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: 17ED52 # Created Wed Jul 17 01:11:32 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 6.27y # First observation: 2016/01/15 # Last observation: 2022/04/23 # Chi-squared of fit: 10.12 DOF: 42 RMS: 0.11 # Min/Max residuals: -0.20 0.28 # Exact a, adot, b, bdot, g, gdot: 1.932101E-05 3.163474E-02 5.155859E-06 7.774066E-03 2.570415E-02 4.726946E-03 # Covariance matrix: 6.0820E-13 -6.0928E-13 1.4872E-13 -1.7911E-13 -2.3052E-15 -3.2421E-12 -6.0928E-13 7.8408E-13 -1.8579E-13 2.2252E-13 1.9838E-13 4.1913E-12 1.4872E-13 -1.8579E-13 1.9081E-13 -1.2178E-13 -2.4721E-14 -1.0824E-12 -1.7911E-13 2.2252E-13 -1.2178E-13 1.2036E-13 2.7222E-14 1.2984E-12 -2.3052E-15 1.9838E-13 -2.4721E-14 2.7222E-14 4.0563E-13 8.3137E-13 -3.2421E-12 4.1913E-12 -1.0824E-12 1.2984E-12 8.3137E-13 2.4184E-11 # lat0 lon0 xBary yBary zBary JD0 -19.114674 133.068097 0.316566 -0.304736 -0.879876 2457402.982377 # Heliocentric elements and errors Epoch: 2457402.5000 = 2016/01/15 Mean Anomaly: 3.00894 +/- 0.003 Argument of Peri: 285.00995 +/- 0.018 Long of Asc Node: 185.66001 +/- 0.001 Inclination: 22.91981 +/- 0.000 Eccentricity: 0.66474985 +/- 0.0002 Semi-Major Axis: 115.91046051 +/- 0.0583 Time of Perihelion: 2453592.7740 +/- 5.2 Perihelion: 38.85899955 +/- 0.0283 Aphelion: 192.96192147 +/- 0.0993 Period (y) 1247.9355 +/- 0.94 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -25.51060598 +/- 0.0006 Ecliptic Y 27.74864149 +/- 0.0007 Ecliptic Z -12.73941101 +/- 0.0003 Ecliptic XDOT -0.00297231 +/- 0.0000 Ecliptic YDOT -0.00176226 +/- 0.0000 Ecliptic ZDOT 0.00061754 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.78771394 +/- 0.0006 Geocenter to KBO 38.90414319 +/- 0.0010 # Hcoef: 7.91
The following table shows the complete astrometric record for 17ED52. 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 (17ED52) followed by the observatory code and reference code for the source of the astrometry.
2016 01 15.481588 08 40 47.56 -01 28 56.1 17ED52 T09 C~81Bz 2016 01 15.569219 08 40 47.15 -01 28 54.9 17ED52 T09 C~81Bz 2017 01 23.31100 08 47 34.28 -01 30 28.3 24.4r 17ED52 T09 C~7xU8 2017 01 23.31379 08 47 34.28 -01 30 28.4 24.7r 17ED52 T09 C~7xU8 2017 01 23.33550 08 47 34.16 -01 30 27.9 24.6r 17ED52 T09 C~7xU8 2017 01 23.34393 08 47 34.13 -01 30 27.6 24.4r 17ED52 T09 C~7xU8 2017 01 28.33957 08 47 10.64 -01 28 46.5 24.4g 17ED52 T09 C~7xU8 2017 01 28.34235 08 47 10.63 -01 28 46.3 24.5g 17ED52 T09 C~7xU8 2017 01 28.37257 08 47 10.48 -01 28 46.0 24.7g 17ED52 T09 C~7xU8 2017 01 30.30349 08 47 01.37 -01 28 03.0 23.3y 17ED52 T09 C~7xU8 2017 01 30.31150 08 47 01.35 -01 28 02.5 22.8y 17ED52 T09 C~7xU8 2017 01 30.34356 08 47 01.19 -01 28 01.8 23.4y 17ED52 T09 C~7xU8 2017 03 06.23483 08 44 31.08 -01 10 32.5 23.8i 17ED52 T09 C~7xU8 2017 03 06.24723 08 44 31.04 -01 10 31.8 22.9i 17ED52 T09 C~7xU8 2017 03 06.26785 08 44 30.96 -01 10 31.1 23.9i 17ED52 T09 C~7xU8 2017 03 06.28141 08 44 30.91 -01 10 30.8 23.5i 17ED52 T09 C~7xU8 2017 03 06.28412 08 44 30.91 -01 10 30.6 23.6i 17ED52 T09 C~7xU8 2017 03 06.30857 08 44 30.81 -01 10 29.8 23.5i 17ED52 T09 C~7xU8 2017 03 06.32245 08 44 30.78 -01 10 29.1 23.4i 17ED52 T09 C~7xU8 2017 03 06.33361 08 44 30.72 -01 10 28.9 23.4i 17ED52 T09 C~7xU8 2017 03 06.33932 08 44 30.70 -01 10 28.8 23.5i 17ED52 T09 C~7xU8 2017 03 06.34763 08 44 30.67 -01 10 28.4 23.7i 17ED52 T09 C~7xU8 2018 11 05.291226 09 05 09.35 -01 29 30.6 17ED52 W84 C~81Bz 2022 04 23.153698 09 18 39.91 -01 01 15.7 17ED52 W84 C~81Bz
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 0.01 0.00 -0.08
2 0.0002 0.00 -0.00 0.00 -0.10
3 1.0235 0.00 -0.06 0.00 0.20
4 1.0235 0.00 0.14 0.00 0.05
5 1.0236 0.00 -0.12 0.00 0.14
6 1.0236 0.00 0.04 0.00 0.28
7 1.0373 0.00 0.02 0.00 0.02
8 1.0373 0.00 0.06 0.00 0.16
9 1.0373 0.00 -0.01 0.00 -0.20
10 1.0426 0.00 -0.13 0.00 -0.12
11 1.0427 0.00 0.14 0.00 0.20
12 1.0427 0.00 0.04 0.00 0.17
13 1.1383 0.00 -0.04 0.00 -0.20
14 1.1383 0.00 0.03 0.00 0.06
15 1.1384 0.00 -0.06 0.00 0.03
16 1.1384 0.00 -0.07 0.00 -0.14
17 1.1384 0.00 0.08 0.00 -0.04
18 1.1385 0.00 -0.10 0.00 -0.10
19 1.1385 0.00 0.20 0.00 0.11
20 1.1385 0.00 -0.09 0.00 -0.09
21 1.1386 0.00 -0.08 0.00 -0.19
22 1.1386 0.00 -0.08 0.00 -0.08
23 2.8058 0.00 0.04 0.00 0.01
24 6.2688 0.00 0.00 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.
17ED52 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 115.749 115.749 115.750 ecceobj 0.664 0.664 0.664 incobj 22.947 22.947 22.947 qmin 37.753 37.753 37.753 qmax 195.946 195.932 196.204 amean 114.022 114.012 113.797 amin 111.715 111.776 111.410 amax 117.538 117.568 117.653 emean 0.653 0.652 0.652 emin 0.640 0.639 0.638 emax 0.669 0.669 0.669 imean 23.606 23.658 23.560 imin 22.545 22.545 22.545 imax 24.467 24.502 24.582 excite_mean 0.766 0.766 0.765 fracstop 1.000 1.000 1.000 cjmean 2.966 2.966 2.965 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 195.0 196.5 190.5 kozaiamp 180.0 180.0 180.0