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: 19GJ23
# Created Wed Dec 25 02:11:02 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 34 observations of 34
# Arc: 7.93y
# First observation: 2015/04/14
# Last observation: 2023/03/18
# Chi-squared of fit: 125.62 DOF: 62 RMS: 0.34
# Min/Max residuals: -1.03 1.54
# Exact a, adot, b, bdot, g, gdot:
1.564479E-05 2.360693E-02 1.005438E-06 -1.187836E-04 2.411522E-02 1.555866E-03
# Covariance matrix:
4.8102E-13 -1.6958E-13 -6.7061E-16 5.2068E-16 -4.2111E-14 -5.7862E-13
-1.6958E-13 1.1854E-13 5.4115E-16 -4.8365E-16 -6.7602E-14 5.2987E-13
-6.7061E-16 5.4115E-16 3.4224E-13 -6.2507E-14 9.8955E-17 2.8829E-15
5.2068E-16 -4.8365E-16 -6.2507E-14 1.3139E-14 2.0186E-16 -2.4709E-15
-4.2111E-14 -6.7602E-14 9.8955E-17 2.0186E-16 4.5216E-13 -1.9099E-13
-5.7862E-13 5.2987E-13 2.8829E-15 -2.4709E-15 -1.9099E-13 2.7180E-12
# lat0 lon0 xBary yBary zBary JD0
0.395333 -168.750499 -0.215247 0.006896 -0.976546 2457126.569878
# Heliocentric elements and errors
Epoch: 2457126.5000 = 2015/04/14
Mean Anomaly: 57.40755 +/- 0.047
Argument of Peri: 60.93991 +/- 0.060
Long of Asc Node: 64.82763 +/- 0.025
Inclination: 0.48181 +/- 0.000
Eccentricity: 0.08213983 +/- 0.0001
Semi-Major Axis: 44.17668227 +/- 0.0059
Time of Perihelion: 2440024.1977 +/- 14.4
Perihelion: 40.54801694 +/- 0.0068
Aphelion: 47.80534760 +/- 0.0076
Period (y) 293.6283 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.58879488 +/- 0.0011
Ecliptic Y -8.49135690 +/- 0.0002
Ecliptic Z 0.28614869 +/- 0.0000
Ecliptic XDOT 0.00034633 +/- 0.0000
Ecliptic YDOT -0.00266907 +/- 0.0000
Ecliptic ZDOT -0.00001218 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.44772009 +/- 0.0011
Geocenter to KBO 41.46757034 +/- 0.0012
# Hcoef: 7.04
The following table shows the complete astrometric record for 19GJ23. 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 (19GJ23) followed by the observatory code and reference code for the source of the astrometry.
2015 04 14.06910 12 41 59.33 -04 05 12.3 23.7V 19GJ23 W84 C~3k7Z 2015 04 14.14799 12 41 58.98 -04 05 10.0 19GJ23 W84 C~3k7Z 2015 04 14.23040 12 41 58.62 -04 05 07.8 19GJ23 W84 C~3k7Z 2019 04 05.11411 13 02 33.28 -06 16 09.0 22.2R 19GJ23 W93 C~36tK 2019 04 05.14227 13 02 33.20 -06 16 08.1 21.9R 19GJ23 W93 C~36tK 2019 04 05.16966 13 02 33.06 -06 16 07.0 22.6R 19GJ23 W93 C~36tK 2019 04 07.10118 13 02 24.48 -06 15 14.1 22.3R 19GJ23 W93 C~36tK 2019 04 07.15910 13 02 24.21 -06 15 12.5 22.0R 19GJ23 W93 C~36tK 2019 04 07.18689 13 02 24.04 -06 15 11.6 22.9R 19GJ23 W93 C~36tK 2020 01 30.30087 13 10 56.87 -07 08 26.1 19GJ23 W93 C~3k7Z 2020 01 30.32992 13 10 56.83 -07 08 25.7 19GJ23 W93 C~3k7Z 2020 01 31.29952 13 10 55.83 -07 08 19.0 19GJ23 W93 C~3k7Z 2020 01 31.33038 13 10 55.79 -07 08 18.6 19GJ23 W93 C~3k7Z 2020 01 31.36192 13 10 55.72 -07 08 18.5 23.4R 19GJ23 W93 C~3k7Z 2020 02 01.30099 13 10 54.67 -07 08 11.6 23.3R 19GJ23 W93 C~3k7Z 2020 02 01.33188 13 10 54.63 -07 08 11.3 23.2R 19GJ23 W93 C~3k7Z 2020 02 01.36265 13 10 54.61 -07 08 11.1 23.0R 19GJ23 W93 C~3k7Z 2020 03 01.23683 13 09 47.77 -07 01 12.9 23.1R 19GJ23 W93 C~3k7Z 2020 03 01.28328 13 09 47.64 -07 01 11.8 22.4R 19GJ23 W93 C~3k7Z 2020 03 01.29839 13 09 47.59 -07 01 11.3 22.6R 19GJ23 W93 C~3k7Z 2020 03 03.19854 13 09 41.17 -07 00 31.7 22.9R 19GJ23 W93 C~3k7Z 2020 03 03.23509 13 09 41.04 -07 00 31.2 22.8R 19GJ23 W93 C~3k7Z 2020 03 03.27110 13 09 40.92 -07 00 30.4 23.0R 19GJ23 W93 C~3k7Z 2021 03 20.18888 13 13 32.95 -07 24 29.7 19GJ23 W93 C~4iOz 2021 03 20.22871 13 13 32.71 -07 24 27.7 24.1R 19GJ23 W93 C~4iOz 2021 03 22.18242 13 13 24.65 -07 23 39.2 19GJ23 W93 C~4iOz 2021 03 22.20353 13 13 24.60 -07 23 39.4 23.7R 19GJ23 W93 C~4iOz 2021 03 22.22274 13 13 24.51 -07 23 38.7 23.5R 19GJ23 W93 C~4iOz 2021 03 24.16582 13 13 16.30 -07 22 49.2 23.8R 19GJ23 W93 C~4iOz 2021 03 24.19721 13 13 16.18 -07 22 48.4 23.5R 19GJ23 W93 C~4iOz 2021 03 24.23220 13 13 16.04 -07 22 47.4 23.5R 19GJ23 W93 C~4iOz 2023 03 18.405710 13 23 31.563 -08 25 27.84 23.2G 19GJ23 G37 C~6VJt 2023 03 18.446230 13 23 31.404 -08 25 27.08 19GJ23 G37 C~6VJt 2023 03 18.488210 13 23 31.206 -08 25 25.58 19GJ23 G37 C~6VJt
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 -0.12 0.00 -0.19
2 0.0002 0.00 -0.16 0.00 -0.05
3 0.0004 0.00 -0.12 0.00 -0.10
4 3.9755 0.00 -0.19 0.00 -0.44
5 3.9756 0.00 0.52 0.00 -0.31
6 3.9756 0.00 0.28 0.00 0.04
7 3.9809 0.00 0.42 0.00 -0.08
8 3.9811 0.00 0.30 0.00 -0.07
9 3.9812 0.00 -0.36 0.00 0.07
10 4.7973 0.00 0.21 0.00 -0.36
11 4.7974 0.00 0.08 0.00 -0.15
12 4.8001 0.00 0.26 0.00 -0.06
13 4.8002 0.00 0.20 0.00 0.12
14 4.8003 0.00 -0.30 0.00 -0.00
15 4.8028 0.00 -0.13 0.00 -0.01
16 4.8029 0.00 -0.16 0.00 0.05
17 4.8030 0.00 0.12 0.00 0.02
18 4.8820 0.00 -0.24 0.00 0.02
19 4.8822 0.00 0.18 0.00 0.17
20 4.8822 0.00 0.19 0.00 0.36
21 4.8874 0.00 -0.01 0.00 0.28
22 4.8875 0.00 -0.04 0.00 0.01
23 4.8876 0.00 0.05 0.00 0.04
24 5.9333 0.00 0.06 0.00 0.54
25 5.9334 0.00 -1.03 0.00 1.54
26 5.9387 0.00 -0.30 0.00 0.64
27 5.9388 0.00 0.30 0.00 -0.10
28 5.9388 0.00 0.18 0.00 0.11
29 5.9441 0.00 -0.31 0.00 -0.19
30 5.9442 0.00 -0.08 0.00 -0.19
31 5.9443 0.00 0.08 0.00 -0.10
32 7.9270 0.00 0.15 0.00 -0.58
33 7.9271 0.00 0.21 0.00 -0.77
34 7.9272 0.00 -0.23 0.00 -0.27
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.
19GJ23 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.748 43.748 43.748 ecceobj 0.078 0.078 0.078 incobj 0.482 0.482 0.482 qmin 39.348 39.345 39.350 qmax 48.841 48.862 48.900 amean 43.979 43.979 43.979 amin 43.625 43.636 43.623 amax 44.357 44.365 44.357 emean 0.085 0.085 0.085 emin 0.067 0.067 0.068 emax 0.102 0.102 0.102 imean 1.313 1.313 1.313 imin 0.385 0.385 0.385 imax 2.048 2.048 2.048 excite_mean 0.089 0.089 0.089 fracstop 1.000 1.000 1.000 cjmean 3.092 3.092 3.092 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 174.9 174.9 174.9 kozaiamp 180.0 180.0 180.0