Orbit Fit and Astrometric record for 16YB40

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: 16YB40    
# Created Thu Oct 31 01:10:30 2024
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   3.07y
# First observation: 2016/12/23
#  Last observation: 2020/01/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000026   0.016538   0.000001   0.007587   0.020300   0.000000
# Chi-squared of fit:    12.44 DOF:     54 RMS:  0.11
# Min/Max residuals:    -0.29    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.337733E-05  1.657457E-02  5.845425E-06  7.613165E-03  2.028201E-02  3.392803E-03
# Covariance matrix:
  2.0500E-13  1.2758E-13  1.6446E-14  7.4941E-14  5.1901E-13  3.5114E-12
  1.2758E-13  1.7586E-12 -2.1092E-14  8.3985E-13  9.5170E-13  3.9224E-11
  1.6446E-14 -2.1092E-14  5.9293E-14 -3.5022E-14  4.7060E-14 -4.9495E-13
  7.4941E-14  8.3985E-13 -3.5022E-14  4.9297E-13  4.7184E-13  1.9558E-11
  5.1901E-13  9.5170E-13  4.7060E-14  4.7184E-13  1.9299E-12  2.2073E-11
  3.5114E-12  3.9224E-11 -4.9495E-13  1.9558E-11  2.2073E-11  9.1344E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.667892  150.255768    0.843127   -0.077261   -0.508116  2457745.965889
# Heliocentric elements and errors
Epoch:              2457740.5000  =  2016/12/18
Mean Anomaly:           61.12935 +/-     0.099
Argument of Peri:      259.44370 +/-     0.082
Long of Asc Node:      167.49980 +/-     0.001
Inclination:            25.75457 +/-     0.001
Eccentricity:         0.17573355 +/-    0.0017
Semi-Major Axis:     52.90242638 +/-    0.0382
Time of Perihelion: 2433875.6278 +/-      28.7
Perihelion:          43.60569521 +/-    0.0948
Aphelion:            62.19915755 +/-    0.1001
Period (y)              384.7881 +/-      0.42
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.35158546 +/-    0.0029
Ecliptic Y           25.16474971 +/-    0.0017
Ecliptic Z           -7.43032488 +/-    0.0005
Ecliptic XDOT        -0.00163507 +/-    0.0000
Ecliptic YDOT        -0.00164785 +/-    0.0000
Ecliptic ZDOT         0.00094688 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.82099103 +/-    0.0026
Geocenter to KBO     49.30477765 +/-    0.0034
# Hcoef:  7.59

The following table shows the complete astrometric record for 16YB40. 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 (16YB40) followed by the observatory code and reference code for the source of the astrometry.

2016 12  23.46510  09 57 08.47   +03 15 27.1   24.0z 16YB40    T09  C~7zpU      
2016 12  23.51489  09 57 08.36   +03 15 27.4   25.0z 16YB40    T09  C~7zpU      
2016 12  23.58584  09 57 08.23   +03 15 27.4   24.6z 16YB40    T09  C~7zpU      
2016 12  25.51058  09 57 04.36   +03 15 38.9   24.9r 16YB40    T09  C~7zpU      
2016 12  25.53845  09 57 04.31   +03 15 39.0   25.0r 16YB40    T09  C~7zpU      
2016 12  25.58308  09 57 04.22   +03 15 39.4   24.7i 16YB40    T09  C~7zpU      
2016 12  25.60536  09 57 04.16   +03 15 39.7   24.7i 16YB40    T09  C~7zpU      
2017 01  21.42903  09 55 47.87   +03 21 10.9   24.5z 16YB40    T09  C~7zpU      
2017 01  21.46896  09 55 47.72   +03 21 11.5   24.1z 16YB40    T09  C~7zpU      
2017 01  21.47486  09 55 47.71   +03 21 11.7   24.1z 16YB40    T09  C~7zpU      
2017 01  21.50089  09 55 47.62   +03 21 12.1   24.1z 16YB40    T09  C~7zpU      
2017 01  21.52708  09 55 47.52   +03 21 12.7   23.7z 16YB40    T09  C~7zpU      
2017 01  21.54935  09 55 47.46   +03 21 13.1   24.4z 16YB40    T09  C~7zpU      
2017 01  21.58671  09 55 47.33   +03 21 13.7   24.4z 16YB40    T09  C~7zpU      
2017 01  23.35517  09 55 41.12   +03 21 46.3   24.8r 16YB40    T09  C~7zpU      
2017 01  23.37982  09 55 41.03   +03 21 46.7   24.4r 16YB40    T09  C~7zpU      
2017 01  23.40271  09 55 40.96   +03 21 47.2   24.6r 16YB40    T09  C~7zpU      
2017 01  23.48803  09 55 40.64   +03 21 48.9   24.4i 16YB40    T09  C~7zpU      
2017 01  23.50979  09 55 40.56   +03 21 49.4   24.2i 16YB40    T09  C~7zpU      
2017 01  23.53733  09 55 40.46   +03 21 49.7   24.5i 16YB40    T09  C~7zpU      
2017 01  23.57255  09 55 40.33   +03 21 50.4   24.2i 16YB40    T09  C~7zpU      
2017 01  23.58131  09 55 40.31   +03 21 50.5   24.4i 16YB40    T09  C~7zpU      
2017 01  30.40627  09 55 15.41   +03 24 06.8   24.1i 16YB40    T09  C~7zpU      
2017 01  30.45035  09 55 15.23   +03 24 07.8   23.9i 16YB40    T09  C~7zpU      
2017 01  30.49455  09 55 15.06   +03 24 08.8   24.3z 16YB40    T09  C~7zpU      
2017 01  30.52066  09 55 14.97   +03 24 09.2   24.5z 16YB40    T09  C~7zpU      
2017 01  30.55762  09 55 14.84   +03 24 09.9   24.0z 16YB40    T09  C~7zpU      
2019 02  05.417348 10 03 17.70   +03 35 36.8         16YB40    T09  C~83Ek      
2020 01  01.472874 10 09 16.31   +03 30 28.3         16YB40    T09  C~83Ek      
2020 01  19.381951 10 08 27.07   +03 34 27.0         16YB40    T09  C~83Ek      

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    -0.09       0.00     0.02
     2   0.0001     -1.65    -0.25      -0.29    -0.00
     3   0.0003     -3.48     0.06      -0.96    -0.29
     4   0.0056    -61.83    -0.05     -10.22    -0.00
     5   0.0057    -62.57     0.12     -10.39    -0.02
     6   0.0058    -63.97     0.16     -10.48     0.12
     7   0.0059    -64.92    -0.06     -10.51     0.21
     8   0.0793  -1251.43     0.02     -94.75    -0.06
     9   0.0794  -1253.75    -0.06     -94.96    -0.22
    10   0.0794  -1253.96     0.06     -94.83    -0.07
    11   0.0795  -1255.36     0.12     -94.92    -0.12
    12   0.0796  -1256.97    -0.03     -94.87    -0.04
    13   0.0796  -1257.95     0.24     -94.81     0.06
    14   0.0797  -1259.99     0.30     -94.92     0.00
    15   0.0846  -1358.52    -0.02     -96.46     0.04
    16   0.0846  -1359.92    -0.02     -96.55    -0.03
    17   0.0847  -1361.08     0.13     -96.44     0.10
    18   0.0849  -1366.16    -0.08     -96.51     0.13
    19   0.0850  -1367.46    -0.13     -96.45     0.21
    20   0.0851  -1368.97    -0.06     -96.69     0.01
    21   0.0852  -1371.04    -0.11     -96.70     0.03
    22   0.0852  -1371.35     0.07     -96.71     0.03
    23   0.1039  -1768.36     0.01     -97.64    -0.01
    24   0.1040  -1771.23    -0.18     -97.63    -0.01
    25   0.1041  -1773.97    -0.23     -97.57     0.05
    26   0.1042  -1775.37    -0.04     -97.66    -0.05
    27   0.1043  -1777.44     0.14     -97.68    -0.07
    28   2.1190   4767.54     0.00    3052.02    -0.02
    29   3.0226   9916.11    -0.03    4635.32     0.09
    30   3.0716   9140.09     0.02    4601.46    -0.07

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.

16YB40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        52.837    52.954    52.722
ecceobj         0.181     0.185     0.176
incobj         25.857    25.855    25.858
qmin           42.712    42.604    42.889
qmax           63.262    63.680    62.919
amean          52.766    52.879    52.655
amin           52.281    52.403    52.183
amax           53.304    53.426    53.180
emean           0.174     0.176     0.170
emin            0.161     0.160     0.157
emax            0.187     0.192     0.183
imean          25.178    25.206    25.171
imin           24.937    24.930    24.939
imax           25.468    25.546    25.443
excite_mean     0.460     0.461     0.458
fracstop        1.000     1.000     1.000
cjmean          2.931     2.930     2.931

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       179.4     175.3     180.3
kozaiamp        180.0     180.0     180.0