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: 16RO100
# Created Sun Apr 27 01:10:52 2025
# Orbit generated from Bernstein formalism
# Fitting 24 observations of 24
# Arc: 3.15y
# First observation: 2016/08/01
# Last observation: 2019/09/27
Preliminary a, adot, b, bdot, g, gdot:
-0.000163 0.031848 0.000002 0.002477 0.027136 0.000000
# Chi-squared of fit: 10.11 DOF: 42 RMS: 0.11
# Min/Max residuals: -0.25 0.25
# Exact a, adot, b, bdot, g, gdot:
1.793340E-05 3.150195E-02 1.717616E-06 2.435864E-03 2.734765E-02 -1.601249E-03
# Covariance matrix:
2.3028E-13 -6.5484E-13 2.3245E-15 -7.5559E-14 3.1494E-13 -8.7642E-12
-6.5484E-13 6.9006E-12 -5.9888E-14 7.5576E-13 -1.7175E-13 8.8653E-11
2.3245E-15 -5.9888E-14 8.2546E-14 -3.4993E-14 -8.8044E-15 -7.5046E-13
-7.5559E-14 7.5576E-13 -3.4993E-14 1.2185E-13 -4.0549E-14 9.8121E-12
3.1494E-13 -1.7175E-13 -8.8044E-15 -4.0549E-14 9.8614E-13 -4.4311E-12
-8.7642E-12 8.8653E-11 -7.5046E-13 9.8121E-12 -4.4311E-12 1.1503E-09
# lat0 lon0 xBary yBary zBary JD0
4.924762 -6.341284 0.705140 0.062795 -0.727482 2457601.960659
# Heliocentric elements and errors
Epoch: 2457600.5000 = 2016/07/31
Mean Anomaly: 349.36196 +/- 0.159
Argument of Peri: 65.92995 +/- 0.292
Long of Asc Node: 305.77003 +/- 0.003
Inclination: 6.60984 +/- 0.000
Eccentricity: 0.26731438 +/- 0.0002
Semi-Major Axis: 50.32325751 +/- 0.0120
Time of Perihelion: 2461453.6031 +/- 57.6
Perihelion: 36.87112706 +/- 0.0136
Aphelion: 63.77538795 +/- 0.0184
Period (y) 356.9943 +/- 0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.85253347 +/- 0.0013
Ecliptic Y -4.80756096 +/- 0.0002
Ecliptic Z 3.13923241 +/- 0.0001
Ecliptic XDOT 0.00017007 +/- 0.0000
Ecliptic YDOT 0.00314740 +/- 0.0000
Ecliptic ZDOT 0.00022918 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.29713992 +/- 0.0013
Geocenter to KBO 36.56620991 +/- 0.0013
# Hcoef: 9.24
The following table shows the complete astrometric record for 16RO100. 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 (16RO100) followed by the observatory code and reference code for the source of the astrometry.
2016 08 01.45987 23 28 55.25 +02 00 18.9 24.6z 16RO100 T09 C~83Ec 2016 08 01.47877 23 28 55.17 +02 00 18.4 25.3z 16RO100 T09 C~83Ec 2016 08 01.50310 23 28 55.11 +02 00 18.4 24.1z 16RO100 T09 C~83Ec 2016 08 01.52754 23 28 55.01 +02 00 17.9 24.3z 16RO100 T09 C~83Ec 2016 08 01.57371 23 28 54.87 +02 00 17.4 24.7z 16RO100 T09 C~83Ec 2016 08 01.58461 23 28 54.81 +02 00 17.1 24.6z 16RO100 T09 C~83Ec 2016 08 28.39121 23 27 05.18 +01 51 11.6 25.1g 16RO100 T09 C~83Ec 2016 08 28.40042 23 27 05.14 +01 51 11.4 24.9g 16RO100 T09 C~83Ec 2016 08 28.40907 23 27 05.12 +01 51 11.1 25.1g 16RO100 T09 C~83Ec 2016 08 28.41119 23 27 05.09 +01 51 11.2 25.2g 16RO100 T09 C~83Ec 2016 09 05.34434 23 26 27.27 +01 47 35.9 25.3i 16RO100 T09 C~83Ec 2016 09 05.39372 23 26 27.04 +01 47 34.4 24.7i 16RO100 T09 C~83Ec 2016 09 05.39642 23 26 27.02 +01 47 34.6 25.0i 16RO100 T09 C~83Ec 2016 09 07.38805 23 26 17.34 +01 46 37.7 25.0r 16RO100 T09 C~83Ec 2016 09 07.40976 23 26 17.23 +01 46 37.0 25.1r 16RO100 T09 C~83Ec 2016 09 07.42287 23 26 17.18 +01 46 36.8 25.2r 16RO100 T09 C~83Ec 2016 09 07.45624 23 26 17.01 +01 46 35.8 25.1r 16RO100 T09 C~83Ec 2016 09 07.45841 23 26 16.99 +01 46 35.8 25.2r 16RO100 T09 C~83Ec 2017 06 24.574465 23 36 22.22 +02 51 29.2 16RO100 T09 C~86u0 2019 09 27.25121 23 44 13.44 +04 09 58.4 25.3g 16RO100 T09 C~86u0 2019 09 27.27214 23 44 13.32 +04 09 57.9 25.4g 16RO100 T09 C~86u0 2019 09 27.288954 23 44 13.26 +04 09 57.0 16RO100 T09 C~86u0 2019 09 27.47425 23 44 12.33 +04 09 51.3 24.8g 16RO100 T09 C~86u0 2019 09 27.48691 23 44 12.27 +04 09 51.0 25.4g 16RO100 T09 C~86u0
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 0.06 0.00 -0.06
2 0.0001 -1.30 -0.25 0.02 -0.19
3 0.0001 -2.13 0.20 0.37 -0.02
4 0.0002 -3.70 -0.09 0.50 -0.07
5 0.0003 -5.83 0.22 0.88 -0.05
6 0.0003 -6.77 -0.16 0.96 -0.06
7 0.0737 -1732.04 -0.11 150.35 0.03
8 0.0738 -1732.67 -0.04 150.40 0.04
9 0.0738 -1733.06 0.22 150.24 -0.16
10 0.0738 -1733.43 0.01 150.51 0.10
11 0.0955 -2339.42 -0.09 177.27 0.06
12 0.0956 -2343.18 0.05 177.26 -0.12
13 0.0957 -2343.37 0.06 177.56 0.18
14 0.1011 -2499.19 -0.08 182.77 0.05
15 0.1012 -2500.99 -0.14 182.78 -0.00
16 0.1012 -2501.75 0.14 182.89 0.07
17 0.1013 -2504.49 0.06 182.99 0.06
18 0.1013 -2504.76 -0.04 183.10 0.17
19 0.8956 7369.64 -0.01 174.90 -0.00
20 3.1534 15735.81 0.06 1733.13 0.01
21 3.1535 15733.95 -0.11 1733.38 0.25
22 3.1535 15732.76 0.06 1732.90 -0.23
23 3.1540 15717.64 -0.04 1733.11 -0.06
24 3.1541 15716.69 0.03 1733.19 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.
16RO100 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 50.961 51.021 50.903 ecceobj 0.277 0.277 0.277 incobj 6.607 6.607 6.607 qmin 36.155 36.226 36.172 qmax 65.796 65.884 65.792 amean 50.652 50.718 50.643 amin 50.127 50.224 50.139 amax 51.271 51.315 51.300 emean 0.270 0.270 0.271 emin 0.257 0.258 0.259 emax 0.284 0.284 0.284 imean 8.179 8.186 8.206 imin 7.603 7.609 7.613 imax 8.950 8.941 8.949 excite_mean 0.305 0.306 0.306 fracstop 1.000 1.000 1.000 cjmean 3.066 3.067 3.066 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 176.3 176.3 176.3 kozaiamp 180.0 180.0 180.0