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: 15GT58
# Created Wed May 21 01:10:29 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 34 observations of 34
# Arc: 10.18y
# First observation: 2015/02/17
# Last observation: 2025/04/23
# Chi-squared of fit: 3.74 DOF: 62 RMS: 0.06
# Min/Max residuals: -0.19 0.21
# Exact a, adot, b, bdot, g, gdot:
1.573871E-05 2.377436E-02 6.975369E-08 7.798157E-05 2.406577E-02 -8.554143E-04
# Covariance matrix:
1.7598E-13 -7.3245E-14 -5.3389E-16 -4.7429E-16 9.7258E-14 -2.8080E-13
-7.3245E-14 1.8218E-13 -7.0621E-16 9.5401E-16 3.7193E-14 7.5536E-13
-5.3389E-16 -7.0621E-16 5.4139E-14 -7.7827E-15 -1.0524E-15 -3.0017E-15
-4.7429E-16 9.5401E-16 -7.7827E-15 5.1629E-15 6.2334E-17 4.0727E-15
9.7258E-14 3.7193E-14 -1.0524E-15 6.2334E-17 1.3403E-13 1.5706E-13
-2.8080E-13 7.5536E-13 -3.0017E-15 4.0727E-15 1.5706E-13 3.2232E-12
# lat0 lon0 xBary yBary zBary JD0
2.204278 -154.532451 0.827730 0.020696 -0.534077 2457071.093388
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 312.89870 +/- 0.053
Argument of Peri: 137.33942 +/- 0.064
Long of Asc Node: 120.29872 +/- 0.005
Inclination: 2.18756 +/- 0.000
Eccentricity: 0.06959004 +/- 0.0001
Semi-Major Axis: 44.06186642 +/- 0.0029
Time of Perihelion: 2471047.7968 +/- 18.3
Perihelion: 40.99559921 +/- 0.0036
Aphelion: 47.12813362 +/- 0.0039
Period (y) 292.4843 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.32851190 +/- 0.0006
Ecliptic Y -17.33699102 +/- 0.0003
Ecliptic Z 1.59822654 +/- 0.0000
Ecliptic XDOT 0.00124747 +/- 0.0000
Ecliptic YDOT -0.00240549 +/- 0.0000
Ecliptic ZDOT 0.00000521 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.09754540 +/- 0.0005
Geocenter to KBO 41.55284097 +/- 0.0006
# Hcoef: 7.33
The following table shows the complete astrometric record for 15GT58. 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 (15GT58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.59261 13 37 39.619 -07 47 41.97 23.5r 15GT58 568 C~2nvb 2015 02 17.63360 13 37 39.534 -07 47 41.37 23.5r 15GT58 568 C~2nvb 2015 02 20.62674 13 37 33.240 -07 46 55.98 23.5r 15GT58 568 C~2nvb 2015 03 18.57107 13 36 12.382 -07 38 05.18 23.5r 15GT58 568 C~2nvb 2015 03 18.61845 13 36 12.198 -07 38 04.06 23.7r 15GT58 568 C~2nvb 2015 03 20.57526 13 36 04.529 -07 37 16.22 23.6r 15GT58 568 C~2nvb 2015 04 11.50958 13 34 30.082 -07 27 44.89 23.3r 15GT58 568 C~2nvb 2015 04 13.37381 13 34 21.653 -07 26 55.23 23.5r 15GT58 568 C~2nvb 2015 04 13.41479 13 34 21.466 -07 26 54.18 23.6r 15GT58 568 C~2nvb 2015 04 13.51735 13 34 20.997 -07 26 51.38 23.6r 15GT58 568 C~2nvb 2015 04 19.41451 13 33 54.257 -07 24 15.40 23.5r 15GT58 568 C~2nvb 2015 04 19.53152 13 33 53.721 -07 24 12.36 23.1r 15GT58 568 C~2nvb 2015 04 19.54875 13 33 53.646 -07 24 11.81 23.7r 15GT58 568 C~2nvb 2015 05 18.33721 13 31 52.330 -07 12 51.88 23.4r 15GT58 568 C~2nvb 2015 06 20.28725 13 30 24.339 -07 05 38.50 23.3r 15GT58 568 C~2nvb 2015 06 20.32802 13 30 24.277 -07 05 38.28 23.4r 15GT58 568 C~2nvb 2015 06 22.33199 13 30 21.492 -07 05 27.99 23.7r 15GT58 568 C~2nvb 2015 07 14.28422 13 30 13.163 -07 05 50.69 23.9r 15GT58 568 C~2nvb 2015 07 20.27721 13 30 18.135 -07 06 39.74 23.9r 15GT58 568 C~2nvb 2016 02 04.61026 13 43 06.044 -08 19 24.15 23.7w 15GT58 568 C~2nvb 2016 02 11.59334 13 42 58.837 -08 18 19.88 23.8w 15GT58 568 C~2nvb 2016 03 11.60082 13 41 46.649 -08 10 07.07 23.6w 15GT58 568 C~2nvb 2016 04 03.45339 13 40 14.884 -08 00 46.09 23.4w 15GT58 568 C~2nvb 2016 04 09.43453 13 39 48.181 -07 58 08.58 23.5w 15GT58 568 C~2nvb 2016 05 01.46152 13 38 08.987 -07 48 41.49 23.9w 15GT58 568 C~2nvb 2016 05 02.33557 13 38 05.203 -07 48 20.48 23.8w 15GT58 568 C~2nvb 2016 05 07.33893 13 37 43.813 -07 46 22.18 23.8w 15GT58 568 C~2nvb 2016 05 29.33959 13 36 22.187 -07 39 09.21 23.7w 15GT58 568 C~2nvb 2016 06 04.40200 13 36 04.426 -07 37 41.13 23.8w 15GT58 568 C~2nvb 2016 06 27.33817 13 35 21.620 -07 34 39.79 23.6w 15GT58 568 C~2nvb 2017 03 30.48771 13 45 46.979 -08 32 11.24 15GT58 568 C~2nvb 2025 04 23.360080 14 26 43.242 -12 10 34.12 23.5G 15GT58 G37 C~8sum 2025 04 23.397330 14 26 43.062 -12 10 32.85 15GT58 G37 C~8sum 2025 04 23.440810 14 26 42.861 -12 10 32.06 15GT58 G37 C~8sum
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 -0.02 0.00 0.01
2 0.0001 0.00 -0.03 0.00 0.01
3 0.0083 0.00 -0.01 0.00 0.00
4 0.0793 0.00 -0.03 0.00 0.03
5 0.0795 0.00 0.02 0.00 -0.00
6 0.0848 0.00 -0.00 0.00 -0.01
7 0.1449 0.00 -0.00 0.00 0.04
8 0.1500 0.00 -0.04 0.00 0.02
9 0.1501 0.00 -0.01 0.00 -0.01
10 0.1504 0.00 0.05 0.00 0.05
11 0.1665 0.00 -0.01 0.00 -0.02
12 0.1668 0.00 0.04 0.00 -0.06
13 0.1669 0.00 0.10 0.00 0.03
14 0.2457 0.00 -0.02 0.00 0.10
15 0.3359 0.00 -0.02 0.00 -0.02
16 0.3360 0.00 -0.00 0.00 -0.03
17 0.3415 0.00 -0.00 0.00 0.06
18 0.4016 0.00 0.01 0.00 -0.13
19 0.4180 0.00 -0.11 0.00 0.03
20 0.9638 0.00 -0.00 0.00 0.04
21 0.9829 0.00 -0.04 0.00 -0.06
22 1.0623 0.00 -0.03 0.00 0.01
23 1.1249 0.00 0.01 0.00 -0.02
24 1.1413 0.00 0.04 0.00 0.01
25 1.2016 0.00 -0.08 0.00 0.01
26 1.2040 0.00 0.10 0.00 -0.17
27 1.2176 0.00 -0.03 0.00 0.00
28 1.2779 0.00 -0.04 0.00 0.07
29 1.2945 0.00 -0.03 0.00 0.06
30 1.3573 0.00 0.05 0.00 0.01
31 2.1133 0.00 -0.03 0.00 0.04
32 10.1787 0.00 0.01 0.00 -0.19
33 10.1788 0.00 -0.03 0.00 0.21
34 10.1789 0.00 0.05 0.00 -0.03
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.
15GT58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.646 43.646 43.646 ecceobj 0.066 0.066 0.066 incobj 2.188 2.188 2.188 qmin 40.403 40.403 40.403 qmax 47.714 47.699 47.686 amean 43.941 43.941 43.941 amin 43.593 43.596 43.596 amax 44.305 44.298 44.306 emean 0.061 0.061 0.061 emin 0.044 0.044 0.044 emax 0.077 0.077 0.077 imean 1.314 1.314 1.314 imin 0.570 0.570 0.570 imax 1.958 1.958 1.958 excite_mean 0.066 0.066 0.066 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 167.0 167.0 167.0 kozaiamp 180.0 180.0 180.0