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: 15GQ54
# Created Sun Dec 22 02:10:19 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 2.44y
# First observation: 2015/02/17
# Last observation: 2017/07/27
Preliminary a, adot, b, bdot, g, gdot:
-0.000087 0.019639 0.000012 0.003649 0.022730 0.000000
# Chi-squared of fit: 14.81 DOF: 62 RMS: 0.12
# Min/Max residuals: -0.26 0.35
# Exact a, adot, b, bdot, g, gdot:
1.373086E-05 1.966979E-02 2.682032E-06 3.674264E-03 2.288399E-02 2.932063E-03
# Covariance matrix:
2.0540E-13 -3.6304E-16 -6.0408E-15 2.1689E-14 1.5244E-13 2.6865E-12
-3.6304E-16 2.2171E-13 -1.3858E-14 5.2001E-14 1.5799E-13 6.5040E-12
-6.0408E-15 -1.3858E-14 1.0132E-13 -7.0619E-14 -1.4847E-14 -6.1933E-13
2.1689E-14 5.2001E-14 -7.0619E-14 9.4661E-14 5.4664E-14 2.3270E-12
1.5244E-13 1.5799E-13 -1.4847E-14 5.4664E-14 2.5885E-13 6.8090E-12
2.6865E-12 6.5040E-12 -6.1933E-13 2.3270E-12 6.8090E-12 2.9113E-10
# lat0 lon0 xBary yBary zBary JD0
1.723582 -158.277393 0.791309 0.017798 -0.586785 2457071.068908
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 125.76316 +/- 0.197
Argument of Peri: 229.07481 +/- 0.186
Long of Asc Node: 191.66102 +/- 0.001
Inclination: 10.70426 +/- 0.001
Eccentricity: 0.17611492 +/- 0.0005
Semi-Major Axis: 39.53507222 +/- 0.0069
Time of Perihelion: 2425351.2315 +/- 49.1
Perihelion: 32.57235594 +/- 0.0190
Aphelion: 46.49778849 +/- 0.0199
Period (y) 248.5891 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.41815716 +/- 0.0009
Ecliptic Y -15.64826496 +/- 0.0003
Ecliptic Z 1.31447139 +/- 0.0000
Ecliptic XDOT 0.00055389 +/- 0.0000
Ecliptic YDOT -0.00231664 +/- 0.0000
Ecliptic ZDOT 0.00045004 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.29514390 +/- 0.0009
Geocenter to KBO 43.69867888 +/- 0.0010
# Hcoef: 7.98
The following table shows the complete astrometric record for 15GQ54. 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 (15GQ54) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.56813 13 22 54.568 -06 52 00.22 23.9r 15GQ54 568 C~2lV8 2015 02 17.60905 13 22 54.466 -06 51 59.42 24.4r 15GQ54 568 C~2lV8 2015 03 18.54653 13 21 23.974 -06 41 04.34 24.6r 15GQ54 568 C~2lV8 2015 03 18.58746 13 21 23.821 -06 41 03.42 24.3r 15GQ54 568 C~2lV8 2015 03 20.55033 13 21 16.161 -06 40 10.86 24.6r 15GQ54 568 C~2lV8 2015 04 11.48481 13 19 44.057 -06 29 56.43 24.6r 15GQ54 568 C~2lV8 2015 04 13.34921 13 19 35.998 -06 29 03.73 24.6r 15GQ54 568 C~2lV8 2015 04 13.39016 13 19 35.822 -06 29 02.70 24.6r 15GQ54 568 C~2lV8 2015 04 13.45967 13 19 35.508 -06 29 00.72 24.2r 15GQ54 568 C~2lV8 2015 04 19.39003 13 19 09.898 -06 26 14.30 24.4r 15GQ54 568 C~2lV8 2015 05 18.25525 13 17 16.935 -06 14 16.55 24.4r 15GQ54 568 C~2lV8 2015 06 20.26264 13 16 00.492 -06 06 28.86 24.4r 15GQ54 568 C~2lV8 2015 06 20.30355 13 16 00.440 -06 06 28.61 24.3r 15GQ54 568 C~2lV8 2015 06 22.30724 13 15 58.329 -06 06 16.31 24.5r 15GQ54 568 C~2lV8 2015 07 14.25857 13 15 56.399 -06 06 12.69 24.6r 15GQ54 568 C~2lV8 2015 07 20.24993 13 16 02.725 -06 06 53.88 24.1r 15GQ54 568 C~2lV8 2015 07 20.26062 13 16 02.744 -06 06 53.95 24.0r 15GQ54 568 C~2lV8 2016 02 04.54710 13 27 47.619 -07 08 33.12 24.6w 15GQ54 568 C~2lV8 2016 02 10.53503 13 27 39.750 -07 07 17.38 24.6w 15GQ54 568 C~2lV8 2016 03 11.53623 13 26 20.855 -06 57 18.84 24.9w 15GQ54 568 C~2lV8 2016 04 03.42508 13 24 50.033 -06 47 03.55 24.5w 15GQ54 568 C~2lV8 2016 04 09.40482 13 24 24.312 -06 44 15.09 24.4w 15GQ54 568 C~2lV8 2016 05 02.29500 13 22 47.314 -06 33 54.72 25.0w 15GQ54 568 C~2lV8 2016 05 06.30476 13 22 31.421 -06 32 15.35 25.2w 15GQ54 568 C~2lV8 2016 05 28.26791 13 21 16.897 -06 24 37.21 24.7w 15GQ54 568 C~2lV8 2016 06 04.34936 13 20 58.618 -06 22 47.77 24.7w 15GQ54 568 C~2lV8 2016 06 27.26867 13 20 24.093 -06 19 30.60 25.0w 15GQ54 568 C~2lV8 2016 07 06.30443 13 20 21.778 -06 19 22.85 24.7w 15GQ54 568 C~2lV8 2017 02 24.62428 13 31 39.638 -07 16 15.57 15GQ54 568 C~2lV8 2017 02 24.63510 13 31 39.583 -07 16 15.27 15GQ54 568 C~2lV8 2017 03 28.56025 13 29 49.075 -07 03 19.25 15GQ54 568 C~2lV8 2017 03 28.56493 13 29 49.045 -07 03 19.37 24.7w 15GQ54 568 C~2lV8 2017 06 21.28313 13 24 59.307 -06 33 27.02 24.8w 15GQ54 568 C~2lV8 2017 07 27.26646 13 25 07.837 -06 34 53.41 24.0w 15GQ54 568 C~2lV8
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 -0.03 0.00 -0.03
2 0.0001 -1.71 -0.17 0.18 -0.00
3 0.0793 -1496.65 -0.26 105.92 0.07
4 0.0795 -1499.11 -0.08 105.93 -0.04
5 0.0848 -1624.61 -0.03 112.13 0.04
6 0.1449 -3127.42 0.00 169.76 0.03
7 0.1500 -3258.55 0.17 173.75 0.01
8 0.1501 -3261.37 0.27 173.72 -0.08
9 0.1503 -3266.45 0.17 173.81 -0.11
10 0.1665 -3682.82 -0.11 185.46 -0.01
11 0.2455 -5514.07 0.15 220.56 -0.20
12 0.3359 -6747.35 -0.05 226.54 0.07
13 0.3360 -6748.16 -0.08 226.48 0.04
14 0.3415 -6782.00 -0.04 226.06 0.07
15 0.4016 -6810.07 -0.06 218.61 0.35
16 0.4180 -6707.04 -0.06 215.84 -0.01
17 0.4180 -6706.76 0.01 215.88 0.04
18 0.9637 4420.64 0.05 696.73 0.08
19 0.9801 4283.75 0.10 723.79 0.05
20 1.0622 2970.69 -0.04 844.99 -0.24
21 1.1249 1486.22 0.00 914.71 -0.05
22 1.1412 1067.90 -0.03 928.83 -0.06
23 1.2039 -504.36 0.22 967.28 0.06
24 1.2149 -761.17 0.05 971.33 -0.06
25 1.2750 -1962.69 0.06 982.55 0.00
26 1.2944 -2256.36 -0.04 982.45 0.07
27 1.3572 -2807.54 0.01 973.29 -0.17
28 1.3819 -2842.46 -0.04 967.59 -0.04
29 2.0207 7803.74 0.24 1541.00 0.10
30 2.0207 7802.87 -0.16 1540.98 0.04
31 2.1081 5985.91 -0.04 1656.51 0.03
32 2.1081 5985.54 -0.09 1656.23 -0.26
33 2.3401 1311.38 0.05 1724.23 -0.04
34 2.4386 1461.49 -0.15 1691.19 0.24
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.
15GQ54 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.233 39.252 39.214 ecceobj 0.181 0.182 0.180 incobj 10.760 10.760 10.760 qmin 31.667 31.658 31.712 qmax 47.523 47.537 47.489 amean 39.456 39.456 39.456 amin 39.132 39.146 39.125 amax 39.820 39.812 39.844 emean 0.172 0.173 0.172 emin 0.149 0.150 0.147 emax 0.194 0.195 0.194 imean 10.927 10.912 10.939 imin 10.200 10.187 10.221 imax 11.669 11.675 11.676 excite_mean 0.256 0.257 0.256 fracstop 1.000 1.000 1.000 cjmean 2.977 2.977 2.977 libcent 0 180.0 179.9 180.0 libamp 0 19.6 11.5 30.2 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 176.4 177.4 175.3 kozaiamp 180.0 180.0 179.9