Orbit Fit and Astrometric record for 16SE58

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: 16SE58    
# Created Thu Dec  9 02:13:57 2021
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:   3.38y
# First observation: 2014/08/19
#  Last observation: 2018/01/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000235   0.022613  -0.000017  -0.003168   0.023879   0.000000
# Chi-squared of fit:     5.74 DOF:     30 RMS:  0.10
# Min/Max residuals:    -0.27    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.463680E-05  2.262635E-02 -2.066486E-06 -3.172218E-03  2.375825E-02  3.722376E-03
# Covariance matrix:
  7.0890E-13 -2.3717E-13 -4.9635E-15  2.2415E-14  2.0973E-13 -1.1278E-12
 -2.3717E-13  5.1403E-13  5.3498E-14 -1.0338E-13  2.5278E-13  8.6114E-12
 -4.9635E-15  5.3498E-14  4.6421E-13 -1.9716E-13  3.3609E-14  1.0867E-12
  2.2415E-14 -1.0338E-13 -1.9716E-13  1.1580E-13 -5.2309E-14 -2.1026E-12
  2.0973E-13  2.5278E-13  3.3609E-14 -5.2309E-14  3.8866E-13  5.0858E-12
 -1.1278E-12  8.6114E-12  1.0867E-12 -2.1026E-12  5.0858E-12  1.7498E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.933148   30.696538    0.916456   -0.104795   -0.422957  2456888.884168
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:           73.37087 +/-     0.063
Argument of Peri:      150.26535 +/-     0.030
Long of Asc Node:      150.94216 +/-     0.002
Inclination:            16.05981 +/-     0.000
Eccentricity:         0.13878629 +/-    0.0006
Semi-Major Axis:     43.43852521 +/-    0.0088
Time of Perihelion: 2435568.1077 +/-      17.1
Perihelion:          37.40985338 +/-    0.0262
Aphelion:            49.46719703 +/-    0.0270
Period (y)              286.2996 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.96809799 +/-    0.0009
Ecliptic Y           20.29111229 +/-    0.0005
Ecliptic Z          -10.13508412 +/-    0.0003
Ecliptic XDOT        -0.00105363 +/-    0.0000
Ecliptic YDOT         0.00240538 +/-    0.0000
Ecliptic ZDOT        -0.00045797 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.52238518 +/-    0.0008
Geocenter to KBO     42.09064642 +/-    0.0011
# Hcoef:  7.59

The following table shows the complete astrometric record for 16SE58. 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 (16SE58) followed by the observatory code and reference code for the source of the astrometry.

2014 08  19.38339  02 13 36.691  -01 21 56.40  24.0i 16SE58    W84  C~52Zn      
2014 12  16.15305  02 06 37.118  -02 07 06.63  23.5r 16SE58    W84  C~52Zn      
2015 01  14.06383  02 05 56.372  -02 02 01.69  24.3r 16SE58    W84  C~52Zn      
2015 12  15.15674  02 11 48.670  -01 50 45.41  23.9r 16SE58    W84  C~52Zn      
2016 09  27.52408  02 22 12.97   -01 09 18.6   24.3g 16SE58    568  C~2eAJ      
2016 09  27.58325  02 22 12.75   -01 09 20.5   24.1g 16SE58    568  C~2eAJ      
2016 09  28.47270  02 22 09.48   -01 09 48.4   24.6g 16SE58    568  C~2eAJ      
2016 09  28.53321  02 22 09.25   -01 09 50.3   24.3g 16SE58    568  C~2eAJ      
2016 09  29.48459  02 22 05.69   -01 10 20.2   24.4g 16SE58    568  C~2eAJ      
2016 09  29.60513  02 22 05.23   -01 10 24.0   24.3g 16SE58    568  C~2eAJ      
2016 10  27.21542  02 20 07.938  -01 23 40.32  24.3r 16SE58    W84  C~52Zn      
2016 11  29.17977  02 17 45.812  -01 33 19.96  24.0r 16SE58    W84  C~52Zn      
2016 12  05.18107  02 17 24.053  -01 34 03.18  23.4i 16SE58    W84  C~52Zn      
2016 12  05.18245  02 17 24.034  -01 34 03.13  24.4g 16SE58    W84  C~52Zn      
2017 10  29.27587  02 25 05.753  -01 08 01.21  23.8i 16SE58    W84  C~52Zn      
2017 10  29.27726  02 25 05.750  -01 08 01.09  23.7r 16SE58    W84  C~52Zn      
2017 10  29.27862  02 25 05.728  -01 08 01.24  23.8g 16SE58    W84  C~52Zn      
2018 01  05.06821  02 21 12.568  -01 15 53.50  24.2g 16SE58    W84  C~52Zn      

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    -0.01
     2   0.3252  -6840.62    -0.12    -397.48    -0.06
     3   0.4043  -7311.23     0.02      97.86    -0.04
     4   1.3218  -2113.47     0.08   -1070.78     0.03
     5   2.1085   7537.08    -0.03   -1941.00     0.04
     6   2.1087   7533.32    -0.03   -1941.65    -0.01
     7   2.1111   7477.61     0.01   -1951.04     0.07
     8   2.1113   7473.72     0.01   -1951.64     0.08
     9   2.1139   7413.23    -0.13   -1961.42     0.10
    10   2.1142   7405.44    -0.09   -1962.62     0.06
    11   2.1898   5478.13     0.21   -2107.42     0.03
    12   2.2801   3276.22    -0.08   -1921.36     0.24
    13   2.2965   2954.80     0.09   -1850.16    -0.27
    14   2.2965   2954.55    -0.09   -1850.02    -0.14
    15   3.1948  10002.46     0.04   -2758.65    -0.10
    16   3.1948  10002.46     0.15   -2758.52     0.03
    17   3.1948  10002.09    -0.12   -2758.55    -0.00
    18   3.3804   6549.57    -0.02   -2001.24    -0.05

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.

16SE58    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.801    43.828    43.774
ecceobj         0.143     0.144     0.142
incobj         16.023    16.024    16.023
qmin           36.541    36.475    36.597
qmax           50.698    50.842    50.637
amean          43.469    43.497    43.447
amin           43.104    43.136    43.076
amax           43.862    43.885    43.852
emean           0.139     0.140     0.139
emin            0.124     0.123     0.124
emax            0.156     0.159     0.155
imean          15.080    15.073    15.070
imin           14.428    14.404    14.465
imax           15.793    15.803    15.796
excite_mean     0.295     0.296     0.295
fracstop        1.000     1.000     1.000
cjmean          2.991     2.991     2.991

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       180.9     181.7     180.5
kozaiamp        180.0     180.0     180.0