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: 15GH57
# Created Wed May 8 01:17:04 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000116 0.021978 0.000002 0.000191 0.023150 0.000000
# Chi-squared of fit: 8.27 DOF: 52 RMS: 0.09
# Min/Max residuals: -0.16 0.22
# Exact a, adot, b, bdot, g, gdot:
1.515050E-05 2.183359E-02 6.619970E-07 1.907462E-04 2.318040E-02 2.935877E-04
# Covariance matrix:
2.0896E-13 7.0191E-15 -1.1096E-15 1.8434E-15 1.7284E-13 3.6847E-12
7.0191E-15 3.3564E-13 -1.6160E-15 4.1562E-15 1.9985E-13 9.3717E-12
-1.1096E-15 -1.6160E-15 9.5543E-14 -8.5315E-14 -2.1134E-15 -8.1543E-14
1.8434E-15 4.1562E-15 -8.5315E-14 1.6074E-13 4.3833E-15 2.2934E-13
1.7284E-13 1.9985E-13 -2.1134E-15 4.3833E-15 2.9845E-13 9.3922E-12
3.6847E-12 9.3717E-12 -8.1543E-14 2.2934E-13 9.3922E-12 5.2631E-10
# lat0 lon0 xBary yBary zBary JD0
1.264759 -154.266430 0.830937 0.011833 -0.529341 2457071.015468
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 192.66047 +/- 3.634
Argument of Peri: 235.00806 +/- 3.634
Long of Asc Node: 137.36700 +/- 0.041
Inclination: 1.35426 +/- 0.000
Eccentricity: 0.01582235 +/- 0.0002
Semi-Major Axis: 43.01507397 +/- 0.0027
Time of Perihelion: 2504969.3944 +/- 1040.2
Perihelion: 42.33447427 +/- 0.0110
Aphelion: 43.69567367 +/- 0.0110
Period (y) 282.1235 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.69241123 +/- 0.0009
Ecliptic Y -18.20756809 +/- 0.0004
Ecliptic Z 0.95222524 +/- 0.0000
Ecliptic XDOT 0.00108524 +/- 0.0000
Ecliptic YDOT -0.00234343 +/- 0.0000
Ecliptic ZDOT 0.00002338 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.67962658 +/- 0.0009
Geocenter to KBO 43.13989244 +/- 0.0010
# Hcoef: 8.30
The following table shows the complete astrometric record for 15GH57. 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 (15GH57) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.51469 13 37 17.118 -08 46 01.18 24.8r 15GH57 568 C~2nvV 2015 02 17.55579 13 37 17.035 -08 46 00.49 24.7r 15GH57 568 C~2nvV 2015 02 20.48657 13 37 11.004 -08 45 20.57 24.6r 15GH57 568 C~2nvV 2015 03 18.49249 13 35 51.830 -08 37 05.91 24.7r 15GH57 568 C~2nvV 2015 03 18.53407 13 35 51.668 -08 37 04.87 24.6r 15GH57 568 C~2nvV 2015 03 20.53726 13 35 44.018 -08 36 18.58 24.9r 15GH57 568 C~2nvV 2015 04 11.47256 13 34 12.037 -08 27 10.52 24.9r 15GH57 568 C~2nvV 2015 04 12.37938 13 34 08.054 -08 26 47.04 24.6r 15GH57 568 C~2nvV 2015 04 12.42509 13 34 07.853 -08 26 46.08 24.5r 15GH57 568 C~2nvV 2015 04 12.46730 13 34 07.665 -08 26 44.88 24.8r 15GH57 568 C~2nvV 2015 04 18.43790 13 33 41.320 -08 24 10.77 24.6r 15GH57 568 C~2nvV 2015 04 18.48560 13 33 41.126 -08 24 09.53 26.1r 15GH57 568 C~2nvV 2015 05 16.28656 13 31 45.878 -08 13 09.05 23.6r 15GH57 568 C~2nvV 2015 05 17.24686 13 31 42.355 -08 12 49.17 24.9r 15GH57 568 C~2nvV 2015 05 25.38864 13 31 14.279 -08 10 13.35 24.7r 15GH57 568 C~2nvV 2015 05 25.44647 13 31 14.088 -08 10 12.23 24.8r 15GH57 568 C~2nvV 2015 06 21.33827 13 30 10.935 -08 04 39.47 25.1r 15GH57 568 C~2nvV 2015 06 22.29486 13 30 09.669 -08 04 33.50 25.3r 15GH57 568 C~2nvV 2015 07 12.28879 13 30 00.040 -08 04 11.27 24.7r 15GH57 568 C~2nvV 2015 07 19.27863 13 30 04.554 -08 04 50.06 25.8r 15GH57 568 C~2nvV 2016 02 04.61026 13 42 19.257 -09 14 36.61 25.2w 15GH57 568 C~2nvV 2016 03 11.60082 13 41 00.834 -09 06 08.51 24.0w 15GH57 568 C~2nvV 2016 04 03.47362 13 39 31.260 -08 57 14.10 25.3w 15GH57 568 C~2nvV 2016 04 09.45477 13 39 05.286 -08 54 42.07 25.0w 15GH57 568 C~2nvV 2016 05 29.32744 13 35 45.269 -08 35 52.05 21.2w 15GH57 568 C~2nvV 2016 06 27.32010 13 34 46.168 -08 30 52.63 24.8w 15GH57 568 C~2nvV 2016 06 27.32513 13 34 46.150 -08 30 52.34 25.4w 15GH57 568 C~2nvV 2016 07 07.31590 13 34 40.873 -08 30 39.03 25.1w 15GH57 568 C~2nvV 2017 03 29.50900 13 44 41.763 -09 26 05.88 24.6w 15GH57 568 C~2nvV
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 -0.05 0.00 -0.11
2 0.0001 -1.40 -0.11 0.20 0.04
3 0.0081 -99.20 0.22 4.98 -0.01
4 0.0793 -1372.69 -0.04 39.70 -0.01
5 0.0795 -1375.30 -0.09 39.80 0.06
6 0.0849 -1497.83 0.00 41.68 -0.01
7 0.1450 -2968.36 -0.15 55.52 0.03
8 0.1475 -3031.96 -0.16 55.84 0.07
9 0.1476 -3035.09 -0.02 55.65 -0.11
10 0.1477 -3038.12 -0.05 55.75 -0.00
11 0.1641 -3458.42 -0.10 56.72 0.01
12 0.1642 -3461.55 0.17 56.83 0.13
13 0.2403 -5296.01 0.13 46.77 0.03
14 0.2429 -5352.00 0.13 46.13 0.13
15 0.2652 -5797.27 0.10 38.55 -0.09
16 0.2654 -5800.32 0.06 38.55 -0.01
17 0.3390 -6795.74 -0.01 4.46 0.00
18 0.3416 -6815.45 0.06 3.12 0.08
19 0.3964 -6956.79 -0.07 -28.68 0.01
20 0.4155 -6880.11 -0.10 -40.18 -0.00
21 0.9640 4794.49 0.00 16.03 -0.04
22 1.0625 3527.63 0.15 72.30 -0.15
23 1.1251 2096.96 0.02 92.12 -0.12
24 1.1415 1683.11 0.06 94.82 0.05
25 1.2781 -1490.19 -0.07 73.14 -0.07
26 1.3574 -2415.78 0.16 33.12 -0.16
27 1.3575 -2416.13 -0.12 33.29 0.02
28 1.3848 -2493.90 -0.07 17.18 0.03
29 2.1109 7012.47 -0.06 128.98 0.22
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.
15GH57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.632 42.640 42.623 ecceobj 0.025 0.025 0.026 incobj 1.357 1.357 1.357 qmin 40.672 40.709 40.672 qmax 45.281 45.318 45.310 amean 42.902 42.911 42.895 amin 42.578 42.575 42.570 amax 43.236 43.243 43.234 emean 0.031 0.031 0.032 emin 0.009 0.009 0.009 emax 0.048 0.048 0.048 imean 1.980 1.970 1.987 imin 0.784 0.784 0.784 imax 2.706 2.693 2.720 excite_mean 0.047 0.047 0.047 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 190.3 190.8 190.0 kozaiamp 180.0 180.0 179.9