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: 15GG55
# Created Fri Nov 22 02:10:19 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 2.34y
# First observation: 2015/02/17
# Last observation: 2017/06/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000110 0.030771 0.000005 0.000479 0.027591 0.000000
# Chi-squared of fit: 5.81 DOF: 44 RMS: 0.09
# Min/Max residuals: -0.26 0.18
# Exact a, adot, b, bdot, g, gdot:
1.755956E-05 3.069930E-02 8.136349E-07 4.799454E-04 2.762929E-02 2.156889E-03
# Covariance matrix:
2.1959E-13 2.6015E-14 -2.3870E-15 2.7739E-15 1.8424E-13 2.0189E-12
2.6015E-14 5.8592E-13 -5.3067E-15 1.3758E-14 3.2022E-13 1.1547E-11
-2.3870E-15 -5.3067E-15 1.0516E-13 -7.3799E-14 -5.1874E-15 -1.2456E-13
2.7739E-15 1.3758E-14 -7.3799E-14 1.1626E-13 9.1943E-15 3.3864E-13
1.8424E-13 3.2022E-13 -5.1874E-15 9.1943E-15 3.6312E-13 7.3315E-12
2.0189E-12 1.1547E-11 -1.2456E-13 3.3864E-13 7.3315E-12 2.8564E-10
# lat0 lon0 xBary yBary zBary JD0
2.841179 -157.999989 0.794099 0.029052 -0.582550 2457071.072988
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 14.40668 +/- 0.138
Argument of Peri: 50.82029 +/- 0.202
Long of Asc Node: 129.60791 +/- 0.012
Inclination: 2.95344 +/- 0.000
Eccentricity: 0.16709786 +/- 0.0002
Semi-Major Axis: 43.77262419 +/- 0.0052
Time of Perihelion: 2452837.3500 +/- 40.6
Perihelion: 36.45831229 +/- 0.0117
Aphelion: 51.08693608 +/- 0.0125
Period (y) 289.6090 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.35780771 +/- 0.0007
Ecliptic Y -13.02386531 +/- 0.0003
Ecliptic Z 1.79405399 +/- 0.0000
Ecliptic XDOT 0.00094019 +/- 0.0000
Ecliptic YDOT -0.00290521 +/- 0.0000
Ecliptic ZDOT 0.00005819 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.78720767 +/- 0.0007
Geocenter to KBO 36.19346987 +/- 0.0008
# Hcoef: 9.08
The following table shows the complete astrometric record for 15GG55. 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 (15GG55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.57221 13 25 36.987 -05 55 55.49 24.5r 15GG55 568 C~2lVA 2015 02 17.61316 13 25 36.887 -05 55 54.65 24.8r 15GG55 568 C~2lVA 2015 02 20.60593 13 25 29.240 -05 54 55.60 25.0r 15GG55 568 C~2lVA 2015 03 18.55062 13 23 54.521 -05 43 58.07 24.5r 15GG55 568 C~2lVA 2015 03 18.59161 13 23 54.334 -05 43 56.81 24.1r 15GG55 568 C~2lVA 2015 04 11.48904 13 21 58.707 -05 31 48.20 24.4r 15GG55 568 C~2lVA 2015 04 13.35330 13 21 49.315 -05 30 51.06 24.5r 15GG55 568 C~2lVA 2015 04 13.39426 13 21 49.090 -05 30 49.84 24.8r 15GG55 568 C~2lVA 2015 04 13.46376 13 21 48.738 -05 30 47.69 24.3r 15GG55 568 C~2lVA 2015 04 13.46849 13 21 48.716 -05 30 47.66 24.7r 15GG55 568 C~2lVA 2015 04 19.39411 13 21 18.906 -05 27 49.22 25.2r 15GG55 568 C~2lVA 2015 04 19.50579 13 21 18.346 -05 27 45.62 24.8r 15GG55 568 C~2lVA 2015 05 18.26844 13 19 07.281 -05 15 22.00 24.5r 15GG55 568 C~2lVA 2015 06 20.26671 13 17 40.017 -05 08 37.07 24.9r 15GG55 568 C~2lVA 2015 06 20.30767 13 17 39.963 -05 08 36.90 24.6r 15GG55 568 C~2lVA 2015 06 22.31136 13 17 37.698 -05 08 32.24 25.6r 15GG55 568 C~2lVA 2016 02 04.54302 13 32 35.576 -06 36 34.87 25.3w 15GG55 568 C~2lVA 2016 04 03.41700 13 29 16.861 -06 13 37.09 24.7w 15GG55 568 C~2lVA 2016 04 09.39674 13 28 46.954 -06 10 34.62 25.1w 15GG55 568 C~2lVA 2016 05 01.39731 13 26 57.668 -05 59 54.78 24.1w 15GG55 568 C~2lVA 2016 05 28.26386 13 25 07.420 -05 50 04.36 24.8w 15GG55 568 C~2lVA 2016 06 04.34531 13 24 46.084 -05 48 22.65 25.1w 15GG55 568 C~2lVA 2017 02 24.63168 13 38 32.083 -07 08 00.35 15GG55 568 C~2lVA 2017 03 29.44523 13 36 23.387 -06 53 49.91 24.7w 15GG55 568 C~2lVA 2017 06 22.27110 13 30 45.483 -06 23 25.14 25.2w 15GG55 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 0.00 0.00 -0.11
2 0.0001 -1.70 0.02 0.23 -0.04
3 0.0083 -129.55 -0.05 12.76 -0.03
4 0.0793 -1686.13 0.06 98.68 -0.15
5 0.0795 -1689.19 0.03 98.81 -0.10
6 0.1449 -3562.70 0.07 133.28 0.04
7 0.1500 -3714.17 0.09 134.11 0.13
8 0.1501 -3717.74 -0.10 133.99 0.03
9 0.1503 -3723.42 -0.04 134.03 0.09
10 0.1503 -3723.74 0.04 133.93 -0.01
11 0.1665 -4203.45 0.06 133.77 -0.26
12 0.1668 -4212.56 0.08 133.99 0.05
13 0.2456 -6307.43 0.02 93.96 0.18
14 0.3359 -7669.45 -0.06 -17.56 0.10
15 0.3360 -7670.26 -0.08 -17.70 0.14
16 0.3415 -7703.44 -0.08 -26.04 0.03
17 0.9636 6703.26 -0.14 37.83 -0.18
18 1.1248 3439.92 0.03 227.26 -0.00
19 1.1412 2957.96 0.06 232.11 0.04
20 1.2014 1206.67 -0.07 223.72 0.12
21 1.2750 -539.94 0.02 162.46 -0.01
22 1.2944 -873.34 -0.00 138.76 0.04
23 2.0207 12346.44 -0.05 228.38 0.01
24 2.1105 10245.89 0.04 320.02 -0.03
25 2.3428 4885.53 0.07 168.10 -0.05
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.
15GG55 quality flag:2 Type: 7:4EEE 7:4EEE SCATNEAR axisobj 43.313 43.334 43.293 ecceobj 0.158 0.159 0.157 incobj 2.957 2.957 2.957 qmin 35.922 35.797 36.039 qmax 52.223 52.304 52.048 amean 43.726 43.727 43.646 amin 43.220 43.279 43.244 amax 44.297 44.268 44.271 emean 0.166 0.167 0.111 emin 0.154 0.153 0.071 emax 0.179 0.182 0.176 imean 2.490 2.358 3.180 imin 1.327 1.477 1.278 imax 3.629 3.301 4.476 excite_mean 0.172 0.172 0.126 fracstop 1.000 1.000 1.000 cjmean 3.062 3.062 3.078 libcent 0 179.2 178.3 -180.0 libamp 0 141.8 112.5 -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 164.6 149.1 175.5 kozaiamp 179.9 179.0 180.0