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: 15GQ55
# Created Fri Nov 22 02:10:19 2024
# Orbit generated from Bernstein formalism
# Fitting 40 observations of 40
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000089 0.020969 -0.000007 0.007884 0.023450 0.000000
# Chi-squared of fit: 11.56 DOF: 74 RMS: 0.10
# Min/Max residuals: -0.21 0.32
# Exact a, adot, b, bdot, g, gdot:
1.334930E-05 2.086378E-02 4.832948E-06 7.832651E-03 2.345818E-02 -1.764606E-03
# Covariance matrix:
1.6080E-13 7.5413E-15 -9.2884E-15 3.8144E-14 1.2862E-13 2.4712E-12
7.5413E-15 1.8088E-13 -1.9663E-14 8.3973E-14 1.3932E-13 5.4534E-12
-9.2884E-15 -1.9663E-14 8.3899E-14 -7.8416E-14 -2.3870E-14 -1.2264E-12
3.8144E-14 8.3973E-14 -7.8416E-14 1.6354E-13 1.0049E-13 5.2903E-12
1.2862E-13 1.3932E-13 -2.3870E-14 1.0049E-13 2.2889E-13 6.5204E-12
2.4712E-12 5.4534E-12 -1.2264E-12 5.2903E-12 6.5204E-12 3.4377E-10
# lat0 lon0 xBary yBary zBary JD0
1.548787 -154.942271 0.824715 0.014718 -0.538911 2457071.006958
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 272.68241 +/- 0.087
Argument of Peri: 102.49422 +/- 0.064
Long of Asc Node: 199.90189 +/- 0.000
Inclination: 20.66399 +/- 0.001
Eccentricity: 0.09474937 +/- 0.0008
Semi-Major Axis: 42.98378054 +/- 0.0069
Time of Perihelion: 2482036.8235 +/- 24.1
Perihelion: 38.91109440 +/- 0.0356
Aphelion: 47.05646668 +/- 0.0359
Period (y) 281.8157 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.44320313 +/- 0.0008
Ecliptic Y -17.52928925 +/- 0.0004
Ecliptic Z 1.15238458 +/- 0.0000
Ecliptic XDOT 0.00123655 +/- 0.0000
Ecliptic YDOT -0.00211378 +/- 0.0000
Ecliptic ZDOT 0.00090836 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.17835390 +/- 0.0007
Geocenter to KBO 42.62905347 +/- 0.0009
# Hcoef: 8.10
The following table shows the complete astrometric record for 15GQ55. 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 (15GQ55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.50618 13 35 09.408 -08 15 24.81 24.8r 15GQ55 568 C~2lVB 2015 02 17.54752 13 35 09.308 -08 15 24.11 24.4r 15GQ55 568 C~2lVB 2015 02 20.47836 13 35 03.252 -08 14 29.08 24.5r 15GQ55 568 C~2lVB 2015 03 18.47955 13 33 44.059 -08 04 02.11 24.3r 15GQ55 568 C~2lVB 2015 03 18.48429 13 33 44.037 -08 04 01.95 24.4r 15GQ55 568 C~2lVB 2015 03 18.52590 13 33 43.883 -08 04 00.79 24.5r 15GQ55 568 C~2lVB 2015 03 20.52796 13 33 36.223 -08 03 04.30 24.4r 15GQ55 568 C~2lVB 2015 04 11.41852 13 32 04.586 -07 52 09.66 24.1r 15GQ55 568 C~2lVB 2015 04 12.37119 13 32 00.411 -07 51 40.66 24.6r 15GQ55 568 C~2lVB 2015 04 12.42087 13 32 00.189 -07 51 38.71 24.2r 15GQ55 568 C~2lVB 2015 04 12.45912 13 32 00.012 -07 51 37.95 24.2r 15GQ55 568 C~2lVB 2015 04 14.46908 13 31 51.202 -07 50 36.45 25.0r 15GQ55 568 C~2lVB 2015 04 18.42971 13 31 33.779 -07 48 35.39 24.2r 15GQ55 568 C~2lVB 2015 04 18.47743 13 31 33.567 -07 48 34.32 24.8r 15GQ55 568 C~2lVB 2015 05 16.27640 13 29 39.284 -07 35 30.17 24.3r 15GQ55 568 C~2lVB 2015 05 25.38047 13 29 08.171 -07 31 57.15 24.2r 15GQ55 568 C~2lVB 2015 05 25.43825 13 29 07.971 -07 31 55.94 24.3r 15GQ55 568 C~2lVB 2015 06 20.27906 13 28 08.264 -07 24 52.96 24.5r 15GQ55 568 C~2lVB 2015 06 20.31989 13 28 08.209 -07 24 52.49 24.4r 15GQ55 568 C~2lVB 2015 06 22.28659 13 28 05.689 -07 24 32.94 24.5r 15GQ55 568 C~2lVB 2015 07 14.27603 13 27 59.183 -07 23 05.89 24.2r 15GQ55 568 C~2lVB 2015 07 20.26893 13 28 04.507 -07 23 24.39 24.5r 15GQ55 568 C~2lVB 2016 02 04.59812 13 40 37.253 -08 19 40.95 25.0w 15GQ55 568 C~2lVB 2016 02 10.61713 13 40 31.269 -08 18 20.77 25.3w 15GQ55 568 C~2lVB 2016 03 11.56297 13 39 19.147 -08 07 51.16 23.6w 15GQ55 568 C~2lVB 2016 04 03.45339 13 37 49.593 -07 56 54.85 24.5w 15GQ55 568 C~2lVB 2016 04 09.43453 13 37 23.653 -07 53 52.92 24.5w 15GQ55 568 C~2lVB 2016 05 02.32746 13 35 44.021 -07 42 31.67 24.5w 15GQ55 568 C~2lVB 2016 05 06.33724 13 35 27.430 -07 40 40.14 24.7w 15GQ55 568 C~2lVB 2016 05 28.29624 13 34 08.161 -07 31 50.72 24.8w 15GQ55 568 C~2lVB 2016 05 28.30839 13 34 08.128 -07 31 50.45 24.9w 15GQ55 568 C~2lVB 2016 05 29.31531 13 34 05.090 -07 31 30.25 24.5w 15GQ55 568 C~2lVB 2016 06 04.37369 13 33 48.176 -07 29 36.83 24.7w 15GQ55 568 C~2lVB 2016 06 27.33366 13 33 08.011 -07 24 57.97 24.5w 15GQ55 568 C~2lVB 2016 06 27.34232 13 33 08.020 -07 24 57.82 25.2w 15GQ55 568 C~2lVB 2016 07 07.32400 13 33 03.653 -07 24 17.07 24.7w 15GQ55 568 C~2lVB 2016 07 07.33209 13 33 03.666 -07 24 16.98 24.6w 15GQ55 568 C~2lVC 2017 03 30.48302 13 43 22.582 -07 59 52.60 15GQ55 568 C~2lVC 2017 05 18.26658 13 39 56.176 -07 36 36.27 24.3w 15GQ55 568 C~2lVC 2017 06 24.30392 13 38 21.217 -07 26 20.94 24.3w 15GQ55 568 C~2lVC
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 0.15 0.00 0.09
2 0.0001 -1.64 -0.06 0.11 -0.04
3 0.0081 -105.40 -0.08 18.63 -0.05
4 0.0793 -1428.95 0.00 173.78 0.02
5 0.0793 -1429.32 -0.06 173.81 0.02
6 0.0795 -1431.87 0.03 174.05 0.06
7 0.0849 -1558.41 -0.11 185.13 0.03
8 0.1449 -3065.00 -0.10 297.03 0.09
9 0.1475 -3133.36 -0.02 301.32 -0.08
10 0.1476 -3137.14 -0.17 301.93 0.32
11 0.1477 -3139.87 -0.10 301.67 -0.09
12 0.1532 -3284.24 0.23 311.00 0.01
13 0.1641 -3569.57 -0.07 328.89 0.16
14 0.1642 -3572.90 0.09 328.73 -0.18
15 0.2403 -5441.80 0.18 435.42 0.04
16 0.2652 -5950.73 0.07 463.63 -0.08
17 0.2654 -5953.94 -0.09 463.66 -0.21
18 0.3361 -6936.23 0.00 530.53 -0.06
19 0.3362 -6937.16 0.04 530.66 0.00
20 0.3416 -6979.26 0.05 535.05 -0.03
21 0.4018 -7101.43 -0.05 580.40 -0.12
22 0.4182 -7020.89 -0.03 592.35 0.08
23 0.9640 4628.96 0.09 1525.65 -0.07
24 0.9805 4517.14 0.15 1568.37 -0.11
25 1.0624 3290.79 -0.03 1768.51 -0.05
26 1.1251 1813.01 -0.01 1898.52 0.01
27 1.1415 1387.84 -0.09 1928.26 0.01
28 1.2042 -239.23 0.03 2025.01 0.05
29 1.2151 -509.54 -0.05 2039.16 0.08
30 1.2753 -1800.11 -0.05 2102.87 -0.05
31 1.2753 -1800.67 0.01 2102.94 0.00
32 1.2781 -1850.11 -0.00 2105.28 -0.08
33 1.2946 -2125.72 0.02 2119.14 0.08
34 1.3575 -2783.81 -0.00 2160.73 0.03
35 1.3575 -2783.74 0.20 2160.92 0.21
36 1.3849 -2859.11 -0.13 2175.14 -0.12
37 1.3849 -2858.97 0.03 2175.29 0.03
38 2.1136 6492.92 -0.02 3519.70 -0.08
39 2.2471 3126.02 -0.02 3716.07 -0.04
40 2.3485 1586.48 -0.03 3778.53 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.
15GQ55 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.631 42.647 42.615 ecceobj 0.098 0.100 0.096 incobj 20.763 20.763 20.764 qmin 38.229 38.204 38.319 qmax 47.782 47.901 47.719 amean 42.886 42.908 42.881 amin 42.535 42.569 42.541 amax 43.247 43.271 43.252 emean 0.092 0.093 0.089 emin 0.079 0.081 0.076 emax 0.105 0.107 0.104 imean 21.200 21.208 21.208 imin 20.755 20.757 20.756 imax 21.613 21.627 21.615 excite_mean 0.373 0.374 0.373 fracstop 1.000 1.000 1.000 cjmean 2.918 2.917 2.918 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 188.3 185.8 184.7 kozaiamp 180.0 179.9 180.0