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: 15RD280 # Created Wed Dec 25 02:10:25 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 31 observations of 31 # Arc: 7.35y # First observation: 2015/06/23 # Last observation: 2022/10/29 # Chi-squared of fit: 7.22 DOF: 56 RMS: 0.09 # Min/Max residuals: -0.36 0.28 # Exact a, adot, b, bdot, g, gdot: 1.391637E-05 1.936957E-02 4.731340E-07 5.050606E-04 2.153146E-02 2.421614E-03 # Covariance matrix: 1.7311E-13 1.5590E-14 -1.3765E-16 4.9876E-16 1.2745E-13 1.4958E-13 1.5590E-14 2.2562E-13 -3.2229E-15 6.4125E-15 1.7566E-13 1.7439E-12 -1.3765E-16 -3.2229E-15 6.6007E-14 -1.4681E-14 -2.3194E-15 -2.6438E-14 4.9876E-16 6.4125E-15 -1.4681E-14 1.0860E-14 4.8395E-15 5.2395E-14 1.2745E-13 1.7566E-13 -2.3194E-15 4.8395E-15 2.4623E-13 1.3300E-12 1.4958E-13 1.7439E-12 -2.6438E-14 5.2395E-14 1.3300E-12 1.4236E-11 # lat0 lon0 xBary yBary zBary JD0 -0.087725 11.036568 1.003195 0.000347 0.162843 2457197.114678 # Heliocentric elements and errors Epoch: 2457196.5000 = 2015/06/23 Mean Anomaly: 105.90272 +/- 0.057 Argument of Peri: 239.22225 +/- 0.052 Long of Asc Node: 13.16588 +/- 0.001 Inclination: 1.49553 +/- 0.000 Eccentricity: 0.10900065 +/- 0.0002 Semi-Major Axis: 44.49448951 +/- 0.0028 Time of Perihelion: 2425305.9218 +/- 17.5 Perihelion: 39.64456139 +/- 0.0075 Aphelion: 49.34441763 +/- 0.0078 Period (y) 296.8025 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 45.61333233 +/- 0.0011 Ecliptic Y 7.87562184 +/- 0.0002 Ecliptic Z -0.07103378 +/- 0.0000 Ecliptic XDOT -0.00017164 +/- 0.0000 Ecliptic YDOT 0.00247013 +/- 0.0000 Ecliptic ZDOT 0.00006382 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.28823107 +/- 0.0010 Geocenter to KBO 46.44361154 +/- 0.0011 # Hcoef: 7.44
The following table shows the complete astrometric record for 15RD280. 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 (15RD280) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.61390 00 40 43.209 +04 17 11.41 24.1r 15RD280 568 C~2nvp 2015 07 14.57141 00 40 56.357 +04 18 38.94 24.3r 15RD280 568 C~2nvp 2015 07 19.54942 00 40 54.447 +04 18 27.79 24.5r 15RD280 568 C~2nvp 2015 08 11.50339 00 40 21.882 +04 15 05.33 24.0r 15RD280 568 C~2nvp 2015 08 11.54506 00 40 21.780 +04 15 04.77 24.1r 15RD280 568 C~2nvp 2015 09 08.40906 00 38 57.945 +04 06 17.36 24.1r 15RD280 568 C~2nvp 2015 09 08.51318 00 38 57.558 +04 06 14.88 23.9r 15RD280 568 C~2nvp 2015 09 08.55681 00 38 57.391 +04 06 13.97 24.0r 15RD280 568 C~2nvp 2015 09 09.53240 00 38 53.805 +04 05 51.26 23.9w 15RD280 568 C~2nvp 2015 09 10.47324 00 38 50.310 +04 05 29.22 24.4w 15RD280 568 C~2nvp 2015 09 16.46364 00 38 27.395 +04 03 04.76 24.5w 15RD280 568 C~2nvp 2015 10 03.39174 00 37 18.812 +03 55 51.97 24.3w 15RD280 568 C~2nvp 2015 10 07.35863 00 37 02.448 +03 54 08.83 24.4r 15RD280 568 C~2nvp 2015 10 07.41176 00 37 02.225 +03 54 07.41 23.8r 15RD280 568 C~2nvp 2015 11 07.25497 00 35 05.041 +03 41 49.23 24.4w 15RD280 568 C~2nvp 2015 11 07.30780 00 35 04.865 +03 41 48.18 24.3w 15RD280 568 C~2nvp 2015 11 10.39374 00 34 55.058 +03 40 46.65 22.7w 15RD280 568 C~2nvp 2016 01 01.26036 00 33 47.268 +03 33 53.88 24.6w 15RD280 568 C~2nvp 2016 09 05.53675 00 43 13.306 +04 35 16.84 24.3w 15RD280 568 C~2nvp 2016 09 07.47613 00 43 06.385 +04 34 33.37 24.1w 15RD280 568 C~2nvp 2016 11 04.28299 00 39 19.906 +04 10 51.53 24.3w 15RD280 568 C~2nvp 2016 11 04.34222 00 39 19.697 +04 10 50.28 24.6w 15RD280 568 C~2nvp 2016 12 29.26158 00 37 48.990 +04 01 32.03 24.6w 15RD280 568 C~2nvp 2017 01 03.23211 00 37 52.311 +04 01 54.93 24.6w 15RD280 568 C~2nvp 2017 01 27.24379 00 38 36.370 +04 06 45.15 24.3w 15RD280 568 C~2nvp 2017 01 28.23958 00 38 39.156 +04 07 02.96 24.1w 15RD280 568 C~2nvp 2017 11 22.36455 00 42 33.189 +04 33 22.03 24.5w 15RD280 568 C~2nvp 2017 12 23.29716 00 41 50.942 +04 29 03.80 24.4w 15RD280 568 C~2nvp 2022 10 29.265010 01 04 21.562 +06 59 10.50 24.3G 15RD280 G37 C~5z6Q 2022 10 29.303630 01 04 21.424 +06 59 09.41 15RD280 G37 C~5z6Q 2022 10 29.342400 01 04 21.228 +06 59 08.72 15RD280 G37 C~5z6Q
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 0.07 0.00 0.01
2 0.0574 0.00 0.02 0.00 -0.09
3 0.0710 0.00 -0.07 0.00 -0.09
4 0.1339 0.00 0.08 0.00 0.06
5 0.1340 0.00 -0.01 0.00 0.08
6 0.2103 0.00 -0.04 0.00 0.05
7 0.2105 0.00 -0.01 0.00 -0.03
8 0.2107 0.00 -0.07 0.00 0.07
9 0.2133 0.00 0.02 0.00 0.01
10 0.2159 0.00 -0.02 0.00 0.01
11 0.2323 0.00 -0.02 0.00 0.00
12 0.2787 0.00 0.05 0.00 -0.11
13 0.2895 0.00 0.05 0.00 -0.01
14 0.2897 0.00 0.05 0.00 -0.05
15 0.3741 0.00 0.04 0.00 -0.01
16 0.3742 0.00 0.04 0.00 0.01
17 0.3827 0.00 -0.02 0.00 -0.02
18 0.5247 0.00 0.02 0.00 0.02
19 1.2044 0.00 -0.04 0.00 0.02
20 1.2098 0.00 0.12 0.00 0.02
21 1.3680 0.00 0.00 0.00 0.05
22 1.3682 0.00 -0.03 0.00 0.07
23 1.5185 0.00 0.01 0.00 0.02
24 1.5322 0.00 0.11 0.00 -0.06
25 1.5979 0.00 -0.12 0.00 0.14
26 1.6006 0.00 -0.04 0.00 -0.14
27 2.4168 0.00 -0.05 0.00 0.10
28 2.5015 0.00 0.04 0.00 0.02
29 7.3502 0.00 0.07 0.00 0.02
30 7.3503 0.00 0.28 0.00 -0.15
31 7.3504 0.00 -0.36 0.00 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.
15RD280 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.926 44.926 44.926 ecceobj 0.106 0.106 0.106 incobj 1.488 1.488 1.488 qmin 39.288 39.284 39.273 qmax 50.406 50.504 50.389 amean 44.703 44.703 44.703 amin 44.339 44.332 44.354 amax 45.100 45.120 45.088 emean 0.103 0.103 0.103 emin 0.086 0.086 0.086 emax 0.118 0.119 0.118 imean 2.210 2.210 2.210 imin 1.448 1.448 1.447 imax 2.887 2.888 2.888 excite_mean 0.110 0.110 0.110 fracstop 1.000 1.000 1.000 cjmean 3.095 3.095 3.095 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 180.0 179.9 180.1 kozaiamp 180.0 179.9 179.9