Orbit Fit and Astrometric record for 16EB366

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: 16EB366   
# Created Tue Apr  1 01:10:44 2025
# Orbit generated from Bernstein formalism
# Fitting     28 observations of     28
# Arc:  90.78d
# First observation: 2016/03/07
#  Last observation: 2016/06/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000019   0.022822  -0.000008   0.000577   0.022297   0.000000
# Chi-squared of fit:    11.79 DOF:     50 RMS:  0.11
# Min/Max residuals:    -0.25    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.520377E-05  2.047899E-02  1.183473E-07  5.350643E-04  2.187663E-02 -7.833322E-03
# Covariance matrix:
  1.9352E-13 -7.6032E-12  2.1094E-14 -9.5967E-14 -6.9129E-13  1.1519E-10
 -7.6032E-12  3.9151E-09 -1.6027E-11  7.1522E-11  6.5113E-10 -7.9446E-09
  2.1094E-14 -1.6027E-11  1.8066E-13 -8.6277E-13 -2.7248E-12  2.0856E-11
 -9.5967E-14  7.1522E-11 -8.6277E-13  6.5018E-12  1.2146E-11 -9.5836E-11
 -6.9129E-13  6.5113E-10 -2.7248E-12  1.2146E-11  1.1189E-10 -5.9699E-10
  1.1519E-10 -7.9446E-09  2.0856E-11 -9.5836E-11 -5.9699E-10  1.6854E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.186270 -151.997981    0.648017    0.145161   -0.733310  2457455.105679
# Heliocentric elements and errors
Epoch:              2457450.5000  =  2016/03/03
Mean Anomaly:          318.00228 +/-     1.585
Argument of Peri:      168.36742 +/-     0.625
Long of Asc Node:      125.37560 +/-     0.039
Inclination:            11.11583 +/-     0.001
Eccentricity:         0.40722493 +/-    0.0209
Semi-Major Axis:     57.11067902 +/-    1.2543
Time of Perihelion: 2475841.1729 +/-     338.2
Perihelion:          33.85378669 +/-    1.4048
Aphelion:            80.36757135 +/-    2.1299
Period (y)              431.6027 +/-     14.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.56049827 +/-    0.0191
Ecliptic Y          -20.83494265 +/-    0.0102
Ecliptic Z            8.86790159 +/-    0.0043
Ecliptic XDOT         0.00206377 +/-    0.0000
Ecliptic YDOT        -0.00181225 +/-    0.0000
Ecliptic ZDOT        -0.00012448 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.45307884 +/-    0.0173
Geocenter to KBO     45.71087198 +/-    0.0221
# Hcoef:  7.49

The following table shows the complete astrometric record for 16EB366. 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 (16EB366) followed by the observatory code and reference code for the source of the astrometry.

2016 03  07.60489  13 59 56.06   -00 17 56.4   24.9g 16EB366   T09  C~89T9      
2016 03  07.61131  13 59 56.04   -00 17 56.3   24.6g 16EB366   T09  C~89T9      
2016 03  07.62907  13 59 56.01   -00 17 55.9   24.4g 16EB366   T09  C~89T9      
2016 03  07.64195  13 59 55.97   -00 17 55.4   25.4g 16EB366   T09  C~89T9      
2016 03  16.46294  13 59 30.02   -00 14 00.1   23.5z 16EB366   T09  C~89T9      
2016 03  16.49093  13 59 29.92   -00 13 59.6   23.6z 16EB366   T09  C~89T9      
2016 03  16.51046  13 59 29.86   -00 13 59.1   23.6z 16EB366   T09  C~89T9      
2016 03  16.51602  13 59 29.85   -00 13 58.7   23.4z 16EB366   T09  C~89T9      
2016 03  16.54079  13 59 29.77   -00 13 58.2   23.6z 16EB366   T09  C~89T9      
2016 03  16.54349  13 59 29.76   -00 13 58.1   23.4z 16EB366   T09  C~89T9      
2016 03  16.56535  13 59 29.68   -00 13 57.4   24.2z 16EB366   T09  C~89T9      
2016 03  16.57637  13 59 29.64   -00 13 57.2   23.5z 16EB366   T09  C~89T9      
2016 03  16.58986  13 59 29.59   -00 13 57.0   23.4z 16EB366   T09  C~89T9      
2016 04  15.47312  13 57 37.53   -00 00 48.6   24.2y 16EB366   T09  C~89T9      
2016 04  15.48536  13 57 37.48   -00 00 48.2   24.0y 16EB366   T09  C~89T9      
2016 04  15.50154  13 57 37.42   -00 00 47.9   24.6y 16EB366   T09  C~89T9      
2016 04  15.52858  13 57 37.32   -00 00 47.2   23.8y 16EB366   T09  C~89T9      
2016 04  15.53131  13 57 37.30   -00 00 47.2   23.4y 16EB366   T09  C~89T9      
2016 04  15.53940  13 57 37.28   -00 00 46.9   24.1y 16EB366   T09  C~89T9      
2016 06  05.36722  13 54 29.09   +00 12 17.5   24.2r 16EB366   T09  C~89T9      
2016 06  05.38217  13 54 29.02   +00 12 17.6   24.2r 16EB366   T09  C~89T9      
2016 06  05.39709  13 54 29.00   +00 12 17.6   24.0r 16EB366   T09  C~89T9      
2016 06  05.40134  13 54 28.98   +00 12 17.6   24.0r 16EB366   T09  C~89T9      
2016 06  05.41197  13 54 28.95   +00 12 17.6   24.0r 16EB366   T09  C~89T9      
2016 06  06.33647  13 54 26.46   +00 12 21.1   25.4g 16EB366   T09  C~89T9      
2016 06  06.35361  13 54 26.40   +00 12 21.5   24.8g 16EB366   T09  C~89T9      
2016 06  06.37484  13 54 26.34   +00 12 21.5   25.2g 16EB366   T09  C~89T9      
2016 06  06.38765  13 54 26.31   +00 12 21.8   25.1g 16EB366   T09  C~89T9      

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    -0.08       0.00     0.06
     2   0.0000     -0.32    -0.09      -0.01    -0.02
     3   0.0001     -0.88     0.20       0.20     0.02
     4   0.0001     -1.62     0.08       0.46     0.15
     5   0.0243   -448.71    -0.02      84.06     0.14
     6   0.0243   -450.29    -0.05      84.00    -0.14
     7   0.0244   -451.30     0.01      84.16    -0.15
     8   0.0244   -451.59     0.04      84.48     0.13
     9   0.0245   -452.88     0.11      84.52    -0.03
    10   0.0245   -453.06     0.08      84.56    -0.01
    11   0.0245   -454.43    -0.08      84.80     0.05
    12   0.0246   -455.06    -0.10      84.77    -0.07
    13   0.0246   -455.83    -0.13      84.70    -0.25
    14   0.1064  -2306.64    -0.15     232.49    -0.07
    15   0.1064  -2307.49    -0.17     232.60     0.03
    16   0.1065  -2308.44    -0.03     232.57    -0.01
    17   0.1066  -2310.09     0.14     232.69     0.09
    18   0.1066  -2310.37     0.04     232.59    -0.02
    19   0.1066  -2310.75     0.19     232.76     0.15
    20   0.2458  -5230.28     0.22     -24.35     0.08
    21   0.2458  -5231.30    -0.19     -24.62    -0.04
    22   0.2458  -5231.58     0.14     -24.73     0.02
    23   0.2458  -5231.86     0.03     -24.83    -0.04
    24   0.2459  -5232.28     0.04     -24.99    -0.08
    25   0.2484  -5268.50     0.17     -34.83    -0.21
    26   0.2485  -5269.49    -0.13     -34.78     0.04
    27   0.2485  -5270.33    -0.13     -35.09    -0.04
    28   0.2485  -5270.86    -0.14     -34.97     0.22

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.

16EB366    quality flag:1

Type:       SCATNEAR   REMOVED  SCATNEAR

axisobj        56.304    60.119    53.339
ecceobj         0.406     0.462     0.352
incobj         11.122    11.119    11.124
qmin           32.532    30.776    33.755
qmax           83.224    98.150    76.432
amean          56.862    60.173    53.806
amin           54.446    45.753    52.739
amax           58.242    65.263    55.526
emean           0.409     0.464     0.356
emin            0.373     0.324     0.336
emax            0.431     0.506     0.377
imean           8.885     6.220     8.625
imin            7.288     0.566     7.240
imax           10.439     9.834     9.898
excite_mean     0.438     0.478     0.386
fracstop        1.000     0.826     1.000
cjmean          3.007     2.986     3.030

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       183.2     181.8     182.3
kozaiamp        180.0     179.9     180.0