Orbit Fit and Astrometric record for 16RP105

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: 16RP105   
# Created Tue Apr  1 01:10:51 2025
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:   3.22y
# First observation: 2016/07/07
#  Last observation: 2019/09/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000179   0.022020   0.000018  -0.002539   0.022748   0.000000
# Chi-squared of fit:    13.45 DOF:     30 RMS:  0.15
# Min/Max residuals:    -0.35    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.476457E-05  2.167307E-02 -9.392598E-08 -2.491353E-03  2.272494E-02 -1.745583E-03
# Covariance matrix:
  5.1291E-13 -1.0838E-12 -4.5455E-14  1.7057E-13  4.5232E-13 -2.3714E-11
 -1.0838E-12  4.7457E-12  1.3961E-13 -7.2624E-13 -3.7921E-13  1.0107E-10
 -4.5455E-14  1.3961E-13  1.1130E-13 -6.8742E-14 -4.1423E-14  3.1262E-12
  1.7057E-13 -7.2624E-13 -6.8742E-14  1.9553E-13  7.7866E-14 -1.5802E-11
  4.5232E-13 -3.7921E-13 -4.1423E-14  7.7866E-14  7.9944E-13 -1.0787E-11
 -2.3714E-11  1.0107E-10  3.1262E-12 -1.5802E-11 -1.0787E-11  2.1990E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.677664   -5.945870    0.942119    0.030938   -0.376759  2457577.109228
# Heliocentric elements and errors
Epoch:              2457570.5000  =  2016/07/01
Mean Anomaly:          296.18551 +/-     0.234
Argument of Peri:      219.75520 +/-     0.472
Long of Asc Node:      208.21163 +/-     0.003
Inclination:             7.97456 +/-     0.001
Eccentricity:         0.10696880 +/-    0.0020
Semi-Major Axis:     46.11249306 +/-    0.0086
Time of Perihelion: 2477844.6727 +/-      74.3
Perihelion:          41.17989500 +/-    0.0945
Aphelion:            51.04509111 +/-    0.0947
Period (y)              313.1382 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.89675136 +/-    0.0017
Ecliptic Y           -5.52147624 +/-    0.0002
Ecliptic Z            3.58861543 +/-    0.0001
Ecliptic XDOT         0.00008737 +/-    0.0000
Ecliptic YDOT         0.00260924 +/-    0.0000
Ecliptic ZDOT        -0.00031632 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.38794477 +/-    0.0017
Geocenter to KBO     44.00451457 +/-    0.0017
# Hcoef:  8.98

The following table shows the complete astrometric record for 16RP105. 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 (16RP105) followed by the observatory code and reference code for the source of the astrometry.

2016 07  07.608439 23 30 45.63   +01 56 03.3         16RP105   T09  C~89UB      
2016 08  01.492291 23 29 54.58   +01 52 21.1         16RP105   T09  C~89UB      
2016 08  01.50310  23 29 54.52   +01 52 20.6   24.9z 16RP105   T09  C~8COe      
2016 08  01.527529 23 29 54.46   +01 52 20.9         16RP105   T09  C~89UB      
2016 08  01.551992 23 29 54.39   +01 52 20.3         16RP105   T09  C~89UB      
2016 08  28.39121  23 28 20.45   +01 43 10.2   25.6g 16RP105   T09  C~89UB      
2016 08  28.40042  23 28 20.41   +01 43 09.9   25.8g 16RP105   T09  C~89UB      
2016 08  28.41778  23 28 20.34   +01 43 09.2   25.5g 16RP105   T09  C~89UB      
2016 09  05.344329 23 27 48.08   +01 39 42.2         16RP105   T09  C~89UB      
2016 09  05.409991 23 27 47.80   +01 39 40.5         16RP105   T09  C~89UB      
2016 09  07.38805  23 27 39.58   +01 38 46.5   25.4r 16RP105   T09  C~89UB      
2016 09  07.41191  23 27 39.49   +01 38 45.8   25.6r 16RP105   T09  C~89UB      
2016 09  07.45841  23 27 39.30   +01 38 45.0   25.6r 16RP105   T09  C~89UB      
2016 09  07.48918  23 27 39.15   +01 38 43.8   25.7r 16RP105   T09  C~89UB      
2017 06  24.525466 23 35 40.21   +02 17 16.9         16RP105   T09  C~89UB      
2017 06  24.574465 23 35 40.19   +02 17 17.4         16RP105   T09  C~89UB      
2019 09  27.368178 23 40 57.73   +02 35 27.4         16RP105   T09  C~89UB      
2019 09  27.461551 23 40 57.33   +02 35 24.6         16RP105   T09  C~89UB      

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     0.07       0.00    -0.34
     2   0.0681   -790.77     0.17      98.97    -0.06
     3   0.0682   -791.79    -0.35      98.86    -0.20
     4   0.0682   -792.50     0.08      99.49     0.34
     5   0.0683   -793.70     0.02      99.36     0.12
     6   0.1418  -2304.90     0.01     152.09     0.19
     7   0.1418  -2305.57    -0.06     152.05     0.15
     8   0.1418  -2306.81    -0.15     151.82    -0.10
     9   0.1635  -2833.01     0.09     153.41    -0.12
    10   0.1637  -2837.54     0.07     153.51    -0.03
    11   0.1691  -2972.12    -0.13     152.77    -0.06
    12   0.1692  -2973.64     0.00     152.66    -0.17
    13   0.1693  -2976.57     0.29     153.05     0.23
    14   0.1694  -2979.11    -0.12     152.84     0.02
    15   0.9635   4560.12     0.07    -576.80    -0.14
    16   0.9636   4560.04    -0.06    -576.22     0.19
    17   3.2218   9368.51     0.04   -1453.98    -0.01
    18   3.2220   9361.88    -0.05   -1454.19    -0.02

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.

16RP105    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.576    46.596    46.555
ecceobj         0.112     0.112     0.112
incobj          7.940     7.940     7.940
qmin           40.463    40.418    40.409
qmax           52.617    52.621    52.636
amean          46.383    46.403    46.363
amin           45.998    46.016    45.973
amax           46.798    46.833    46.787
emean           0.112     0.112     0.113
emin            0.101     0.100     0.101
emax            0.125     0.125     0.125
imean           8.692     8.689     8.694
imin            8.360     8.364     8.359
imax            9.031     9.024     9.046
excite_mean     0.188     0.188     0.189
fracstop        1.000     1.000     1.000
cjmean          3.087     3.087     3.087

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       187.6     187.9     187.0
kozaiamp        180.0     180.0     180.0