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: 15GO57
# Created Sun Nov 24 02:10:17 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 38 observations of 38
# Arc: 9.29y
# First observation: 2015/02/17
# Last observation: 2024/06/03
# Chi-squared of fit: 5.32 DOF: 70 RMS: 0.07
# Min/Max residuals: -0.20 0.16
# Exact a, adot, b, bdot, g, gdot:
1.448976E-05 2.086918E-02 2.546156E-07 1.939208E-04 2.261468E-02 1.845137E-04
# Covariance matrix:
1.4064E-13 -6.6677E-14 2.4064E-16 -7.3387E-16 6.3507E-14 -3.8346E-13
-6.6677E-14 1.1873E-13 -8.3505E-16 1.3012E-15 2.1947E-14 6.7526E-13
2.4064E-16 -8.3505E-16 5.1958E-14 -9.4452E-15 -3.9588E-16 -4.9024E-15
-7.3387E-16 1.3012E-15 -9.4452E-15 6.5070E-15 1.6622E-16 7.8746E-15
6.3507E-14 2.1947E-14 -3.9588E-16 1.6622E-16 9.8086E-14 8.2989E-14
-3.8346E-13 6.7526E-13 -4.9024E-15 7.8746E-15 8.2989E-14 4.0883E-12
# lat0 lon0 xBary yBary zBary JD0
0.958083 -153.186494 0.840694 0.008737 -0.513767 2457071.023648
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 193.95103 +/- 0.147
Argument of Peri: 226.79647 +/- 0.147
Long of Asc Node: 145.86643 +/- 0.010
Inclination: 1.09477 +/- 0.000
Eccentricity: 0.03297765 +/- 0.0001
Semi-Major Axis: 43.35307074 +/- 0.0024
Time of Perihelion: 2505161.2910 +/- 42.8
Perihelion: 41.92338829 +/- 0.0036
Aphelion: 44.78275320 +/- 0.0037
Period (y) 285.4552 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.29964523 +/- 0.0006
Ecliptic Y -19.42535631 +/- 0.0003
Ecliptic Z 0.73939129 +/- 0.0000
Ecliptic XDOT 0.00111645 +/- 0.0000
Ecliptic YDOT -0.00227035 +/- 0.0000
Ecliptic ZDOT 0.00002394 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.74318962 +/- 0.0005
Geocenter to KBO 44.21908023 +/- 0.0006
# Hcoef: 7.38
The following table shows the complete astrometric record for 15GO57. 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 (15GO57) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.52287 13 40 54.914 -09 26 34.78 23.5r 15GO57 568 C~2nvW 2015 02 17.56399 13 40 54.833 -09 26 34.25 23.8r 15GO57 568 C~2nvW 2015 02 20.59770 13 40 48.855 -09 25 56.13 23.9r 15GO57 568 C~2nvW 2015 03 18.50144 13 39 32.728 -09 18 11.98 24.2r 15GO57 568 C~2nvW 2015 03 18.54235 13 39 32.566 -09 18 11.21 23.7r 15GO57 568 C~2nvW 2015 03 20.54594 13 39 25.137 -09 17 26.87 23.7r 15GO57 568 C~2nvW 2015 04 11.48071 13 37 55.339 -09 08 39.43 24.3r 15GO57 568 C~2nvW 2015 04 12.38760 13 37 51.445 -09 08 16.66 23.6r 15GO57 568 C~2nvW 2015 04 12.43323 13 37 51.237 -09 08 15.41 23.9r 15GO57 568 C~2nvW 2015 04 12.47547 13 37 51.050 -09 08 14.42 24.0r 15GO57 568 C~2nvW 2015 04 18.44608 13 37 25.196 -09 05 44.53 23.8r 15GO57 568 C~2nvW 2015 04 18.49382 13 37 24.982 -09 05 43.42 24.0r 15GO57 568 C~2nvW 2015 05 17.25497 13 35 27.645 -08 54 33.45 23.9r 15GO57 568 C~2nvW 2015 05 25.39688 13 34 59.647 -08 51 56.99 23.6r 15GO57 568 C~2nvW 2015 05 25.45500 13 34 59.455 -08 51 55.81 24.0r 15GO57 568 C~2nvW 2015 06 21.34643 13 33 55.438 -08 46 10.80 24.0r 15GO57 568 C~2nvW 2015 07 12.29701 13 33 42.758 -08 45 22.68 24.2r 15GO57 568 C~2nvW 2015 07 19.28682 13 33 46.499 -08 45 53.29 24.5r 15GO57 568 C~2nvW 2016 02 04.62644 13 45 44.232 -09 53 32.66 24.0w 15GO57 568 C~2nvW 2016 02 04.63139 13 45 44.223 -09 53 32.63 24.0w 15GO57 568 C~2nvW 2016 02 11.59752 13 45 37.484 -09 52 44.26 24.0w 15GO57 568 C~2nvW 2016 02 11.60966 13 45 37.465 -09 52 44.23 23.9w 15GO57 568 C~2nvW 2016 03 11.60487 13 44 29.295 -09 45 42.88 24.0w 15GO57 568 C~2nvW 2016 04 03.47768 13 43 02.103 -09 37 11.63 23.9w 15GO57 568 C~2nvW 2016 04 09.45883 13 42 36.679 -09 34 44.86 24.1w 15GO57 568 C~2nvW 2016 05 01.46556 13 41 02.015 -09 25 44.76 23.9w 15GO57 568 C~2nvW 2016 05 02.33963 13 40 58.386 -09 25 24.20 23.9w 15GO57 568 C~2nvW 2016 05 07.34298 13 40 37.855 -09 23 28.62 24.1w 15GO57 568 C~2nvW 2016 06 27.32010 13 38 18.751 -09 10 55.75 24.0w 15GO57 568 C~2nvW 2016 06 27.32513 13 38 18.755 -09 10 55.73 24.2w 15GO57 568 C~2nvW 2016 07 07.31590 13 38 12.654 -09 10 33.38 15GO57 568 C~2nvW 2017 02 27.64150 13 49 40.281 -10 14 21.64 15GO57 568 C~2nvW 2017 02 27.64549 13 49 40.272 -10 14 21.46 15GO57 568 C~2nvW 2017 03 30.49241 13 47 56.358 -10 04 11.45 23.8w 15GO57 568 C~2nvW 2017 06 25.27303 13 42 53.771 -09 36 21.23 23.9w 15GO57 568 C~2nvW 2024 06 03.195810 14 16 02.603 -12 30 56.27 23.8G 15GO57 G37 C~83DF 2024 06 03.240060 14 16 02.459 -12 30 55.57 15GO57 G37 C~83DF 2024 06 03.288280 14 16 02.292 -12 30 54.82 15GO57 G37 C~83DF
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 -0.03
2 0.0001 0.00 -0.02 0.00 0.01
3 0.0084 0.00 -0.03 0.00 -0.04
4 0.0793 0.00 0.03 0.00 0.06
5 0.0795 0.00 -0.10 0.00 -0.07
6 0.0849 0.00 0.05 0.00 0.01
7 0.1450 0.00 -0.09 0.00 0.01
8 0.1475 0.00 0.08 0.00 0.04
9 0.1476 0.00 -0.03 0.00 0.14
10 0.1477 0.00 -0.05 0.00 0.07
11 0.1641 0.00 -0.05 0.00 0.14
12 0.1642 0.00 -0.10 0.00 0.05
13 0.2429 0.00 0.08 0.00 -0.04
14 0.2652 0.00 0.03 0.00 -0.08
15 0.2654 0.00 0.02 0.00 0.05
16 0.3390 0.00 0.03 0.00 -0.06
17 0.3964 0.00 0.02 0.00 0.04
18 0.4155 0.00 0.11 0.00 0.01
19 0.9640 0.00 0.03 0.00 -0.06
20 0.9640 0.00 -0.05 0.00 -0.06
21 0.9831 0.00 -0.02 0.00 0.01
22 0.9831 0.00 -0.06 0.00 -0.07
23 1.0625 0.00 0.03 0.00 -0.01
24 1.1251 0.00 -0.00 0.00 -0.00
25 1.1415 0.00 -0.05 0.00 -0.02
26 1.2018 0.00 -0.00 0.00 -0.03
27 1.2042 0.00 0.16 0.00 -0.08
28 1.2179 0.00 0.05 0.00 -0.09
29 1.3574 0.00 -0.20 0.00 0.09
30 1.3574 0.00 -0.05 0.00 0.09
31 1.3848 0.00 -0.08 0.00 -0.13
32 2.0291 0.00 -0.00 0.00 0.01
33 2.0291 0.00 0.02 0.00 0.13
34 2.1135 0.00 0.05 0.00 -0.01
35 2.3511 0.00 -0.04 0.00 0.00
36 9.2914 0.00 -0.09 0.00 0.04
37 9.2915 0.00 0.06 0.00 0.01
38 9.2916 0.00 0.06 0.00 -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.
15GO57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.972 42.972 42.972 ecceobj 0.042 0.042 0.042 incobj 1.098 1.098 1.098 qmin 40.365 40.365 40.366 qmax 46.293 46.292 46.294 amean 43.248 43.248 43.248 amin 42.911 42.910 42.911 amax 43.600 43.600 43.600 emean 0.046 0.046 0.046 emin 0.026 0.026 0.026 emax 0.062 0.062 0.062 imean 1.953 1.953 1.953 imin 0.940 0.940 0.940 imax 2.624 2.624 2.624 excite_mean 0.058 0.058 0.058 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 185.9 185.9 185.9 kozaiamp 179.9 179.9 179.9