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: 15GS55
# Created Sun Dec 22 02:10:20 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 39 observations of 39
# Arc: 7.26y
# First observation: 2015/02/17
# Last observation: 2022/05/23
# Chi-squared of fit: 7.35 DOF: 72 RMS: 0.08
# Min/Max residuals: -0.16 0.33
# Exact a, adot, b, bdot, g, gdot:
1.582955E-05 2.744192E-02 7.559891E-06 1.257524E-02 2.731971E-02 -2.880308E-03
# Covariance matrix:
1.3560E-13 -4.0142E-14 9.4736E-15 -2.0198E-14 7.9012E-14 -2.0953E-13
-4.0142E-14 1.1021E-13 -2.8148E-14 5.5359E-14 3.4816E-14 5.8278E-13
9.4736E-15 -2.8148E-14 5.9570E-14 -2.7756E-14 -7.9017E-15 -1.6458E-13
-2.0198E-14 5.5359E-14 -2.7756E-14 4.0801E-14 1.3714E-14 3.2465E-13
7.9012E-14 3.4816E-14 -7.9017E-15 1.3714E-14 1.1554E-13 1.4800E-13
-2.0953E-13 5.8278E-13 -1.6458E-13 3.2465E-13 1.4800E-13 3.4158E-12
# lat0 lon0 xBary yBary zBary JD0
2.423052 -155.661852 0.817114 0.023416 -0.550072 2457071.085238
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 331.77778 +/- 0.013
Argument of Peri: 47.35152 +/- 0.020
Long of Asc Node: 197.89997 +/- 0.000
Inclination: 24.80096 +/- 0.000
Eccentricity: 0.19665846 +/- 0.0000
Semi-Major Axis: 44.34108328 +/- 0.0027
Time of Perihelion: 2465525.1671 +/- 9.8
Perihelion: 35.62103428 +/- 0.0029
Aphelion: 53.06113229 +/- 0.0038
Period (y) 295.2689 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.16195577 +/- 0.0004
Ecliptic Y -14.55396111 +/- 0.0002
Ecliptic Z 1.54779237 +/- 0.0000
Ecliptic XDOT 0.00144103 +/- 0.0000
Ecliptic YDOT -0.00237045 +/- 0.0000
Ecliptic ZDOT 0.00124699 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.16528029 +/- 0.0004
Geocenter to KBO 36.60369409 +/- 0.0005
# Hcoef: 7.09
The following table shows the complete astrometric record for 15GS55. 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 (15GS55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.58446 13 33 44.452 -07 10 50.06 22.8r 15GS55 568 C~2lVC 2015 02 17.62541 13 33 44.362 -07 10 49.05 22.7r 15GS55 568 C~2lVC 2015 02 20.61856 13 33 37.522 -07 09 35.32 22.8r 15GS55 568 C~2lVC 2015 03 18.56698 13 32 08.899 -06 56 21.68 22.7r 15GS55 568 C~2lVC 2015 03 18.60819 13 32 08.723 -06 56 20.15 22.8r 15GS55 568 C~2lVC 2015 03 18.61429 13 32 08.695 -06 56 20.04 22.8r 15GS55 568 C~2lVC 2015 03 20.57112 13 32 00.268 -06 55 11.54 22.6r 15GS55 568 C~2lVC 2015 04 11.50547 13 30 16.715 -06 41 48.14 22.6r 15GS55 568 C~2lVC 2015 04 13.36971 13 30 07.494 -06 40 38.90 22.7r 15GS55 568 C~2lVC 2015 04 13.41068 13 30 07.291 -06 40 37.35 22.7r 15GS55 568 C~2lVC 2015 04 13.51324 13 30 06.775 -06 40 33.61 22.7r 15GS55 568 C~2lVC 2015 04 18.28263 13 29 43.17 -06 37 37.6 15GS55 W84 C~2zsP 2015 04 19.41044 13 29 37.602 -06 36 56.79 22.6r 15GS55 568 C~2lVC 2015 04 19.52742 13 29 37.017 -06 36 52.60 22.8r 15GS55 568 C~2lVC 2015 04 21.27507 13 29 28.41 -06 35 48.5 23.1V 15GS55 W84 C~2zsP 2015 04 22.27474 13 29 23.52 -06 35 12.6 15GS55 W84 C~2zsP 2015 05 18.33311 13 27 26.017 -06 20 59.16 22.8r 15GS55 568 C~2lVC 2015 06 20.28316 13 25 55.625 -06 09 46.69 22.8r 15GS55 568 C~2lVC 2015 06 20.32394 13 25 55.564 -06 09 46.18 22.8r 15GS55 568 C~2lVC 2015 07 14.28011 13 25 50.247 -06 08 02.13 22.9r 15GS55 568 C~2lVC 2015 07 20.27306 13 25 57.690 -06 08 29.28 22.8r 15GS55 568 C~2lVC 2016 02 04.57962 13 41 01.772 -07 09 26.58 22.9w 15GS55 568 C~2lVC 2016 02 10.56746 13 40 55.896 -07 07 35.51 23.0w 15GS55 568 C~2lVC 2016 03 11.54839 13 39 37.060 -06 53 58.83 22.9w 15GS55 568 C~2lVC 2016 04 03.44935 13 37 56.527 -06 40 25.57 22.9w 15GS55 568 C~2lVC 2016 04 09.43049 13 37 27.295 -06 36 43.89 22.8w 15GS55 568 C~2lVC 2016 05 02.31529 13 35 35.016 -06 23 05.75 22.9w 15GS55 568 C~2lVC 2016 05 06.32506 13 35 16.357 -06 20 53.68 22.9w 15GS55 568 C~2lVC 2016 05 28.29220 13 33 47.683 -06 10 34.80 22.9w 15GS55 568 C~2lVC 2016 05 28.30434 13 33 47.642 -06 10 34.53 22.9w 15GS55 568 C~2lVC 2016 05 29.31127 13 33 44.275 -06 10 11.25 22.9w 15GS55 568 C~2lVC 2016 06 04.36963 13 33 25.611 -06 08 01.83 22.9w 15GS55 568 C~2lVC 2016 07 07.28742 13 32 39.435 -06 02 17.13 23.0w 15GS55 568 C~2lVC 2017 02 27.63752 13 47 21.886 -06 53 57.10 15GS55 568 C~2lVC 2017 02 27.65749 13 47 21.832 -06 53 56.66 15GS55 568 C~2lVC 2017 06 24.29923 13 39 44.716 -05 57 15.32 23.1w 15GS55 568 C~2lVC 2022 05 23.206910 14 17 08.918 -05 29 12.07 23.1G 15GS55 G37 C~5fmW 2022 05 23.254040 14 17 08.678 -05 29 10.92 15GS55 G37 C~5fmW 2022 05 23.300650 14 17 08.474 -05 29 09.68 15GS55 G37 C~5fmW
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 -0.06
2 0.0001 0.00 0.02 0.00 -0.03
3 0.0083 0.00 -0.02 0.00 -0.03
4 0.0793 0.00 -0.02 0.00 -0.04
5 0.0795 0.00 0.02 0.00 0.05
6 0.0795 0.00 -0.00 0.00 -0.05
7 0.0848 0.00 -0.08 0.00 -0.05
8 0.1449 0.00 0.01 0.00 -0.01
9 0.1500 0.00 -0.14 0.00 0.11
10 0.1501 0.00 -0.09 0.00 0.14
11 0.1504 0.00 -0.07 0.00 0.08
12 0.1634 0.00 0.08 0.00 0.19
13 0.1665 0.00 -0.02 0.00 0.01
14 0.1669 0.00 0.02 0.00 -0.07
15 0.1716 0.00 -0.03 0.00 0.33
16 0.1744 0.00 0.20 0.00 0.12
17 0.2457 0.00 0.01 0.00 -0.03
18 0.3359 0.00 0.03 0.00 -0.04
19 0.3360 0.00 0.00 0.00 -0.00
20 0.4016 0.00 -0.03 0.00 -0.09
21 0.4180 0.00 0.00 0.00 -0.07
22 0.9637 0.00 0.05 0.00 -0.04
23 0.9801 0.00 0.02 0.00 0.00
24 1.0622 0.00 -0.08 0.00 -0.05
25 1.1249 0.00 -0.01 0.00 -0.06
26 1.1413 0.00 -0.03 0.00 -0.05
27 1.2039 0.00 -0.00 0.00 -0.03
28 1.2149 0.00 0.01 0.00 -0.06
29 1.2750 0.00 -0.00 0.00 -0.02
30 1.2751 0.00 0.01 0.00 -0.03
31 1.2778 0.00 -0.04 0.00 -0.05
32 1.2944 0.00 -0.01 0.00 -0.05
33 1.3845 0.00 -0.03 0.00 -0.06
34 2.0289 0.00 0.01 0.00 0.10
35 2.0289 0.00 0.05 0.00 -0.04
36 2.3483 0.00 -0.03 0.00 -0.04
37 7.2597 0.00 0.20 0.00 0.01
38 7.2599 0.00 -0.16 0.00 -0.01
39 7.2600 0.00 -0.03 0.00 0.07
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.
15GS55 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 43.926 43.926 43.926 ecceobj 0.191 0.191 0.191 incobj 24.903 24.903 24.903 qmin 34.558 34.359 34.653 qmax 54.202 54.469 54.248 amean 44.198 44.192 44.194 amin 43.788 43.776 43.801 amax 44.647 44.672 44.654 emean 0.193 0.196 0.194 emin 0.171 0.180 0.174 emax 0.215 0.220 0.215 imean 25.114 25.064 25.105 imin 24.528 24.353 24.613 imax 25.576 25.579 25.710 excite_mean 0.466 0.467 0.467 fracstop 1.000 1.000 1.000 cjmean 2.834 2.834 2.834 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 177.2 182.7 175.0 kozaiamp 179.9 180.0 180.0