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: 19GH185
# Created Mon Apr 28 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 4.20y
# First observation: 2015/03/17
# Last observation: 2019/05/28
Preliminary a, adot, b, bdot, g, gdot:
0.000027 0.035507 -0.000000 -0.002541 0.029427 0.000000
# Chi-squared of fit: 7.65 DOF: 22 RMS: 0.13
# Min/Max residuals: -0.36 0.21
# Exact a, adot, b, bdot, g, gdot:
1.981539E-05 3.494897E-02 -1.402599E-06 -2.526229E-03 2.804274E-02 -2.499484E-03
# Covariance matrix:
7.3220E-13 -6.1291E-13 -1.3209E-14 3.4624E-14 -3.1367E-13 -3.0280E-12
-6.1291E-13 1.7505E-12 4.6627E-14 -1.2360E-13 1.4179E-12 1.0948E-11
-1.3209E-14 4.6627E-14 5.9853E-13 -1.5571E-13 3.4789E-14 3.0355E-13
3.4624E-14 -1.2360E-13 -1.5571E-13 5.5989E-14 -9.4828E-14 -8.0210E-13
-3.1367E-13 1.4179E-12 3.4789E-14 -9.4828E-14 1.6461E-12 8.6590E-12
-3.0280E-12 1.0948E-11 3.0355E-13 -8.0210E-13 8.6590E-12 7.0795E-11
# lat0 lon0 xBary yBary zBary JD0
8.604236 -166.940189 0.284161 0.142296 -0.939593 2457099.036332
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 355.41560 +/- 0.013
Argument of Peri: 129.83756 +/- 0.042
Long of Asc Node: 76.47179 +/- 0.002
Inclination: 9.31943 +/- 0.000
Eccentricity: 0.46399438 +/- 0.0002
Semi-Major Axis: 67.64700462 +/- 0.0216
Time of Perihelion: 2459678.4226 +/- 7.5
Perihelion: 36.25917454 +/- 0.0163
Aphelion: 99.03483470 +/- 0.0337
Period (y) 556.3922 +/- 0.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -35.33944857 +/- 0.0016
Ecliptic Y -7.90547643 +/- 0.0004
Ecliptic Z 5.33498581 +/- 0.0002
Ecliptic XDOT 0.00096670 +/- 0.0000
Ecliptic YDOT -0.00328344 +/- 0.0000
Ecliptic ZDOT -0.00028028 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.60376014 +/- 0.0015
Geocenter to KBO 35.65985301 +/- 0.0016
# Hcoef: 8.74
The following table shows the complete astrometric record for 19GH185. 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 (19GH185) followed by the observatory code and reference code for the source of the astrometry.
2015 03 17.535554 13 01 25.35 +02 46 25.0 19GH185 T09 C~85KE 2015 03 17.607820 13 01 25.02 +02 46 27.4 19GH185 T09 C~85KE 2017 04 26.358758 13 12 34.97 +01 15 24.3 19GH185 T09 C~85KE 2017 04 26.388715 13 12 34.83 +01 15 25.0 19GH185 T09 C~85KE 2019 03 11.593533 13 30 44.48 -00 57 46.9 19GH185 T09 C~85KE 2019 03 11.627155 13 30 44.34 -00 57 46.2 19GH185 T09 C~85KE 2019 04 07.42061 13 28 42.19 -00 44 22.3 23.5i 19GH185 T09 C~85KE 2019 04 07.46130 13 28 41.99 -00 44 21.1 23.5i 19GH185 T09 C~85KE 2019 04 07.51785 13 28 41.69 -00 44 19.4 24.1i 19GH185 T09 C~85KE 2019 05 03.445822 13 26 34.15 -00 33 18.1 19GH185 T09 C~85KE 2019 05 28.27719 13 24 53.75 -00 27 18.9 24.5z 19GH185 T09 C~85KE 2019 05 28.30153 13 24 53.64 -00 27 18.7 24.6z 19GH185 T09 C~85KE 2019 05 28.35576 13 24 53.48 -00 27 18.2 23.9z 19GH185 T09 C~85KE 2019 05 28.39613 13 24 53.35 -00 27 18.0 24.8z 19GH185 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 -0.00
2 0.0002 -5.49 0.04 0.29 0.10
3 2.1104 11382.85 -0.04 -1129.14 -0.10
4 2.1105 11380.63 0.01 -1129.31 -0.06
5 3.9837 29739.87 0.10 -2129.05 -0.06
6 3.9838 29737.61 0.14 -2129.23 -0.36
7 4.0572 27698.20 -0.10 -2101.47 0.01
8 4.0573 27694.92 -0.02 -2101.54 0.06
9 4.0574 27690.02 -0.24 -2101.72 0.03
10 4.1284 25636.82 0.02 -2238.41 -0.12
11 4.1964 24087.90 0.16 -2495.60 0.14
12 4.1965 24086.28 -0.24 -2496.06 -0.01
13 4.1966 24083.84 0.04 -2496.54 0.21
14 4.1967 24081.94 0.16 -2497.11 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.
19GH185 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 66.399 66.447 66.351 ecceobj 0.454 0.454 0.454 incobj 9.319 9.319 9.319 qmin 35.250 35.282 35.387 qmax 101.796 101.106 100.949 amean 67.448 67.120 67.115 amin 66.042 65.993 66.047 amax 69.016 68.534 68.571 emean 0.464 0.460 0.459 emin 0.448 0.447 0.445 emax 0.477 0.476 0.473 imean 7.469 8.185 7.876 imin 6.683 7.575 7.241 imax 8.271 9.087 8.643 excite_mean 0.482 0.482 0.479 fracstop 1.000 1.000 1.000 cjmean 3.075 3.072 3.076 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 193.6 185.2 187.2 kozaiamp 179.9 180.0 179.9