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: 15RF280
# Created Sun Dec 22 02:10:29 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 2.50y
# First observation: 2015/06/23
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000061 0.025483 0.000004 0.009348 0.025886 0.000000
# Chi-squared of fit: 11.50 DOF: 56 RMS: 0.11
# Min/Max residuals: -0.28 0.22
# Exact a, adot, b, bdot, g, gdot:
1.445273E-05 2.484159E-02 6.740626E-06 9.147630E-03 2.534678E-02 9.768310E-04
# Covariance matrix:
1.9087E-13 4.3657E-14 -1.1401E-14 4.2418E-14 1.6575E-13 2.0295E-12
4.3657E-14 3.9848E-13 -4.8251E-14 1.8565E-13 3.1004E-13 8.7193E-12
-1.1401E-14 -4.8251E-14 1.0203E-13 -8.7323E-14 -4.1649E-14 -1.3245E-12
4.2418E-14 1.8565E-13 -8.7323E-14 1.7974E-13 1.5869E-13 5.1119E-12
1.6575E-13 3.1004E-13 -4.1649E-14 1.5869E-13 3.6678E-13 7.4934E-12
2.0295E-12 8.7193E-12 -1.3245E-12 5.1119E-12 7.4934E-12 2.3968E-10
# lat0 lon0 xBary yBary zBary JD0
0.114315 11.581910 1.001600 -0.000246 0.172384 2457197.114678
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 7.35413 +/- 0.357
Argument of Peri: 351.57994 +/- 0.425
Long of Asc Node: 9.81028 +/- 0.000
Inclination: 20.24721 +/- 0.001
Eccentricity: 0.08383545 +/- 0.0001
Semi-Major Axis: 42.84637178 +/- 0.0028
Time of Perihelion: 2455097.8425 +/- 101.6
Perihelion: 39.25432697 +/- 0.0059
Aphelion: 46.43841659 +/- 0.0061
Period (y) 280.4654 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.67804083 +/- 0.0009
Ecliptic Y 6.90544694 +/- 0.0002
Ecliptic Z 0.07903470 +/- 0.0000
Ecliptic XDOT -0.00043975 +/- 0.0000
Ecliptic YDOT 0.00264320 +/- 0.0000
Ecliptic ZDOT 0.00098836 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.28972240 +/- 0.0009
Geocenter to KBO 39.45273795 +/- 0.0009
# Hcoef: 8.81
The following table shows the complete astrometric record for 15RF280. 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 (15RF280) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.61390 00 42 24.998 +04 41 08.89 25.4r 15RF280 568 C~2nvp 2015 07 14.57141 00 42 40.244 +04 44 48.53 25.0r 15RF280 568 C~2nvp 2015 07 19.54942 00 42 37.949 +04 45 03.56 24.8r 15RF280 568 C~2nvp 2015 08 11.50339 00 41 59.066 +04 43 13.56 24.7r 15RF280 568 C~2nvp 2015 08 11.54506 00 41 58.932 +04 43 13.02 25.6r 15RF280 568 C~2nvp 2015 09 08.40906 00 40 18.862 +04 35 23.14 24.4r 15RF280 568 C~2nvp 2015 09 08.51318 00 40 18.399 +04 35 20.87 24.6r 15RF280 568 C~2nvp 2015 09 08.55681 00 40 18.203 +04 35 19.93 24.7r 15RF280 568 C~2nvp 2015 09 09.53240 00 40 13.911 +04 34 58.39 24.7w 15RF280 568 C~2nvp 2015 09 10.47324 00 40 09.733 +04 34 37.37 25.1w 15RF280 568 C~2nvp 2015 09 16.46364 00 39 42.335 +04 32 18.11 24.9w 15RF280 568 C~2nvp 2015 10 03.39174 00 38 20.212 +04 25 14.20 25.2w 15RF280 568 C~2nvp 2015 10 07.35864 00 38 00.587 +04 23 31.70 24.7r 15RF280 568 C~2nvp 2015 10 07.41176 00 38 00.309 +04 23 30.50 25.1r 15RF280 568 C~2nvp 2015 11 07.25497 00 35 39.554 +04 11 24.25 25.0w 15RF280 568 C~2nvp 2015 11 07.30781 00 35 39.341 +04 11 23.25 24.9w 15RF280 568 C~2nvp 2015 11 10.39374 00 35 27.534 +04 10 24.23 24.7w 15RF280 568 C~2nvp 2015 12 07.33142 00 34 14.042 +04 04 56.12 25.0w 15RF280 568 C~2nvp 2016 01 01.26036 00 34 03.855 +04 05 56.43 25.2w 15RF280 568 C~2nvp 2016 09 26.55282 00 43 23.694 +05 31 58.73 24.6w 15RF280 568 C~2nvp 2016 11 02.39575 00 40 28.307 +05 16 47.71 24.6r 15RF280 568 C~2nvp 2016 11 02.46170 00 40 28.010 +05 16 46.73 24.5r 15RF280 568 C~2nvp 2016 11 04.30057 00 40 20.370 +05 16 07.07 24.4w 15RF280 568 C~2nvp 2016 11 04.35961 00 40 20.115 +05 16 05.76 24.9w 15RF280 568 C~2nvp 2016 12 29.28720 00 38 28.519 +05 08 17.98 24.8w 15RF280 568 C~2nvp 2017 01 02.32226 00 38 31.234 +05 08 51.39 24.8w 15RF280 568 C~2nvp 2017 09 15.43089 00 48 52.012 +06 40 23.92 24.9w 15RF280 568 C~2nvp 2017 09 16.51398 00 48 46.999 +06 39 59.61 25.1w 15RF280 568 C~2nvp 2017 09 22.46739 00 48 18.867 +06 37 40.66 24.9w 15RF280 568 C~2nvp 2017 09 22.49605 00 48 18.725 +06 37 40.04 24.9w 15RF280 568 C~2nvp 2017 12 23.28322 00 42 55.264 +06 10 32.35 24.9w 15RF280 568 C~2nvp
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 0.22 0.00 -0.21
2 0.0574 295.64 -0.05 113.06 -0.14
3 0.0710 269.94 0.19 140.30 -0.01
4 0.1339 -308.05 0.10 266.34 0.06
5 0.1340 -310.10 -0.21 266.63 0.09
6 0.2103 -1870.81 -0.07 419.82 0.04
7 0.2105 -1878.07 -0.04 420.44 0.04
8 0.2107 -1881.13 -0.04 420.72 0.06
9 0.2133 -1948.62 -0.02 426.04 0.05
10 0.2159 -2014.34 -0.06 431.17 0.06
11 0.2323 -2445.87 -0.07 463.56 -0.23
12 0.2787 -3742.13 0.15 555.12 0.15
13 0.2895 -4052.43 -0.08 576.00 -0.06
14 0.2897 -4056.73 -0.17 576.53 0.16
15 0.3741 -6279.62 0.03 735.65 0.04
16 0.3742 -6282.95 0.02 735.98 0.08
17 0.3827 -6468.74 -0.01 751.17 -0.22
18 0.4564 -7610.04 0.03 882.12 0.09
19 0.5247 -7726.60 0.08 997.64 0.11
20 1.2620 1999.27 -0.04 2464.76 -0.07
21 1.3629 -767.78 -0.05 2650.78 -0.28
22 1.3630 -772.24 -0.06 2651.61 0.22
23 1.3681 -892.79 0.05 2659.82 0.05
24 1.3682 -896.81 -0.07 2660.11 0.04
25 1.5186 -2614.09 0.02 2883.45 -0.02
26 1.5297 -2563.66 0.15 2898.26 -0.19
27 2.2308 8113.80 0.03 4340.49 -0.03
28 2.2338 8035.40 -0.04 4347.07 0.05
29 2.2501 7594.48 0.04 4381.76 -0.03
30 2.2502 7592.29 0.04 4382.02 0.05
31 2.5015 2513.09 -0.05 4761.14 0.05
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.
15RF280 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.267 43.278 43.256 ecceobj 0.093 0.093 0.093 incobj 20.155 20.156 20.155 qmin 38.426 38.385 38.432 qmax 47.914 47.932 47.838 amean 43.033 43.043 43.021 amin 42.694 42.708 42.686 amax 43.390 43.399 43.388 emean 0.091 0.091 0.090 emin 0.078 0.079 0.078 emax 0.104 0.105 0.103 imean 20.118 20.118 20.117 imin 19.691 19.685 19.690 imax 20.571 20.572 20.565 excite_mean 0.356 0.356 0.356 fracstop 1.000 1.000 1.000 cjmean 2.936 2.936 2.936 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 180.7 180.7 180.6 kozaiamp 180.0 180.0 180.0