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: 16LP88
# Created Wed Jul 17 01:11:18 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 12 observations of 12
# Arc: 6.22y
# First observation: 2016/03/06
# Last observation: 2022/05/25
# Chi-squared of fit: 1.98 DOF: 18 RMS: 0.07
# Min/Max residuals: -0.27 0.09
# Exact a, adot, b, bdot, g, gdot:
1.262862E-05 1.616019E-02 -5.624561E-06 -7.591595E-03 2.049235E-02 -1.607516E-03
# Covariance matrix:
6.3957E-13 5.0806E-13 8.5789E-14 -3.2000E-13 5.4032E-13 6.3872E-12
5.0806E-13 1.3389E-11 2.0897E-12 -7.7426E-12 4.4522E-12 1.5356E-10
8.5789E-14 2.0897E-12 4.8841E-13 -1.2420E-12 6.9728E-13 2.4011E-11
-3.2000E-13 -7.7426E-12 -1.2420E-12 4.5091E-12 -2.5852E-12 -8.8961E-11
5.4032E-13 4.4522E-12 6.9728E-13 -2.5852E-12 1.7682E-12 5.1303E-11
6.3872E-12 1.5356E-10 2.4011E-11 -8.8961E-11 5.1303E-11 1.7644E-09
# lat0 lon0 xBary yBary zBary JD0
0.471199 -116.591711 0.965786 0.001930 -0.213213 2457453.886778
# Heliocentric elements and errors
Epoch: 2457454.5000 = 2016/03/07
Mean Anomaly: 251.38441 +/- 0.420
Argument of Peri: 299.37635 +/- 0.405
Long of Asc Node: 63.27445 +/- 0.000
Inclination: 25.17446 +/- 0.000
Eccentricity: 0.11505939 +/- 0.0021
Semi-Major Axis: 46.78310972 +/- 0.0091
Time of Perihelion: 2492717.7013 +/- 138.4
Perihelion: 41.40027376 +/- 0.0975
Aphelion: 52.16594568 +/- 0.0977
Period (y) 319.9940 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.80530130 +/- 0.0014
Ecliptic Y -43.39574397 +/- 0.0028
Ecliptic Z 0.40102670 +/- 0.0000
Ecliptic XDOT 0.00202292 +/- 0.0000
Ecliptic YDOT -0.00078885 +/- 0.0000
Ecliptic ZDOT -0.00101599 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.02489268 +/- 0.0026
Geocenter to KBO 48.79879445 +/- 0.0032
# Hcoef: 6.77
The following table shows the complete astrometric record for 16LP88. 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 (16LP88) followed by the observatory code and reference code for the source of the astrometry.
2016 03 06.385989 16 05 54.89 -20 22 25.5 23.8V 16LP88 W84 C~82n2 2016 03 06.388067 16 05 54.89 -20 22 25.4 16LP88 W84 C~82n2 2016 06 09.345421 16 00 40.817 -20 14 27.06 23.7r 16LP88 568 C~4qZm 2016 06 09.413008 16 00 40.524 -20 14 26.55 23.7r 16LP88 568 C~4qZm 2016 06 10.332777 16 00 36.599 -20 14 19.57 23.8r 16LP88 568 C~4qZm 2016 06 10.409216 16 00 36.268 -20 14 19.00 23.8r 16LP88 568 C~4qZm 2016 08 26.261661 15 57 53.54 -20 12 33.1 23.6r 16LP88 T09 C~82n2 2016 08 27.232478 15 57 54.31 -20 12 40.1 23.5r 16LP88 T09 C~82n2 2016 08 27.259407 15 57 54.35 -20 12 40.2 23.5r 16LP88 T09 C~82n2 2016 08 27.285151 15 57 54.37 -20 12 40.4 23.5r 16LP88 T09 C~82n2 2022 05 25.131925 16 24 04.82 -23 56 31.8 16LP88 W84 C~82n2 2022 05 25.138792 16 24 04.78 -23 56 31.7 16LP88 W84 C~82n2
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 -0.04 0.00 -0.04
2 0.0000 0.00 -0.03 0.00 0.06
3 0.2600 0.00 0.03 0.00 0.01
4 0.2602 0.00 0.06 0.00 0.01
5 0.2627 0.00 0.05 0.00 0.03
6 0.2629 0.00 0.05 0.00 0.03
7 0.4733 0.00 0.09 0.00 0.04
8 0.4760 0.00 -0.27 0.00 -0.10
9 0.4760 0.00 0.01 0.00 -0.01
10 0.4761 0.00 0.00 0.00 -0.03
11 6.2170 0.00 0.06 0.00 -0.03
12 6.2170 0.00 -0.05 0.00 0.03
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.
16LP88 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.410 46.410 46.410 ecceobj 0.123 0.123 0.123 incobj 25.286 25.286 25.286 qmin 40.487 40.489 40.500 qmax 53.216 53.231 53.205 amean 46.707 46.707 46.707 amin 46.325 46.329 46.323 amax 47.118 47.118 47.124 emean 0.117 0.117 0.117 emin 0.106 0.105 0.105 emax 0.130 0.130 0.130 imean 23.997 23.997 23.997 imin 23.712 23.712 23.714 imax 24.284 24.288 24.280 excite_mean 0.423 0.423 0.423 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 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 173.7 173.7 173.8 kozaiamp 180.0 180.0 180.0