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: 15GH55
# Created Sun Nov 24 02:10:16 2024
# Orbit generated from Bernstein formalism
# Fitting 36 observations of 36
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000182 0.028050 0.000005 -0.001890 0.026122 0.000000
# Chi-squared of fit: 10.99 DOF: 66 RMS: 0.10
# Min/Max residuals: -0.27 0.22
# Exact a, adot, b, bdot, g, gdot:
1.672061E-05 2.791198E-02 -1.633217E-06 -1.886407E-03 2.623169E-02 1.321889E-03
# Covariance matrix:
1.8326E-13 1.3062E-14 -2.9123E-17 -7.5360E-15 1.5541E-13 2.8583E-12
1.3062E-14 3.2694E-13 2.3788E-15 -2.2833E-14 1.9681E-13 8.1877E-12
-2.9123E-17 2.3788E-15 8.3062E-14 -7.5105E-14 1.1862E-15 1.1457E-13
-7.5360E-15 -2.2833E-14 -7.5105E-14 1.3436E-13 -1.9994E-14 -9.9384E-13
1.5541E-13 1.9681E-13 1.1862E-15 -1.9994E-14 2.7197E-13 7.3416E-12
2.8583E-12 8.1877E-12 1.1457E-13 -9.9384E-13 7.3416E-12 3.5427E-10
# lat0 lon0 xBary yBary zBary JD0
2.535948 -156.828083 0.805821 0.025226 -0.566408 2457071.077078
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 11.50743 +/- 0.256
Argument of Peri: 131.85886 +/- 0.334
Long of Asc Node: 55.19711 +/- 0.005
Inclination: 4.55275 +/- 0.001
Eccentricity: 0.12371673 +/- 0.0002
Semi-Major Axis: 44.00077648 +/- 0.0037
Time of Perihelion: 2453662.7736 +/- 75.9
Perihelion: 38.55714424 +/- 0.0099
Aphelion: 49.44440872 +/- 0.0103
Period (y) 291.8762 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -35.85323894 +/- 0.0007
Ecliptic Y -14.46818987 +/- 0.0003
Ecliptic Z 1.68668459 +/- 0.0000
Ecliptic XDOT 0.00100795 +/- 0.0000
Ecliptic YDOT -0.00274144 +/- 0.0000
Ecliptic ZDOT -0.00019050 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.69920110 +/- 0.0007
Geocenter to KBO 38.12182445 +/- 0.0008
# Hcoef: 8.80
The following table shows the complete astrometric record for 15GH55. 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 (15GH55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.57630 13 29 32.405 -06 38 53.67 24.6r 15GH55 568 C~2lVA 2015 02 17.61724 13 29 32.312 -06 38 53.11 25.0r 15GH55 568 C~2lVA 2015 02 20.61032 13 29 25.061 -06 38 03.01 24.5r 15GH55 568 C~2lVA 2015 03 18.55881 13 27 54.670 -06 28 25.27 24.6r 15GH55 568 C~2lVA 2015 03 18.59998 13 27 54.501 -06 28 24.17 24.6r 15GH55 568 C~2lVA 2015 03 20.55852 13 27 46.062 -06 27 32.57 24.6r 15GH55 568 C~2lVA 2015 04 11.49722 13 26 03.266 -06 17 25.39 24.3r 15GH55 568 C~2lVA 2015 04 13.36151 13 25 54.180 -06 16 33.22 24.4r 15GH55 568 C~2lVA 2015 04 13.40245 13 25 53.992 -06 16 32.27 24.4r 15GH55 568 C~2lVA 2015 04 13.48799 13 25 53.560 -06 16 29.71 24.4r 15GH55 568 C~2lVA 2015 04 13.50003 13 25 53.485 -06 16 29.44 24.5r 15GH55 568 C~2lVA 2015 04 13.50498 13 25 53.485 -06 16 29.28 25.0r 15GH55 568 C~2lVA 2015 04 19.39819 13 25 24.781 -06 13 46.58 24.6r 15GH55 568 C~2lVA 2015 04 19.40228 13 25 24.750 -06 13 46.49 24.3r 15GH55 568 C~2lVA 2015 04 19.51516 13 25 24.209 -06 13 43.69 24.2r 15GH55 568 C~2lVA 2015 04 19.51922 13 25 24.159 -06 13 43.38 24.5r 15GH55 568 C~2lVA 2015 05 18.27664 13 23 16.121 -06 02 15.71 24.6r 15GH55 568 C~2lVA 2015 05 18.32493 13 23 15.933 -06 02 14.74 24.8r 15GH55 568 C~2lVA 2015 06 20.27498 13 21 47.701 -05 55 52.61 24.6r 15GH55 568 C~2lVA 2015 06 20.31583 13 21 47.637 -05 55 52.40 24.7r 15GH55 568 C~2lVA 2015 06 22.31546 13 21 45.138 -05 55 47.62 24.5r 15GH55 568 C~2lVA 2015 07 14.26780 13 21 41.847 -05 57 22.79 25.0r 15GH55 568 C~2lVA 2015 07 20.29799 13 21 48.864 -05 58 36.26 24.6r 15GH55 568 C~2lVA 2016 02 04.56329 13 35 43.356 -07 22 42.84 25.5w 15GH55 568 C~2lVA 2016 02 10.60087 13 35 36.048 -07 21 43.67 25.4w 15GH55 568 C~2lVA 2016 03 12.47618 13 34 09.639 -07 12 17.96 24.7w 15GH55 568 C~2lVA 2016 04 03.43722 13 32 32.745 -07 02 41.93 24.8w 15GH55 568 C~2lVA 2016 04 09.41702 13 32 03.876 -06 59 56.29 24.6w 15GH55 568 C~2lVA 2016 05 01.36453 13 30 18.155 -06 50 10.15 24.6w 15GH55 568 C~2lVA 2016 05 02.30717 13 30 13.813 -06 49 46.87 24.9w 15GH55 568 C~2lVA 2016 05 06.31695 13 29 55.630 -06 48 10.22 24.6w 15GH55 568 C~2lVA 2016 06 04.35340 13 28 08.311 -06 39 21.16 25.1w 15GH55 568 C~2lVA 2016 06 27.28082 13 27 27.064 -06 37 05.38 25.1w 15GH55 568 C~2lVA 2016 07 06.31671 13 27 23.703 -06 37 31.06 24.9w 15GH55 568 C~2lVA 2016 07 07.28338 13 27 23.794 -06 37 36.35 25.5w 15GH55 568 C~2lVA 2017 03 29.47339 13 38 51.868 -07 46 33.29 15GH55 568 C~2lVA
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 0.10
2 0.0001 -1.49 0.12 0.01 0.04
3 0.0083 -120.39 0.04 6.81 -0.04
4 0.0793 -1585.53 -0.15 47.41 -0.13
5 0.0795 -1588.28 -0.02 47.51 -0.06
6 0.0848 -1724.23 -0.03 49.06 0.04
7 0.1449 -3372.80 -0.01 47.28 0.06
8 0.1500 -3518.00 -0.11 45.65 0.10
9 0.1501 -3520.96 0.18 45.50 0.00
10 0.1503 -3527.89 0.02 45.49 0.13
11 0.1504 -3529.03 -0.17 45.33 -0.02
12 0.1504 -3529.09 0.17 45.48 0.14
13 0.1665 -3987.07 0.03 38.31 0.08
14 0.1665 -3987.53 -0.11 38.22 0.01
15 0.1668 -3996.06 0.22 37.84 -0.17
16 0.1669 -3996.87 -0.27 37.85 -0.15
17 0.2456 -6026.54 -0.01 -30.97 -0.04
18 0.2457 -6029.51 0.00 -31.11 0.01
19 0.3359 -7395.02 0.05 -165.09 -0.04
20 0.3360 -7395.98 -0.06 -165.25 0.01
21 0.3415 -7432.42 0.07 -174.67 -0.06
22 0.4016 -7442.65 0.05 -281.34 -0.21
23 0.4181 -7318.00 -0.03 -310.66 0.05
24 0.9637 6103.77 -0.11 -421.28 0.05
25 0.9802 5980.85 0.17 -405.88 0.08
26 1.0647 4576.43 -0.08 -349.23 0.19
27 1.1249 3022.94 -0.07 -341.49 0.06
28 1.1412 2562.27 0.00 -345.05 -0.07
29 1.2013 882.62 0.01 -378.23 0.05
30 1.2039 813.93 0.07 -380.37 0.03
31 1.2149 526.54 -0.01 -390.14 0.02
32 1.2944 -1154.64 0.06 -487.25 0.02
33 1.3572 -1775.96 -0.09 -587.82 -0.22
34 1.3819 -1813.03 0.09 -630.18 -0.13
35 1.3846 -1809.82 -0.07 -634.60 0.02
36 2.1106 9239.66 0.01 -732.82 0.04
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.
15GH55 quality flag:2 Type: SCATNEAR SCATNEAR CLASSICAL axisobj 43.552 43.567 43.537 ecceobj 0.114 0.115 0.114 incobj 4.561 4.561 4.561 qmin 37.185 36.619 38.009 qmax 50.721 51.353 49.844 amean 43.691 43.772 43.707 amin 43.276 43.257 43.301 amax 44.220 44.218 44.175 emean 0.105 0.112 0.099 emin 0.057 0.079 0.068 emax 0.149 0.162 0.129 imean 2.770 2.404 2.758 imin 1.454 0.370 1.770 imax 3.927 3.824 3.813 excite_mean 0.116 0.121 0.111 fracstop 1.000 1.000 1.000 cjmean 3.081 3.081 3.083 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 179.8 176.1 182.7 kozaiamp 180.0 179.9 180.0