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: 500886 # Created Sun Dec 22 02:07:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 42 observations of 42 # Arc: 18.12y # First observation: 1999/03/21 # Last observation: 2017/05/02 # Chi-squared of fit: 12.44 DOF: 78 RMS: 0.10 # Min/Max residuals: -0.22 0.30 # Exact a, adot, b, bdot, g, gdot: 1.498855E-05 2.338037E-02 -4.066388E-06 -6.063977E-03 2.478101E-02 4.318866E-04 # 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 13.843943 -141.791151 0.616036 0.189546 -0.770213 2451258.908973 # Heliocentric elements and errors Epoch: 2451258.5000 = 1999/03/21 Mean Anomaly: 168.21222 +/- 0.000 Argument of Peri: 327.14924 +/- 0.000 Long of Asc Node: 79.87256 +/- 0.000 Inclination: 19.66091 +/- 0.000 Eccentricity: 0.01656520 +/- 0.0000 Semi-Major Axis: 40.46545503 +/- 0.0000 Time of Perihelion: 2407326.5883 +/- 0.0 Perihelion: 39.79513649 +/- 0.0000 Aphelion: 41.13577357 +/- 0.0000 Period (y) 257.4156 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.78285943 +/- 0.0000 Ecliptic Y -24.24141286 +/- 0.0000 Ecliptic Z 9.65558373 +/- 0.0000 Ecliptic XDOT 0.00143321 +/- 0.0000 Ecliptic YDOT -0.00214865 +/- 0.0000 Ecliptic ZDOT -0.00063907 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.12209113 +/- 0.0000 Geocenter to KBO 40.35350255 +/- 0.0000 # Hcoef: 7.36
The following table shows the complete astrometric record for 500886. 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 (500886) followed by the observatory code and reference code for the source of the astrometry.
1999 03 21.408230 14 41 03.27 -01 06 32.8 23.5V 500886 645 C~2glL 1999 03 21.409059 14 41 03.27 -01 06 32.8 500886 645 C~2glL 1999 03 21.411547 14 41 03.26 -01 06 32.8 500886 645 C~2glL 2013 04 09.53553 15 46 00.077 -11 15 36.77 23.5r 500886 568 C~1XRg 2013 04 10.50462 15 45 56.496 -11 15 21.25 23.5r 500886 568 C~1XRg 2013 04 10.54490 15 45 56.339 -11 15 20.47 23.3r 500886 568 C~1XRg 2013 04 19.55776 15 45 20.334 -11 12 54.93 23.2r 500886 568 C~1XRg 2013 05 04.43329 15 44 12.678 -11 09 01.75 23.4r 500886 568 C~1XRg 2013 05 04.43834 15 44 12.651 -11 09 01.50 23.3r 500886 568 C~1XRg 2013 05 04.44379 15 44 12.618 -11 09 01.27 23.1r 500886 568 C~1XRg 2013 05 07.43599 15 43 58.134 -11 08 17.33 23.8r 500886 568 C~1XRg 2013 05 07.48020 15 43 57.917 -11 08 16.71 23.5r 500886 568 C~1XRg 2013 05 07.52039 15 43 57.719 -11 08 16.15 23.0r 500886 568 C~1XRg 2013 05 09.48057 15 43 48.127 -11 07 47.88 23.4r 500886 568 C~1XRg 2013 05 10.48774 15 43 43.176 -11 07 33.75 23.2r 500886 568 C~1XRg 2014 02 24.64166 15 52 08.973 -12 06 45.48 500886 568 C~1XRg 2014 02 28.61823 15 52 09.378 -12 06 15.58 500886 568 C~1XRg 2014 03 06.54583 15 52 07.054 -12 05 22.70 23.5r 500886 568 C~1XRg 2014 04 04.53015 15 51 08.606 -11 59 15.71 23.6r 500886 568 C~1XRg 2014 04 04.54871 15 51 08.538 -11 59 15.67 23.7r 500886 568 C~1XRg 2014 04 30.40127 15 49 24.501 -11 52 43.24 23.2r 500886 568 C~1XRg 2014 04 30.45279 15 49 24.254 -11 52 42.52 23.5r 500886 568 C~1XRg 2014 04 30.50453 15 49 24.009 -11 52 41.82 23.5r 500886 568 C~1XRg 2014 05 05.45427 15 49 00.558 -11 51 29.51 23.5r 500886 568 C~1XRg 2014 05 06.39610 15 48 56.020 -11 51 16.17 23.4r 500886 568 C~1XRg 2014 05 06.46297 15 48 55.692 -11 51 15.23 23.3r 500886 568 C~1XRg 2014 05 06.53903 15 48 55.319 -11 51 14.18 23.6r 500886 568 C~1XRg 2014 05 22.48181 15 47 36.339 -11 47 47.79 23.5r 500886 568 C~1XRg 2014 05 24.46324 15 47 26.448 -11 47 25.42 23.3r 500886 568 C~1XRg 2016 04 03.57091 16 00 55.942 -13 22 54.02 23.7w 500886 568 C~2LSW 2016 04 08.62047 16 00 39.639 -13 21 48.26 23.7w 500886 568 C~2LSW 2016 04 09.56441 16 00 36.393 -13 21 35.74 23.7w 500886 568 C~2LSW 2016 04 29.51761 15 59 14.995 -13 17 04.89 23.8w 500886 568 C~2LSW 2016 05 04.49023 15 58 51.750 -13 15 58.60 23.8w 500886 568 C~2LSW 2016 05 06.46079 15 58 42.301 -13 15 32.77 23.2r 500886 568 C~2LSW 2016 05 06.52677 15 58 41.978 -13 15 31.90 23.4r 500886 568 C~2LSW 2016 05 30.43368 15 56 42.847 -13 11 01.65 23.8w 500886 568 C~2LSW 2017 01 31.65347 16 05 54.459 -14 09 38.94 23.8w 500886 568 C~2LSW 2017 02 03.64979 16 06 03.035 -14 09 47.56 500886 568 C~2LSW 2017 03 30.59606 16 06 03.553 -14 04 55.66 23.7w 500886 568 C~2LSW 2017 05 02.35502 16 04 00.45 -13 58 08.0 23.4R 500886 G37 C~2Fa2 2017 05 02.42034 16 04 00.16 -13 58 07.3 500886 G37 C~2Fa2
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 -0.00 0.00 0.04
2 0.0000 0.00 0.04 0.00 0.02
3 0.0000 0.00 0.02 0.00 -0.05
4 14.0537 0.00 -0.01 0.00 0.00
5 14.0564 0.00 -0.05 0.00 -0.06
6 14.0565 0.00 -0.10 0.00 0.07
7 14.0812 0.00 -0.06 0.00 -0.07
8 14.1219 0.00 0.13 0.00 -0.02
9 14.1219 0.00 0.09 0.00 0.15
10 14.1219 0.00 -0.00 0.00 0.30
11 14.1301 0.00 -0.09 0.00 0.04
12 14.1302 0.00 -0.06 0.00 0.02
13 14.1304 0.00 -0.04 0.00 -0.01
14 14.1357 0.00 -0.11 0.00 0.04
15 14.1385 0.00 -0.06 0.00 -0.10
16 14.9329 0.00 0.05 0.00 0.15
17 14.9438 0.00 -0.01 0.00 0.08
18 14.9600 0.00 0.06 0.00 0.02
19 15.0393 0.00 -0.02 0.00 0.11
20 15.0394 0.00 -0.12 0.00 -0.12
21 15.1102 0.00 0.15 0.00 -0.02
22 15.1103 0.00 0.10 0.00 -0.06
23 15.1105 0.00 0.11 0.00 -0.12
24 15.1240 0.00 0.09 0.00 0.00
25 15.1266 0.00 0.06 0.00 -0.10
26 15.1268 0.00 0.07 0.00 -0.10
27 15.1270 0.00 0.09 0.00 -0.14
28 15.1706 0.00 -0.13 0.00 -0.17
29 15.1761 0.00 -0.05 0.00 -0.09
30 17.0381 0.00 0.05 0.00 -0.07
31 17.0519 0.00 -0.02 0.00 -0.03
32 17.0545 0.00 0.02 0.00 -0.03
33 17.1091 0.00 0.09 0.00 -0.14
34 17.1227 0.00 0.06 0.00 -0.07
35 17.1281 0.00 -0.10 0.00 0.02
36 17.1283 0.00 -0.08 0.00 0.03
37 17.1938 0.00 -0.01 0.00 -0.11
38 17.8679 0.00 0.18 0.00 0.03
39 17.8761 0.00 -0.03 0.00 0.12
40 18.0265 0.00 -0.04 0.00 0.01
41 18.1162 0.00 -0.22 0.00 0.29
42 18.1164 0.00 0.07 0.00 0.17
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.
500886 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.447 40.447 40.447 ecceobj 0.017 0.017 0.017 incobj 19.675 19.675 19.675 qmin 39.449 39.449 39.449 qmax 42.111 42.112 42.111 amean 40.726 40.726 40.726 amin 40.422 40.422 40.422 amax 41.042 41.042 41.042 emean 0.015 0.015 0.015 emin 0.003 0.003 0.003 emax 0.027 0.027 0.027 imean 17.865 17.865 17.865 imin 17.165 17.165 17.165 imax 18.549 18.549 18.549 excite_mean 0.307 0.307 0.307 fracstop 1.000 1.000 1.000 cjmean 2.953 2.953 2.953 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 174.4 174.4 174.4 kozaiamp 180.0 180.0 180.0