Orbit Fit and Astrometric record for 20BE102

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: 20BE102   
# Created Sat Jan 11 02:11:16 2025
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   2.21y
# First observation: 2020/01/24
#  Last observation: 2022/04/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000005   0.003701   0.000000  -0.000089   0.009065   0.000000
# Chi-squared of fit:     6.31 DOF:     20 RMS:  0.12
# Min/Max residuals:    -0.18    0.34
# Exact a, adot, b, bdot, g, gdot:
  6.917445E-06  3.703997E-03  7.109238E-08 -8.893919E-05  9.070877E-03 -1.239101E-03
# Covariance matrix:
  4.8801E-13 -3.5414E-13 -1.9631E-15  3.4790E-15 -2.2419E-13 -1.3423E-11
 -3.5414E-13  1.8138E-12  4.3089E-14 -9.4620E-14  4.0886E-12  3.2704E-10
 -1.9631E-15  4.3089E-14  4.8017E-13 -2.6236E-13  1.1007E-13  9.4825E-12
  3.4790E-15 -9.4620E-14 -2.6236E-13  1.9067E-13 -2.4475E-13 -2.2116E-11
 -2.2419E-13  4.0886E-12  1.1007E-13 -2.4475E-13  1.0305E-11  8.4080E-10
 -1.3423E-11  3.2704E-10  9.4825E-12 -2.2116E-11  8.4080E-10  7.4264E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.274375  143.880631    0.344845    0.085582   -0.926968  2458872.922331
# Heliocentric elements and errors
Epoch:              2458870.5000  =  2020/01/22
Mean Anomaly:          227.01762 +/-     4.709
Argument of Peri:      268.07413 +/-     3.343
Long of Asc Node:       39.00187 +/-     0.074
Inclination:             5.40662 +/-     0.002
Eccentricity:         0.56001917 +/-    0.0098
Semi-Major Axis:     75.02201368 +/-    1.2238
Time of Perihelion: 2546544.9605 +/-    2244.1
Perihelion:          33.00824810 +/-    0.9138
Aphelion:           117.03577925 +/-    2.0470
Period (y)              649.8173 +/-     15.90
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -89.22130086 +/-    0.0314
Ecliptic Y           65.52898242 +/-    0.0229
Ecliptic Z           10.13408025 +/-    0.0036
Ecliptic XDOT        -0.00035188 +/-    0.0001
Ecliptic YDOT        -0.00111894 +/-    0.0000
Ecliptic ZDOT        -0.00006134 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO  111.16288790 +/-    0.0286
Geocenter to KBO    110.24291975 +/-    0.0390
# Hcoef:  5.07

The following table shows the complete astrometric record for 20BE102. 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 (20BE102) followed by the observatory code and reference code for the source of the astrometry.

2020 01  24.42153  09 52 08.049  +18 31 53.07  25.5r 20BE102   568  C~5fur      
2020 01  24.66304  09 52 07.597  +18 31 55.53  25.6r 20BE102   568  C~5fur      
2021 01  18.26854  09 53 07.669  +18 26 21.17  25.4r 20BE102   304  C~5fur      
2021 01  18.32667  09 53 07.569  +18 26 21.76  25.5r 20BE102   304  C~5fur      
2021 01  19.31113  09 53 05.840  +18 26 31.85  25.5r 20BE102   304  C~5fur      
2021 04  12.04879  09 50 39.306  +18 37 50.35  25.4r 20BE102   304  C~5fur      
2021 04  12.11902  09 50 39.245  +18 37 50.74  25.3r 20BE102   304  C~5fur      
2022 03  07.10340  09 52 24.396  +18 29 47.04  25.4r 20BE102   304  C~5fur      
2022 03  07.11405  09 52 24.380  +18 29 46.82  25.5r 20BE102   304  C~5fur      
2022 03  07.20158  09 52 24.209  +18 29 47.52  25.4r 20BE102   304  C~5fur      
2022 04  08.09271  09 51 33.675  +18 33 04.60  25.4r 20BE102   304  C~5fur      
2022 04  08.15811  09 51 33.580  +18 33 04.74  25.5r 20BE102   304  C~5fur      
2022 04  09.07916  09 51 32.513  +18 33 08.06  25.3r 20BE102   304  C~5fur      

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    -0.10       0.00    -0.05
     2   0.0007     -6.88     0.01       0.14    -0.11
     3   0.9852    910.47    -0.16     -24.20     0.15
     4   0.9854    908.93    -0.08     -24.13     0.15
     5   0.9881    882.36     0.34     -23.01     0.05
     6   1.2146  -1308.28    -0.03     -90.12    -0.16
     7   1.2148  -1309.23     0.10     -90.04     0.10
     8   2.1155    261.47    -0.11     -39.73     0.14
     9   2.1155    261.33     0.05     -40.01    -0.13
    10   2.1158    258.81     0.03     -40.18    -0.18
    11   2.2031   -484.20     0.05     -98.18     0.05
    12   2.2032   -485.52    -0.12     -98.50    -0.11
    13   2.2058   -500.92     0.03    -100.51     0.10

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.

20BE102    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        75.045    79.982    72.752
ecceobj         0.555     0.592     0.536
incobj          5.415     5.418     5.413
qmin           32.569    31.980    33.204
qmax          138.538   144.197   118.954
amean          74.395    79.848    73.377
amin           65.870    72.660    69.379
amax           86.107    88.630    76.509
emean           0.548     0.587     0.536
emin            0.485     0.550     0.510
emax            0.609     0.628     0.556
imean           5.605     5.775     5.173
imin            4.381     4.653     4.364
imax            7.174     7.079     6.061
excite_mean     0.556     0.596     0.544
fracstop        1.000     1.000     1.000
cjmean          3.019     2.999     3.035

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       200.9     175.7     183.8
kozaiamp        180.0     180.0     180.0