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: 15GY58
# Created Sun Nov 24 02:10:18 2024
# Orbit generated from Bernstein formalism
# Fitting 39 observations of 39
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000123 0.023241 0.000004 0.000514 0.023616 0.000000
# Chi-squared of fit: 13.21 DOF: 72 RMS: 0.10
# Min/Max residuals: -0.40 0.25
# Exact a, adot, b, bdot, g, gdot:
1.549965E-05 2.314530E-02 5.208449E-07 5.132608E-04 2.367921E-02 1.644492E-03
# Covariance matrix:
1.5222E-13 -5.8112E-15 -1.5796E-15 2.1204E-15 1.1405E-13 1.5901E-12
-5.8112E-15 2.6718E-13 -3.5500E-15 9.1642E-15 1.6600E-13 7.1161E-12
-1.5796E-15 -3.5500E-15 8.1040E-14 -5.9428E-14 -3.8269E-15 -1.3087E-13
2.1204E-15 9.1642E-15 -5.9428E-14 8.1021E-14 7.5526E-15 3.5350E-13
1.1405E-13 1.6600E-13 -3.8269E-15 7.5526E-15 2.2671E-13 5.7976E-12
1.5901E-12 7.1161E-12 -1.3087E-13 3.5350E-13 5.7976E-12 2.7495E-10
# lat0 lon0 xBary yBary zBary JD0
2.630785 -154.303386 0.829821 0.024521 -0.530658 2457071.097458
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 47.54090 +/- 0.275
Argument of Peri: 9.40448 +/- 0.352
Long of Asc Node: 141.47083 +/- 0.012
Inclination: 2.91186 +/- 0.000
Eccentricity: 0.06913493 +/- 0.0006
Semi-Major Axis: 44.73525987 +/- 0.0049
Time of Perihelion: 2442638.1086 +/- 83.4
Perihelion: 41.64249099 +/- 0.0277
Aphelion: 47.82802875 +/- 0.0279
Period (y) 299.2149 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.85572800 +/- 0.0008
Ecliptic Y -17.77494940 +/- 0.0004
Ecliptic Z 1.93842376 +/- 0.0000
Ecliptic XDOT 0.00098803 +/- 0.0000
Ecliptic YDOT -0.00249821 +/- 0.0000
Ecliptic ZDOT 0.00006810 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.77234984 +/- 0.0007
Geocenter to KBO 42.23114381 +/- 0.0008
# Hcoef: 8.15
The following table shows the complete astrometric record for 15GY58. 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 (15GY58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.59668 13 39 08.665 -07 28 48.92 24.9r 15GY58 568 C~2nvb 2015 02 17.63771 13 39 08.580 -07 28 48.20 24.6r 15GY58 568 C~2nvb 2015 02 20.63083 13 39 02.486 -07 28 01.67 24.3r 15GY58 568 C~2nvb 2015 03 18.57516 13 37 43.527 -07 19 05.14 24.6r 15GY58 568 C~2nvb 2015 03 18.62254 13 37 43.337 -07 19 04.01 24.4r 15GY58 568 C~2nvb 2015 03 20.57938 13 37 35.831 -07 18 16.08 24.4r 15GY58 568 C~2nvb 2015 04 11.51365 13 36 03.146 -07 08 46.33 24.6r 15GY58 568 C~2nvb 2015 04 13.37789 13 35 54.876 -07 07 57.08 24.5r 15GY58 568 C~2nvb 2015 04 13.41891 13 35 54.708 -07 07 55.91 24.4r 15GY58 568 C~2nvb 2015 04 13.42365 13 35 54.650 -07 07 55.93 24.1r 15GY58 568 C~2nvb 2015 04 13.42846 13 35 54.655 -07 07 55.74 24.0r 15GY58 568 C~2nvb 2015 04 13.43331 13 35 54.624 -07 07 55.60 24.1r 15GY58 568 C~2nvb 2015 04 13.43815 13 35 54.604 -07 07 55.40 24.5r 15GY58 568 C~2nvb 2015 04 13.52145 13 35 54.218 -07 07 53.28 24.4r 15GY58 568 C~2nvb 2015 04 19.48929 13 35 27.603 -07 05 16.78 22.6r 15GY58 568 C~2nvb 2015 05 18.34130 13 33 27.721 -06 54 04.60 24.3r 15GY58 568 C~2nvb 2015 06 20.29133 13 32 00.307 -06 47 01.24 24.7r 15GY58 568 C~2nvb 2015 06 20.33212 13 32 00.241 -06 47 00.95 24.5r 15GY58 568 C~2nvb 2015 06 22.33610 13 31 57.442 -06 46 51.19 24.8r 15GY58 568 C~2nvb 2015 07 14.28829 13 31 48.467 -06 47 17.12 25.5r 15GY58 568 C~2nvb 2015 07 20.28135 13 31 53.139 -06 48 06.47 24.4r 15GY58 568 C~2nvb 2016 02 04.58367 13 44 27.573 -07 58 19.80 24.7w 15GY58 568 C~2nvb 2016 02 10.57151 13 44 21.929 -07 57 22.51 24.6w 15GY58 568 C~2nvb 2016 02 10.61301 13 44 21.896 -07 57 21.93 24.8w 15GY58 568 C~2nvb 2016 03 11.59678 13 43 10.483 -07 48 48.32 24.8w 15GY58 568 C~2nvb 2016 04 03.46957 13 41 40.650 -07 39 26.87 24.7w 15GY58 568 C~2nvb 2016 04 09.45073 13 41 14.482 -07 36 50.42 24.6w 15GY58 568 C~2nvb 2016 05 01.45743 13 39 37.190 -07 27 30.31 24.7w 15GY58 568 C~2nvb 2016 05 02.33152 13 39 33.476 -07 27 09.44 24.8w 15GY58 568 C~2nvb 2016 05 02.36396 13 39 33.317 -07 27 08.76 23.9w 15GY58 568 C~2nvb 2016 05 07.33487 13 39 12.449 -07 25 13.35 23.6w 15GY58 568 C~2nvb 2016 05 29.33959 13 37 51.933 -07 18 09.18 24.9w 15GY58 568 C~2nvb 2016 06 04.40200 13 37 34.348 -07 16 43.50 24.7w 15GY58 568 C~2nvb 2016 06 27.33817 13 36 51.640 -07 13 49.63 24.8w 15GY58 568 C~2nvb 2016 07 07.32804 13 36 46.135 -07 13 54.01 25.2w 15GY58 568 C~2nvc 2017 03 29.51368 13 47 08.094 -08 08 49.55 24.9w 15GY58 568 C~2nvc 2017 03 30.48302 13 47 04.066 -08 08 25.30 15GY58 568 C~2nvc 2017 03 30.48771 13 47 04.053 -08 08 25.16 24.7w 15GY58 568 C~2nvc 2017 06 24.30392 13 41 56.248 -07 41 01.24 25.0w 15GY58 568 C~2nvc
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 -0.04
2 0.0001 -1.44 -0.09 0.21 0.05
3 0.0083 -102.76 0.16 10.83 0.07
4 0.0793 -1391.88 0.02 85.91 0.03
5 0.0795 -1394.93 -0.07 85.94 -0.03
6 0.0848 -1516.39 -0.01 90.15 -0.03
7 0.1449 -3008.54 -0.19 120.83 0.08
8 0.1500 -3141.14 0.01 122.02 0.07
9 0.1501 -3143.89 0.23 122.20 0.25
10 0.1501 -3144.69 -0.23 121.87 -0.08
11 0.1501 -3144.69 0.12 122.07 0.12
12 0.1501 -3145.17 -0.01 122.03 0.09
13 0.1501 -3145.52 -0.01 122.11 0.16
14 0.1504 -3151.64 -0.09 122.00 0.04
15 0.1667 -3577.70 -0.08 123.89 -0.06
16 0.2457 -5485.72 0.15 100.45 -0.40
17 0.3359 -6853.54 0.02 19.74 -0.11
18 0.3360 -6854.56 -0.04 19.65 -0.06
19 0.3415 -6896.99 0.04 13.51 0.03
20 0.4016 -7012.10 0.05 -59.49 -0.03
21 0.4180 -6929.20 -0.02 -80.03 -0.02
22 0.9637 5060.89 0.09 54.74 -0.06
23 0.9801 4962.02 -0.13 78.16 -0.12
24 0.9802 4961.35 0.11 78.52 0.11
25 1.0623 3786.10 -0.04 176.99 -0.06
26 1.1249 2337.95 0.02 220.50 -0.01
27 1.1413 1918.63 0.06 226.28 0.01
28 1.2015 367.16 -0.15 226.61 -0.04
29 1.2039 308.12 0.10 226.12 0.06
30 1.2040 305.66 -0.11 225.90 -0.12
31 1.2176 -25.45 0.22 221.34 -0.04
32 1.2779 -1295.58 -0.00 183.37 0.02
33 1.2945 -1570.50 -0.06 168.45 -0.02
34 1.3573 -2225.85 0.07 100.11 0.00
35 1.3846 -2300.61 -0.10 66.31 -0.10
36 2.1107 7514.71 -0.12 319.98 0.14
37 2.1133 7450.10 0.01 321.27 -0.03
38 2.1133 7449.87 0.10 321.34 0.03
39 2.3483 2588.29 -0.01 215.96 0.09
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.
15GY58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.301 44.317 44.285 ecceobj 0.062 0.064 0.061 incobj 2.918 2.918 2.918 qmin 40.810 40.747 40.798 qmax 48.625 48.701 48.604 amean 44.587 44.604 44.551 amin 44.236 44.238 44.186 amax 44.959 44.970 44.934 emean 0.066 0.068 0.064 emin 0.051 0.052 0.047 emax 0.082 0.083 0.082 imean 2.208 2.211 2.187 imin 1.601 1.609 1.576 imax 2.830 2.831 2.820 excite_mean 0.077 0.078 0.075 fracstop 1.000 1.000 1.000 cjmean 3.102 3.102 3.101 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 188.5 187.9 178.4 kozaiamp 179.9 180.0 180.0