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: 15RU245
# Created Fri Nov 22 02:10:26 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 35
# Arc: 4.57y
# First observation: 2015/06/23
# Last observation: 2020/01/18
Preliminary a, adot, b, bdot, g, gdot:
0.000096 0.065664 -0.000050 -0.015871 0.045801 0.000000
# Chi-squared of fit: 5.38 DOF: 62 RMS: 0.07
# Min/Max residuals: -0.17 0.26
# Exact a, adot, b, bdot, g, gdot:
2.176066E-05 6.288861E-02 -5.300255E-06 -1.532552E-02 4.379081E-02 -5.024937E-03
# Covariance matrix:
1.8964E-13 5.4516E-16 -8.7242E-16 3.1448E-15 1.2857E-13 -5.2502E-14
5.4516E-16 2.7762E-13 2.6602E-14 -6.0746E-14 1.5966E-13 1.0388E-12
-8.7242E-16 2.6602E-14 7.8029E-14 -5.0900E-14 1.3402E-14 1.3729E-13
3.1448E-15 -6.0746E-14 -5.0900E-14 7.1503E-14 -2.9548E-14 -3.1624E-13
1.2857E-13 1.5966E-13 1.3402E-14 -2.9548E-14 2.0297E-13 5.0643E-13
-5.2502E-14 1.0388E-12 1.3729E-13 -3.1624E-13 5.0643E-13 5.4047E-12
# lat0 lon0 xBary yBary zBary JD0
0.233984 7.326098 1.011502 -0.000313 0.098971 2457197.032948
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 342.74121 +/- 0.004
Argument of Peri: 210.83574 +/- 0.008
Long of Asc Node: 185.73822 +/- 0.000
Inclination: 13.76640 +/- 0.000
Eccentricity: 0.28842209 +/- 0.0000
Semi-Major Axis: 30.90349413 +/- 0.0016
Time of Perihelion: 2460198.7752 +/- 0.7
Perihelion: 21.99024389 +/- 0.0015
Aphelion: 39.81674436 +/- 0.0023
Period (y) 171.7986 +/- 0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 22.67657744 +/- 0.0002
Ecliptic Y 1.89639574 +/- 0.0000
Ecliptic Z 0.09319586 +/- 0.0000
Ecliptic XDOT -0.00081156 +/- 0.0000
Ecliptic YDOT 0.00385397 +/- 0.0000
Ecliptic ZDOT -0.00095938 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 22.75592596 +/- 0.0002
Geocenter to KBO 22.83584139 +/- 0.0002
# Hcoef: 9.28
The following table shows the complete astrometric record for 15RU245. 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 (15RU245) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.53217 00 26 32.347 +03 07 20.70 23.3r 15RU245 568 C~2Gdr 2015 06 23.55117 00 26 32.398 +03 07 20.96 23.3r 15RU245 568 C~2Gdr 2015 07 14.59185 00 27 08.684 +03 08 07.82 23.2r 15RU245 568 C~2Gdr 2015 07 19.57093 00 27 07.137 +03 07 12.58 23.2r 15RU245 568 C~2Gdr 2015 09 08.37633 00 23 38.143 +02 36 41.89 23.0r 15RU245 568 C~2Gdr 2015 09 08.48053 00 23 37.417 +02 36 36.32 23.0r 15RU245 568 C~2Gdr 2015 09 08.52274 00 23 37.128 +02 36 34.05 23.0r 15RU245 568 C~2Gdr 2015 09 09.49962 00 23 30.474 +02 35 41.47 22.1w 15RU245 568 C~2Gdr 2015 09 16.42148 00 22 41.759 +02 29 18.54 23.1w 15RU245 568 C~2Gdr 2015 10 03.33607 00 20 36.581 +02 13 01.73 23.1r 15RU245 568 C~2Gdr 2015 10 03.34821 00 20 36.487 +02 13 00.95 23.3w 15RU245 568 C~2Gdr 2015 10 03.40228 00 20 36.074 +02 12 57.86 22.5w 15RU245 568 C~2Gdr 2015 10 07.28650 00 20 07.293 +02 09 13.03 23.0r 15RU245 568 C~2Gdr 2015 10 07.31809 00 20 07.054 +02 09 11.19 22.9r 15RU245 568 C~2Gdr 2015 10 07.37159 00 20 06.653 +02 09 08.16 22.2r 15RU245 568 C~2Gdr 2015 11 05.24319 00 16 57.208 +01 43 58.20 22.8w 15RU245 568 C~2Gdr 2015 11 07.21299 00 16 46.913 +01 42 32.45 22.4w 15RU245 568 C~2Gdr 2015 11 07.26547 00 16 46.634 +01 42 30.19 22.6w 15RU245 568 C~2Gdr 2015 11 10.33048 00 16 31.484 +01 40 22.65 22.9w 15RU245 568 C~2Gdr 2015 11 10.34252 00 16 31.434 +01 40 22.19 22.6w 15RU245 568 C~2Gdr 2016 09 07.47209 00 39 05.227 +03 15 24.96 15RU245 568 C~2Gdr 2016 09 07.51840 00 39 04.913 +03 15 22.55 15RU245 568 C~2Gdr 2016 09 26.54877 00 36 49.900 +02 57 35.96 23.1w 15RU245 568 C~2Gdr 2016 10 29.31731 00 32 53.125 +02 27 09.87 15RU245 568 C~2Gdr 2016 10 29.38315 00 32 52.683 +02 27 06.59 15RU245 568 C~2Gdr 2016 11 03.38568 00 32 21.831 +02 23 06.73 15RU245 568 C~2Gdr 2016 11 03.44362 00 32 21.482 +02 23 03.88 15RU245 568 C~2Gdr 2016 11 03.45063 00 32 21.435 +02 23 03.70 15RU245 568 C~2Gdr 2016 12 25.25628 00 30 15.873 +02 03 29.07 15RU245 568 C~2Gdr 2016 12 25.27553 00 30 15.925 +02 03 29.32 15RU245 568 C~2Gdr 2016 12 26.23936 00 30 17.617 +02 03 34.24 15RU245 568 C~2Gdr 2016 12 29.22742 00 30 23.908 +02 03 55.93 15RU245 568 C~2Gdr 2017 01 02.29869 00 30 34.900 +02 04 41.18 15RU245 568 C~2Gdr 2020 01 18.093420 01 16 45.188 +03 57 47.06 23.2G 15RU245 G37 C~3jiG 2020 01 18.149840 01 16 45.327 +03 57 48.09 15RU245 G37 C~3jiG
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 0.20 0.00 -0.05
2 0.0001 0.80 0.05 -0.06 0.03
3 0.0577 518.59 -0.02 -171.72 0.07
4 0.0713 475.48 -0.01 -213.31 0.00
5 0.2104 -3124.43 -0.05 -657.05 0.01
6 0.2107 -3136.63 -0.11 -657.86 0.05
7 0.2108 -3141.51 -0.05 -658.24 0.02
8 0.2135 -3253.91 -0.03 -667.07 0.02
9 0.2324 -4076.13 -0.01 -729.83 -0.01
10 0.2787 -6187.02 -0.01 -883.90 0.02
11 0.2788 -6188.63 -0.07 -884.06 -0.04
12 0.2789 -6195.54 -0.07 -884.44 0.02
13 0.2895 -6681.20 0.02 -919.97 -0.03
14 0.2896 -6685.22 -0.02 -920.24 -0.04
15 0.2898 -6691.95 0.02 -920.64 -0.00
16 0.3688 -9903.23 0.04 -1181.21 -0.04
17 0.3742 -10079.35 0.18 -1198.72 -0.05
18 0.3744 -10084.10 0.13 -1199.14 -0.05
19 0.3827 -10343.85 -0.17 -1226.15 -0.02
20 0.3828 -10344.73 -0.03 -1226.28 -0.05
21 1.2100 10566.15 0.04 -3998.38 0.06
22 1.2101 10560.86 -0.00 -3998.75 0.11
23 1.2622 8277.13 -0.01 -4184.96 0.01
24 1.3519 4292.54 0.05 -4467.09 -0.06
25 1.3521 4285.15 -0.10 -4467.50 -0.01
26 1.3658 3765.37 0.01 -4505.73 0.06
27 1.3659 3759.44 -0.02 -4506.29 -0.10
28 1.3660 3758.72 -0.03 -4506.18 0.06
29 1.5078 1565.16 -0.11 -4843.63 -0.05
30 1.5079 1565.97 0.26 -4843.71 -0.04
31 1.5105 1591.23 0.01 -4849.20 0.09
32 1.5187 1686.48 -0.01 -4866.48 0.08
33 1.5298 1855.80 -0.05 -4889.92 0.01
34 4.5710 43425.91 ( 0.95) -15004.24 ( -0.09)
35 4.5712 43428.33 -0.01 -15004.09 -0.04
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.
15RU245 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 31.118 31.122 31.114 ecceobj 0.293 0.293 0.293 incobj 13.716 13.716 13.716 qmin 21.938 21.944 21.919 qmax 40.605 40.534 40.794 amean 31.169 31.193 31.884 amin 30.847 30.681 30.885 amax 32.058 32.315 34.362 emean 0.252 0.248 0.211 emin 0.173 0.162 0.142 emax 0.295 0.294 0.293 imean 15.499 15.554 16.811 imin 13.482 13.482 13.481 imax 18.500 18.733 19.101 excite_mean 0.369 0.368 0.363 fracstop 0.018 0.020 0.032 cjmean 2.866 2.867 2.870 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 239.7 239.4 251.8 kozaiamp 24.6 24.7 42.1