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: 19GB143
# Created Tue May 7 01:17:34 2024
# Orbit generated from Bernstein formalism
# Fitting 11 observations of 11
# Arc: 8.03d
# First observation: 2019/04/05
# Last observation: 2019/04/13
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 25.51 DOF: 18 RMS: 0.27
# Min/Max residuals: -0.61 0.46
# Exact a, adot, b, bdot, g, gdot:
1.601646E-05 2.681751E-02 9.627768E-08 -1.685121E-04 2.620319E-02 0.000000E+00
# Covariance matrix:
3.3566E-11 5.5086E-08 -2.5968E-13 -9.9285E-12 8.7899E-09 0.0000E+00
5.5086E-08 9.1401E-05 -4.3069E-10 -1.6467E-08 1.4579E-05 0.0000E+00
-2.5968E-13 -4.3069E-10 3.4272E-13 -2.0988E-11 -6.8699E-11 0.0000E+00
-9.9285E-12 -1.6467E-08 -2.0988E-11 2.1452E-09 -2.6266E-09 0.0000E+00
8.7899E-09 1.4579E-05 -6.8699E-11 -2.6266E-09 2.3254E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.3675E-04
# lat0 lon0 xBary yBary zBary JD0
1.121663 -161.261537 0.076201 0.019557 -0.996781 2458578.647611
# Heliocentric elements and errors
Epoch: 2458570.5000 = 2019/03/28
Mean Anomaly: 354.19564 +/- 26.844
Argument of Peri: 114.47086 +/- 94.654
Long of Asc Node: 90.44957 +/- 7.551
Inclination: 1.15056 +/- 0.051
Eccentricity: 0.04203066 +/- 0.5620
Semi-Major Axis: 40.86940167 +/- 21.6371
Time of Perihelion: 2460109.1765 +/- 197977.1
Perihelion: 39.15163372 +/- 30.9389
Aphelion: 42.58716961 +/- 32.1858
Period (y) 261.2797 +/- 207.49
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.10040312 +/- 2.1029
Ecliptic Y -12.51382614 +/- 0.7132
Ecliptic Z 0.74706380 +/- 0.0435
Ecliptic XDOT 0.00090812 +/- 0.0015
Ecliptic YDOT -0.00265464 +/- 0.0009
Ecliptic ZDOT -0.00001782 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.16112690 +/- 2.0052
Geocenter to KBO 38.16328727 +/- 2.2210
# Hcoef: 7.87
The following table shows the complete astrometric record for 19GB143. 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 (19GB143) followed by the observatory code and reference code for the source of the astrometry.
2019 04 05.14681 13 10 52.00 -06 18 13.8 23.7R 19GB143 W93 C~5ftD 2019 04 05.17434 13 10 51.85 -06 18 13.1 23.3R 19GB143 W93 C~5ftD 2019 04 07.10799 13 10 42.54 -06 17 15.9 19GB143 W93 C~5ftD 2019 04 07.13606 13 10 42.42 -06 17 15.2 19GB143 W93 C~5ftD 2019 04 07.16372 13 10 42.30 -06 17 14.6 23.5R 19GB143 W93 C~5ftD 2019 04 09.09946 13 10 32.98 -06 16 17.1 19GB143 W93 C~5ftD 2019 04 09.12816 13 10 32.81 -06 16 16.5 23.0R 19GB143 W93 C~5ftD 2019 04 09.15730 13 10 32.69 -06 16 15.7 19GB143 W93 C~5ftD 2019 04 13.11471 13 10 13.55 -06 14 20.1 19GB143 W93 C~5ftD 2019 04 13.14581 13 10 13.45 -06 14 18.8 19GB143 W93 C~5ftD 2019 04 13.17333 13 10 13.35 -06 14 18.0 19GB143 W93 C~5ftD
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 0.03 0.00 -0.04
2 0.0001 -2.33 -0.14 -0.20 -0.23
3 0.0054 -152.47 -0.32 0.12 0.02
4 0.0054 -154.39 -0.03 0.09 -0.00
5 0.0055 -156.27 0.27 -0.03 -0.11
6 0.0108 -306.66 0.21 0.50 0.46
7 0.0109 -309.23 -0.11 0.09 0.07
8 0.0110 -311.19 0.23 0.15 0.15
9 0.0218 -619.10 -0.59 -1.10 -0.61
10 0.0219 -620.98 -0.02 -0.46 0.05
11 0.0220 -622.66 0.46 -0.29 0.24
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.
19GB143 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0