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: 15GG57
# Created Wed May 8 01:17:04 2024
# Orbit generated from Bernstein formalism
# Fitting 33 observations of 34
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000088 0.019475 -0.000000 0.000332 0.021666 0.000000
# Chi-squared of fit: 6.32 DOF: 60 RMS: 0.08
# Min/Max residuals: -0.20 0.25
# Exact a, adot, b, bdot, g, gdot:
1.382519E-05 1.936918E-02 9.142211E-08 3.298357E-04 2.169185E-02 -5.052811E-05
# Covariance matrix:
1.8410E-13 -3.0603E-14 -5.6508E-16 1.5406E-15 1.2573E-13 2.3967E-12
-3.0603E-14 2.5292E-13 -1.3263E-15 4.7881E-15 1.5165E-13 7.4088E-12
-5.6508E-16 -1.3263E-15 1.0568E-13 -8.5282E-14 -1.5240E-15 -7.2640E-14
1.5406E-15 4.7881E-15 -8.5282E-14 1.1836E-13 4.9318E-15 2.6764E-13
1.2573E-13 1.5165E-13 -1.5240E-15 4.9318E-15 2.4402E-13 7.6459E-12
2.3967E-12 7.4088E-12 -7.2640E-14 2.6764E-13 7.6459E-12 4.1399E-10
# lat0 lon0 xBary yBary zBary JD0
0.664963 -154.425058 0.829468 0.006318 -0.531734 2457071.015468
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 199.19671 +/- 0.929
Argument of Peri: 196.51403 +/- 0.930
Long of Asc Node: 170.89007 +/- 0.028
Inclination: 1.18554 +/- 0.001
Eccentricity: 0.05793040 +/- 0.0003
Semi-Major Axis: 44.20847456 +/- 0.0029
Time of Perihelion: 2505027.1831 +/- 277.1
Perihelion: 41.64745973 +/- 0.0143
Aphelion: 46.76948940 +/- 0.0143
Period (y) 293.9453 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.42112183 +/- 0.0010
Ecliptic Y -19.38108537 +/- 0.0004
Ecliptic Z 0.53501742 +/- 0.0000
Ecliptic XDOT 0.00105789 +/- 0.0000
Ecliptic YDOT -0.00220777 +/- 0.0000
Ecliptic ZDOT 0.00004165 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.64187272 +/- 0.0009
Geocenter to KBO 46.10027205 +/- 0.0010
# Hcoef: 7.57
The following table shows the complete astrometric record for 15GG57. 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 (15GG57) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.51469 13 35 48.290 -09 16 05.82 24.0r 15GG57 568 C~2nvV 2015 02 17.55579 13 35 48.206 -09 16 05.36 24.1r 15GG57 568 C~2nvV 2015 02 20.48657 13 35 42.350 -09 15 28.51 24.2r 15GG57 568 C~2nvV 2015 03 18.49249 13 34 26.731 -09 07 48.86 23.9r 15GG57 568 C~2nvV 2015 03 18.53407 13 34 26.579 -09 07 48.06 23.9r 15GG57 568 C~2nvV 2015 03 20.53726 13 34 19.303 -09 07 04.50 24.0r 15GG57 568 C~2nvV 2015 04 11.47256 13 32 52.229 -08 58 28.59 24.7r 15GG57 568 C~2nvV 2015 04 12.37938 13 32 48.459 -08 58 06.34 24.2r 15GG57 568 C~2nvV 2015 04 12.42509 13 32 48.276 -08 58 05.24 23.7r 15GG57 568 C~2nvV 2015 04 12.46730 13 32 48.092 -08 58 04.22 23.9r 15GG57 568 C~2nvV 2015 05 16.28656 13 30 34.345 -08 45 03.62 24.1r 15GG57 568 C~2nvV 2015 05 17.24686 13 30 31.010 -08 44 44.74 24.1r 15GG57 568 C~2nvV 2015 05 25.38864 13 30 04.550 -08 42 12.77 24.3r 15GG57 568 C~2nvV 2015 05 25.44647 13 30 04.372 -08 42 11.76 24.3r 15GG57 568 C~2nvV 2015 06 21.33827 13 29 04.771 -08 36 36.91 24.6r 15GG57 568 C~2nvV 2015 06 22.29486 13 29 03.568 -08 36 30.44 24.2r 15GG57 568 C~2nvV 2015 07 12.28879 13 28 54.302 -08 35 50.14 24.7r 15GG57 568 C~2nvV 2015 07 19.27863 13 28 58.458 -08 36 19.65 24.2r 15GG57 568 C~2nvV 2016 02 04.60217 13 40 19.339 -09 41 04.79 24.6w 15GG57 568 C~2nvV 2016 02 10.62117 13 40 13.175 -09 40 23.12 24.6w 15GG57 568 C~2nvV 2016 02 11.58525 13 40 11.934 -09 40 14.75 24.3w 15GG57 568 C~2nvV 2016 03 11.58783 13 39 03.329 -09 33 14.57 24.4w 15GG57 568 C~2nvV 2016 03 11.63454 13 39 03.170 -09 33 13.68 24.3w 15GG57 568 C~2nvV 2016 04 09.44264 13 37 13.669 -09 22 28.27 24.4w 15GG57 568 C~2nvV 2016 05 02.31935 13 35 39.344 -09 13 21.33 24.4w 15GG57 568 C~2nvV 2016 05 06.32911 13 35 23.594 -09 11 50.57 24.3w 15GG57 568 C~2nvV 2016 05 07.36327 13 35 19.610 -09 11 27.79 24.3w 15GG57 568 C~2nvV 2016 05 28.31243 13 34 08.055 -09 04 39.72 24.3w 15GG57 568 C~2nvV 2016 05 29.31935 13 34 05.149 -09 04 23.32 24.6w 15GG57 568 C~2nvV 2016 06 27.30147 13 33 09.590 -08 59 18.26 24.4w 15GG57 568 C~2nvV 2016 06 27.30677 13 33 09.589 -08 59 18.34 24.3w 15GG57 568 C~2nvV 2016 07 07.30364 13 33 04.611 -08 58 56.64 25.1w 15GG57 568 C~2nvV 2017 03 29.48748 13 42 16.157 -09 50 10.61 24.9w 15GG57 568 C~2nvV 2017 03 29.50900 13 42 16.061 -09 50 09.85 25.1w 15GG57 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 0.06 0.00 0.03
2 0.0001 -1.33 0.02 -0.02 -0.01
3 0.0081 -95.49 -0.02 2.78 0.02
4 0.0793 -1305.71 0.04 23.29 0.06
5 0.0795 -1308.10 0.08 23.22 -0.03
6 0.0849 -1424.33 -0.07 24.51 0.04
7 0.1450 -2813.66 0.04 34.06 -0.08
8 0.1475 -2873.80 -0.07 34.36 -0.07
9 0.1476 -2876.73 0.08 34.39 -0.02
10 0.1477 -2879.64 0.02 34.34 -0.07
11 0.2403 -5010.86 ( 0.12) 34.85 ( 0.45)
12 0.2429 -5063.82 0.05 34.27 0.10
13 0.2652 -5484.80 0.00 31.64 0.06
14 0.2654 -5487.63 0.02 31.61 0.07
15 0.3390 -6433.46 -0.08 18.23 0.02
16 0.3416 -6452.45 -0.05 17.68 0.04
17 0.3964 -6595.20 -0.07 4.60 0.07
18 0.4155 -6526.96 -0.02 -0.17 0.08
19 0.9640 4281.50 0.02 54.63 0.03
20 0.9804 4181.42 -0.09 60.64 -0.20
21 0.9831 4161.27 0.02 61.83 -0.01
22 1.0625 3063.04 -0.11 87.39 -0.15
23 1.0626 3060.53 -0.15 87.37 -0.19
24 1.1415 1316.41 -0.02 102.50 -0.00
25 1.2041 -183.19 0.25 105.07 -0.06
26 1.2151 -433.43 -0.05 104.79 0.07
27 1.2179 -496.67 0.03 104.55 -0.02
28 1.2753 -1632.26 -0.01 98.59 0.01
29 1.2780 -1678.32 -0.02 98.16 0.01
30 1.3574 -2556.03 -0.05 81.80 0.02
31 1.3574 -2556.02 0.04 81.72 -0.05
32 1.3848 -2632.61 0.03 74.98 0.06
33 2.1108 6090.28 0.15 166.86 -0.01
34 2.1109 6088.69 -0.09 167.06 0.19
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.
15GG57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.823 43.831 43.815 ecceobj 0.067 0.068 0.068 incobj 1.191 1.191 1.191 qmin 40.320 40.317 40.286 qmax 48.126 48.139 48.118 amean 44.104 44.112 44.099 amin 43.760 43.757 43.753 amax 44.466 44.482 44.464 emean 0.067 0.067 0.067 emin 0.051 0.051 0.051 emax 0.082 0.082 0.082 imean 2.113 2.112 2.116 imin 1.446 1.447 1.447 imax 2.748 2.747 2.752 excite_mean 0.076 0.076 0.076 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 186.3 186.0 186.3 kozaiamp 179.9 180.0 180.0