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: 15RG281
# Created Sun Nov 24 02:10:26 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 2.42y
# First observation: 2015/06/23
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000062 0.030373 -0.000011 0.004157 0.027231 0.000000
# Chi-squared of fit: 3.65 DOF: 48 RMS: 0.06
# Min/Max residuals: -0.16 0.22
# Exact a, adot, b, bdot, g, gdot:
1.782905E-05 2.942303E-02 2.272225E-06 4.022301E-03 2.660582E-02 -2.717968E-03
# Covariance matrix:
1.9551E-13 2.5099E-15 -9.2699E-15 1.1820E-14 1.3677E-13 1.1412E-12
2.5099E-15 5.8402E-13 -4.5580E-14 1.1619E-13 3.6595E-13 1.0860E-11
-9.2699E-15 -4.5580E-14 1.1794E-13 -8.3308E-14 -3.6221E-14 -9.7648E-13
1.1820E-14 1.1619E-13 -8.3308E-14 1.1331E-13 7.8676E-14 2.5733E-12
1.3677E-13 3.6595E-13 -3.6221E-14 7.8676E-14 3.6290E-13 7.3957E-12
1.1412E-12 1.0860E-11 -9.7648E-13 2.5733E-12 7.3957E-12 2.4025E-10
# lat0 lon0 xBary yBary zBary JD0
3.106851 11.807019 1.000891 -0.009467 0.176202 2457197.106478
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 334.67408 +/- 0.072
Argument of Peri: 61.06833 +/- 0.128
Long of Asc Node: 348.87791 +/- 0.002
Inclination: 8.50032 +/- 0.001
Eccentricity: 0.22026233 +/- 0.0004
Semi-Major Axis: 46.01584536 +/- 0.0084
Time of Perihelion: 2465211.3850 +/- 22.9
Perihelion: 35.88028824 +/- 0.0183
Aphelion: 56.15140249 +/- 0.0200
Period (y) 312.1543 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.76498655 +/- 0.0008
Ecliptic Y 6.66402576 +/- 0.0002
Ecliptic Z 2.03722075 +/- 0.0001
Ecliptic XDOT -0.00091732 +/- 0.0000
Ecliptic YDOT 0.00289572 +/- 0.0000
Ecliptic ZDOT 0.00039821 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.41956365 +/- 0.0008
Geocenter to KBO 37.58576550 +/- 0.0009
# Hcoef: 8.36
The following table shows the complete astrometric record for 15RG281. 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 (15RG281) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.60570 00 38 31.950 +07 31 38.12 24.2r 15RG281 568 C~2nvt 2015 07 19.53303 00 38 48.153 +07 36 48.10 24.2r 15RG281 568 C~2nvt 2015 08 20.43842 00 37 42.542 +07 33 47.88 24.1r 15RG281 568 C~2nvt 2015 08 20.48764 00 37 42.364 +07 33 47.16 24.3r 15RG281 568 C~2nvt 2015 09 07.57672 00 36 31.225 +07 28 01.96 24.5w 15RG281 568 C~2nvt 2015 09 09.40442 00 36 23.063 +07 27 19.21 24.1r 15RG281 568 C~2nvt 2015 09 09.44553 00 36 22.869 +07 27 18.24 24.3r 15RG281 568 C~2nvt 2015 09 09.48644 00 36 22.689 +07 27 17.28 24.1r 15RG281 568 C~2nvt 2015 09 10.51074 00 36 18.037 +07 26 52.70 24.0w 15RG281 568 C~2nvt 2015 09 18.47260 00 35 40.605 +07 23 30.51 24.3w 15RG281 568 C~2nvt 2015 10 08.36042 00 34 01.668 +07 14 01.89 24.3w 15RG281 568 C~2nvt 2015 10 09.33000 00 33 56.824 +07 13 32.87 24.3w 15RG281 568 C~2nvt 2015 11 10.45634 00 31 32.870 +06 58 23.89 24.1w 15RG281 568 C~2nvt 2015 12 08.25463 00 30 21.852 +06 49 48.72 24.3w 15RG281 568 C~2nvt 2016 01 01.31705 00 30 19.858 +06 48 16.86 24.5w 15RG281 568 C~2nvt 2016 01 02.26815 00 30 21.021 +06 48 20.97 24.3w 15RG281 568 C~2nvt 2016 09 05.57499 00 42 41.202 +08 22 32.00 15RG281 568 C~2nvt 2016 09 06.52410 00 42 37.093 +08 22 11.35 15RG281 568 C~2nvt 2016 09 06.56619 00 42 36.898 +08 22 10.39 15RG281 568 C~2nvt 2016 09 27.47990 00 40 57.473 +08 13 15.52 24.0w 15RG281 568 C~2nvt 2016 12 29.25523 00 36 11.446 +07 41 12.87 24.1w 15RG281 568 C~2nvt 2017 01 03.22553 00 36 16.512 +07 41 25.84 24.6w 15RG281 568 C~2nvt 2017 01 27.27188 00 37 16.214 +07 46 18.49 23.7w 15RG281 568 C~2nvt 2017 09 16.50002 00 48 01.548 +09 12 29.01 24.3w 15RG281 568 C~2nvt 2017 09 17.39915 00 47 57.279 +09 12 06.60 24.2w 15RG281 568 C~2nvt 2017 09 22.45345 00 47 32.784 +09 09 55.72 24.3w 15RG281 568 C~2nvt 2017 11 22.33845 00 42 57.232 +08 41 40.76 24.5w 15RG281 568 C~2nvt
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 -0.07 0.00 0.02
2 0.0710 343.30 0.11 190.48 -0.03
3 0.1583 -624.61 0.06 408.03 -0.04
4 0.1585 -627.33 -0.05 408.41 0.01
5 0.2080 -1735.78 0.09 507.35 0.04
6 0.2130 -1864.21 -0.04 515.87 0.02
7 0.2131 -1867.24 -0.11 516.11 0.05
8 0.2132 -1870.08 0.01 516.28 0.01
9 0.2160 -1943.37 -0.08 520.95 -0.06
10 0.2378 -2534.84 0.05 554.54 0.00
11 0.2923 -4112.18 -0.01 613.04 0.07
12 0.2949 -4189.89 -0.05 614.86 0.01
13 0.3829 -6519.04 0.22 628.05 -0.08
14 0.4590 -7695.58 -0.01 574.52 0.03
15 0.5249 -7759.38 -0.16 501.94 -0.03
16 0.5275 -7741.82 0.04 498.84 -0.10
17 1.2046 4603.83 -0.04 1360.15 0.01
18 1.2072 4539.59 0.07 1364.94 0.03
19 1.2073 4536.55 -0.04 1365.19 0.04
20 1.2645 2968.57 -0.00 1449.76 -0.02
21 1.5185 -1694.58 0.11 1350.21 -0.01
22 1.5322 -1620.24 -0.06 1332.46 0.06
23 1.5980 -689.25 -0.05 1252.10 0.04
24 2.2338 10151.96 -0.00 2276.40 0.00
25 2.2363 10084.84 -0.08 2280.20 0.05
26 2.2501 9698.84 0.09 2299.96 -0.11
27 2.4168 5271.67 0.00 2325.39 -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.
15RG281 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 46.558 46.573 46.542 ecceobj 0.227 0.228 0.227 incobj 8.465 8.465 8.465 qmin 35.315 35.298 34.972 qmax 57.624 57.676 58.324 amean 46.189 46.189 46.241 amin 45.750 45.767 45.712 amax 46.740 46.730 46.898 emean 0.222 0.222 0.224 emin 0.211 0.210 0.209 emax 0.234 0.235 0.244 imean 9.074 8.979 9.034 imin 8.277 8.225 8.070 imax 9.814 9.781 10.096 excite_mean 0.272 0.271 0.274 fracstop 1.000 1.000 1.000 cjmean 3.036 3.037 3.036 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 182.0 182.8 181.5 kozaiamp 180.0 179.9 180.0