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: 15RD279
# Created Fri Nov 22 02:10:27 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 2.25y
# First observation: 2015/06/23
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
0.000018 0.036029 -0.000044 0.009450 0.030462 0.000000
# Chi-squared of fit: 10.13 DOF: 50 RMS: 0.11
# Min/Max residuals: -0.30 0.33
# Exact a, adot, b, bdot, g, gdot:
1.838131E-05 3.449903E-02 5.557202E-06 9.070576E-03 2.929150E-02 -7.308994E-03
# Covariance matrix:
1.8113E-13 4.1789E-14 -1.3363E-14 2.8636E-14 1.6614E-13 1.4958E-12
4.1789E-14 6.4626E-13 -6.2702E-14 1.9540E-13 4.7996E-13 9.9922E-12
-1.3363E-14 -6.2702E-14 1.1715E-13 -1.0156E-13 -5.4616E-14 -1.1614E-12
2.8636E-14 1.9540E-13 -1.0156E-13 1.7772E-13 1.5275E-13 3.8304E-12
1.6614E-13 4.7996E-13 -5.4616E-14 1.5275E-13 5.0376E-13 7.8533E-12
1.4958E-12 9.9922E-12 -1.1614E-12 3.8304E-12 7.8533E-12 1.9537E-10
# lat0 lon0 xBary yBary zBary JD0
2.760149 8.833944 1.008603 -0.005930 0.124949 2457197.060258
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 338.93633 +/- 0.019
Argument of Peri: 59.66240 +/- 0.049
Long of Asc Node: 356.87015 +/- 0.000
Inclination: 15.18913 +/- 0.001
Eccentricity: 0.39359007 +/- 0.0004
Semi-Major Axis: 50.65317216 +/- 0.0188
Time of Perihelion: 2464894.9195 +/- 5.2
Perihelion: 30.71658661 +/- 0.0222
Aphelion: 70.58975771 +/- 0.0323
Period (y) 360.5107 +/- 0.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 33.72325439 +/- 0.0008
Ecliptic Y 4.22139623 +/- 0.0001
Ecliptic Z 1.64424223 +/- 0.0000
Ecliptic XDOT -0.00121229 +/- 0.0000
Ecliptic YDOT 0.00306904 +/- 0.0000
Ecliptic ZDOT 0.00081400 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.02618999 +/- 0.0008
Geocenter to KBO 34.13959852 +/- 0.0008
# Hcoef: 9.28
The following table shows the complete astrometric record for 15RD279. 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 (15RD279) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.55948 00 28 05.396 +06 02 18.80 25.0r 15RD279 568 C~2lVT 2015 07 14.60417 00 28 18.846 +06 07 37.26 24.5r 15RD279 568 C~2lVT 2015 07 19.58328 00 28 15.185 +06 08 08.60 24.8r 15RD279 568 C~2lVT 2015 08 13.47579 00 27 20.009 +06 06 38.27 24.7r 15RD279 568 C~2lVT 2015 08 20.41299 00 26 54.776 +06 05 03.93 24.5r 15RD279 568 C~2lVT 2015 08 20.46234 00 26 54.549 +06 05 03.02 24.5r 15RD279 568 C~2lVT 2015 09 07.55863 00 25 33.123 +05 59 00.78 24.8w 15RD279 568 C~2lVT 2015 09 09.38473 00 25 23.932 +05 58 16.34 24.7r 15RD279 568 C~2lVT 2015 09 09.42909 00 25 23.706 +05 58 15.21 24.5r 15RD279 568 C~2lVT 2015 09 09.47005 00 25 23.497 +05 58 14.22 24.4r 15RD279 568 C~2lVT 2015 09 10.49367 00 25 18.260 +05 57 48.66 24.8w 15RD279 568 C~2lVT 2015 09 18.45161 00 24 36.364 +05 54 18.67 24.8w 15RD279 568 C~2lVT 2015 10 08.33928 00 22 47.281 +05 44 36.29 24.8w 15RD279 568 C~2lVT 2015 10 08.39191 00 22 46.988 +05 44 34.69 24.9w 15RD279 568 C~2lVT 2015 10 09.30895 00 22 41.994 +05 44 06.97 24.6w 15RD279 568 C~2lVT 2015 12 08.23353 00 18 58.348 +05 22 07.00 24.9w 15RD279 568 C~2lVT 2016 09 05.59522 00 32 22.503 +07 17 58.32 15RD279 568 C~2lVT 2016 09 06.54431 00 32 17.831 +07 17 37.03 15RD279 568 C~2lVT 2016 09 06.58642 00 32 17.632 +07 17 35.99 15RD279 568 C~2lVT 2016 09 27.50093 00 30 26.093 +07 08 23.59 24.8w 15RD279 568 C~2lVT 2016 10 30.35674 00 27 31.449 +06 52 06.52 15RD279 568 C~2lVT 2016 11 03.31592 00 27 13.367 +06 50 18.97 15RD279 568 C~2lVT 2016 11 03.36828 00 27 13.135 +06 50 17.36 15RD279 568 C~2lVT 2016 12 25.22839 00 25 25.780 +06 38 32.47 24.6w 15RD279 568 C~2lVT 2017 01 02.27514 00 25 35.230 +06 39 21.00 24.6w 15RD279 568 C~2lVT 2017 01 29.23654 00 26 58.787 +06 47 46.45 24.9w 15RD279 568 C~2lVT 2017 09 16.52796 00 38 20.115 +08 33 09.82 24.6w 15RD279 568 C~2lVT 2017 09 22.48140 00 37 47.752 +08 30 32.24 15RD279 568 C~2lVT
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 0.05 0.00 -0.14
2 0.0576 310.14 -0.01 213.25 -0.00
3 0.0712 272.37 0.01 263.62 -0.00
4 0.1394 -519.22 0.20 506.01 0.33
5 0.1584 -902.19 0.20 568.28 -0.04
6 0.1585 -905.66 -0.27 568.79 -0.00
7 0.2081 -2164.51 -0.14 717.22 -0.01
8 0.2131 -2308.03 -0.09 730.77 0.05
9 0.2132 -2311.57 -0.06 731.07 -0.00
10 0.2133 -2314.83 -0.00 731.39 -0.00
11 0.2161 -2396.70 -0.10 738.90 -0.00
12 0.2379 -3053.92 0.13 794.03 0.01
13 0.2923 -4779.79 0.06 905.97 -0.05
14 0.2925 -4784.44 0.05 906.24 -0.06
15 0.2950 -4863.89 -0.07 910.43 -0.06
16 0.4591 -8456.20 0.02 1029.46 0.03
17 1.2048 5311.45 -0.13 2662.22 -0.06
18 1.2074 5239.12 -0.02 2669.97 0.03
19 1.2075 5235.98 0.14 2670.18 -0.12
20 1.2647 3491.80 0.04 2815.75 -0.02
21 1.3547 716.58 -0.06 2944.54 -0.13
22 1.3655 426.68 0.05 2952.28 0.17
23 1.3657 422.87 0.05 2952.17 -0.06
24 1.5076 -1324.93 0.11 2938.28 -0.08
25 1.5297 -1176.41 0.12 2927.02 0.09
26 1.6035 166.87 -0.30 2898.12 0.11
27 2.2340 11981.04 -0.01 4737.46 0.02
28 2.2503 11475.80 0.02 4779.44 -0.01
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.
15RD279 quality flag:2 Type: CENTAURS CENTAURR CENTAURR axisobj 51.331 51.368 51.294 ecceobj 0.400 0.401 0.399 incobj 15.125 15.125 15.125 qmin 29.594 29.966 28.457 qmax 76.485 72.928 77.693 amean 48.975 50.929 50.386 amin 44.394 49.881 46.716 amax 54.122 51.688 54.418 emean 0.362 0.396 0.394 emin 0.282 0.385 0.345 emax 0.413 0.412 0.443 imean 16.757 15.550 14.846 imin 14.012 14.813 11.490 imax 19.112 16.069 17.769 excite_mean 0.464 0.478 0.470 fracstop 1.000 0.198 0.911 cjmean 2.890 2.892 2.895 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 172.5 114.6 175.1 kozaiamp 180.0 60.3 179.9