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: 19GP187
# Created Sun Apr 27 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 1.77y
# First observation: 2018/04/22
# Last observation: 2020/01/30
Preliminary a, adot, b, bdot, g, gdot:
0.000160 0.022402 0.000000 -0.000293 0.023203 0.000000
# Chi-squared of fit: 3.05 DOF: 22 RMS: 0.08
# Min/Max residuals: -0.19 0.13
# Exact a, adot, b, bdot, g, gdot:
1.510973E-05 2.242023E-02 -4.006661E-07 -2.934730E-04 2.344751E-02 -4.476472E-04
# Covariance matrix:
1.4661E-12 -2.0128E-12 -7.2117E-15 1.5892E-14 -6.0589E-13 -2.3284E-11
-2.0128E-12 3.4835E-12 1.9296E-14 -3.4968E-14 6.8302E-13 4.5373E-11
-7.2117E-15 1.9296E-14 8.7646E-13 -8.4137E-13 -3.4096E-15 2.6639E-13
1.5892E-14 -3.4968E-14 -8.4137E-13 9.1725E-13 -8.9251E-15 -6.1482E-13
-6.0589E-13 6.8302E-13 -3.4096E-15 -8.9251E-15 1.7554E-12 2.5833E-11
-2.3284E-11 4.5373E-11 2.6639E-13 -6.1482E-13 2.5833E-11 9.2239E-10
# lat0 lon0 xBary yBary zBary JD0
4.162540 -177.604143 -0.489047 0.063439 -0.870832 2458230.873652
# Heliocentric elements and errors
Epoch: 2458230.5000 = 2018/04/22
Mean Anomaly: 318.64520 +/- 3.391
Argument of Peri: 143.55902 +/- 3.544
Long of Asc Node: 82.07648 +/- 0.033
Inclination: 4.15445 +/- 0.001
Eccentricity: 0.01637812 +/- 0.0009
Semi-Major Axis: 44.05997366 +/- 0.0112
Time of Perihelion: 2470501.7333 +/- 1006.2
Perihelion: 43.33835415 +/- 0.0430
Aphelion: 44.78159317 +/- 0.0431
Period (y) 292.4654 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.35178307 +/- 0.0024
Ecliptic Y -2.31055682 +/- 0.0001
Ecliptic Z 3.09571186 +/- 0.0002
Ecliptic XDOT 0.00016565 +/- 0.0000
Ecliptic YDOT -0.00261778 +/- 0.0000
Ecliptic ZDOT -0.00003813 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.52354765 +/- 0.0024
Geocenter to KBO 42.64845092 +/- 0.0024
# Hcoef: 9.54
The following table shows the complete astrometric record for 19GP187. 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 (19GP187) followed by the observatory code and reference code for the source of the astrometry.
2018 04 22.372851 12 15 24.90 +02 52 00.0 19GP187 T09 C~89Vi 2019 02 05.544578 12 25 00.80 +01 47 22.4 19GP187 T09 C~89Vi 2019 03 03.574069 12 23 36.12 +01 58 05.5 19GP187 T09 C~89Vi 2019 03 03.614338 12 23 35.96 +01 58 06.7 19GP187 T09 C~89Vi 2019 04 04.44382 12 21 21.19 +02 12 58.5 25.9g 19GP187 T09 C~89Vi 2019 04 04.46353 12 21 21.10 +02 12 59.0 26.3g 19GP187 T09 C~89Vi 2019 04 04.48669 12 21 20.99 +02 12 59.6 26.3g 19GP187 T09 C~89Vi 2019 04 04.50558 12 21 20.92 +02 13 00.0 26.0g 19GP187 T09 C~89Vi 2019 04 04.51607 12 21 20.87 +02 13 00.3 26.1g 19GP187 T09 C~89Vi 2019 04 05.52660 12 21 16.54 +02 13 27.0 25.5r 19GP187 T09 C~89Vi 2019 04 05.54963 12 21 16.44 +02 13 27.7 26.4r 19GP187 T09 C~89Vi 2019 04 05.57896 12 21 16.30 +02 13 28.7 26.4r 19GP187 T09 C~89Vi 2019 04 06.343824 12 21 13.06 +02 13 48.5 19GP187 T09 C~89Vi 2020 01 30.649938 12 29 53.82 +01 13 51.6 19GP187 T09 C~89Vi
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 0.04
2 0.7917 9468.20 0.12 -114.18 0.05
3 0.8630 8044.92 -0.08 -31.56 -0.05
4 0.8631 8042.23 -0.11 -31.42 0.03
5 0.9502 5831.46 0.02 -20.08 0.07
6 0.9503 5830.02 -0.03 -20.16 0.03
7 0.9503 5828.27 -0.14 -20.27 -0.04
8 0.9504 5827.15 0.07 -20.32 -0.06
9 0.9504 5826.34 0.01 -20.35 -0.06
10 0.9532 5756.12 0.12 -21.76 -0.10
11 0.9533 5754.47 0.08 -21.72 -0.01
12 0.9533 5752.14 -0.19 -21.64 0.12
13 0.9554 5699.67 0.13 -22.86 -0.09
14 1.7749 14315.72 0.00 -201.12 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.
19GP187 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.710 43.742 43.677 ecceobj 0.008 0.008 0.008 incobj 4.155 4.154 4.155 qmin 42.819 42.813 42.785 qmax 45.115 45.199 45.066 amean 43.901 43.934 43.869 amin 43.566 43.596 43.533 amax 44.240 44.272 44.206 emean 0.009 0.009 0.009 emin 0.000 0.000 0.000 emax 0.020 0.021 0.020 imean 2.444 2.445 2.442 imin 1.782 1.793 1.770 imax 3.021 3.018 3.023 excite_mean 0.044 0.044 0.044 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 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 182.2 181.8 182.3 kozaiamp 180.0 179.9 180.0