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: 16UP273 # Created Sun Dec 22 02:10:54 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 4.07y # First observation: 2014/10/21 # Last observation: 2018/11/16 Preliminary a, adot, b, bdot, g, gdot: -0.000795 0.044982 -0.000126 0.006534 0.032364 0.000000 # Chi-squared of fit: 3.70 DOF: 12 RMS: 0.11 # Min/Max residuals: -0.20 0.20 # Exact a, adot, b, bdot, g, gdot: 2.189474E-05 4.382638E-02 3.096591E-06 6.373032E-03 3.186417E-02 -5.996418E-03 # Covariance matrix: 1.4444E-12 -1.0400E-12 6.7790E-14 -1.0352E-13 -1.8996E-13 -3.9590E-12 -1.0400E-12 1.2653E-12 -1.1062E-13 1.6833E-13 3.7509E-13 6.4475E-12 6.7790E-14 -1.1062E-13 1.0297E-12 -3.6638E-13 -4.2329E-14 -6.3544E-13 -1.0352E-13 1.6833E-13 -3.6638E-13 1.6735E-13 5.4011E-14 9.6609E-13 -1.8996E-13 3.7509E-13 -4.2329E-14 5.4011E-14 1.2724E-12 2.2461E-12 -3.9590E-12 6.4475E-12 -6.3544E-13 9.6609E-13 2.2461E-12 3.7019E-11 # lat0 lon0 xBary yBary zBary JD0 -11.686372 24.970599 -0.043473 -0.201638 -0.975725 2456951.788308 # Heliocentric elements and errors Epoch: 2456950.5000 = 2014/10/20 Mean Anomaly: 356.23951 +/- 0.004 Argument of Peri: 325.96009 +/- 0.020 Long of Asc Node: 78.37218 +/- 0.001 Inclination: 14.02721 +/- 0.000 Eccentricity: 0.62002590 +/- 0.0002 Semi-Major Axis: 83.17189498 +/- 0.0387 Time of Perihelion: 2459844.5449 +/- 2.8 Perihelion: 31.60316632 +/- 0.0203 Aphelion: 134.74062364 +/- 0.0642 Period (y) 758.5306 +/- 0.53 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.74196850 +/- 0.0010 Ecliptic Y 13.43575914 +/- 0.0005 Ecliptic Z -6.35676116 +/- 0.0002 Ecliptic XDOT -0.00195100 +/- 0.0000 Ecliptic YDOT 0.00324272 +/- 0.0000 Ecliptic ZDOT 0.00064071 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.35782424 +/- 0.0009 Geocenter to KBO 31.38321592 +/- 0.0011 # Hcoef: 8.80
The following table shows the complete astrometric record for 16UP273. 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 (16UP273) followed by the observatory code and reference code for the source of the astrometry.
2014 10 21.28753 01 49 32.380 -01 13 33.99 23.9r 16UP273 W84 C~55b1 2016 10 28.23296 02 06 41.238 +01 14 13.60 23.3r 16UP273 W84 C~55b1 2016 10 28.23436 02 06 41.240 +01 14 13.51 23.1i 16UP273 W84 C~55b1 2016 11 27.12737 02 04 01.462 +01 05 45.88 24.2r 16UP273 W84 C~55b1 2017 09 18.31069 02 19 10.635 +02 50 00.64 24.3r 16UP273 W84 C~55b1 2017 09 25.30996 02 18 41.207 +02 46 32.59 24.0r 16UP273 W84 C~55b1 2017 09 25.34372 02 18 41.048 +02 46 31.69 23.3i 16UP273 W84 C~55b1 2017 10 27.25430 02 15 51.702 +02 31 11.02 24.4g 16UP273 W84 C~55b1 2018 11 16.14261 02 23 07.431 +03 40 57.76 23.3i 16UP273 W84 C~55b1
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 -0.03 0.00 0.01
2 2.0204 17635.83 0.08 2706.93 0.05
3 2.0204 17635.82 0.20 2706.83 -0.06
4 2.1022 15202.49 -0.12 3097.66 0.05
5 2.9104 30361.62 -0.16 4046.97 0.17
6 2.9296 29864.93 0.08 4009.99 -0.14
7 2.9297 29862.32 0.06 4010.00 -0.01
8 3.0170 27111.54 -0.20 4059.30 -0.15
9 4.0708 34882.42 0.08 5659.02 0.08
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.
16UP273 quality flag:2 Type: CENTAURS CENTAURS SCATNEAR axisobj 84.914 85.021 84.808 ecceobj 0.627 0.628 0.627 incobj 14.029 14.029 14.029 qmin 29.612 29.941 30.394 qmax 143.903 139.086 171.289 amean 67.369 75.253 91.330 amin 61.254 67.928 78.846 amax 87.844 85.374 101.423 emean 0.538 0.584 0.651 emin 0.483 0.535 0.593 emax 0.639 0.629 0.693 imean 12.067 12.289 12.215 imin 9.606 9.689 10.438 imax 14.404 14.479 14.123 excite_mean 0.578 0.622 0.685 fracstop 1.000 1.000 1.000 cjmean 2.910 2.907 2.909 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 186.1 167.2 162.7 kozaiamp 179.9 180.0 180.0