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: 15RM281
# Created Wed May 8 01:17:20 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 2.19y
# First observation: 2015/07/14
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000116 0.017436 0.000009 0.003102 0.020517 0.000000
# Chi-squared of fit: 12.46 DOF: 48 RMS: 0.12
# Min/Max residuals: -0.37 0.33
# Exact a, adot, b, bdot, g, gdot:
1.390943E-05 1.723470E-02 2.248580E-06 3.087497E-03 2.047121E-02 2.718825E-03
# Covariance matrix:
2.0214E-13 4.1395E-14 -1.0797E-14 2.9158E-14 2.0564E-13 4.4734E-12
4.1395E-14 3.6622E-13 -2.3376E-14 8.1524E-14 3.2139E-13 1.2583E-11
-1.0797E-14 -2.3376E-14 1.0569E-13 -8.4621E-14 -2.9848E-14 -1.1975E-12
2.9158E-14 8.1524E-14 -8.4621E-14 1.4704E-13 9.3552E-14 4.4820E-12
2.0564E-13 3.2139E-13 -2.9848E-14 9.3552E-14 4.8133E-13 1.4406E-11
4.4734E-12 1.2583E-11 -1.1975E-12 4.4820E-12 1.4406E-11 6.9274E-10
# lat0 lon0 xBary yBary zBary JD0
2.697624 11.838232 1.002277 0.008373 -0.175559 2457218.063999
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 111.74746 +/- 0.350
Argument of Peri: 248.16507 +/- 0.319
Long of Asc Node: 356.07776 +/- 0.002
Inclination: 10.55728 +/- 0.001
Eccentricity: 0.15148596 +/- 0.0011
Semi-Major Axis: 45.64367717 +/- 0.0160
Time of Perihelion: 2422247.8339 +/- 108.1
Perihelion: 38.72930077 +/- 0.0508
Aphelion: 52.55805357 +/- 0.0523
Period (y) 308.3750 +/- 0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 48.13116188 +/- 0.0016
Ecliptic Y 9.06572456 +/- 0.0003
Ecliptic Z 2.29924588 +/- 0.0001
Ecliptic XDOT -0.00013868 +/- 0.0000
Ecliptic YDOT 0.00232021 +/- 0.0000
Ecliptic ZDOT 0.00042964 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.03144540 +/- 0.0016
Geocenter to KBO 48.84909724 +/- 0.0017
# Hcoef: 7.85
The following table shows the complete astrometric record for 15RM281. 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 (15RM281) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.56321 00 39 17.762 +07 09 47.22 24.8r 15RM281 568 C~2nvt 2015 07 19.53302 00 39 15.413 +07 09 59.32 25.0r 15RM281 568 C~2nvt 2015 08 13.49630 00 38 37.432 +07 08 07.80 24.6r 15RM281 568 C~2nvt 2015 08 20.43431 00 38 19.843 +07 06 48.80 24.7r 15RM281 568 C~2nvt 2015 08 20.48358 00 38 19.708 +07 06 48.19 24.6r 15RM281 568 C~2nvt 2015 09 07.58494 00 37 22.485 +07 01 58.60 24.6w 15RM281 568 C~2nvt 2015 09 09.41265 00 37 15.969 +07 01 23.63 25.2r 15RM281 568 C~2nvt 2015 09 09.45371 00 37 15.815 +07 01 22.83 24.9r 15RM281 568 C~2nvt 2015 09 09.49464 00 37 15.670 +07 01 22.05 24.9r 15RM281 568 C~2nvu 2015 09 10.51481 00 37 11.979 +07 01 02.16 24.8w 15RM281 568 C~2nvu 2015 09 10.51892 00 37 11.967 +07 01 02.12 24.8w 15RM281 568 C~2nvu 2015 09 18.48318 00 36 42.167 +06 58 17.85 24.6w 15RM281 568 C~2nvu 2015 10 08.37093 00 35 23.597 +06 50 42.83 24.4w 15RM281 568 C~2nvu 2015 10 08.42353 00 35 23.378 +06 50 41.51 24.8w 15RM281 568 C~2nvu 2015 10 09.34050 00 35 19.744 +06 50 19.78 25.0w 15RM281 568 C~2nvu 2015 12 08.26533 00 32 24.506 +06 31 25.58 25.5w 15RM281 568 C~2nvu 2016 01 02.27874 00 32 18.315 +06 29 59.51 25.4w 15RM281 568 C~2nvu 2016 09 05.47832 00 40 52.334 +07 35 45.38 25.2w 15RM281 568 C~2nvu 2016 09 06.43252 00 40 49.021 +07 35 28.32 24.6w 15RM281 568 C~2nvu 2016 09 06.47297 00 40 48.867 +07 35 27.46 24.4w 15RM281 568 C~2nvu 2016 09 26.44346 00 39 33.666 +07 28 33.54 25.1w 15RM281 568 C~2nvu 2016 09 27.47990 00 39 29.565 +07 28 09.96 24.8w 15RM281 568 C~2nvu 2016 12 29.25523 00 35 37.818 +07 02 51.56 24.9w 15RM281 568 C~2nvu 2017 01 03.22553 00 35 40.790 +07 02 59.75 25.3w 15RM281 568 C~2nvu 2017 01 28.26808 00 36 24.455 +07 06 46.72 25.7w 15RM281 568 C~2nvu 2017 09 16.50931 00 43 38.053 +08 05 25.19 24.8w 15RM281 568 C~2nvu 2017 09 22.46275 00 43 15.256 +08 03 19.70 24.6w 15RM281 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 -0.12 0.00 0.03
2 0.0136 -27.41 0.01 24.85 -0.17
3 0.0820 -591.09 -0.03 144.19 -0.17
4 0.1009 -862.89 -0.05 174.37 0.02
5 0.1011 -864.97 -0.01 174.60 0.02
6 0.1506 -1762.09 0.03 243.17 -0.01
7 0.1556 -1865.04 -0.09 249.18 0.03
8 0.1558 -1867.46 -0.14 249.34 0.04
9 0.1559 -1869.75 -0.06 249.47 0.02
10 0.1587 -1928.10 -0.05 252.81 0.06
11 0.1587 -1928.28 0.01 252.84 0.07
12 0.1805 -2400.85 0.08 276.43 -0.01
13 0.2349 -3655.76 0.10 319.18 -0.02
14 0.2351 -3659.28 -0.01 319.25 -0.05
15 0.2376 -3717.60 0.03 320.62 -0.03
16 0.4016 -6565.84 -0.08 309.94 0.09
17 0.4701 -6684.76 0.19 267.38 0.33
18 1.1469 1905.07 0.14 882.06 -0.35
19 1.1495 1853.06 0.22 885.65 -0.07
20 1.1497 1850.62 0.03 885.75 -0.12
21 1.2043 659.52 0.07 943.21 0.07
22 1.2072 594.17 0.16 945.44 -0.01
23 1.4612 -3173.74 0.03 905.48 -0.07
24 1.4748 -3129.84 0.04 895.56 0.21
25 1.5433 -2442.88 -0.37 848.06 0.10
26 2.1764 4868.27 -0.04 1558.16 -0.07
27 2.1927 4507.38 -0.11 1574.69 0.07
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.
15RM281 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.076 46.124 46.029 ecceobj 0.147 0.150 0.144 incobj 10.500 10.500 10.500 qmin 38.315 38.234 38.414 qmax 53.731 53.914 53.574 amean 45.860 45.908 45.812 amin 45.470 45.519 45.418 amax 46.284 46.347 46.262 emean 0.147 0.150 0.144 emin 0.134 0.137 0.130 emax 0.162 0.164 0.159 imean 11.060 11.065 11.059 imin 10.541 10.541 10.546 imax 11.562 11.573 11.565 excite_mean 0.242 0.244 0.240 fracstop 1.000 1.000 1.000 cjmean 3.052 3.052 3.053 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 178.7 178.7 178.7 kozaiamp 180.0 180.0 180.0