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: 15GO54
# Created Sun Dec 22 02:10:19 2024
# Orbit generated from Bernstein formalism
# Fitting 37 observations of 37
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000067 0.026119 0.000017 -0.004679 0.026589 0.000000
# Chi-squared of fit: 14.97 DOF: 68 RMS: 0.11
# Min/Max residuals: -0.39 0.38
# Exact a, adot, b, bdot, g, gdot:
1.357623E-05 2.577404E-02 -1.967784E-06 -4.591812E-03 2.639303E-02 -6.804970E-03
# Covariance matrix:
1.5656E-13 -9.0028E-15 2.9104E-15 -1.2676E-14 1.0713E-13 1.3039E-12
-9.0028E-15 2.5027E-13 1.5092E-14 -5.8758E-14 1.6747E-13 5.9806E-12
2.9104E-15 1.5092E-14 9.4749E-14 -6.8798E-14 1.2233E-14 5.3272E-13
-1.2676E-14 -5.8758E-14 -6.8798E-14 9.4192E-14 -4.9233E-14 -2.0582E-12
1.0713E-13 1.6747E-13 1.2233E-14 -4.9233E-14 2.2516E-13 5.0275E-12
1.3039E-12 5.9806E-12 5.3272E-13 -2.0582E-12 5.0275E-12 2.0933E-10
# lat0 lon0 xBary yBary zBary JD0
1.188613 -153.013542 0.842241 0.010752 -0.511188 2457071.023648
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 290.40259 +/- 0.057
Argument of Peri: 274.29351 +/- 0.019
Long of Asc Node: 32.26167 +/- 0.000
Inclination: 10.19471 +/- 0.001
Eccentricity: 0.27112066 +/- 0.0005
Semi-Major Axis: 39.32762837 +/- 0.0120
Time of Perihelion: 2474485.9883 +/- 11.9
Perihelion: 28.66509578 +/- 0.0223
Aphelion: 49.99016096 +/- 0.0256
Period (y) 246.6351 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.59656941 +/- 0.0006
Ecliptic Y -16.67081760 +/- 0.0003
Ecliptic Z 0.78587620 +/- 0.0000
Ecliptic XDOT 0.00182969 +/- 0.0000
Ecliptic YDOT -0.00207231 +/- 0.0000
Ecliptic ZDOT -0.00049077 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.41166979 +/- 0.0006
Geocenter to KBO 37.88879123 +/- 0.0007
# Hcoef: 8.57
The following table shows the complete astrometric record for 15GO54. 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 (15GO54) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.52287 13 41 54.324 -09 17 24.18 22.7r 15GO54 568 C~2lV7 2015 02 17.56399 13 41 54.214 -09 17 23.45 24.8r 15GO54 568 C~2lV7 2015 02 20.59770 13 41 47.257 -09 16 46.90 24.4r 15GO54 568 C~2lV7 2015 03 18.54235 13 40 18.139 -09 08 53.59 24.4r 15GO54 568 C~2lV7 2015 03 20.54594 13 40 09.423 -09 08 07.34 24.5r 15GO54 568 C~2lV7 2015 04 11.48071 13 38 24.089 -08 58 51.57 24.3r 15GO54 568 C~2lV7 2015 04 12.38760 13 38 19.518 -08 58 27.50 24.2r 15GO54 568 C~2lV7 2015 04 12.43323 13 38 19.274 -08 58 26.38 24.5r 15GO54 568 C~2lV7 2015 04 12.47547 13 38 19.051 -08 58 25.19 24.7r 15GO54 568 C~2lV7 2015 04 18.44608 13 37 48.657 -08 55 46.75 24.5r 15GO54 568 C~2lV7 2015 04 18.49382 13 37 48.431 -08 55 45.79 23.8r 15GO54 568 C~2lV7 2015 05 17.25497 13 35 30.421 -08 44 04.98 24.2r 15GO54 568 C~2lV7 2015 05 25.39688 13 34 57.460 -08 41 25.87 24.3r 15GO54 568 C~2lV7 2015 05 25.45500 13 34 57.231 -08 41 24.83 24.6r 15GO54 568 C~2lV7 2015 06 21.34643 13 33 41.759 -08 36 01.82 24.4r 15GO54 568 C~2lV7 2015 06 22.30309 13 33 40.174 -08 35 57.02 24.4r 15GO54 568 C~2lV7 2015 07 12.29701 13 33 26.530 -08 36 08.67 24.4r 15GO54 568 C~2lV7 2016 02 04.62644 13 47 28.458 -10 05 37.73 24.6w 15GO54 568 C~2lV7 2016 02 04.63139 13 47 28.484 -10 05 37.88 24.8w 15GO54 568 C~2lV7 2016 02 11.60966 13 47 20.788 -10 05 03.58 24.8w 15GO54 568 C~2lV7 2016 03 11.60894 13 46 01.266 -09 58 21.92 24.7w 15GO54 568 C~2lV7 2016 04 03.47768 13 44 18.599 -09 49 31.37 24.4w 15GO54 568 C~2lV7 2016 04 09.45883 13 43 48.567 -09 46 56.66 24.3w 15GO54 568 C~2lV7 2016 04 09.46692 13 43 48.524 -09 46 56.69 24.6w 15GO54 568 C~2lV7 2016 05 02.33963 13 41 52.175 -09 37 03.08 24.6w 15GO54 568 C~2lV7 2016 05 02.35585 13 41 52.088 -09 37 02.52 24.9w 15GO54 568 C~2lV7 2016 05 07.34298 13 41 27.842 -09 35 01.16 24.3w 15GO54 568 C~2lV7 2016 05 07.35921 13 41 27.755 -09 35 00.67 24.0w 15GO54 568 C~2lV7 2016 05 29.33148 13 39 54.193 -09 27 26.05 24.6w 15GO54 568 C~2lV7 2016 06 04.39391 13 39 33.523 -09 25 51.08 24.8w 15GO54 568 C~2lV7 2016 06 27.31561 13 38 42.285 -09 22 30.88 24.8w 15GO54 568 C~2lV7 2016 07 07.31185 13 38 34.784 -09 22 29.58 24.7w 15GO54 568 C~2lV7 2017 02 27.64549 13 52 06.591 -10 49 20.25 15GO54 568 C~2lV7 2017 03 30.49241 13 50 04.078 -10 39 09.75 24.0w 15GO54 568 C~2lV7 2017 05 24.25622 13 45 35.441 -10 16 53.05 24.6w 15GO54 568 C~2lV7 2017 06 25.27303 13 44 01.953 -10 10 02.64 25.3w 15GO54 568 C~2lV7 2017 06 25.28243 13 44 01.943 -10 10 02.47 25.2w 15GO54 568 C~2lV7
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 0.38 0.00 -0.16
2 0.0001 -1.78 0.04 0.10 -0.01
3 0.0084 -111.03 -0.00 -2.79 -0.03
4 0.0795 -1512.50 0.03 -35.85 0.02
5 0.0849 -1649.59 -0.03 -39.21 -0.00
6 0.1450 -3305.56 -0.09 -83.98 0.02
7 0.1475 -3377.42 0.12 -86.02 0.13
8 0.1476 -3381.20 0.03 -86.28 0.00
9 0.1477 -3384.71 -0.06 -86.36 0.04
10 0.1641 -3862.03 -0.36 -101.53 0.02
11 0.1642 -3865.51 0.05 -101.84 -0.15
12 0.2429 -6027.28 0.08 -190.36 0.00
13 0.2652 -6540.87 -0.03 -219.76 0.05
14 0.2654 -6544.42 -0.08 -220.03 0.02
15 0.3390 -7705.82 0.03 -326.64 0.01
16 0.3416 -7729.50 -0.00 -330.74 -0.12
17 0.3964 -7913.96 0.05 -415.41 0.09
18 0.9640 5649.62 -0.39 -937.61 0.05
19 0.9640 5650.03 0.09 -937.62 0.05
20 0.9831 5531.52 -0.02 -945.94 0.01
21 1.0625 4290.15 0.10 -988.58 -0.22
22 1.1251 2683.15 -0.00 -1034.46 0.05
23 1.1415 2213.21 0.00 -1048.77 0.02
24 1.1415 2212.63 0.07 -1049.02 -0.21
25 1.2042 393.78 -0.03 -1111.66 0.05
26 1.2042 392.37 -0.16 -1111.60 0.16
27 1.2179 14.11 0.12 -1127.20 -0.01
28 1.2179 12.74 -0.03 -1127.21 0.05
29 1.2781 -1442.27 0.05 -1201.34 -0.01
30 1.2947 -1761.82 -0.22 -1223.07 0.24
31 1.3574 -2541.30 0.12 -1310.13 -0.06
32 1.3848 -2645.30 0.02 -1349.04 -0.01
33 2.0291 10422.31 0.02 -1941.25 0.03
34 2.1135 8513.40 -0.03 -2006.37 0.08
35 2.2635 4330.09 0.01 -2162.98 -0.09
36 2.3511 2893.97 0.05 -2272.45 -0.13
37 2.3512 2893.77 0.09 -2272.34 0.01
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.
15GO54 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.022 39.051 38.993 ecceobj 0.274 0.275 0.272 incobj 10.239 10.239 10.239 qmin 27.931 27.887 28.029 qmax 51.796 51.745 51.736 amean 39.456 39.455 39.456 amin 38.878 38.912 38.858 amax 40.124 40.085 40.157 emean 0.277 0.277 0.276 emin 0.263 0.262 0.262 emax 0.292 0.292 0.290 imean 9.502 9.677 9.285 imin 9.029 9.130 8.712 imax 10.019 10.246 9.978 excite_mean 0.322 0.324 0.319 fracstop 1.000 1.000 1.000 cjmean 2.933 2.931 2.935 libcent 0 180.2 180.2 180.7 libamp 0 126.0 123.3 133.4 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 173.8 175.8 179.5 kozaiamp 180.0 179.9 179.9