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: 16RW82 # Created Fri Apr 26 01:18:00 2024 # Orbit generated from Bernstein formalism # Fitting 20 observations of 20 # Arc: 4.16y # First observation: 2014/08/29 # Last observation: 2018/10/27 Preliminary a, adot, b, bdot, g, gdot: 0.000007 0.024132 0.000049 -0.002681 0.024930 0.000000 # Chi-squared of fit: 6.98 DOF: 34 RMS: 0.10 # Min/Max residuals: -0.21 0.22 # Exact a, adot, b, bdot, g, gdot: 1.643912E-05 2.387410E-02 -9.764256E-07 -2.544364E-03 2.362479E-02 -5.459216E-03 # Covariance matrix: 8.9847E-13 -7.4619E-13 2.6310E-15 1.1185E-14 -2.9980E-14 -6.1328E-12 -7.4619E-13 9.3194E-13 3.6439E-14 -1.2155E-13 1.1622E-12 7.8052E-12 2.6310E-15 3.6439E-14 3.7328E-13 -1.6210E-13 2.5642E-13 1.5535E-13 1.1185E-14 -1.2155E-13 -1.6210E-13 1.3324E-13 -7.0847E-13 -6.4033E-13 -2.9980E-14 1.1622E-12 2.5642E-13 -7.0847E-13 7.3406E-12 5.6518E-12 -6.1328E-12 7.8052E-12 1.5535E-13 -6.4033E-13 5.6518E-12 7.4249E-11 # lat0 lon0 xBary yBary zBary JD0 -28.185667 -64.434735 -0.649269 -0.367003 -0.685118 2456898.567468 # Heliocentric elements and errors Epoch: 2456890.5000 = 2014/08/21 Mean Anomaly: 322.76794 +/- 0.046 Argument of Peri: 321.67743 +/- 0.068 Long of Asc Node: 38.23145 +/- 0.002 Inclination: 28.19191 +/- 0.000 Eccentricity: 0.27133430 +/- 0.0004 Semi-Major Axis: 52.34942986 +/- 0.0324 Time of Perihelion: 2471198.5672 +/- 11.7 Perihelion: 38.14523415 +/- 0.0332 Aphelion: 66.55362557 +/- 0.0473 Period (y) 378.7705 +/- 0.35 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 17.01980236 +/- 0.0018 Ecliptic Y -34.07557760 +/- 0.0039 Ecliptic Z -19.99302871 +/- 0.0023 Ecliptic XDOT 0.00219029 +/- 0.0000 Ecliptic YDOT 0.00181827 +/- 0.0000 Ecliptic ZDOT 0.00003904 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.01790160 +/- 0.0033 Geocenter to KBO 42.32842723 +/- 0.0049 # Hcoef: 6.55
The following table shows the complete astrometric record for 16RW82. 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 (16RW82) followed by the observatory code and reference code for the source of the astrometry.
2014 08 29.06669 20 20 18.952 -48 33 32.29 22.9i 16RW82 W84 C~55Zq 2015 09 12.01228 20 27 22.473 -48 16 20.72 22.4r 16RW82 W84 C~55Zq 2015 09 12.01363 20 27 22.479 -48 16 20.72 24.1g 16RW82 W84 C~55Zq 2015 09 13.019653 20 27 18.12 -48 16 01.5 22.4i 16RW82 W84 C~55Zq 2015 09 13.021030 20 27 18.08 -48 16 01.4 22.8r 16RW82 W84 C~55Zq 2015 09 13.022396 20 27 18.09 -48 16 01.3 23.1g 16RW82 W84 C~55Zq 2016 09 07.032442 20 35 53.35 -48 01 26.1 22.2i 16RW82 W84 C~55Zq 2016 09 07.98901 20 35 48.671 -48 01 11.87 22.1z 16RW82 W84 C~55Zq 2016 09 09.026713 20 35 43.64 -48 00 55.8 22.4z 16RW82 W84 C~55Zq 2016 09 22.992755 20 34 46.72 -47 56 03.2 22.8i 16RW82 W84 C~55Zq 2016 09 22.995521 20 34 46.71 -47 56 03.1 22.8r 16RW82 W84 C~55Zq 2016 09 24.026076 20 34 43.31 -47 55 36.2 23.3g 16RW82 W84 C~55Zq 2016 10 02.010012 20 34 21.52 -47 51 45.0 22.7r 16RW82 W84 C~55Zq 2016 10 02.011389 20 34 21.52 -47 51 45.1 23.5g 16RW82 W84 C~55Zq 2017 09 14.07632 20 43 32.261 -47 41 09.09 23.2r 16RW82 W84 C~55Zq 2017 09 14.07770 20 43 32.240 -47 41 09.00 22.8i 16RW82 W84 C~55Zq 2017 10 16.00457 20 42 06.170 -47 25 49.01 22.8i 16RW82 W84 C~55Zq 2017 10 16.07950 20 42 06.117 -47 25 46.30 23.2r 16RW82 W84 C~55Zq 2018 10 27.02012 20 50 06.601 -46 58 21.74 22.9r 16RW82 W84 C~55Zq 2018 10 27.02149 20 50 06.611 -46 58 21.48 23.8g 16RW82 W84 C~55Zq
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 -0.09 0.00 -0.15
2 1.0375 4338.88 0.03 -147.40 0.11
3 1.0375 4338.94 0.14 -147.41 0.05
4 1.0403 4302.57 0.15 -116.71 -0.17
5 1.0403 4302.21 -0.15 -116.51 -0.00
6 1.0403 4302.34 0.02 -116.44 0.02
7 2.0259 9494.21 0.04 -800.50 0.16
8 2.0285 9453.84 0.22 -772.47 0.12
9 2.0314 9410.66 -0.00 -741.62 0.11
10 2.0696 8955.11 0.06 -287.67 -0.04
11 2.0696 8955.04 0.06 -287.54 -0.01
12 2.0724 8930.64 -0.21 -251.48 0.09
13 2.0943 8791.81 -0.09 35.63 0.07
14 2.0943 8791.78 -0.11 35.54 -0.07
15 3.0445 14275.85 0.06 -1125.60 -0.10
16 3.0445 14275.68 -0.06 -1125.45 0.01
17 3.1319 13753.30 -0.07 32.78 -0.03
18 3.1321 13753.68 -0.05 35.53 -0.21
19 4.1614 18950.58 -0.05 -77.84 -0.06
20 4.1614 18950.76 0.12 -77.64 0.09
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.
16RW82 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 52.600 52.689 52.510 ecceobj 0.276 0.277 0.275 incobj 28.236 28.236 28.236 qmin 36.953 36.584 37.014 qmax 69.104 69.710 68.743 amean 52.696 52.811 52.571 amin 52.185 52.273 52.065 amax 53.335 53.453 53.181 emean 0.277 0.283 0.275 emin 0.259 0.261 0.258 emax 0.297 0.305 0.294 imean 27.497 27.261 27.508 imin 27.033 26.676 27.082 imax 28.043 28.013 28.001 excite_mean 0.538 0.539 0.538 fracstop 1.000 1.000 1.000 cjmean 2.826 2.828 2.825 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 163.7 181.0 162.5 kozaiamp 180.0 180.0 180.0