Orbit Fit and Astrometric record for 16LF106

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: 16LF106   
# Created Sun Dec 22 02:10:43 2024
# Orbit generated from Bernstein formalism
# Fitting     19 observations of     19
# Arc:  90.78d
# First observation: 2016/03/07
#  Last observation: 2016/06/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000042   0.031483  -0.000010  -0.011031   0.028027   0.000000
# Chi-squared of fit:     9.66 DOF:     32 RMS:  0.13
# Min/Max residuals:    -0.26    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.638036E-05  2.840173E-02 -5.411522E-06 -1.113447E-02  2.758348E-02  8.032640E-03
# Covariance matrix:
  2.5251E-13 -4.7698E-12  1.4267E-14 -3.6755E-13 -7.7086E-14  1.0630E-10
 -4.7698E-12  4.8763E-09 -1.8775E-11  1.1132E-10  8.2525E-10 -6.2026E-09
  1.4267E-14 -1.8775E-11  2.4784E-13 -1.2609E-12 -3.1892E-12  2.2676E-11
 -3.6755E-13  1.1132E-10 -1.2609E-12  1.0692E-11  1.6651E-11 -5.2234E-10
 -7.7086E-14  8.2525E-10 -3.1892E-12  1.6651E-11  1.4457E-10 -2.4275E-10
  1.0630E-10 -6.2026E-09  2.2676E-11 -5.2234E-10 -2.4275E-10  1.4675E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.545261 -152.465226    0.642043    0.150782   -0.737419  2457455.094829
# Heliocentric elements and errors
Epoch:              2457450.5000  =  2016/03/03
Mean Anomaly:           31.96482 +/-     0.595
Argument of Peri:       89.87549 +/-     1.371
Long of Asc Node:       53.54876 +/-     0.059
Inclination:            23.75324 +/-     0.043
Eccentricity:         0.32916847 +/-    0.0124
Semi-Major Axis:     48.12130499 +/-    0.4498
Time of Perihelion: 2446624.3436 +/-     132.7
Perihelion:          32.28128862 +/-    0.6705
Aphelion:            63.96132137 +/-    0.8462
Period (y)              333.8215 +/-      4.68
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.46447656 +/-    0.0137
Ecliptic Y          -16.20150052 +/-    0.0072
Ecliptic Z            7.25569052 +/-    0.0032
Ecliptic XDOT         0.00041426 +/-    0.0000
Ecliptic YDOT        -0.00297011 +/-    0.0000
Ecliptic ZDOT        -0.00092323 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.00102569 +/-    0.0125
Geocenter to KBO     36.25358155 +/-    0.0158
# Hcoef:  9.01

The following table shows the complete astrometric record for 16LF106. 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 (16LF106) followed by the observatory code and reference code for the source of the astrometry.

2016 03  07.59404  13 58 43.48   +00 11 53.7   26.0g 16LF106   T09  C~89Tj      
2016 03  07.61131  13 58 43.42   +00 11 54.4   26.4g 16LF106   T09  C~89Tj      
2016 03  07.62696  13 58 43.37   +00 11 54.9   25.6g 16LF106   T09  C~89Tj      
2016 03  07.63119  13 58 43.35   +00 11 54.7   26.4g 16LF106   T09  C~89Tj      
2016 03  16.54079  13 58 09.50   +00 15 58.6   24.5z 16LF106   T09  C~89Tj      
2016 03  16.57367  13 58 09.38   +00 15 59.3   23.6z 16LF106   T09  C~89Tj      
2016 03  16.57637  13 58 09.36   +00 15 59.8   23.6z 16LF106   T09  C~89Tj      
2016 03  16.62672  13 58 09.15   +00 16 01.0   24.2z 16LF106   T09  C~89Tj      
2016 04  15.48536  13 55 45.70   +00 29 17.0   23.3y 16LF106   T09  C~89Tj      
2016 04  15.49884  13 55 45.63   +00 29 17.3   24.0y 16LF106   T09  C~89Tj      
2016 04  15.51772  13 55 45.53   +00 29 17.7   23.9y 16LF106   T09  C~89Tj      
2016 04  15.53131  13 55 45.47   +00 29 18.0   24.1y 16LF106   T09  C~89Tj      
2016 06  05.37292  13 51 47.20   +00 39 41.2   24.8r 16LF106   T09  C~89Tj      
2016 06  05.39921  13 51 47.12   +00 39 41.2   25.1r 16LF106   T09  C~89Tj      
2016 06  05.40134  13 51 47.09   +00 39 41.3   24.5r 16LF106   T09  C~89Tj      
2016 06  05.41197  13 51 47.07   +00 39 41.2   24.6r 16LF106   T09  C~89Tj      
2016 06  06.34225  13 51 43.91   +00 39 38.7   25.8g 16LF106   T09  C~89Tj      
2016 06  06.35147  13 51 43.89   +00 39 38.8   25.1g 16LF106   T09  C~89Tj      
2016 06  06.37272  13 51 43.81   +00 39 39.2   25.0g 16LF106   T09  C~89Tj      

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    -0.20
     2   0.0000     -1.09    -0.08       0.34     0.03
     3   0.0001     -1.97    -0.03       0.54     0.14
     4   0.0001     -2.18     0.01       0.25    -0.18
     5   0.0245   -563.32    -0.09      49.38     0.03
     6   0.0246   -565.25     0.24      49.40    -0.07
     7   0.0246   -565.71    -0.03      49.76     0.28
     8   0.0247   -569.08     0.05      49.78     0.10
     9   0.1065  -2863.44    -0.09      35.75    -0.02
    10   0.1065  -2864.53    -0.06      35.66    -0.03
    11   0.1066  -2866.07    -0.04      35.51    -0.08
    12   0.1066  -2867.02     0.14      35.47    -0.03
    13   0.2458  -6433.02     0.03    -641.69    -0.07
    14   0.2459  -6434.15     0.18    -642.11     0.05
    15   0.2459  -6434.60    -0.17    -642.18     0.03
    16   0.2459  -6434.85     0.10    -642.38     0.05
    17   0.2485  -6478.36    -0.04    -661.44    -0.26
    18   0.2485  -6478.68     0.08    -661.45    -0.08
    19   0.2485  -6479.95    -0.18    -661.50     0.31

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.

16LF106    quality flag:2

Type:           2:1E  SCATNEAR  SCATNEAR

axisobj        47.488    48.922    46.222
ecceobj         0.322     0.354     0.290
incobj         23.811    23.757    23.854
qmin           29.669    31.167    32.203
qmax           67.319    68.485    61.850
amean          47.796    49.245    46.523
amin           47.007    48.161    45.582
amax           48.773    50.125    47.382
emean           0.316     0.337     0.283
emin            0.229     0.310     0.252
emax            0.383     0.369     0.308
imean          23.087    23.673    23.086
imin           20.070    22.364    22.220
imax           26.316    24.385    23.869
excite_mean     0.507     0.524     0.484
fracstop        1.000     1.000     1.000
cjmean          2.825     2.817     2.840

libcent 0       180.0    -180.0    -180.0
libamp  0       168.0    -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       152.6     177.3     176.4
kozaiamp        180.0     179.9     180.0