Orbit Fit and Astrometric record for 16EB367

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: 16EB367   
# Created Tue Apr  1 01:10:44 2025
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:  38.92d
# First observation: 2016/03/07
#  Last observation: 2016/04/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.018790  -0.000002  -0.000706   0.020818   0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit:     4.85 DOF:     21 RMS:  0.11
# Min/Max residuals:    -0.28    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.298041E-05  1.692695E-02 -2.838334E-07 -5.773426E-04  2.040750E-02  7.105815E-04
# Covariance matrix:
  5.0172E-13  1.7736E-10 -1.8775E-13 -1.2337E-11  3.9711E-11  4.4919E-09
  1.7736E-10  2.4734E-07 -2.2536E-10 -1.7254E-08  5.0149E-08  3.8906E-06
 -1.8775E-13 -2.2536E-10  4.2181E-13  1.3283E-11 -4.6195E-11 -3.7972E-09
 -1.2337E-11 -1.7254E-08  1.3283E-11  1.2622E-09 -3.4950E-09 -2.6931E-07
  3.9711E-11  5.0149E-08 -4.6195E-11 -3.4950E-09  1.0237E-08  8.2323E-07
  4.4919E-09  3.8906E-06 -3.7972E-09 -2.6931E-07  8.2323E-07  7.8704E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.975969 -152.479365    0.641857    0.143478   -0.739036  2457455.094829
# Heliocentric elements and errors
Epoch:              2457450.5000  =  2016/03/03
Mean Anomaly:          164.72703 +/-   202.115
Argument of Peri:      291.30804 +/-   201.804
Long of Asc Node:      107.17885 +/-     0.321
Inclination:            10.95856 +/-     0.011
Eccentricity:         0.12923703 +/-    0.0533
Semi-Major Axis:     44.19580593 +/-    2.7401
Time of Perihelion: 2408344.7460 +/-   60078.0
Perihelion:          38.48407137 +/-    3.3534
Aphelion:            49.90754049 +/-    3.8893
Period (y)              293.8189 +/-     27.32
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.62954562 +/-    0.2115
Ecliptic Y          -22.00894269 +/-    0.1102
Ecliptic Z            9.32977459 +/-    0.0463
Ecliptic XDOT         0.00095310 +/-    0.0010
Ecliptic YDOT        -0.00207098 +/-    0.0006
Ecliptic ZDOT        -0.00005788 +/-    0.0002
# Distances at JD0 (AU)
Heliocenter to KBO   49.74912565 +/-    0.1920
Geocenter to KBO     49.00158805 +/-    0.2429
# Hcoef:  6.67

The following table shows the complete astrometric record for 16EB367. 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 (16EB367) followed by the observatory code and reference code for the source of the astrometry.

2016 03  07.59404  13 57 52.17   -00 19 46.4   24.6g 16EB367   T09  C~89TC      
2016 03  07.60489  13 57 52.12   -00 19 46.1   24.4g 16EB367   T09  C~89TC      
2016 03  07.62696  13 57 52.09   -00 19 45.4   24.4g 16EB367   T09  C~89TC      
2016 03  07.64195  13 57 52.05   -00 19 45.3   24.6g 16EB367   T09  C~89TC      
2016 03  16.46294  13 57 26.81   -00 16 07.4   23.3z 16EB367   T09  C~89TC      
2016 03  16.51602  13 57 26.64   -00 16 05.9   23.3z 16EB367   T09  C~89TC      
2016 03  16.54079  13 57 26.57   -00 16 05.4   23.5z 16EB367   T09  C~89TC      
2016 03  16.62672  13 57 26.30   -00 16 03.2   23.5z 16EB367   T09  C~89TC      
2016 03  16.63751  13 57 26.26   -00 16 03.0   23.3z 16EB367   T09  C~89TC      
2016 04  15.46969  13 55 38.94   -00 03 55.0   23.2y 16EB367   T09  C~89TC      
2016 04  15.48536  13 55 38.86   -00 03 54.7   22.9y 16EB367   T09  C~89TC      
2016 04  15.49884  13 55 38.80   -00 03 54.2   23.0y 16EB367   T09  C~89TC      
2016 04  15.51502  13 55 38.74   -00 03 54.0   23.0y 16EB367   T09  C~89TC      

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     0.03       0.00    -0.03
     2   0.0000     -0.81    -0.28       0.02    -0.11
     3   0.0001     -1.48     0.08       0.51     0.20
     4   0.0001     -2.07     0.17       0.39    -0.05
     5   0.0243   -433.20    -0.00      70.73    -0.08
     6   0.0244   -436.11    -0.10      71.23     0.07
     7   0.0245   -437.27     0.06      71.33    -0.00
     8   0.0247   -441.84     0.05      71.96     0.05
     9   0.0248   -442.47    -0.01      71.93    -0.05
    10   0.1064  -2205.67     0.22     185.20     0.06
    11   0.1065  -2206.90    -0.01     185.06    -0.08
    12   0.1065  -2207.92    -0.17     185.21     0.07
    13   0.1066  -2208.83    -0.05     185.08    -0.06

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.

16EB367    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0