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: 15RA280
# Created Sun Nov 24 02:10:25 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 2.50y
# First observation: 2015/06/23
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000061 0.017667 0.000002 0.000575 0.020598 0.000000
# Chi-squared of fit: 7.50 DOF: 62 RMS: 0.08
# Min/Max residuals: -0.30 0.22
# Exact a, adot, b, bdot, g, gdot:
1.358041E-05 1.732576E-02 1.167877E-06 5.680852E-04 2.031260E-02 6.597022E-04
# Covariance matrix:
1.7828E-13 2.9363E-14 -2.3048E-15 4.3477E-15 1.5221E-13 2.9474E-12
2.9363E-14 2.5259E-13 -4.9998E-15 1.2415E-14 2.4040E-13 8.4827E-12
-2.3048E-15 -4.9998E-15 9.8660E-14 -6.1677E-14 -6.3284E-15 -2.3230E-13
4.3477E-15 1.2415E-14 -6.1677E-14 6.7393E-14 1.4358E-14 6.2274E-13
1.5221E-13 2.4040E-13 -6.3284E-15 1.4358E-14 3.4508E-13 9.7876E-12
2.9474E-12 8.4827E-12 -2.3230E-13 6.2274E-13 9.7876E-12 4.2626E-10
# lat0 lon0 xBary yBary zBary JD0
0.552195 10.741943 1.004019 -0.001422 0.157677 2457197.114678
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 169.70103 +/- 0.615
Argument of Peri: 204.77201 +/- 0.617
Long of Asc Node: 353.28198 +/- 0.007
Inclination: 1.97452 +/- 0.001
Eccentricity: 0.09901178 +/- 0.0001
Semi-Major Axis: 44.71162670 +/- 0.0027
Time of Perihelion: 2514915.3849 +/- 186.5
Perihelion: 40.28464886 +/- 0.0068
Aphelion: 49.13860454 +/- 0.0070
Period (y) 298.9778 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 48.39428098 +/- 0.0014
Ecliptic Y 8.16013879 +/- 0.0003
Ecliptic Z 0.47456900 +/- 0.0000
Ecliptic XDOT -0.00035109 +/- 0.0000
Ecliptic YDOT 0.00230454 +/- 0.0000
Ecliptic ZDOT 0.00007749 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.07972609 +/- 0.0014
Geocenter to KBO 49.23053350 +/- 0.0014
# Hcoef: 7.55
The following table shows the complete astrometric record for 15RA280. 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 (15RA280) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.61390 00 38 37.584 +04 45 35.31 23.9r 15RA280 568 C~2nvo 2015 07 14.54595 00 38 48.370 +04 47 07.06 24.6r 15RA280 568 C~2nvo 2015 07 19.51084 00 38 46.202 +04 46 58.70 24.7r 15RA280 568 C~2nvo 2015 08 11.50339 00 38 13.754 +04 43 55.66 26.4r 15RA280 568 C~2nvo 2015 08 11.54506 00 38 13.629 +04 43 55.09 26.1r 15RA280 568 C~2nvo 2015 09 08.40906 00 36 52.864 +04 35 43.05 24.3r 15RA280 568 C~2nvo 2015 09 08.51318 00 36 52.495 +04 35 40.88 24.4r 15RA280 568 C~2nvo 2015 09 08.55681 00 36 52.328 +04 35 39.88 25.5r 15RA280 568 C~2nvo 2015 09 09.53240 00 36 48.896 +04 35 18.54 24.6w 15RA280 568 C~2nvo 2015 09 10.47324 00 36 45.552 +04 34 57.82 24.7w 15RA280 568 C~2nvo 2015 09 16.46364 00 36 23.640 +04 32 41.78 25.2w 15RA280 568 C~2nvo 2015 10 03.39174 00 35 18.297 +04 25 51.89 24.4w 15RA280 568 C~2nvo 2015 10 07.35864 00 35 02.710 +04 24 13.72 24.8r 15RA280 568 C~2nvo 2015 11 07.25497 00 33 11.336 +04 12 23.36 24.6w 15RA280 568 C~2nvo 2015 11 07.30781 00 33 11.168 +04 12 22.28 25.0w 15RA280 568 C~2nvo 2015 11 10.39374 00 33 01.889 +04 11 22.43 25.1w 15RA280 568 C~2nvo 2015 12 07.33142 00 32 04.597 +04 05 07.79 20.4w 15RA280 568 C~2nvo 2016 01 01.26036 00 31 57.831 +04 04 13.85 25.0w 15RA280 568 C~2nvo 2016 09 05.53675 00 40 41.174 +05 02 06.24 23.8w 15RA280 568 C~2nvo 2016 09 07.47613 00 40 34.510 +05 01 25.36 24.5w 15RA280 568 C~2nvo 2016 09 07.52244 00 40 34.351 +05 01 24.39 24.7w 15RA280 568 C~2nvp 2016 09 27.48878 00 39 19.847 +04 53 41.86 24.8w 15RA280 568 C~2nvp 2016 11 04.28299 00 36 58.775 +04 38 48.52 25.3w 15RA280 568 C~2nvp 2016 11 04.34222 00 36 58.576 +04 38 47.39 24.7w 15RA280 568 C~2nvp 2016 12 29.26158 00 35 33.185 +04 29 22.30 24.7w 15RA280 568 C~2nvp 2017 01 03.23211 00 35 36.382 +04 29 40.28 24.9w 15RA280 568 C~2nvp 2017 01 27.23800 00 36 18.351 +04 33 57.50 15RA280 568 C~2nvp 2017 01 28.23385 00 36 20.996 +04 34 14.25 24.3w 15RA280 568 C~2nvp 2017 01 30.24057 00 36 26.500 +04 34 48.62 23.8w 15RA280 568 C~2nvp 2017 09 16.50467 00 43 44.214 +05 23 44.50 24.8w 15RA280 568 C~2nvp 2017 09 17.40380 00 43 40.883 +05 23 23.82 24.8w 15RA280 568 C~2nvp 2017 09 22.45810 00 43 21.750 +05 21 25.52 15RA280 568 C~2nvp 2017 11 22.37200 00 39 48.795 +04 58 57.81 24.7w 15RA280 568 C~2nvp 2017 12 23.29716 00 39 09.385 +04 54 32.83 24.0w 15RA280 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 -0.02 0.00 -0.15
2 0.0573 184.29 0.05 21.18 -0.07
3 0.0709 151.20 0.02 26.20 -0.03
4 0.1339 -366.77 0.15 48.06 -0.07
5 0.1340 -368.71 -0.30 48.26 0.08
6 0.2103 -1672.44 0.03 69.66 -0.00
7 0.2105 -1678.36 0.11 69.83 0.06
8 0.2107 -1681.05 -0.06 69.89 0.07
9 0.2133 -1736.63 0.01 70.42 -0.00
10 0.2159 -1790.75 -0.01 71.00 0.02
11 0.2323 -2145.53 -0.09 74.60 0.14
12 0.2787 -3205.31 0.22 81.78 -0.08
13 0.2895 -3458.31 -0.09 83.19 0.12
14 0.3741 -5270.16 0.06 85.85 -0.01
15 0.3742 -5272.89 0.02 85.85 -0.03
16 0.3827 -5424.16 0.04 85.52 -0.08
17 0.4564 -6360.34 -0.08 78.95 -0.04
18 0.5247 -6474.75 -0.03 69.28 0.01
19 1.2044 2087.73 0.03 188.00 -0.03
20 1.2098 1980.08 -0.01 189.37 0.07
21 1.2099 1977.52 0.07 189.41 0.05
22 1.2645 771.88 -0.00 199.95 0.02
23 1.3680 -1518.31 -0.02 205.52 -0.06
24 1.3682 -1521.49 -0.03 205.65 0.04
25 1.5185 -2917.80 -0.01 187.71 -0.06
26 1.5322 -2866.77 -0.06 185.45 -0.04
27 1.5979 -2188.50 -0.01 175.31 -0.09
28 1.6006 -2145.55 0.16 175.17 0.15
29 1.6061 -2056.36 -0.14 174.45 0.13
30 2.2338 5112.87 -0.01 314.19 0.02
31 2.2362 5058.97 0.02 314.57 -0.07
32 2.2501 4749.55 -0.06 317.21 -0.06
33 2.4169 1293.71 -0.06 321.13 0.04
34 2.5015 648.01 0.13 308.13 -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.
15RA280 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.125 45.135 45.117 ecceobj 0.089 0.089 0.089 incobj 1.964 1.964 1.964 qmin 39.862 39.874 39.839 qmax 50.206 50.233 50.175 amean 44.910 44.920 44.902 amin 44.543 44.557 44.538 amax 45.301 45.315 45.290 emean 0.094 0.094 0.094 emin 0.079 0.079 0.079 emax 0.108 0.109 0.109 imean 2.945 2.945 2.943 imin 2.244 2.247 2.241 imax 3.517 3.519 3.519 excite_mean 0.107 0.107 0.107 fracstop 1.000 1.000 1.000 cjmean 3.098 3.099 3.098 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 173.8 174.0 174.0 kozaiamp 180.0 180.0 179.9