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: 508770 # Created Wed Dec 25 02:07:11 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 21.36y # First observation: 1995/11/18 # Last observation: 2017/03/29 # Chi-squared of fit: 177.23 DOF: 42 RMS: 0.48 # Min/Max residuals: -1.45 1.15 # Exact a, adot, b, bdot, g, gdot: 1.562232E-05 1.900504E-02 7.351935E-06 5.456794E-04 2.134607E-02 -2.224868E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -0.006267 79.006222 0.384742 -0.000173 -0.915282 2450040.078708 # Heliocentric elements and errors Epoch: 2450040.5000 = 1995/11/19 Mean Anomaly: 262.14157 +/- 0.000 Argument of Peri: 111.71226 +/- 0.000 Long of Asc Node: 78.73909 +/- 0.000 Inclination: 1.64642 +/- 0.000 Eccentricity: 0.12776914 +/- 0.0000 Semi-Major Axis: 46.23490481 +/- 0.0000 Time of Perihelion: 2481254.4792 +/- 0.0 Perihelion: 40.32751064 +/- 0.0000 Aphelion: 52.14229898 +/- 0.0000 Period (y) 314.3860 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 9.48863983 +/- 0.0000 Ecliptic Y 46.80507546 +/- 0.0000 Ecliptic Z -0.00477169 +/- 0.0000 Ecliptic XDOT -0.00243981 +/- 0.0000 Ecliptic YDOT 0.00018610 +/- 0.0000 Ecliptic ZDOT 0.00006982 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.75727370 +/- 0.0000 Geocenter to KBO 46.84714609 +/- 0.0000 # Hcoef: 7.15
The following table shows the complete astrometric record for 508770. 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 (508770) followed by the observatory code and reference code for the source of the astrometry.
1995 11 18.5780 05 12 10.88 +22 58 40.6 23.4R 508770 568 C26040 1995 11 18.5903 05 12 10.82 +22 58 40.6 508770 568 C26040 1995 11 18.6026 05 12 10.76 +22 58 40.6 508770 568 C26040 1995 11 19.4540 05 12 07.11 +22 58 38.0 508770 568 C26040 1995 11 19.4630 05 12 07.07 +22 58 38.3 508770 568 C26040 1995 11 19.4943 05 12 06.90 +22 58 37.6 508770 568 C26040 1995 11 27.4811 05 11 30.91 +22 57 59.1 508770 568 C26040 1995 11 27.5080 05 11 30.78 +22 57 58.7 508770 568 C26040 1995 11 27.5289 05 11 30.69 +22 57 58.6 508770 568 C26040 1995 12 23.38840 05 09 28.23 +22 55 41.9 508770 568 C26491 1995 12 23.49021 05 09 27.76 +22 55 41.2 508770 568 C26491 1996 09 12.5725 05 19 10.46 +23 07 37.5 24. R 508770 568 C27786 1996 09 13.5467 05 19 11.11 +23 07 39.0 508770 568 C27786 1997 02 10.13579 05 11 15.96 +22 59 56.6 508770 697 C29272 1997 02 10.18933 05 11 15.89 +22 59 56.3 508770 697 C29272 1997 09 05.51484 05 23 41.22 +23 13 35.2 508770 675 Ca0008 1997 09 06.52043 05 23 42.67 +23 13 37.0 508770 675 Ca0008 1997 09 07.50109 05 23 44.01 +23 13 38.9 23.8R 508770 675 Ca0008 2000 12 28.33316 05 32 54.51 +23 26 56.9 23.7R 508770 568 Cl2494 2000 12 28.39865 05 32 54.19 +23 26 56.8 23.3R 508770 568 C52847 2015 02 18.14772 06 39 57.70 +23 43 51.5 23.5R 508770 695 C~1M5z 2015 02 18.19455 06 39 57.56 +23 43 51.7 508770 695 C~1M5z 2017 03 24.24519 06 49 27.166 +23 37 20.46 23.9w 508770 568 C~2WWx 2017 03 29.25484 06 49 28.286 +23 37 15.98 23.9w 508770 568 C~2WWx
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 -0.22 0.00 -1.45
2 0.0000 0.00 -0.30 0.00 -1.39
3 0.0001 0.00 -0.39 0.00 -1.33
4 0.0024 0.00 0.33 0.00 0.03
5 0.0024 0.00 0.33 0.00 0.37
6 0.0025 0.00 -0.13 0.00 -0.19
7 0.0244 0.00 0.07 0.00 0.27
8 0.0244 0.00 0.01 0.00 0.01
9 0.0245 0.00 0.14 0.00 0.02
10 0.0953 0.00 0.00 0.00 0.08
11 0.0956 0.00 0.17 0.00 -0.07
12 0.8186 0.00 -0.09 0.00 0.46
13 0.8213 0.00 -0.32 0.00 0.99
14 1.2308 0.00 -0.08 0.00 -0.05
15 1.2310 0.00 0.38 0.00 -0.25
16 1.7986 0.00 0.18 0.00 0.59
17 1.8013 0.00 0.13 0.00 0.76
18 1.8040 0.00 0.27 0.00 1.15
19 5.1109 0.00 -0.08 0.00 0.18
20 5.1111 0.00 -0.17 0.00 0.26
21 19.2514 0.00 -0.18 0.00 -0.10
22 19.2515 0.00 -0.15 0.00 -0.02
23 21.3461 0.00 0.09 0.00 -0.06
24 21.3598 0.00 0.16 0.00 -0.18
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.
508770 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.712 46.712 46.713 ecceobj 0.124 0.124 0.124 incobj 1.644 1.644 1.644 qmin 39.899 39.914 39.906 qmax 53.467 53.532 53.488 amean 46.518 46.517 46.518 amin 46.126 46.118 46.123 amax 46.965 46.965 46.946 emean 0.125 0.125 0.125 emin 0.112 0.113 0.112 emax 0.139 0.140 0.140 imean 0.589 0.589 0.589 imin 0.044 0.044 0.040 imax 0.990 0.990 0.991 excite_mean 0.126 0.126 0.126 fracstop 1.000 1.000 1.000 cjmean 3.113 3.113 3.113 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 181.0 180.9 180.9 kozaiamp 179.9 179.9 180.0