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: 16RL82 # Created Sat Mar 30 01:18:55 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 3.86y # First observation: 2015/01/19 # Last observation: 2018/11/29 Preliminary a, adot, b, bdot, g, gdot: -0.000711 0.029865 -0.000135 0.010006 0.027513 0.000000 # Chi-squared of fit: 4.08 DOF: 16 RMS: 0.11 # Min/Max residuals: -0.19 0.19 # Exact a, adot, b, bdot, g, gdot: 1.712827E-05 2.854139E-02 6.022990E-06 9.571545E-03 2.633284E-02 -4.536757E-03 # Covariance matrix: 1.4058E-12 -8.4825E-13 9.1169E-14 -1.6392E-13 -3.6533E-13 -4.2082E-12 -8.4825E-13 8.3735E-13 -1.2215E-13 1.9246E-13 2.5474E-13 5.1132E-12 9.1169E-14 -1.2215E-13 9.4312E-13 -3.2598E-13 -3.8045E-14 -8.4818E-13 -1.6392E-13 1.9246E-13 -3.2598E-13 1.6428E-13 1.1606E-13 1.4415E-12 -3.6533E-13 2.5474E-13 -3.8045E-14 1.1606E-13 5.6408E-13 2.6770E-12 -4.2082E-12 5.1132E-12 -8.4818E-13 1.4415E-12 2.6770E-12 3.7536E-11 # lat0 lon0 xBary yBary zBary JD0 -13.467355 26.736582 -0.981514 0.006387 0.025806 2457041.554318 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 343.74835 +/- 0.020 Argument of Peri: 354.94312 +/- 0.042 Long of Asc Node: 62.61540 +/- 0.001 Inclination: 23.00498 +/- 0.001 Eccentricity: 0.30821841 +/- 0.0002 Semi-Major Axis: 52.96347183 +/- 0.0109 Time of Perihelion: 2463396.1227 +/- 7.7 Perihelion: 36.63915475 +/- 0.0117 Aphelion: 69.28778891 +/- 0.0168 Period (y) 385.4543 +/- 0.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.51418941 +/- 0.0009 Ecliptic Y 17.48092350 +/- 0.0005 Ecliptic Z -8.84398076 +/- 0.0003 Ecliptic XDOT -0.00154159 +/- 0.0000 Ecliptic YDOT 0.00254274 +/- 0.0000 Ecliptic ZDOT 0.00107775 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.96012638 +/- 0.0008 Geocenter to KBO 37.97539996 +/- 0.0011 # Hcoef: 7.86
The following table shows the complete astrometric record for 16RL82. 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 (16RL82) followed by the observatory code and reference code for the source of the astrometry.
2015 01 19.05354 01 58 31.925 -02 16 18.21 24.5g 16RL82 W84 C~55Zp 2016 09 10.30219 02 17 17.306 +00 11 35.01 23.3r 16RL82 W84 C~55Zp 2016 12 23.05251 02 09 45.903 -00 13 15.13 24.3r 16RL82 W84 C~55Zp 2017 10 13.24804 02 20 35.491 +01 05 49.72 23.9r 16RL82 W84 C~55Zp 2017 10 21.22556 02 19 55.139 +01 02 42.25 24.2g 16RL82 W84 C~55Zp 2017 11 16.18502 02 17 41.187 +00 55 01.50 22.8r 16RL82 W84 C~55Zp 2017 12 07.03810 02 16 07.846 +00 52 57.41 23.1i 16RL82 W84 C~55Zp 2018 09 11.33153 02 28 23.045 +02 27 59.25 22.8i 16RL82 W84 C~55Zp 2018 09 11.33817 02 28 23.020 +02 27 58.96 23.7r 16RL82 W84 C~55Zp 2018 09 11.33956 02 28 23.010 +02 27 59.23 24.0g 16RL82 W84 C~55Zp 2018 11 29.17757 02 22 16.220 +02 02 00.86 24.4g 16RL82 W84 C~55Zp
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 0.00 0.00 -0.06 2 1.6434 18985.16 0.09 2280.26 0.04 3 1.9274 12088.40 -0.01 3303.34 -0.01 4 2.7329 22966.11 -0.12 4274.53 -0.15 5 2.7547 22326.15 -0.17 4314.63 0.18 6 2.8258 20262.97 0.17 4599.64 -0.04 7 2.8829 18898.61 -0.04 4983.11 0.19 8 3.6448 31423.34 0.09 6420.33 -0.09 9 3.6449 31422.88 -0.03 6420.19 -0.19 10 3.6449 31422.84 -0.00 6420.50 0.13 11 3.8607 25619.36 0.03 6911.08 -0.00
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.
16RL82 quality flag:3 Type: 7:3EEEE 7:3EEEE 7:3EEEE axisobj 53.592 53.621 53.563 ecceobj 0.314 0.315 0.314 incobj 22.976 22.976 22.977 qmin 36.251 36.254 36.252 qmax 70.706 70.757 70.654 amean 52.968 52.968 52.968 amin 52.385 52.387 52.414 amax 53.697 53.724 53.672 emean 0.276 0.285 0.261 emin 0.222 0.253 0.192 emax 0.317 0.317 0.316 imean 23.089 22.756 23.592 imin 21.756 21.771 21.743 imax 24.895 23.725 25.630 excite_mean 0.480 0.481 0.480 fracstop 1.000 1.000 1.000 cjmean 2.913 2.912 2.912 libcent 0 184.4 175.4 181.3 libamp 0 144.8 138.5 156.3 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 115.0 142.0 98.1 kozaiamp 180.0 180.0 180.0