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: 15RO281
# Created Sun Nov 24 02:10:26 2024
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 2.19y
# First observation: 2015/07/14
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000089 0.030260 0.000004 -0.000025 0.027224 0.000000
# Chi-squared of fit: 6.48 DOF: 58 RMS: 0.08
# Min/Max residuals: -0.16 0.27
# Exact a, adot, b, bdot, g, gdot:
1.741886E-05 2.963046E-02 2.996793E-07 -2.873423E-05 2.691071E-02 -1.656717E-03
# Covariance matrix:
1.3284E-13 7.3341E-15 -2.4619E-15 3.9968E-16 1.1130E-13 1.0848E-12
7.3341E-15 5.9325E-13 -7.7076E-15 7.6632E-15 3.3413E-13 1.1943E-11
-2.4619E-15 -7.7076E-15 7.7685E-14 -6.1354E-14 -7.2658E-15 -1.7325E-13
3.9968E-16 7.6632E-15 -6.1354E-14 1.1353E-13 4.3650E-15 2.0025E-13
1.1130E-13 3.3413E-13 -7.2658E-15 4.3650E-15 3.2136E-13 7.4479E-12
1.0848E-12 1.1943E-11 -1.7325E-13 2.0025E-13 7.4479E-12 3.0578E-10
# lat0 lon0 xBary yBary zBary JD0
2.384162 12.657434 1.004687 0.006816 -0.161267 2457218.064009
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 335.08753 +/- 0.130
Argument of Peri: 124.53406 +/- 0.197
Long of Asc Node: 281.39469 +/- 0.016
Inclination: 2.37334 +/- 0.000
Eccentricity: 0.16788698 +/- 0.0004
Semi-Major Axis: 43.70893501 +/- 0.0056
Time of Perihelion: 2464514.6232 +/- 38.1
Perihelion: 36.37077406 +/- 0.0163
Aphelion: 51.04709596 +/- 0.0169
Period (y) 288.9772 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.59950206 +/- 0.0008
Ecliptic Y 7.19093233 +/- 0.0002
Ecliptic Z 1.54589661 +/- 0.0000
Ecliptic XDOT -0.00082703 +/- 0.0000
Ecliptic YDOT 0.00289813 +/- 0.0000
Ecliptic ZDOT -0.00000987 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.33125842 +/- 0.0008
Geocenter to KBO 37.15992837 +/- 0.0008
# Hcoef: 7.48
The following table shows the complete astrometric record for 15RO281. 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 (15RO281) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.56322 00 42 49.610 +07 11 43.28 23.1r 15RO281 568 C~2nvu 2015 07 19.54121 00 42 48.490 +07 11 56.87 23.5r 15RO281 568 C~2nvu 2015 08 13.49630 00 42 08.244 +07 09 17.82 23.0r 15RO281 568 C~2nvu 2015 08 13.50040 00 42 08.222 +07 09 17.77 23.0r 15RO281 568 C~2nvu 2015 08 13.54973 00 42 08.080 +07 09 17.11 23.1r 15RO281 568 C~2nvu 2015 08 13.55383 00 42 08.080 +07 09 17.40 23.4r 15RO281 568 C~2nvu 2015 08 19.56300 00 41 50.415 +07 07 45.02 23.4r 15RO281 568 C~2nvu 2015 08 19.63315 00 41 50.180 +07 07 44.07 23.1r 15RO281 568 C~2nvu 2015 08 20.43431 00 41 47.653 +07 07 30.11 23.0r 15RO281 568 C~2nvu 2015 08 20.48358 00 41 47.490 +07 07 29.26 23.3r 15RO281 568 C~2nvu 2015 09 07.58083 00 40 38.417 +07 00 58.18 23.2w 15RO281 568 C~2nvu 2015 09 09.41265 00 40 30.428 +07 00 11.06 23.1r 15RO281 568 C~2nvu 2015 09 09.45371 00 40 30.248 +07 00 09.99 23.3r 15RO281 568 C~2nvu 2015 09 09.49464 00 40 30.071 +07 00 08.91 23.1r 15RO281 568 C~2nvu 2015 09 10.51481 00 40 25.535 +06 59 41.96 23.4w 15RO281 568 C~2nvu 2015 09 18.47789 00 39 48.791 +06 56 00.89 23.5w 15RO281 568 C~2nvu 2015 10 08.36568 00 38 11.065 +06 45 49.24 23.4w 15RO281 568 C~2nvu 2015 10 08.41827 00 38 10.794 +06 45 47.57 23.2w 15RO281 568 C~2nvu 2015 10 09.33525 00 38 06.259 +06 45 18.31 23.4w 15RO281 568 C~2nvu 2015 11 10.46169 00 35 42.510 +06 29 11.38 23.3w 15RO281 568 C~2nvu 2015 12 08.25986 00 34 30.446 +06 19 55.19 23.4w 15RO281 568 C~2nvu 2016 01 01.32226 00 34 27.125 +06 17 51.46 23.4w 15RO281 568 C~2nvu 2016 01 02.27354 00 34 28.224 +06 17 54.31 23.6w 15RO281 568 C~2nvu 2016 09 05.48236 00 47 09.951 +07 42 00.94 23.4w 15RO281 568 C~2nvu 2016 09 06.43656 00 47 05.936 +07 41 37.74 23.4w 15RO281 568 C~2nvu 2016 09 06.47701 00 47 05.756 +07 41 36.68 23.3w 15RO281 568 C~2nvu 2016 09 26.43941 00 45 33.052 +07 32 21.31 23.4w 15RO281 568 C~2nvu 2016 11 04.28877 00 42 27.615 +07 12 17.25 23.5w 15RO281 568 C~2nvu 2016 11 04.34801 00 42 27.358 +07 12 15.56 23.3w 15RO281 568 C~2nvu 2017 01 02.32887 00 40 43.984 +06 57 42.25 23.8w 15RO281 568 C~2nvu 2017 09 16.52330 00 52 51.152 +08 17 43.13 23.5w 15RO281 568 C~2nvu 2017 09 22.47675 00 52 22.991 +08 14 55.23 23.2w 15RO281 568 C~2nvu
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 -0.00 0.00 -0.07
2 0.0136 -10.02 0.09 19.03 -0.08
3 0.0820 -623.46 0.12 107.08 -0.10
4 0.0820 -623.78 -0.03 107.16 -0.04
5 0.0821 -625.98 -0.08 107.38 -0.00
6 0.0821 -625.87 0.21 107.65 0.25
7 0.0986 -903.97 -0.16 125.61 0.01
8 0.0988 -907.56 -0.16 126.10 0.27
9 0.1009 -947.63 0.01 127.99 -0.04
10 0.1011 -950.20 0.02 128.16 -0.04
11 0.1506 -2049.49 -0.11 171.44 0.03
12 0.1556 -2177.39 -0.06 174.76 0.09
13 0.1558 -2180.27 0.01 174.82 0.07
14 0.1559 -2183.12 0.11 174.87 0.01
15 0.1587 -2255.82 -0.01 176.57 -0.06
16 0.1805 -2845.87 -0.07 188.00 -0.10
17 0.2349 -4425.07 0.04 197.68 -0.05
18 0.2351 -4429.44 -0.03 197.74 -0.02
19 0.2376 -4503.09 0.02 197.42 -0.06
20 0.3255 -6854.47 0.08 152.72 0.03
21 0.4016 -8062.59 0.08 65.84 0.00
22 0.4675 -8157.10 -0.06 -28.33 -0.02
23 0.4701 -8140.90 -0.03 -32.19 -0.04
24 1.1469 4275.05 -0.03 163.27 -0.03
25 1.1496 4211.02 0.10 165.11 -0.01
26 1.1497 4208.14 0.01 165.17 -0.04
27 1.2043 2721.95 -0.02 190.30 0.05
28 1.3107 -287.93 0.04 159.34 -0.07
29 1.3108 -292.12 -0.04 159.28 -0.03
30 1.4723 -2050.10 -0.02 -41.31 0.01
31 2.1765 9784.09 -0.02 175.05 0.04
32 2.1928 9332.69 0.01 181.46 0.03
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.
15RO281 quality flag:2 Type: SCATNEAR SCATNEAR CLASSICAL axisobj 44.201 44.210 44.191 ecceobj 0.175 0.176 0.175 incobj 2.374 2.374 2.374 qmin 35.642 35.352 35.854 qmax 52.552 52.831 52.356 amean 43.867 43.880 43.863 amin 43.444 43.438 43.449 amax 44.339 44.353 44.299 emean 0.164 0.170 0.161 emin 0.137 0.140 0.135 emax 0.186 0.192 0.182 imean 5.121 5.083 5.104 imin 3.261 2.981 3.333 imax 6.985 7.179 6.830 excite_mean 0.187 0.192 0.185 fracstop 1.000 1.000 1.000 cjmean 3.057 3.054 3.058 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 180.3 181.9 179.9 kozaiamp 180.0 180.0 180.0