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: 15RT280
# Created Sun Nov 24 02:10:26 2024
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 21
# Arc: 2.35y
# First observation: 2015/07/19
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000092 0.021909 -0.000007 -0.004128 0.023639 0.000000
# Chi-squared of fit: 6.88 DOF: 34 RMS: 0.10
# Min/Max residuals: -0.33 0.26
# Exact a, adot, b, bdot, g, gdot:
1.462701E-05 2.161808E-02 -3.271715E-06 -4.111768E-03 2.343730E-02 1.256106E-03
# Covariance matrix:
4.3128E-13 2.0913E-13 1.1060E-14 -9.7093E-14 5.2912E-13 1.3166E-11
2.0913E-13 5.7093E-13 2.2889E-14 -1.5964E-13 6.3445E-13 2.1410E-11
1.1060E-14 2.2889E-14 1.4829E-13 -1.2738E-13 3.0538E-14 2.1232E-12
-9.7093E-14 -1.5964E-13 -1.2738E-13 2.6129E-13 -2.2845E-13 -1.2289E-11
5.2912E-13 6.3445E-13 3.0538E-14 -2.2845E-13 1.0189E-12 3.0750E-11
1.3166E-11 2.1410E-11 2.1232E-12 -1.2289E-11 3.0750E-11 1.6298E-09
# lat0 lon0 xBary yBary zBary JD0
1.999820 9.192184 0.971043 0.010719 -0.303876 2457223.092249
# Heliocentric elements and errors
Epoch: 2457220.5000 = 2015/07/17
Mean Anomaly: 139.00145 +/- 1.526
Argument of Peri: 26.61856 +/- 1.521
Long of Asc Node: 198.25463 +/- 0.001
Inclination: 10.91315 +/- 0.001
Eccentricity: 0.05353486 +/- 0.0010
Semi-Major Axis: 41.26303826 +/- 0.0059
Time of Perihelion: 2419838.9703 +/- 410.3
Perihelion: 39.05402743 +/- 0.0430
Aphelion: 43.47204910 +/- 0.0431
Period (y) 265.0635 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.54517166 +/- 0.0018
Ecliptic Y 5.90206215 +/- 0.0003
Ecliptic Z 1.48882939 +/- 0.0001
Ecliptic XDOT -0.00024435 +/- 0.0000
Ecliptic YDOT 0.00251271 +/- 0.0000
Ecliptic ZDOT -0.00047485 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.97839669 +/- 0.0018
Geocenter to KBO 42.66703792 +/- 0.0018
# Hcoef: 8.67
The following table shows the complete astrometric record for 15RT280. 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 (15RT280) followed by the observatory code and reference code for the source of the astrometry.
2015 07 19.59146 00 30 37.139 +05 28 52.83 25.4r 15RT280 568 C~2nvr 2015 09 07.56274 00 28 30.049 +05 15 03.47 25.0w 15RT280 568 C~2nvr 2015 09 09.39169 00 28 22.799 +05 14 14.50 25.1r 15RT280 568 C~2nvr 2015 09 09.43322 00 28 22.642 +05 14 13.39 25.1r 15RT280 568 C~2nvr 2015 09 09.47414 00 28 22.471 +05 14 12.22 24.9r 15RT280 568 C~2nvr 2015 09 10.49775 00 28 18.356 +05 13 44.40 25.5w 15RT280 568 C~2nvr 2015 09 18.45683 00 27 45.366 +05 09 58.90 25.3w 15RT280 568 C~2nvr 2015 09 18.49367 00 27 45.204 +05 09 58.20 25.3w 15RT280 568 C~2nvr 2015 10 08.34456 00 26 19.199 +04 59 57.14 24.9w 15RT280 568 C~2nvr 2015 10 08.39721 00 26 18.978 +04 59 55.75 25.3w 15RT280 568 C~2nvr 2015 10 09.31421 00 26 15.026 +04 59 27.45 25.2w 15RT280 568 C~2nvr 2015 11 10.43997 00 24 12.310 +04 44 13.80 24.7w 15RT280 568 C~2nvr 2015 12 08.23879 00 23 14.258 +04 35 39.95 24.5w 15RT280 568 C~2nvr 2016 09 05.48640 00 33 35.417 +05 32 07.00 26.0w 15RT280 568 C~2nvr 2016 09 06.48188 00 33 31.574 +05 31 41.08 25.4w 15RT280 568 C~2nvr 2016 09 26.43130 00 32 08.580 +05 22 13.23 25.0w 15RT280 568 C~2nvr 2016 11 03.31006 00 29 32.589 +05 03 31.27 25.1w 15RT280 568 C~2nvr 2016 11 03.36248 00 29 32.395 +05 03 30.01 25.5w 15RT280 568 C~2nvr 2016 12 25.23477 00 28 04.477 +04 49 57.74 25.4w 15RT280 568 C~2nvr 2017 01 02.28151 00 28 11.020 +04 49 58.47 25.1w 15RT280 568 C~2nvr 2017 11 22.34219 00 33 34.790 +05 12 33.45 24.6w 15RT280 568 C~2nvr
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 -0.01 0.00 0.10
2 0.1368 -2071.32 -0.05 -12.50 -0.02
3 0.1418 -2190.16 -0.13 -14.67 0.10
4 0.1419 -2192.75 0.04 -14.76 0.04
5 0.1420 -2195.56 -0.04 -14.83 0.00
6 0.1448 -2263.03 -0.01 -16.08 0.04
7 0.1666 -2804.93 0.00 -28.33 -0.33
8 0.1667 -2807.43 0.11 -28.01 0.02
9 0.2211 -4225.81 -0.11 -71.40 -0.04
10 0.2212 -4229.40 0.13 -71.37 0.11
11 0.2237 -4294.86 0.08 -73.97 0.02
12 0.3117 -6342.27 -0.06 -185.74 -0.14
13 0.3878 -7343.93 ( 0.70) -312.99 ( 0.26)
14 1.1332 2523.24 0.04 -870.07 0.04
15 1.1359 2460.29 -0.02 -871.33 0.05
16 1.1905 1097.41 0.01 -905.50 0.03
17 1.2942 -1486.44 0.05 -1017.54 -0.05
18 1.2944 -1489.60 0.03 -1017.55 0.10
19 1.4364 -3017.72 0.26 -1244.65 0.02
20 1.4584 -2927.59 -0.30 -1282.64 -0.05
21 2.3457 2052.99 -0.03 -1945.44 -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.
15RT280 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 41.635 41.658 41.614 ecceobj 0.047 0.050 0.045 incobj 10.859 10.859 10.858 qmin 38.838 38.742 38.871 qmax 44.188 44.425 44.120 amean 41.440 41.463 41.418 amin 41.125 41.143 41.098 amax 41.761 41.787 41.745 emean 0.041 0.044 0.039 emin 0.024 0.026 0.022 emax 0.059 0.063 0.058 imean 12.032 12.028 12.035 imin 10.943 10.941 10.945 imax 12.992 12.989 13.004 excite_mean 0.213 0.213 0.212 fracstop 1.000 1.000 1.000 cjmean 3.018 3.018 3.018 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 178.5 179.0 178.8 kozaiamp 180.0 179.9 179.9