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: 19GG185
# Created Mon Apr 28 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 13 observations of 13
# Arc: 2.23y
# First observation: 2017/03/06
# Last observation: 2019/05/28
Preliminary a, adot, b, bdot, g, gdot:
0.000148 0.027329 -0.000006 -0.001542 0.025759 0.000000
# Chi-squared of fit: 5.82 DOF: 20 RMS: 0.12
# Min/Max residuals: -0.24 0.24
# Exact a, adot, b, bdot, g, gdot:
1.698748E-05 2.702939E-02 -1.055212E-06 -1.531126E-03 2.529330E-02 -3.628493E-03
# Covariance matrix:
1.2094E-12 1.9607E-12 -1.2568E-14 -1.4564E-13 2.1025E-12 4.6181E-11
1.9607E-12 8.2188E-12 -3.2476E-14 -5.4881E-13 6.8631E-12 1.7300E-10
-1.2568E-14 -3.2476E-14 5.2015E-13 -2.4379E-13 -3.7289E-14 -6.4840E-13
-1.4564E-13 -5.4881E-13 -2.4379E-13 1.8534E-13 -4.5514E-13 -1.1821E-11
2.1025E-12 6.8631E-12 -3.7289E-14 -4.5514E-13 6.4289E-12 1.4419E-10
4.6181E-11 1.7300E-10 -6.4840E-13 -1.1821E-11 1.4419E-10 3.7229E-09
# lat0 lon0 xBary yBary zBary JD0
7.919620 -161.242528 0.540271 0.114463 -0.821888 2457819.108116
# Heliocentric elements and errors
Epoch: 2457810.5000 = 2017/02/26
Mean Anomaly: 332.40681 +/- 0.224
Argument of Peri: 157.00086 +/- 0.442
Long of Asc Node: 85.75839 +/- 0.006
Inclination: 8.37002 +/- 0.000
Eccentricity: 0.24456766 +/- 0.0019
Semi-Major Axis: 50.36109791 +/- 0.0554
Time of Perihelion: 2467816.0409 +/- 79.4
Perihelion: 38.04440200 +/- 0.1041
Aphelion: 62.67779382 +/- 0.1177
Period (y) 357.3971 +/- 0.59
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.04173017 +/- 0.0037
Ecliptic Y -12.35237753 +/- 0.0012
Ecliptic Z 5.44742064 +/- 0.0005
Ecliptic XDOT 0.00129083 +/- 0.0000
Ecliptic YDOT -0.00265926 +/- 0.0000
Ecliptic ZDOT -0.00021834 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.36618457 +/- 0.0035
Geocenter to KBO 39.53615851 +/- 0.0040
# Hcoef: 8.69
The following table shows the complete astrometric record for 19GG185. 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 (19GG185) followed by the observatory code and reference code for the source of the astrometry.
2017 03 06.607315 13 21 13.26 -00 00 57.0 19GG185 T09 C~85KE 2017 04 01.496087 13 19 25.99 +00 11 35.7 19GG185 T09 C~85KE 2017 04 29.341463 13 17 18.93 +00 23 27.9 19GG185 T09 C~85KE 2019 03 30.629084 13 30 58.37 -01 10 14.4 19GG185 T09 C~85KE 2019 04 06.542914 13 30 26.87 -01 06 58.0 19GG185 T09 C~85KE 2019 04 06.574187 13 30 26.72 -01 06 57.2 19GG185 T09 C~85KE 2019 04 07.42061 13 30 22.80 -01 06 33.1 24.1i 19GG185 T09 C~85KE 2019 04 07.46130 13 30 22.61 -01 06 32.1 24.6i 19GG185 T09 C~85KE 2019 04 07.52052 13 30 22.33 -01 06 30.5 24.6i 19GG185 T09 C~85KE 2019 05 09.504048 13 27 57.19 -00 53 51.2 19GG185 T09 C~85KE 2019 05 28.30153 13 26 47.89 -00 49 35.6 24.5z 19GG185 T09 C~85KE 2019 05 28.34495 13 26 47.75 -00 49 35.1 24.4z 19GG185 T09 C~85KE 2019 05 28.39613 13 26 47.59 -00 49 34.6 24.7z 19GG185 T09 C~85KE
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 0.02
2 0.0709 -1774.10 0.04 91.23 0.01
3 0.1471 -3808.26 -0.02 33.19 -0.05
4 2.0644 9702.70 0.18 -547.58 -0.05
5 2.0833 9190.04 0.16 -543.33 0.00
6 2.0834 9187.65 0.15 -543.43 -0.09
7 2.0857 9123.98 -0.24 -543.22 0.24
8 2.0858 9120.96 -0.16 -543.37 0.13
9 2.0860 9116.46 -0.15 -543.46 0.08
10 2.1736 6810.52 0.06 -659.21 -0.23
11 2.2250 5750.39 0.01 -813.71 -0.12
12 2.2252 5748.26 -0.03 -814.04 -0.01
13 2.2253 5745.84 0.02 -814.48 0.06
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.
19GG185 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 49.583 49.692 49.479 ecceobj 0.235 0.239 0.230 incobj 8.374 8.375 8.374 qmin 37.378 37.288 37.525 qmax 62.987 63.403 62.536 amean 49.923 50.042 49.821 amin 49.445 49.546 49.345 amax 50.492 50.640 50.381 emean 0.236 0.240 0.232 emin 0.224 0.227 0.220 emax 0.249 0.253 0.243 imean 6.512 6.480 6.516 imin 6.024 5.980 6.023 imax 7.055 6.996 7.057 excite_mean 0.262 0.265 0.258 fracstop 1.000 1.000 1.000 cjmean 3.089 3.088 3.090 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 182.7 180.6 182.8 kozaiamp 180.0 180.0 180.0