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: 15GQ56
# Created Sun Dec 22 02:10:21 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 41 observations of 41
# Arc: 6.09y
# First observation: 2015/02/17
# Last observation: 2021/03/20
# Chi-squared of fit: 6.78 DOF: 76 RMS: 0.07
# Min/Max residuals: -0.19 0.22
# Exact a, adot, b, bdot, g, gdot:
1.308672E-05 1.785243E-02 -3.918391E-06 -5.842978E-03 2.152889E-02 -5.726702E-04
# Covariance matrix:
1.4991E-13 -5.3492E-14 -4.8190E-15 1.0995E-14 8.6079E-14 -3.1487E-13
-5.3492E-14 1.4651E-13 1.9451E-14 -4.5864E-14 3.3238E-14 1.3350E-12
-4.8190E-15 1.9451E-14 5.3156E-14 -2.4469E-14 5.9493E-15 2.0681E-13
1.0995E-14 -4.5864E-14 -2.4469E-14 3.7351E-14 -1.4422E-14 -4.8791E-13
8.6079E-14 3.3238E-14 5.9493E-15 -1.4422E-14 1.1104E-13 4.2529E-13
-3.1487E-13 1.3350E-12 2.0681E-13 -4.8791E-13 4.2529E-13 1.4206E-11
# lat0 lon0 xBary yBary zBary JD0
0.652388 -156.282032 0.811966 0.006503 -0.558090 2457070.998808
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 208.74944 +/- 0.089
Argument of Peri: 334.14815 +/- 0.089
Long of Asc Node: 24.69786 +/- 0.000
Inclination: 18.10654 +/- 0.000
Eccentricity: 0.10029631 +/- 0.0001
Semi-Major Axis: 43.13546287 +/- 0.0023
Time of Perihelion: 2500546.0026 +/- 26.2
Perihelion: 38.80913523 +/- 0.0050
Aphelion: 47.46179051 +/- 0.0053
Period (y) 283.3087 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.36356405 +/- 0.0007
Ecliptic Y -18.16335864 +/- 0.0003
Ecliptic Z 0.52868605 +/- 0.0000
Ecliptic XDOT 0.00096847 +/- 0.0000
Ecliptic YDOT -0.00205823 +/- 0.0000
Ecliptic ZDOT -0.00074375 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.01689559 +/- 0.0006
Geocenter to KBO 46.44925610 +/- 0.0007
# Hcoef: 7.21
The following table shows the complete astrometric record for 15GQ56. 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 (15GQ56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.49803 13 28 47.346 -08 36 01.59 23.7r 15GQ56 568 C~2nvS 2015 02 17.53937 13 28 47.254 -08 36 01.17 24.4r 15GQ56 568 C~2nvS 2015 02 20.46602 13 28 40.701 -08 35 30.71 24.0r 15GQ56 568 C~2nvS 2015 03 18.46248 13 27 19.791 -08 28 51.76 24.3r 15GQ56 568 C~2nvS 2015 03 18.51370 13 27 19.587 -08 28 50.84 24.1r 15GQ56 568 C~2nvS 2015 03 20.51543 13 27 12.000 -08 28 12.33 24.5r 15GQ56 568 C~2nvS 2015 04 11.40623 13 25 42.240 -08 20 35.98 23.7r 15GQ56 568 C~2nvS 2015 04 12.35891 13 25 38.197 -08 20 15.33 24.1r 15GQ56 568 C~2nvS 2015 04 12.39987 13 25 38.004 -08 20 14.50 24.2r 15GQ56 568 C~2nvS 2015 04 12.44684 13 25 37.807 -08 20 13.45 23.5r 15GQ56 568 C~2nvS 2015 04 14.45679 13 25 29.245 -08 19 29.97 23.7r 15GQ56 568 C~2nvS 2015 04 16.39466 13 25 20.995 -08 18 48.04 23.6r 15GQ56 568 C~2nvS 2015 04 16.40115 13 25 20.976 -08 18 47.97 23.5r 15GQ56 568 C~2nvS 2015 04 18.41739 13 25 12.400 -08 18 04.48 23.5r 15GQ56 568 C~2nvS 2015 04 18.46519 13 25 12.192 -08 18 03.70 24.8r 15GQ56 568 C~2nvS 2015 05 16.26178 13 23 22.261 -08 08 57.85 23.7r 15GQ56 568 C~2nvS 2015 05 25.36747 13 22 52.397 -08 06 37.16 24.1r 15GQ56 568 C~2nvS 2015 05 25.40947 13 22 52.271 -08 06 36.60 23.7r 15GQ56 568 C~2nvS 2015 05 25.41889 13 22 52.227 -08 06 36.50 23.4r 15GQ56 568 C~2nvS 2015 05 25.42508 13 22 52.227 -08 06 36.42 23.6r 15GQ56 568 C~2nvS 2015 06 21.31770 13 21 52.978 -08 02 35.77 23.5r 15GQ56 568 C~2nvS 2015 06 22.27415 13 21 51.790 -08 02 32.78 23.6r 15GQ56 568 C~2nvS 2015 07 12.26825 13 21 42.911 -08 03 04.73 25.0r 15GQ56 568 C~2nvS 2015 07 15.25837 13 21 44.260 -08 03 25.43 23.7r 15GQ56 568 C~2nvS 2015 07 19.25817 13 21 47.149 -08 03 59.35 24.3r 15GQ56 568 C~2nvS 2016 02 04.55924 13 32 30.126 -09 18 39.57 23.6w 15GQ56 568 C~2nvS 2016 02 10.54717 13 32 22.331 -09 18 12.74 25.1w 15GQ56 568 C~2nvS 2016 02 10.59675 13 32 22.237 -09 18 12.36 24.1w 15GQ56 568 C~2nvS 2016 03 11.55881 13 31 05.082 -09 12 19.42 23.9w 15GQ56 568 C~2nvS 2016 04 03.44530 13 29 36.114 -09 04 57.40 24.6w 15GQ56 568 C~2nvS 2016 04 09.42510 13 29 10.811 -09 02 50.29 23.5w 15GQ56 568 C~2nvS 2016 05 01.36049 13 27 38.520 -08 55 07.52 23.7w 15GQ56 568 C~2nvS 2016 05 02.30311 13 27 34.728 -08 54 48.89 23.7w 15GQ56 568 C~2nvS 2016 05 06.31289 13 27 18.836 -08 53 30.26 23.8w 15GQ56 568 C~2nvT 2016 05 28.28409 13 26 03.177 -08 47 26.69 23.6w 15GQ56 568 C~2nvT 2016 06 04.36558 13 25 44.123 -08 46 01.12 24.3w 15GQ56 568 C~2nvT 2016 06 27.29295 13 25 05.589 -08 43 40.62 24.3w 15GQ56 568 C~2nvT 2016 07 07.29554 13 25 01.002 -08 43 51.41 23.8w 15GQ56 568 C~2nvT 2017 03 29.44993 13 33 22.546 -09 48 29.16 24.3w 15GQ56 568 C~2nvT 2021 03 20.428810 13 47 48.356 -12 37 12.03 23.6G 15GQ56 G37 C~4iAL 2021 03 20.477610 13 47 48.155 -12 37 10.96 15GQ56 G37 C~4iAL
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 -0.07
2 0.0001 0.00 -0.04 0.00 -0.05
3 0.0081 0.00 -0.06 0.00 0.03
4 0.0793 0.00 -0.01 0.00 0.04
5 0.0794 0.00 -0.13 0.00 -0.01
6 0.0849 0.00 -0.00 0.00 0.09
7 0.1449 0.00 0.03 0.00 -0.02
8 0.1475 0.00 0.16 0.00 0.02
9 0.1476 0.00 -0.08 0.00 -0.04
10 0.1477 0.00 0.02 0.00 -0.00
11 0.1532 0.00 0.01 0.00 0.00
12 0.1585 0.00 -0.06 0.00 0.09
13 0.1585 0.00 0.08 0.00 0.02
14 0.1641 0.00 -0.03 0.00 0.11
15 0.1642 0.00 -0.05 0.00 -0.14
16 0.2403 0.00 0.02 0.00 -0.01
17 0.2652 0.00 -0.03 0.00 0.01
18 0.2653 0.00 0.03 0.00 -0.02
19 0.2654 0.00 -0.19 0.00 -0.06
20 0.2654 0.00 0.10 0.00 -0.06
21 0.3390 0.00 -0.00 0.00 0.03
22 0.3416 0.00 -0.05 0.00 -0.01
23 0.3964 0.00 -0.05 0.00 -0.06
24 0.4045 0.00 0.06 0.00 -0.11
25 0.4155 0.00 0.03 0.00 0.09
26 0.9639 0.00 0.03 0.00 -0.01
27 0.9803 0.00 0.20 0.00 0.00
28 0.9804 0.00 -0.00 0.00 0.10
29 1.0625 0.00 -0.11 0.00 -0.03
30 1.1251 0.00 -0.01 0.00 0.02
31 1.1415 0.00 -0.04 0.00 -0.00
32 1.2015 0.00 0.02 0.00 0.22
33 1.2041 0.00 0.07 0.00 -0.02
34 1.2151 0.00 -0.04 0.00 -0.01
35 1.2753 0.00 -0.00 0.00 0.03
36 1.2946 0.00 -0.03 0.00 0.02
37 1.3574 0.00 -0.04 0.00 -0.02
38 1.3848 0.00 0.02 0.00 0.00
39 2.1108 0.00 0.00 0.00 -0.05
40 6.0861 0.00 0.11 0.00 -0.15
41 6.0862 0.00 -0.13 0.00 0.13
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.
15GQ56 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.795 42.795 42.795 ecceobj 0.109 0.109 0.109 incobj 18.197 18.197 18.197 qmin 37.611 37.611 37.599 qmax 48.795 48.799 48.832 amean 43.065 43.065 43.068 amin 42.716 42.716 42.715 amax 43.442 43.438 43.456 emean 0.109 0.109 0.109 emin 0.095 0.095 0.095 emax 0.124 0.124 0.124 imean 17.533 17.532 17.534 imin 17.010 17.008 17.015 imax 18.105 18.105 18.105 excite_mean 0.320 0.320 0.320 fracstop 1.000 1.000 1.000 cjmean 2.966 2.966 2.966 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 172.6 172.6 172.8 kozaiamp 180.0 180.0 180.0