    F51  C~2rYJ      
2016 02  26.51138  10 13 03.534  +12 30 07.76  22.7G 535987    F51  C~2rYJ      
2016 03  06.32557  10 12 20.729  +12 33 43.28  23.0G 535987    F51  C~2rYJ      
2016 03  06.33726  10 12 20.672  +12 33 43.46  22.7G 535987    F51  C~2rYJ      
2016 03  06.34891  10 12 20.619  +12 33 43.91  22.3G 535987    F51  C~2rYJ      
2016 03  06.36066  10 12 20.555  +12 33 44.28  23.2G 535987    F51  C~2rYJ      
2016 03  08.33125  10 12 11.227  +12 34 30.40  22.5G 535987    F51  C~2rYJ      
2016 03  28.27088  10 10 45.645  +12 41 22.36  23.0G 535987    F51  C~2rYJ      
2016 05  05.30931  10 09 17.193  +12 47 02.61  22.7G 535987    F51  C~2rYJ      
2016 05  05.32146  10 09 17.178  +12 47 02.32  22.8G 535987    F51  C~2rYJ      
2016 05  05.34535  10 09 17.163  +12 47 02.46  22.5G 535987    F51  C~2rYJ      
2017 01  27.57908  10 20 55.179  +11 33 43.45  23.5G 535987    F51  C~2rYJ      
2017 01  27.59138  10 20 55.110  +11 33 43.49  22.1G 535987    F51  C~2rYJ      
2017 01  27.60366  10 20 55.046  +11 33 44.18  22.6G 535987    F51  C~2rYJ      
2017 01  27.61604  10 20 54.995  +11 33 44.42  22.8G 535987    F51  C~2rYJ      
2017 03  05.37160  10 17 58.318  +11 49 16.00  22.9G 535987    F51  C~2rYJ      
2017 03  19.42054  10 16 53.512  +11 54 42.50  23.4G 535987    F51  C~2rYJ      
2017 10  30.61444  10 27 28.603  +10 43 54.95  22.9G 535987    F51  C~2rYJ      
2018 01  15.47118  10 27 16.448  +10 44 17.76  22.6G 535987    F51  C~2rYJ      
2018 01  15.48349  10 27 16.407  +10 44 18.08  22.7G 535987    F51  C~2rYJ      
2018 01  15.49585  10 27 16.370  +10 44 18.37  22.7G 535987    F51  C~2rYJ      
2018 01  15.50829  10 27 16.325  +10 44 18.59  22.9G 535987    F51  C~2rYJ      
2018 02  12.40519  10 25 15.933  +10 55 13.21  22.7G 535987    F51  C~2rYJ      
2018 02  12.41690  10 25 15.869  +10 55 13.63  22.7G 535987    F51  C~2rYJ      
2018 02  12.42861  10 25 15.807  +10 55 14.08  22.0G 535987    F51  C~2rYJ      
2018 02  12.44041  10 25 15.776  +10 55 14.45  22.2G 535987    F51  C~2rYJ      
2018 03  18.33865  10 22 31.943  +11 09 34.77  22.4G 535987    F51  C~2rYJ      
2021 02  15.338140 10 41 47.991  +08 37 02.07  22.3G 535987    G37  C~4fMP      
2021 02  15.413830 10 41 47.627  +08 37 04.76        535987    G37  C~4fMP      
2021 02  15.498100 10 41 47.198  +08 37 06.77        535987    G37  C~4fMP      
2022 02  24.394280 10 46 43.921  +07 53 01.40  22.4w 535987    F52  C~5V3l      
2022 02  24.406493 10 46 43.859  +07 53 01.83  22.4w 535987    F52  C~5V3l      
2022 02  24.423179 10 46 43.794  +07 53 02.33  22.3w 535987    F52  C~5V3l      

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    -0.31       0.00     0.11
     2   0.6661      0.00    -0.07       0.00    -0.03
     3   0.6661      0.00     0.08       0.00    -0.15
     4   0.6662      0.00     0.09       0.00     0.13
     5   0.6688      0.00    -0.08       0.00    -0.59
     6   0.9911      0.00     0.05       0.00    -0.01
     7   1.4109      0.00     0.02       0.00    -0.19
     8   1.6764      0.00     0.22       0.00    -0.09
     9   1.6792      0.00    -0.22       0.00     0.00
    10   1.7087      0.00     0.09       0.00    -0.03
    11   3.6528      0.00    -0.12       0.00    -0.01
    12   3.7237      0.00    -0.03       0.00    -0.12
    13   3.7402      0.00    -0.06       0.00     0.20
    14   3.7455      0.00     0.02       0.00    -0.04
    15   3.7455      0.00     0.05       0.00     0.07
    16   3.7456      0.00     0.10       0.00     0.01
    17   3.7456      0.00     0.06       0.00     0.12
    18   3.8111      0.00     0.10       0.00     0.20
    19   4.4910      0.00    -0.02       0.00    -0.02
    20   4.4963      0.00     0.04       0.00    -0.10
    21   4.6384      0.00     0.07       0.00     0.11
    22   4.6384      0.00     0.16       0.00     0.25
    23   4.6384      0.00    -0.03       0.00     0.27
    24   4.6385      0.00     0.01       0.00     0.16
    25   4.6439      0.00     0.14       0.00    -0.16
    26   4.6439      0.00    -0.03       0.00     0.03
    27   4.6440      0.00    -0.20       0.00     0.04
    28   4.6440      0.00    -0.15       0.00     0.04
    29   4.7121      0.00     0.06       0.00     0.17
    30   4.7121      0.00     0.14       0.00     0.10
    31   4.7121      0.00    -0.16       0.00     0.17
    32   4.7149      0.00     0.02       0.00     0.00
    33   4.7149      0.00    -0.01       0.00    -0.11
    34   4.7150      0.00    -0.18       0.00    -0.04
    35   4.7150      0.00    -0.06       0.00    -0.06
    36   4.7832      0.00    -0.31       0.00     0.19
    37   4.7860      0.00     0.10       0.00    -0.11
    38   5.6049      0.00    -0.16       0.00     0.01
    39   5.6077      0.00    -0.24       0.00     0.42
    40   5.6978      0.00     0.27       0.00    -0.07
    41   5.6978      0.00     0.14       0.00     0.26
    42   5.6978      0.00     0.01       0.00     0.10
    43   5.6979      0.00     0.56       0.00     0.07
    44   5.7392      0.00    -0.12       0.00     0.25
    45   5.7633      0.00    -0.03       0.00    -0.12
    46   5.7634      0.00    -0.03       0.00    -0.22
    47   5.7634      0.00     0.02       0.00    -0.05
    48   5.7634      0.00    -0.09       0.00     0.04
    49   5.7688      0.00     0.02       0.00    -0.28
    50   5.8234      0.00    -0.11       0.00     0.02
    51   5.9276      0.00     0.16       0.00     0.04
    52   5.9276      0.00     0.07       0.00    -0.24
    53   5.9277      0.00     0.11       0.00    -0.09
    54   6.6593      0.00     0.23       0.00    -0.21
    55   6.6593      0.00     0.01       0.00    -0.46
    56   6.6594      0.00    -0.13       0.00    -0.05
    57   6.6594      0.00    -0.07       0.00    -0.10
    58   6.7600      0.00    -0.09       0.00    -0.12
    59   6.7985      0.00    -0.10       0.00     0.13
    60   7.4151      0.00     0.13       0.00     0.13
    61   7.6255      0.00    -0.14       0.00    -0.08
    62   7.6255      0.00    -0.08       0.00    -0.00
    63   7.6255      0.00     0.05       0.00     0.04
    64   7.6256      0.00     0.05       0.00     0.02
    65   7.7020      0.00    -0.02       0.00    -0.01
    66   7.7020      0.00    -0.11       0.00     0.10
    67   7.7020      0.00    -0.18       0.00     0.25
    68   7.7021      0.00     0.23       0.00     0.31
    69   7.7949      0.00    -0.13       0.00    -0.03
    70  10.7107      0.00    -0.01       0.00    -0.57
    71  10.7109      0.00     0.09       0.00     0.09
    72  10.7111      0.00    -0.16       0.00    -0.14
    73  11.7348      0.00    -0.09       0.00    -0.04
    74  11.7348      0.00    -0.10       0.00     0.05
    75  11.7349      0.00     0.19       0.00     0.09

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.

535987    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        46.495    46.495    46.495
ecceobj         0.230     0.230     0.230
incobj          7.686     7.686     7.686
qmin           34.961    34.897    34.943
qmax           58.832    58.751    59.022
amean          46.557    46.478    46.611
amin           46.034    45.612    46.166
amax           47.186    47.130    47.209
emean           0.230     0.229     0.231
emin            0.213     0.211     0.213
emax            0.248     0.248     0.250
imean           8.766     8.727     8.740
imin            7.650     7.659     7.645
imax            9.786     9.716     9.743
excite_mean     0.276     0.275     0.277
fracstop        1.000     1.000     1.000
cjmean          3.038     3.038     3.039

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       180.8     183.6     181.6
kozaiamp        180.0     180.0     180.0