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: 19QQ8 # Created Fri May 3 01:18:22 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 3.96y # First observation: 2016/06/05 # Last observation: 2020/05/20 # Chi-squared of fit: 17.24 DOF: 74 RMS: 0.12 # Min/Max residuals: -0.25 0.47 # Exact a, adot, b, bdot, g, gdot: 3.798056E-05 3.057099E-01 1.431572E-05 1.123206E-01 1.277310E-01 -1.731611E-01 # Covariance matrix: 1.5041E-09 -1.0579E-06 4.4588E-10 3.6525E-07 -1.5307E-10 -1.6017E-06 -1.0579E-06 1.4249E-03 -3.0018E-07 -4.9399E-04 1.0585E-07 2.1592E-03 4.4588E-10 -3.0018E-07 1.3302E-10 1.0346E-07 -4.5428E-11 -4.5439E-07 3.6525E-07 -4.9399E-04 1.0346E-07 1.7617E-04 -3.6542E-08 -7.5091E-04 -1.5307E-10 1.0585E-07 -4.5428E-11 -3.6542E-08 1.5587E-11 1.6027E-07 -1.6017E-06 2.1592E-03 -4.5439E-07 -7.5091E-04 1.6027E-07 3.2821E-03 # lat0 lon0 xBary yBary zBary JD0 16.663207 -117.341507 -0.217184 0.283336 -0.946276 2457544.862444 # Heliocentric elements and errors Epoch: 2457544.5000 = 2016/06/05 Mean Anomaly: 358.10587 +/- 0.001 Argument of Peri: 97.93136 +/- 0.000 Long of Asc Node: 206.89730 +/- 0.000 Inclination: 23.60563 +/- 0.000 Eccentricity: 0.88819259 +/- 0.0000 Semi-Major Axis: 61.05351040 +/- 0.0000 Time of Perihelion: 2458461.2927 +/- 0.4 Perihelion: 6.82623508 +/- 0.0002 Aphelion: 115.28078572 +/- 0.0002 Period (y) 477.0613 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -3.70901231 +/- 0.0000 Ecliptic Y -7.64208812 +/- 0.0000 Ecliptic Z 2.24508846 +/- 0.0000 Ecliptic XDOT 0.00777161 +/- 0.0000 Ecliptic YDOT 0.00075512 +/- 0.0000 Ecliptic ZDOT 0.00124214 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 8.78644022 +/- 0.0000 Geocenter to KBO 7.82915490 +/- 0.0000 # Hcoef: 13.85
The following table shows the complete astrometric record for 19QQ8. 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 (19QQ8) followed by the observatory code and reference code for the source of the astrometry.
2016 06 05.361655 16 15 15.726 -04 19 30.82 23.2G 19QQ8 F51 C~3THF 2016 06 05.372246 16 15 15.537 -04 19 29.84 22.6G 19QQ8 F51 C~3THF 2016 06 05.382914 16 15 15.376 -04 19 28.98 22.3G 19QQ8 F51 C~3THF 2017 05 26.499214 17 45 09.026 -00 39 44.48 22.5G 19QQ8 F51 C~3THF 2017 05 26.511269 17 45 08.846 -00 39 42.66 23.6G 19QQ8 F51 C~3THF 2017 05 26.523325 17 45 08.647 -00 39 40.93 23.3G 19QQ8 F51 C~3THF 2017 06 21.428136 17 37 32.088 +00 00 38.44 22.1G 19QQ8 F51 C~3THF 2017 06 21.440221 17 37 31.861 +00 00 38.92 22.4G 19QQ8 F51 C~3THF 2019 05 29.570464 21 31 25.594 +09 21 08.18 22.5G 19QQ8 F51 C~3CrS 2019 05 29.579842 21 31 25.681 +09 21 10.04 22.3G 19QQ8 F51 C~3CrS 2019 05 29.588795 21 31 25.750 +09 21 11.66 22.8G 19QQ8 F51 C~3CrS 2019 05 29.597760 21 31 25.813 +09 21 13.39 22.8G 19QQ8 F51 C~3CrS 2019 06 01.560945 21 31 48.565 +09 30 40.35 22.6G 19QQ8 F51 C~3CrS 2019 06 01.572278 21 31 48.653 +09 30 42.47 22.5G 19QQ8 F51 C~3CrS 2019 06 01.583620 21 31 48.703 +09 30 44.55 22.6G 19QQ8 F51 C~3CrS 2019 06 01.594977 21 31 48.781 +09 30 46.76 22.4G 19QQ8 F51 C~3CrS 2019 07 28.527998 21 26 04.041 +10 41 24.40 22.0G 19QQ8 F51 C~3CrS 2019 07 28.528745 21 26 04.035 +10 41 24.31 22.1G 19QQ8 F51 C~3CrS 2019 07 28.539454 21 26 03.847 +10 41 23.65 22.3G 19QQ8 F51 C~3CrS 2019 07 28.540200 21 26 03.840 +10 41 23.45 22.4G 19QQ8 F51 C~3CrS 2019 07 28.550856 21 26 03.665 +10 41 23.16 22.3G 19QQ8 F51 C~3CrS 2019 07 28.551613 21 26 03.661 +10 41 22.83 22.0G 19QQ8 F51 C~3CrS 2019 07 28.562269 21 26 03.479 +10 41 22.34 22.2G 19QQ8 F51 C~3CrS 2019 07 28.563028 21 26 03.465 +10 41 22.20 22.0G 19QQ8 F51 C~3CrS 2019 08 28.32331 21 17 34.793 +09 36 33.62 22.4w 19QQ8 F51 C~3CrS 2019 08 28.33429 21 17 34.618 +09 36 31.64 22.2w 19QQ8 F51 C~3CrS 2019 08 28.34525 21 17 34.447 +09 36 29.48 22.3w 19QQ8 F51 C~3CrS 2019 08 28.35630 21 17 34.271 +09 36 27.63 22.4w 19QQ8 F51 C~3CrS 2019 09 01.15323 21 16 38.08 +09 24 24.5 22.0G 19QQ8 807 C~3CrS 2019 09 01.16878 21 16 37.85 +09 24 21.4 22.1G 19QQ8 807 C~3CrS 2019 09 01.18366 21 16 37.63 +09 24 18.5 22.2G 19QQ8 807 C~3CrS 2019 09 06.36861 21 15 27.11 +09 06 47.7 22.0R 19QQ8 291 C~3CrS 2019 09 06.38792 21 15 26.87 +09 06 43.7 22.3R 19QQ8 291 C~3CrS 2019 09 06.40724 21 15 26.63 +09 06 39.9 22.1R 19QQ8 291 C~3CrS 2019 12 03.198670 21 26 10.538 +04 43 58.27 22.8G 19QQ8 568 C~3d2M 2019 12 03.201239 21 26 10.608 +04 43 58.13 22.8G 19QQ8 568 C~3d2M 2019 12 03.203808 21 26 10.681 +04 43 58.00 22.7G 19QQ8 568 C~3d2M 2020 05 20.596904 23 06 33.576 +11 15 45.16 22.6G 19QQ8 568 C~3xsR 2020 05 20.599472 23 06 33.628 +11 15 45.65 22.5G 19QQ8 568 C~3xsR 2020 05 20.602040 23 06 33.685 +11 15 46.14 22.0G 19QQ8 568 C~3xsR
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 -0.04 0.00 -0.08
2 0.0000 0.00 -0.12 0.00 0.00
3 0.0001 0.00 0.25 0.00 -0.04
4 0.9723 0.00 -0.10 0.00 -0.14
5 0.9723 0.00 0.12 0.00 0.07
6 0.9724 0.00 0.05 0.00 0.19
7 1.0433 0.00 -0.13 0.00 0.17
8 1.0433 0.00 -0.12 0.00 0.04
9 2.9794 0.00 -0.14 0.00 -0.07
10 2.9794 0.00 0.04 0.00 -0.05
11 2.9794 0.00 0.01 0.00 -0.18
12 2.9794 0.00 -0.11 0.00 -0.21
13 2.9875 0.00 0.08 0.00 -0.11
14 2.9876 0.00 0.31 0.00 -0.12
15 2.9876 0.00 -0.03 0.00 -0.16
16 2.9876 0.00 0.05 0.00 -0.08
17 3.1435 0.00 -0.00 0.00 0.07
18 3.1435 0.00 0.09 0.00 0.02
19 3.1435 0.00 -0.10 0.00 -0.01
20 3.1435 0.00 -0.02 0.00 -0.17
21 3.1436 0.00 -0.02 0.00 0.17
22 3.1436 0.00 0.10 0.00 -0.12
23 3.1436 0.00 -0.01 0.00 0.02
24 3.1436 0.00 -0.04 0.00 -0.08
25 3.2278 0.00 -0.01 0.00 0.02
26 3.2279 0.00 -0.03 0.00 0.06
27 3.2279 0.00 -0.00 0.00 -0.07
28 3.2279 0.00 -0.03 0.00 0.12
29 3.2383 0.00 -0.02 0.00 -0.03
30 3.2383 0.00 -0.01 0.00 -0.08
31 3.2384 0.00 0.00 0.00 -0.05
32 3.2526 0.00 -0.25 0.00 0.18
33 3.2526 0.00 -0.04 0.00 0.22
34 3.2527 0.00 0.15 0.00 0.47
35 3.4931 0.00 -0.02 0.00 -0.06
36 3.4931 0.00 -0.03 0.00 -0.03
37 3.4931 0.00 0.01 0.00 0.01
38 3.9568 0.00 -0.01 0.00 0.03
39 3.9568 0.00 -0.06 0.00 0.04
40 3.9569 0.00 -0.03 0.00 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.
19QQ8 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 57.872 57.870 57.874 ecceobj 0.883 0.883 0.883 incobj 23.774 23.774 23.774 qmin 6.662 -10.181 6.398 qmax 115.044 ******** 185.301 amean 47.015 948.654 65.154 amin 34.257 52.360 52.419 amax 60.873 ******** 96.014 emean 0.850 0.968 0.896 emin 0.801 0.867 0.873 emax 0.890 1.000 0.930 imean 23.874 23.287 23.732 imin 23.294 20.007 22.885 imax 24.752 27.935 24.519 excite_mean 0.942 1.046 0.982 fracstop 0.007 0.067 0.009 cjmean 1.852 0.000 1.663 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 105.8 123.7 106.6 kozaiamp 9.9 20.6 9.1