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: 15GM58
# Created Sat May 4 01:17:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 38 observations of 38
# Arc: 6.09y
# First observation: 2015/02/17
# Last observation: 2021/03/20
# Chi-squared of fit: 9.33 DOF: 70 RMS: 0.09
# Min/Max residuals: -0.22 0.33
# Exact a, adot, b, bdot, g, gdot:
1.518291E-05 2.229841E-02 -5.276484E-07 -4.032172E-04 2.331385E-02 -7.924135E-04
# Covariance matrix:
1.5302E-13 -4.9380E-14 -7.2142E-16 3.6307E-16 8.0515E-14 -2.1297E-13
-4.9380E-14 1.6841E-13 8.5700E-16 -2.5241E-15 6.8554E-14 1.2286E-12
-7.2142E-16 8.5700E-16 5.8711E-14 -2.0756E-14 -1.8791E-16 6.9843E-15
3.6307E-16 -2.5241E-15 -2.0756E-14 2.1111E-14 -1.3092E-15 -2.1084E-14
8.0515E-14 6.8554E-14 -1.8791E-16 -1.3092E-15 1.3111E-13 5.9891E-13
-2.1297E-13 1.2286E-12 6.9843E-15 -2.1084E-14 5.9891E-13 1.0252E-11
# lat0 lon0 xBary yBary zBary JD0
2.686683 -156.056477 0.813262 0.026212 -0.555626 2457071.089318
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 285.21934 +/- 0.047
Argument of Peri: 191.22801 +/- 0.062
Long of Asc Node: 92.37756 +/- 0.007
Inclination: 2.83048 +/- 0.000
Eccentricity: 0.05324583 +/- 0.0001
Semi-Major Axis: 43.95492703 +/- 0.0025
Time of Perihelion: 2479180.8968 +/- 15.8
Perihelion: 41.61451034 +/- 0.0066
Aphelion: 46.29534371 +/- 0.0067
Period (y) 291.4201 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.99993956 +/- 0.0006
Ecliptic Y -16.87083336 +/- 0.0003
Ecliptic Z 2.01055628 +/- 0.0000
Ecliptic XDOT 0.00114200 +/- 0.0000
Ecliptic YDOT -0.00236201 +/- 0.0000
Ecliptic ZDOT -0.00005157 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.45877875 +/- 0.0006
Geocenter to KBO 42.89300550 +/- 0.0007
# Hcoef: 7.61
The following table shows the complete astrometric record for 15GM58. 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 (15GM58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.58854 13 32 39.043 -06 47 27.71 24.0r 15GM58 568 C~2nva 2015 02 17.62949 13 32 38.957 -06 47 27.10 23.9r 15GM58 568 C~2nva 2015 02 20.62266 13 32 32.483 -06 46 39.61 23.9r 15GM58 568 C~2nva 2015 03 18.56698 13 31 11.539 -06 37 40.54 24.1r 15GM58 568 C~2nva 2015 03 18.60819 13 31 11.375 -06 37 39.59 24.2r 15GM58 568 C~2nva 2015 03 18.61429 13 31 11.354 -06 37 39.40 23.9r 15GM58 568 C~2nva 2015 03 20.57112 13 31 03.787 -06 36 51.77 23.8r 15GM58 568 C~2nva 2015 04 11.50547 13 29 31.253 -06 27 29.48 23.7r 15GM58 568 C~2nva 2015 04 13.36971 13 29 23.053 -06 26 41.11 24.1r 15GM58 568 C~2nva 2015 04 13.41068 13 29 22.855 -06 26 40.00 23.8r 15GM58 568 C~2nva 2015 04 13.51324 13 29 22.403 -06 26 37.43 23.9r 15GM58 568 C~2nva 2015 04 19.41044 13 28 56.432 -06 24 06.12 23.8r 15GM58 568 C~2nva 2015 04 19.52742 13 28 55.929 -06 24 03.40 23.9r 15GM58 568 C~2nva 2015 05 18.33311 13 26 58.909 -06 13 16.72 24.1r 15GM58 568 C~2nva 2015 06 20.28316 13 25 35.745 -06 06 52.34 24.0r 15GM58 568 C~2nva 2015 06 20.32394 13 25 35.686 -06 06 52.10 24.1r 15GM58 568 C~2nva 2015 06 22.32783 13 25 33.138 -06 06 44.94 24.1r 15GM58 568 C~2nva 2015 07 14.28011 13 25 26.770 -06 07 38.15 24.5r 15GM58 568 C~2nva 2015 07 20.27306 13 25 32.044 -06 08 34.69 24.0r 15GM58 568 C~2nva 2016 02 04.57962 13 37 44.142 -07 19 23.03 24.2w 15GM58 568 C~2nva 2016 03 11.54839 13 36 22.777 -07 09 42.93 24.3w 15GM58 568 C~2nva 2016 03 11.55250 13 36 22.773 -07 09 43.05 24.3w 15GM58 568 C~2nva 2016 03 12.47618 13 36 19.539 -07 09 22.19 24.1w 15GM58 568 C~2nva 2016 04 03.43722 13 34 52.175 -07 00 24.23 24.1w 15GM58 568 C~2nva 2016 04 09.41701 13 34 26.099 -06 57 49.93 24.2w 15GM58 568 C~2nva 2016 05 02.31529 13 32 46.290 -06 48 21.75 24.0w 15GM58 568 C~2nva 2016 05 06.32506 13 32 29.723 -06 46 51.26 24.2w 15GM58 568 C~2nva 2016 05 28.29624 13 31 10.766 -06 40 01.18 24.4w 15GM58 568 C~2nva 2016 05 28.30839 13 31 10.734 -06 40 01.11 24.4w 15GM58 568 C~2nva 2016 05 29.31531 13 31 07.713 -06 39 46.45 24.2w 15GM58 568 C~2nva 2016 06 04.37369 13 30 50.924 -06 38 27.27 24.1w 15GM58 568 C~2nva 2016 06 27.28486 13 30 11.270 -06 36 00.00 24.4w 15GM58 568 C~2nva 2016 06 27.34232 13 30 11.216 -06 35 59.82 24.2w 15GM58 568 C~2nva 2016 07 07.28742 13 30 07.019 -06 36 16.29 24.3w 15GM58 568 C~2nva 2016 07 07.33209 13 30 07.025 -06 36 16.53 24.0w 15GM58 568 C~2nva 2017 03 29.47339 13 40 04.695 -07 32 14.21 23.6w 15GM58 568 C~2nva 2021 03 20.448660 14 00 13.347 -09 32 24.95 23.3G 15GM58 G37 C~4iAL 2021 03 20.497580 14 00 13.197 -09 32 24.17 15GM58 G37 C~4iAL
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 0.05
2 0.0001 0.00 0.02 0.00 0.04
3 0.0083 0.00 0.03 0.00 0.03
4 0.0793 0.00 -0.04 0.00 0.08
5 0.0795 0.00 -0.09 0.00 0.03
6 0.0795 0.00 -0.05 0.00 0.07
7 0.0848 0.00 0.02 0.00 -0.00
8 0.1449 0.00 -0.01 0.00 -0.04
9 0.1500 0.00 0.04 0.00 0.00
10 0.1501 0.00 -0.17 0.00 0.05
11 0.1504 0.00 -0.05 0.00 -0.03
12 0.1665 0.00 0.03 0.00 0.08
13 0.1668 0.00 0.33 0.00 -0.18
14 0.2457 0.00 -0.07 0.00 0.01
15 0.3359 0.00 -0.01 0.00 0.00
16 0.3360 0.00 -0.02 0.00 0.07
17 0.3415 0.00 -0.05 0.00 0.03
18 0.4016 0.00 0.03 0.00 -0.01
19 0.4180 0.00 0.02 0.00 0.03
20 0.9637 0.00 0.04 0.00 -0.03
21 1.0622 0.00 -0.07 0.00 0.14
22 1.0622 0.00 0.09 0.00 -0.08
23 1.0647 0.00 -0.01 0.00 0.06
24 1.1248 0.00 -0.05 0.00 -0.03
25 1.1412 0.00 -0.04 0.00 -0.04
26 1.2039 0.00 0.10 0.00 -0.01
27 1.2149 0.00 -0.04 0.00 -0.02
28 1.2750 0.00 0.02 0.00 -0.02
29 1.2751 0.00 0.10 0.00 -0.13
30 1.2778 0.00 -0.00 0.00 -0.10
31 1.2944 0.00 -0.03 0.00 -0.01
32 1.3571 0.00 -0.09 0.00 0.01
33 1.3573 0.00 -0.12 0.00 0.14
34 1.3845 0.00 -0.07 0.00 0.00
35 1.3847 0.00 0.06 0.00 -0.06
36 2.1106 0.00 -0.11 0.00 -0.13
37 6.0859 0.00 -0.22 0.00 0.19
38 6.0860 0.00 0.26 0.00 -0.10
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.
15GM58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.551 43.551 43.551 ecceobj 0.054 0.054 0.054 incobj 2.830 2.830 2.830 qmin 40.834 40.836 40.833 qmax 47.044 47.049 47.033 amean 43.840 43.840 43.840 amin 43.498 43.500 43.497 amax 44.190 44.191 44.194 emean 0.048 0.048 0.048 emin 0.032 0.032 0.032 emax 0.065 0.065 0.065 imean 1.122 1.122 1.122 imin 0.328 0.328 0.328 imax 1.693 1.693 1.693 excite_mean 0.053 0.053 0.053 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 181.1 181.2 181.1 kozaiamp 180.0 180.0 180.0