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 Mon Apr 28 01:10:53 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