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: 15UH67 # Created Fri Nov 22 02:10:30 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 22 observations of 22 # Arc: 2.11y # First observation: 2014/09/17 # Last observation: 2016/10/25 # Chi-squared of fit: 80.43 DOF: 38 RMS: 0.34 # Min/Max residuals: -1.13 0.55 # Exact a, adot, b, bdot, g, gdot: 3.794375E-05 4.160666E-01 1.508608E-05 1.653873E-01 1.728774E-01 -1.841153E-02 # Covariance matrix: 6.1007E-13 -5.2824E-13 9.6472E-14 -1.6054E-13 1.5599E-13 -3.2185E-13 -5.2824E-13 4.7640E-13 -8.0464E-14 1.3363E-13 -1.1278E-13 2.6901E-13 9.6472E-14 -8.0464E-14 2.7498E-13 -2.5874E-13 5.0200E-14 -8.9774E-14 -1.6054E-13 1.3363E-13 -2.5874E-13 2.6951E-13 -8.4234E-14 1.4972E-13 1.5599E-13 -1.1278E-13 5.0200E-14 -8.4234E-14 1.2606E-13 -1.6603E-13 -3.2185E-13 2.6901E-13 -8.9774E-14 1.4972E-13 -1.6603E-13 2.9883E-13 # lat0 lon0 xBary yBary zBary JD0 -20.600109 4.276177 0.180619 -0.348694 -0.928078 2456917.685975 # Heliocentric elements and errors Epoch: 2456918.5000 = 2014/09/18 Mean Anomaly: 344.54792 +/- 0.020 Argument of Peri: 339.90796 +/- 0.000 Long of Asc Node: 40.50516 +/- 0.000 Inclination: 27.38343 +/- 0.000 Eccentricity: 0.15012717 +/- 0.0000 Semi-Major Axis: 7.84006418 +/- 0.0000 Time of Perihelion: 2457262.6616 +/- 0.4 Perihelion: 6.66305752 +/- 0.0001 Aphelion: 9.01707084 +/- 0.0001 Period (y) 21.9527 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.39927131 +/- 0.0000 Ecliptic Y 0.29913647 +/- 0.0000 Ecliptic Z -2.03515141 +/- 0.0000 Ecliptic XDOT 0.00015079 +/- 0.0000 Ecliptic YDOT 0.00661472 +/- 0.0000 Ecliptic ZDOT 0.00255446 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 6.72176646 +/- 0.0000 Geocenter to KBO 5.78449298 +/- 0.0000 # Hcoef: 13.35
The following table shows the complete astrometric record for 15UH67. 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 (15UH67) followed by the observatory code and reference code for the source of the astrometry.
2014 09 17.185197 00 49 18.56 -17 09 37.2 15UH67 W84 C~3xrk 2014 09 17.260718 00 49 16.63 -17 09 44.8 15UH67 W84 C~3xrk 2015 09 04.320637 02 03 37.10 +01 56 49.7 21.4i 15UH67 W84 C~3xrk 2015 09 04.322899 02 03 37.09 +01 56 49.4 15UH67 W84 C~3xrk 2015 10 19.39280 01 47 18.355 +01 25 02.54 21.6w 15UH67 F51 C~1bSZ 2015 10 19.40422 01 47 18.026 +01 25 02.53 21.9w 15UH67 F51 C~1bSZ 2015 10 19.41572 01 47 17.690 +01 25 02.13 21.7w 15UH67 F51 C~1bSZ 2015 10 22.34051 01 45 57.56 +01 23 31.8 15UH67 291 C~1bSZ 2015 10 22.35366 01 45 57.17 +01 23 32.6 15UH67 291 C~1bSZ 2015 10 22.36683 01 45 56.78 +01 23 32.0 15UH67 291 C~1bSZ 2015 10 23.15451 01 45 35.29 +01 23 11.2 15UH67 291 C~1bSZ 2015 10 23.16683 01 45 34.96 +01 23 10.1 21.6R 15UH67 291 C~1bSZ 2015 10 23.17919 01 45 34.66 +01 23 10.7 21.6R 15UH67 291 C~1bSZ 2015 12 28.086806 01 26 52.17 +02 35 37.6 21.4i 15UH67 W84 C~3xrk 2015 12 28.140197 01 26 52.15 +02 35 46.6 21.3i 15UH67 W84 C~3xrk 2015 12 28.140868 01 26 52.14 +02 35 46.8 15UH67 W84 C~3xrk 2016 09 07.463665 03 12 14.40 +19 20 52.5 15UH67 568 C~3xrk 2016 09 07.509638 03 12 14.17 +19 20 57.5 21.6i 15UH67 568 C~3xrk 2016 10 25.51000 02 57 58.269 +20 07 01.84 21.5w 15UH67 F51 C~3xrk 2016 10 25.52399 02 57 57.870 +20 07 01.73 21.6w 15UH67 F51 C~3xrk 2016 10 25.53790 02 57 57.464 +20 07 01.94 21.5w 15UH67 F51 C~3xrk 2016 10 25.55194 02 57 57.070 +20 07 01.99 21.6w 15UH67 F51 C~3xrk
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 0.02
2 0.0002 0.00 0.05 0.00 -0.06
3 0.9641 0.00 0.27 0.00 0.35
4 0.9641 0.00 0.55 0.00 0.11
5 1.0875 0.00 0.16 0.00 0.16
6 1.0875 0.00 0.02 0.00 0.52
7 1.0876 0.00 -0.19 0.00 0.49
8 1.0956 0.00 0.30 0.00 -1.13
9 1.0956 0.00 -0.04 0.00 0.04
10 1.0956 0.00 -0.38 0.00 -0.20
11 1.0978 0.00 -0.66 0.00 0.24
12 1.0978 0.00 -0.48 0.00 -0.54
13 1.0979 0.00 0.17 0.00 0.38
14 1.2783 0.00 0.01 0.00 -0.13
15 1.2785 0.00 0.26 0.00 -0.18
16 1.2785 0.00 0.11 0.00 -0.09
17 1.9748 0.00 -0.53 0.00 -0.14
18 1.9749 0.00 -0.52 0.00 -0.09
19 2.1063 0.00 0.30 0.00 0.26
20 2.1063 0.00 0.30 0.00 -0.00
21 2.1064 0.00 0.16 0.00 0.06
22 2.1064 0.00 0.25 0.00 -0.03
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.
15UH67 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 7.849 7.849 7.849 ecceobj 0.151 0.151 0.151 incobj 27.385 27.385 27.385 qmin 5.500 5.921 4.530 qmax 10.231 9.394 10.937 amean 7.613 7.577 7.581 amin 7.067 7.248 7.199 amax 8.467 8.038 7.981 emean 0.188 0.137 0.245 emin 0.096 0.038 0.151 emax 0.273 0.226 0.414 imean 26.502 25.340 26.634 imin 25.639 23.779 24.494 imax 27.255 26.997 27.939 excite_mean 0.486 0.451 0.514 fracstop 0.002 0.007 0.002 cjmean 4.848 4.873 4.842 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 141.1 164.9 176.1 kozaiamp 167.2 173.8 167.2