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: 15RF278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 35 observations of 35
# Arc: 2.25y
# First observation: 2015/06/23
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000082 0.023504 0.000004 -0.000415 0.023912 0.000000
# Chi-squared of fit: 6.52 DOF: 64 RMS: 0.08
# Min/Max residuals: -0.16 0.21
# Exact a, adot, b, bdot, g, gdot:
1.485867E-05 2.292895E-02 -1.164123E-07 -4.092139E-04 2.349319E-02 -1.256951E-03
# Covariance matrix:
1.7593E-13 1.1269E-14 -4.1772E-15 1.5729E-17 1.4443E-13 2.2145E-12
1.1269E-14 3.3986E-13 -6.8648E-15 -5.7526E-16 2.7398E-13 8.8845E-12
-4.1772E-15 -6.8648E-15 1.0412E-13 -7.7464E-14 -9.5865E-15 -2.0623E-13
1.5729E-17 -5.7526E-16 -7.7464E-14 9.4465E-14 -3.8851E-16 -2.6413E-14
1.4443E-13 2.7398E-13 -9.5865E-15 -3.8851E-16 3.5734E-13 8.7872E-12
2.2145E-12 8.8845E-12 -2.0623E-13 -2.6413E-14 8.7872E-12 3.4658E-10
# lat0 lon0 xBary yBary zBary JD0
2.171409 7.938052 1.010429 -0.004051 0.109300 2457197.056068
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 291.10116 +/- 0.059
Argument of Peri: 192.08966 +/- 0.137
Long of Asc Node: 252.54489 +/- 0.017
Inclination: 2.38295 +/- 0.000
Eccentricity: 0.08322206 +/- 0.0008
Semi-Major Axis: 43.49614351 +/- 0.0064
Time of Perihelion: 2477243.7118 +/- 16.7
Perihelion: 39.87630489 +/- 0.0356
Aphelion: 47.11598213 +/- 0.0358
Period (y) 286.8695 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.15511396 +/- 0.0011
Ecliptic Y 4.85880124 +/- 0.0001
Ecliptic Z 1.61282654 +/- 0.0000
Ecliptic XDOT -0.00051467 +/- 0.0000
Ecliptic YDOT 0.00262029 +/- 0.0000
Ecliptic ZDOT -0.00005314 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.46484183 +/- 0.0011
Geocenter to KBO 42.56553244 +/- 0.0011
# Hcoef: 8.13
The following table shows the complete astrometric record for 15RF278. 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 (15RF278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.55529 00 25 43.280 +05 08 37.98 24.6r 15RF278 568 C~2lVP 2015 07 14.60008 00 25 51.781 +05 10 38.84 23.8r 15RF278 568 C~2lVP 2015 07 19.57915 00 25 48.315 +05 10 31.64 24.1r 15RF278 568 C~2lVP 2015 08 19.60440 00 24 43.738 +05 04 57.23 24.4r 15RF278 568 C~2lVP 2015 08 20.40889 00 24 41.193 +05 04 42.34 24.3r 15RF278 568 C~2lVP 2015 08 20.45757 00 24 41.029 +05 04 41.39 24.6r 15RF278 568 C~2lVP 2015 09 07.55453 00 23 34.930 +04 58 04.36 24.7w 15RF278 568 C~2lVP 2015 09 09.38065 00 23 27.514 +04 57 18.39 24.3r 15RF278 568 C~2lVP 2015 09 09.42501 00 23 27.324 +04 57 17.20 24.8r 15RF278 568 C~2lVP 2015 09 09.46595 00 23 27.160 +04 57 16.15 24.5r 15RF278 568 C~2lVP 2015 09 10.48959 00 23 22.941 +04 56 49.99 24.6w 15RF278 568 C~2lVP 2015 09 18.44605 00 22 49.203 +04 53 18.01 25.4w 15RF278 568 C~2lVP 2015 10 08.33404 00 21 21.672 +04 43 50.25 24.4w 15RF278 568 C~2lVP 2015 10 08.38664 00 21 21.440 +04 43 48.70 24.7w 15RF278 568 C~2lVP 2015 10 09.30372 00 21 17.456 +04 43 22.13 24.4w 15RF278 568 C~2lVP 2015 11 10.42944 00 19 14.498 +04 29 10.59 24.7w 15RF278 568 C~2lVP 2015 12 08.22831 00 18 18.089 +04 21 37.65 24.4w 15RF278 568 C~2lVP 2016 01 01.29102 00 18 22.278 +04 20 35.67 24.6w 15RF278 568 C~2lVP 2016 09 05.49854 00 28 40.196 +05 29 11.88 24.6w 15RF278 568 C~2lVP 2016 09 05.51877 00 28 40.097 +05 29 11.42 24.2w 15RF278 568 C~2lVP 2016 09 06.45273 00 28 36.405 +05 28 48.78 24.8w 15RF278 568 C~2lVP 2016 09 06.49401 00 28 36.228 +05 28 47.58 24.9w 15RF278 568 C~2lVP 2016 09 07.45899 00 28 32.373 +05 28 23.94 24.5w 15RF278 568 C~2lVP 2016 09 07.50445 00 28 32.171 +05 28 22.75 24.7w 15RF278 568 C~2lVP 2016 09 26.45157 00 27 11.159 +05 19 52.83 24.4w 15RF278 568 C~2lVP 2016 09 26.45563 00 27 11.136 +05 19 52.71 24.6w 15RF278 568 C~2lVP 2016 10 30.34461 00 24 48.001 +05 03 55.87 24.6w 15RF278 568 C~2lVP 2016 11 03.29848 00 24 33.726 +05 02 15.41 24.2w 15RF278 568 C~2lVP 2016 11 03.35091 00 24 33.539 +05 02 14.07 24.6w 15RF278 568 C~2lVP 2016 12 24.26796 00 23 08.472 +04 50 22.65 24.5w 15RF278 568 C~2lVP 2017 01 02.25760 00 23 16.516 +04 50 41.06 24.8w 15RF278 568 C~2lVP 2017 01 26.23696 00 24 12.612 +04 55 18.45 24.5w 15RF278 568 C~2lVP 2017 01 26.24327 00 24 12.630 +04 55 18.78 24.9w 15RF278 568 C~2lVP 2017 09 15.44018 00 33 02.111 +05 55 39.78 24.7w 15RF278 568 C~2lVP 2017 09 22.50534 00 32 31.571 +05 52 28.22 24.4w 15RF278 568 C~2lVP
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 0.12 0.00 -0.03
2 0.0576 164.45 0.10 60.77 0.13
3 0.0712 114.04 -0.13 74.64 0.02
4 0.1562 -904.32 0.21 149.31 0.02
5 0.1584 -945.13 0.03 150.69 -0.03
6 0.1585 -947.76 -0.06 150.79 -0.04
7 0.2081 -2011.97 -0.15 177.48 0.02
8 0.2131 -2131.95 -0.07 179.20 0.01
9 0.2132 -2135.03 -0.16 179.23 -0.02
10 0.2133 -2137.70 -0.06 179.24 -0.08
11 0.2161 -2205.96 -0.03 180.21 -0.05
12 0.2379 -2752.97 0.07 185.52 -0.10
13 0.2923 -4179.60 -0.07 183.56 0.05
14 0.2925 -4183.40 -0.05 183.51 0.01
15 0.2950 -4248.64 0.09 182.78 -0.05
16 0.3830 -6275.39 0.06 131.99 0.01
17 0.4591 -7230.59 0.02 52.06 0.08
18 0.5249 -7197.74 0.05 -29.78 -0.04
19 1.2045 2915.04 0.09 89.79 0.00
20 1.2046 2913.50 -0.14 89.95 0.13
21 1.2071 2853.90 0.10 90.90 0.11
22 1.2072 2851.00 -0.10 90.84 -0.02
23 1.2099 2788.77 0.13 91.82 0.01
24 1.2100 2785.53 -0.10 91.92 0.03
25 1.2619 1472.56 0.05 101.00 -0.02
26 1.2619 1472.19 -0.02 101.02 0.00
27 1.3547 -870.12 0.11 67.75 -0.07
28 1.3655 -1105.76 0.03 59.94 -0.03
29 1.3656 -1108.86 0.03 59.82 -0.07
30 1.5050 -2558.08 -0.11 -89.68 0.01
31 1.5296 -2440.39 0.00 -120.45 -0.03
32 1.5953 -1560.63 -0.04 -197.98 -0.05
33 1.5953 -1560.25 0.01 -197.78 0.17
34 2.2310 7136.38 0.04 10.79 -0.07
35 2.2504 6641.54 -0.05 13.64 -0.02
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.
15RF278 quality flag:2 Type: 7:4EEE 7:4EEE SCATNEAR axisobj 43.929 43.944 43.915 ecceobj 0.085 0.087 0.084 incobj 2.382 2.382 2.382 qmin 38.961 39.174 38.353 qmax 48.868 48.642 49.620 amean 43.725 43.726 43.718 amin 43.326 43.334 43.303 amax 44.158 44.162 44.198 emean 0.091 0.088 0.099 emin 0.074 0.074 0.073 emax 0.107 0.102 0.123 imean 4.180 4.230 4.221 imin 3.299 3.411 3.265 imax 4.984 4.974 5.119 excite_mean 0.117 0.115 0.124 fracstop 1.000 1.000 1.000 cjmean 3.082 3.082 3.079 libcent 0 180.8 185.6 -180.0 libamp 0 175.8 173.4 -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 187.7 188.2 181.2 kozaiamp 180.0 180.0 180.0