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: 15GG54
# Created Sun Dec 22 02:10:19 2024
# Orbit generated from Bernstein formalism
# Fitting 42 observations of 42
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000264 0.034869 0.000001 -0.000415 0.030351 0.000000
# Chi-squared of fit: 11.31 DOF: 78 RMS: 0.09
# Min/Max residuals: -0.20 0.29
# Exact a, adot, b, bdot, g, gdot:
1.805611E-05 3.490119E-02 1.248016E-07 -4.172034E-04 3.059872E-02 8.470612E-03
# Covariance matrix:
1.6699E-13 -1.0226E-14 -9.7794E-17 -7.6865E-16 1.2146E-13 1.2214E-12
-1.0226E-14 2.8166E-13 3.6864E-16 -3.1729E-15 1.4940E-13 4.7906E-12
-9.7794E-17 3.6864E-16 7.8960E-14 -6.3138E-14 7.0067E-17 9.5276E-15
-7.6865E-16 -3.1729E-15 -6.3138E-14 9.0623E-14 -2.3608E-15 -7.9701E-14
1.2146E-13 1.4940E-13 7.0067E-17 -2.3608E-15 2.0423E-13 3.6309E-12
1.2214E-12 4.7906E-12 9.5276E-15 -7.9701E-14 3.6309E-12 1.2025E-10
# lat0 lon0 xBary yBary zBary JD0
0.603555 -155.482753 0.819593 0.005908 -0.546835 2457071.006958
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 40.06759 +/- 0.013
Argument of Peri: 72.70230 +/- 0.036
Long of Asc Node: 64.95038 +/- 0.021
Inclination: 0.88939 +/- 0.000
Eccentricity: 0.26645470 +/- 0.0003
Semi-Major Axis: 39.74280507 +/- 0.0074
Time of Perihelion: 2446885.1269 +/- 1.5
Perihelion: 29.15314772 +/- 0.0137
Aphelion: 50.33246242 +/- 0.0157
Period (y) 250.5509 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.57325274 +/- 0.0004
Ecliptic Y -13.04200750 +/- 0.0002
Ecliptic Z 0.34425585 +/- 0.0000
Ecliptic XDOT 0.00060232 +/- 0.0000
Ecliptic YDOT -0.00316148 +/- 0.0000
Ecliptic ZDOT -0.00002925 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.24058145 +/- 0.0004
Geocenter to KBO 32.68110809 +/- 0.0005
# Hcoef: 9.25
The following table shows the complete astrometric record for 15GG54. 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 (15GG54) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.50618 13 31 43.505 -08 56 22.04 24.1r 15GG54 568 C~2lV6 2015 02 17.54752 13 31 43.397 -08 56 21.24 24.4r 15GG54 568 C~2lV6 2015 02 20.47836 13 31 35.594 -08 55 33.51 24.9r 15GG54 568 C~2lV6 2015 03 18.46248 13 29 53.526 -08 45 22.35 24.7r 15GG54 568 C~2lV6 2015 03 18.51370 13 29 53.262 -08 45 20.83 24.0r 15GG54 568 C~2lV6 2015 03 20.51543 13 29 43.418 -08 44 22.43 24.5r 15GG54 568 C~2lV6 2015 04 11.40623 13 27 45.737 -08 32 49.70 24.3r 15GG54 568 C~2lV6 2015 04 12.35891 13 27 40.431 -08 32 18.37 24.4r 15GG54 568 C~2lV6 2015 04 12.39987 13 27 40.192 -08 32 17.27 24.2r 15GG54 568 C~2lV6 2015 04 12.44684 13 27 39.903 -08 32 15.69 24.1r 15GG54 568 C~2lV6 2015 04 14.45679 13 27 28.618 -08 31 09.72 24.5r 15GG54 568 C~2lV6 2015 04 16.40115 13 27 17.701 -08 30 05.80 24.0r 15GG54 568 C~2lV6 2015 04 18.41739 13 27 06.404 -08 28 59.82 24.4r 15GG54 568 C~2lV6 2015 04 18.46519 13 27 06.124 -08 28 58.31 24.5r 15GG54 568 C~2lV6 2015 05 16.26178 13 24 41.850 -08 15 02.35 24.4r 15GG54 568 C~2lV6 2015 05 25.36747 13 24 03.350 -08 11 22.81 24.3r 15GG54 568 C~2lV6 2015 05 25.40947 13 24 03.191 -08 11 21.80 24.8r 15GG54 568 C~2lV6 2015 05 25.41889 13 24 03.148 -08 11 21.69 24.2r 15GG54 568 C~2lV6 2015 05 25.42508 13 24 03.128 -08 11 21.44 25.0r 15GG54 568 C~2lV6 2015 06 21.31770 13 22 50.697 -08 04 43.16 24.5r 15GG54 568 C~2lV6 2015 06 22.27415 13 22 49.429 -08 04 36.84 24.7r 15GG54 568 C~2lV6 2015 07 12.26825 13 22 45.361 -08 04 40.23 24.6r 15GG54 568 C~2lV6 2015 07 19.25818 13 22 54.270 -08 05 42.74 24.5r 15GG54 568 C~2lV6 2016 02 04.60217 13 39 32.462 -09 43 15.28 24.9w 15GG54 568 C~2lV6 2016 02 10.62117 13 39 25.186 -09 42 28.64 24.9w 15GG54 568 C~2lV6 2016 03 11.58783 13 37 54.158 -09 33 27.30 24.7w 15GG54 568 C~2lV6 2016 03 11.63454 13 37 53.944 -09 33 26.17 24.1w 15GG54 568 C~2lV6 2016 03 12.48427 13 37 50.264 -09 33 04.32 24.8w 15GG54 568 C~2lV6 2016 04 09.44264 13 35 27.260 -09 19 15.80 24.6w 15GG54 568 C~2lV6 2016 05 02.31935 13 33 21.054 -09 07 12.41 24.5w 15GG54 568 C~2lV6 2016 05 02.32341 13 33 21.029 -09 07 12.38 24.6w 15GG54 568 C~2lV6 2016 05 06.32911 13 33 00.133 -09 05 13.38 24.5w 15GG54 568 C~2lV6 2016 05 06.33319 13 33 00.119 -09 05 13.34 24.8w 15GG54 568 C~2lV6 2016 05 28.31243 13 31 21.081 -08 55 54.90 25.0w 15GG54 568 C~2lV6 2016 05 29.31935 13 31 17.332 -08 55 34.10 24.5w 15GG54 568 C~2lV6 2016 06 04.38178 13 30 56.590 -08 53 39.56 24.8w 15GG54 568 C~2lV6 2016 06 27.30147 13 30 09.466 -08 49 32.10 25.0w 15GG54 568 C~2lV6 2016 06 27.30677 13 30 09.464 -08 49 31.88 24.7w 15GG54 568 C~2lV6 2016 07 07.30364 13 30 05.960 -08 49 24.63 24.7w 15GG54 568 C~2lV6 2017 02 24.65166 13 46 15.261 -10 22 37.02 15GG54 568 C~2lV6 2017 03 29.48748 13 43 57.446 -10 09 27.12 24.8w 15GG54 568 C~2lV6 2017 03 29.50900 13 43 57.337 -10 09 26.84 24.8w 15GG54 568 C~2lV6
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 -0.07
2 0.0001 -1.78 -0.06 0.16 0.08
3 0.0081 -126.85 -0.01 2.20 0.01
4 0.0793 -1758.46 0.06 15.55 -0.06
5 0.0794 -1762.66 -0.08 15.52 -0.07
6 0.0849 -1919.86 0.02 16.19 0.03
7 0.1448 -3797.86 -0.20 17.66 0.07
8 0.1474 -3882.60 0.27 17.76 0.28
9 0.1476 -3886.31 0.29 17.47 0.03
10 0.1477 -3890.87 -0.00 17.36 -0.04
11 0.1532 -4070.87 0.08 16.92 -0.09
12 0.1585 -4245.05 -0.03 16.56 -0.02
13 0.1640 -4425.25 0.05 16.01 0.00
14 0.1642 -4429.67 -0.03 15.88 -0.09
15 0.2403 -6729.81 -0.00 0.52 -0.08
16 0.2652 -7342.75 -0.11 -7.54 -0.09
17 0.2653 -7345.32 -0.03 -7.48 0.03
18 0.2653 -7345.95 -0.07 -7.61 -0.10
19 0.2653 -7346.32 -0.05 -7.49 0.03
20 0.3390 -8494.54 0.04 -37.11 0.02
21 0.3416 -8514.41 0.02 -38.24 0.04
22 0.3963 -8569.33 -0.13 -63.87 -0.06
23 0.4155 -8423.02 -0.02 -72.73 0.14
24 0.9640 7492.35 0.03 -95.09 0.01
25 0.9805 7375.03 -0.17 -90.46 0.02
26 1.0625 5922.69 -0.06 -72.83 -0.01
27 1.0626 5919.33 -0.14 -72.93 -0.10
28 1.0650 5860.63 0.07 -72.29 0.14
29 1.1415 3586.96 -0.01 -68.80 0.05
30 1.2041 1582.89 0.13 -76.60 0.06
31 1.2042 1582.53 0.12 -76.71 -0.04
32 1.2151 1250.94 -0.05 -79.04 0.01
33 1.2151 1250.73 0.08 -79.08 -0.02
34 1.2753 -319.11 0.11 -96.52 0.05
35 1.2781 -378.42 -0.02 -97.54 0.01
36 1.2947 -706.38 -0.01 -103.71 -0.02
37 1.3574 -1446.91 -0.03 -129.92 -0.20
38 1.3574 -1447.02 -0.06 -129.72 0.01
39 1.3848 -1497.99 -0.03 -142.06 -0.03
40 2.0209 13910.60 0.00 -164.81 0.04
41 2.1108 11720.08 -0.09 -153.72 0.16
42 2.1109 11718.47 0.11 -154.03 -0.15
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.
15GG54 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.363 39.386 39.339 ecceobj 0.261 0.262 0.260 incobj 0.890 0.890 0.890 qmin 28.573 28.543 28.620 qmax 51.065 51.208 51.095 amean 39.456 39.456 39.456 amin 38.924 38.930 38.915 amax 40.059 40.089 40.091 emean 0.260 0.261 0.260 emin 0.246 0.246 0.246 emax 0.276 0.277 0.276 imean 1.000 1.065 0.992 imin 0.524 0.574 0.512 imax 1.361 1.449 1.374 excite_mean 0.261 0.262 0.261 fracstop 1.000 1.000 1.000 cjmean 2.973 2.973 2.973 libcent 0 179.9 179.4 180.3 libamp 0 119.0 116.9 118.3 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 246.1 240.3 239.9 kozaiamp 179.9 180.0 179.7