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: 15RH278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 2.42y
# First observation: 2015/06/23
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000050 0.010985 0.000002 -0.000959 0.015957 0.000000
# Chi-squared of fit: 17.00 DOF: 56 RMS: 0.13
# Min/Max residuals: -0.27 0.37
# Exact a, adot, b, bdot, g, gdot:
1.107645E-05 1.078402E-02 -1.130842E-06 -9.420557E-04 1.576922E-02 -4.008644E-03
# Covariance matrix:
2.3976E-13 2.1704E-14 2.2008E-15 -1.3435E-14 2.1905E-13 6.8940E-12
2.1704E-14 1.5122E-13 2.4356E-15 -1.2751E-14 1.5411E-13 6.4959E-12
2.2008E-15 2.4356E-15 1.0000E-13 -6.9052E-14 5.4323E-15 4.1608E-13
-1.3435E-14 -1.2751E-14 -6.9052E-14 9.0331E-14 -2.9042E-14 -1.9023E-12
2.1905E-13 1.5411E-13 5.4323E-15 -2.9042E-14 3.6882E-13 1.4811E-11
6.8940E-12 6.4959E-12 4.1608E-13 -1.9023E-12 1.4811E-11 9.6189E-10
# lat0 lon0 xBary yBary zBary JD0
0.476212 6.637491 1.012672 -0.000622 0.086156 2457197.071038
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 268.87142 +/- 0.385
Argument of Peri: 306.16355 +/- 0.208
Long of Asc Node: 191.12528 +/- 0.002
Inclination: 5.05068 +/- 0.002
Eccentricity: 0.38839994 +/- 0.0016
Semi-Major Axis: 55.35625219 +/- 0.0821
Time of Perihelion: 2495270.8145 +/- 136.7
Perihelion: 33.85588692 +/- 0.1033
Aphelion: 76.85661745 +/- 0.1454
Period (y) 411.8682 +/- 0.92
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 63.01544159 +/- 0.0024
Ecliptic Y 6.31437098 +/- 0.0003
Ecliptic Z 0.52704888 +/- 0.0000
Ecliptic XDOT -0.00090882 +/- 0.0000
Ecliptic YDOT 0.00177325 +/- 0.0000
Ecliptic ZDOT -0.00016927 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 63.33320567 +/- 0.0024
Geocenter to KBO 63.41468427 +/- 0.0024
# Hcoef: 7.14
The following table shows the complete astrometric record for 15RH278. 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 (15RH278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.57026 00 23 37.310 +03 04 21.48 26.0r 15RH278 568 C~2lVQ 2015 07 14.58775 00 23 39.132 +03 04 31.22 25.8r 15RH278 568 C~2lVQ 2015 07 19.56683 00 23 35.900 +03 04 09.85 24.9r 15RH278 568 C~2lVQ 2015 08 11.46704 00 23 04.413 +03 00 43.38 25.3r 15RH278 568 C~2lVQ 2015 09 08.37633 00 21 56.097 +02 53 13.64 25.2r 15RH278 568 C~2lVQ 2015 09 08.48053 00 21 55.786 +02 53 11.62 24.8r 15RH278 568 C~2lVQ 2015 09 08.52274 00 21 55.672 +02 53 10.85 25.0r 15RH278 568 C~2lVQ 2015 09 09.49961 00 21 52.866 +02 52 52.24 25.5w 15RH278 568 C~2lVQ 2015 09 10.44054 00 21 50.139 +02 52 34.21 25.3w 15RH278 568 C~2lVQ 2015 09 16.42148 00 21 32.413 +02 50 37.34 24.9w 15RH278 568 C~2lVQ 2015 10 03.33607 00 20 40.499 +02 44 51.94 25.0r 15RH278 568 C~2lVQ 2015 10 03.34821 00 20 40.456 +02 44 51.76 24.9w 15RH278 568 C~2lVQ 2015 10 03.40227 00 20 40.307 +02 44 50.60 25.6w 15RH278 568 C~2lVQ 2015 10 07.31809 00 20 28.275 +02 43 30.35 25.7r 15RH278 568 C~2lVQ 2015 11 05.24318 00 19 07.504 +02 34 25.18 25.2w 15RH278 568 C~2lVQ 2015 11 07.21298 00 19 02.892 +02 33 53.47 25.6w 15RH278 568 C~2lVQ 2015 11 07.26546 00 19 02.771 +02 33 52.92 25.5w 15RH278 568 C~2lVQ 2015 12 07.29979 00 18 14.598 +02 28 11.38 25.6w 15RH278 568 C~2lVQ 2016 01 01.21869 00 18 13.009 +02 27 34.57 25.2w 15RH278 568 C~2lVQ 2016 09 05.55294 00 24 25.633 +03 05 43.73 25.1w 15RH278 568 C~2lVQ 2016 09 07.49232 00 24 20.146 +03 05 07.21 25.3w 15RH278 568 C~2lVQ 2016 09 07.53863 00 24 20.011 +03 05 06.52 25.0w 15RH278 568 C~2lVQ 2016 11 03.22971 00 21 33.233 +02 46 32.81 24.7r 15RH278 568 C~2lVQ 2016 12 24.23886 00 20 30.304 +02 38 56.99 25.6w 15RH278 568 C~2lVQ 2016 12 24.25172 00 20 30.344 +02 38 57.06 25.2w 15RH278 568 C~2lVQ 2017 01 02.23941 00 20 34.729 +02 39 16.77 25.6w 15RH278 568 C~2lVQ 2017 01 26.22433 00 21 09.882 +02 42 40.22 25.0w 15RH278 568 C~2lVQ 2017 01 27.25763 00 21 12.096 +02 42 53.75 25.3w 15RH278 568 C~2lVQ 2017 09 15.45412 00 26 22.462 +03 14 33.89 24.9w 15RH278 568 C~2lVQ 2017 09 22.51940 00 26 00.880 +03 12 11.08 24.9w 15RH278 568 C~2lVQ 2017 11 22.37572 00 23 17.327 +02 53 50.96 25.6w 15RH278 568 C~2lVQ
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 -0.05 0.00 0.04
2 0.0575 28.92 0.11 -1.85 -0.18
3 0.0712 -24.00 -0.07 -2.32 -0.18
4 0.1339 -538.84 -0.00 -5.29 0.15
5 0.2103 -1656.70 -0.01 -13.11 0.13
6 0.2106 -1661.77 -0.12 -13.12 0.13
7 0.2107 -1663.65 0.02 -13.15 0.10
8 0.2134 -1709.62 0.06 -13.59 0.03
9 0.2159 -1754.28 0.00 -13.97 0.04
10 0.2323 -2044.43 -0.21 -16.10 0.37
11 0.2786 -2895.54 -0.06 -25.08 -0.05
12 0.2787 -2896.20 -0.10 -24.99 0.04
13 0.2788 -2898.71 0.16 -25.17 -0.13
14 0.2895 -3096.07 0.28 -27.41 -0.04
15 0.3687 -4423.74 -0.12 -48.11 -0.12
16 0.3741 -4499.79 -0.03 -49.81 -0.20
17 0.3743 -4501.68 0.11 -49.59 0.04
18 0.4565 -5300.28 -0.01 -76.79 -0.08
19 0.5247 -5336.77 -0.04 -101.14 -0.06
20 1.2046 697.29 -0.07 -210.79 0.11
21 1.2099 607.36 0.03 -211.83 -0.15
22 1.2100 605.23 0.10 -211.66 0.02
23 1.3653 -2130.02 0.22 -245.50 -0.11
24 1.5049 -3176.51 -0.27 -290.46 -0.09
25 1.5049 -3175.93 0.28 -290.63 -0.26
26 1.5296 -3107.78 0.03 -298.58 0.20
27 1.5952 -2543.45 -0.00 -320.48 0.04
28 1.5980 -2507.63 -0.15 -321.20 0.22
29 2.2310 2514.23 0.06 -415.49 0.01
30 2.2504 2160.84 -0.05 -418.97 -0.06
31 2.4170 -524.41 -0.08 -460.60 0.06
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.
15RH278 quality flag:3 Type: 5:2EEE 5:2EEE 5:2EEE axisobj 55.882 56.128 55.645 ecceobj 0.383 0.388 0.378 incobj 5.012 5.012 5.012 qmin 33.338 33.449 33.484 qmax 78.775 79.253 78.781 amean 55.462 55.464 55.462 amin 54.768 54.568 54.757 amax 56.355 56.618 56.397 emean 0.386 0.386 0.384 emin 0.375 0.375 0.372 emax 0.398 0.400 0.397 imean 4.533 5.245 4.493 imin 4.093 5.036 4.104 imax 5.133 5.485 5.122 excite_mean 0.394 0.397 0.392 fracstop 1.000 1.000 1.000 cjmean 3.039 3.036 3.041 libcent 0 179.2 180.9 180.5 libamp 0 77.3 147.0 82.8 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 261.6 154.9 252.7 kozaiamp 180.0 180.0 180.0