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: 230965 # Created Fri May 25 01:36:49 2018 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 48 observations of 52 # Arc: 27.35y # First observation: 1989/08/29 # Last observation: 2017/01/02 # Chi-squared of fit: 421.89 DOF: 90 RMS: 0.52 # Min/Max residuals: -1.50 1.87 # Exact a, adot, b, bdot, g, gdot: 1.572792E-05 2.830509E-02 3.711240E-06 3.570676E-03 2.616333E-02 -4.149939E-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 37.658546 46.990090 0.952575 0.202323 -0.262163 2447767.900650 # Heliocentric elements and errors Epoch: 2447768.5000 = 1989/08/30 Mean Anomaly: 328.06501 +/- 0.000 Argument of Peri: 131.45311 +/- 0.000 Long of Asc Node: 328.69433 +/- 0.000 Inclination: 38.11919 +/- 0.000 Eccentricity: 0.25113250 +/- 0.0000 Semi-Major Axis: 47.42059017 +/- 0.0000 Time of Perihelion: 2458349.1696 +/- 0.0 Perihelion: 35.51173867 +/- 0.0000 Aphelion: 59.32944167 +/- 0.0000 Period (y) 326.5567 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 21.56344739 +/- 0.0000 Ecliptic Y 21.71858207 +/- 0.0000 Ecliptic Z 23.35167665 +/- 0.0000 Ecliptic XDOT -0.00256154 +/- 0.0000 Ecliptic YDOT 0.00160339 +/- 0.0000 Ecliptic ZDOT 0.00003057 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.49660431 +/- 0.0000 Geocenter to KBO 38.22155428 +/- 0.0000 # Hcoef: 4.21
The following table shows the complete astrometric record for 230965. 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 (230965) followed by the observatory code and reference code for the source of the astrometry.
1989 08 29.40000 01 52 19.25 +52 15 40.8 230965 261 ~08dQ 1989 10 04.32639 01 48 37.60 +52 29 51.3 230965 261 ~08dQ 2004 10 18.426842 04 53 31.81 +59 54 39.1 19.8V 230965 645 C~2KIA 2004 10 18.427671 04 53 31.81 +59 54 39.2 19.5V 230965 645 C~2KIA 2004 10 18.430159 04 53 31.80 +59 54 39.2 20.6V 230965 645 C~2KIA 2004 12 12.20218 04 44 45.58 +60 04 16.1 20.8R 230965 644 Cv4437 2004 12 12.26502 04 44 44.91 +60 04 14.8 20.7R 230965 644 Cv4437 2004 12 12.34815 04 44 44.00 +60 04 13.1 20.6R 230965 644 Cv4437 2005 03 11.20266 04 37 53.10 +58 49 29.3 230965 644 Cv4437 2005 03 13.14632 04 38 01.60 +58 47 36.7 230965 644 Cv4437 2005 11 05.44191 05 06 03.13 +59 52 45.3 19.3R 230965 644 C~02dV 2005 11 05.49512 05 06 02.66 +59 52 46.7 19.3R 230965 644 C~02dV 2008 12 21.36814 05 41 50.55 +58 52 51.0 19.0r 230965 695 C~02dV 2008 12 21.42710 05 41 49.90 +58 52 50.3 19.0r 230965 695 C~02dV 2008 12 22.37490 05 41 39.59 +58 52 38.7 18.9r 230965 695 C~02dV 2008 12 31.41515 05 40 02.71 +58 49 58.8 19.5R 230965 H06 C~02dV 2009 01 01.41107 05 39 52.34 +58 49 35.8 20.1R 230965 H06 C~02dV 2009 09 26.22147 06 04 51.897 +57 37 51.92 19.7V 230965 950 C~0C7x 2009 09 26.22855 06 04 51.912 +57 37 52.27 19.7V 230965 950 C~0C7x 2009 09 26.23563 06 04 51.920 +57 37 52.59 19.8V 230965 950 C~0C7x 2009 11 20.41714 06 01 10.57 +58 15 47.1 19.3R 230965 688 C~0C7x 2009 11 20.45527 06 01 10.23 +58 15 47.9 230965 688 C~0C7x 2009 11 20.50257 06 01 09.81 +58 15 49.2 230965 688 C~0C7x 2009 12 11.37841 05 57 43.85 +58 20 48.8 18.8R 230965 850 C~0DTx 2009 12 11.40099 05 57 43.83 +58 20 49.7 19.6R 230965 850 C~0DTx 2010 01 19.09548 05 51 04.56 +58 09 58.7 18.7R 230965 850 C~0DTx 2010 01 19.13344 05 51 04.26 +58 09 56.8 19.2R 230965 850 C~0DTx 2010 01 24.20465 05 50 20.77 +58 06 40.9 19.9R 230965 926 C~0DTx 2010 01 24.25449 05 50 20.30 +58 06 38.9 19.3R 230965 926 C~0DTx 2010 01 26.30987 05 50 03.64 +58 05 14.7 18.9R 230965 850 C~0DTx 2010 01 26.33253 05 50 03.43 +58 05 14.2 19.2R 230965 850 C~0DTx 2010 01 26.35520 05 50 03.20 +58 05 13.9 19.0R 230965 850 C~0DTx 2011 03 11.13954 06 00 24.84 +56 51 42.9 19.0R 230965 688 C~0U2A 2011 03 11.20025 06 00 24.96 +56 51 39.5 230965 688 C~0U2A 2011 11 22.08310 06 27 33.06 +56 51 03.9 19.3R 230965 130 C~0bNO 2011 11 22.08678 06 27 33.02 +56 51 03.5 19.1R 230965 130 C~0bNO 2015 01 13.40200 06 55 48.003 +54 19 32.54 19.8w 230965 F51 C~1GbV 2015 01 13.41451 06 55 47.830 +54 19 32.37 19.9w 230965 F51 C~1GbV 2015 01 13.42697 06 55 47.757 +54 19 32.30 19.9w 230965 F51 C~1GbV 2015 01 13.43953 06 55 47.581 +54 19 32.13 19.8w 230965 F51 C~1GbV 2016 11 04.75013 07 26 08.61 +51 46 55.7 19.8R 230965 D29 C~221j 2016 11 04.76919 07 26 08.60 +51 46 56.1 20.2R 230965 D29 C~221j 2016 11 04.78333 07 26 08.56 +51 46 56.6 19.8R 230965 D29 C~221j 2016 12 29.66853 07 20 02.78 +52 13 39.2 19.6R 230965 D29 C~24su 2016 12 29.68267 07 20 02.67 +52 13 38.6 19.4R 230965 D29 C~24su 2016 12 29.69681 07 20 02.54 +52 13 39.2 20.3R 230965 D29 C~24su 2017 01 02.65320 07 19 25.29 +52 14 12.7 19.1R 230965 D29 C~25Mf 2017 01 02.67264 07 19 25.18 +52 14 12.7 19.3R 230965 D29 C~25Mf 2017 01 02.69209 07 19 24.97 +52 14 12.7 19.7R 230965 D29 C~25Mf 2017 12 20.46884 07 31 35.336 +51 02 16.23 19.6R 230965 G37 C~2VO9 2017 12 20.49726 07 31 35.091 +51 02 16.83 230965 G37 C~2VO9 2017 12 20.51153 07 31 34.970 +51 02 17.08 230965 G37 C~2VO9
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 -0.36 0.00 0.83 2 0.0984 0.00 0.36 0.00 -0.69 3 15.1377 0.00 -0.11 0.00 -0.50 4 15.1377 0.00 -0.02 0.00 -0.43 5 15.1377 0.00 0.07 0.00 -0.52 6 15.2876 0.00 0.23 0.00 1.26 7 15.2878 0.00 0.60 0.00 1.18 8 15.2880 0.00 0.74 0.00 1.15 9 15.5313 0.00 -0.78 0.00 -0.09 10 15.5366 0.00 ( -2.26) 0.00 ( -2.75) 11 16.1863 0.00 0.37 0.00 -0.20 12 16.1864 0.00 0.37 0.00 -0.12 13 19.3127 0.00 -0.23 0.00 -0.17 14 19.3129 0.00 -0.22 0.00 -0.14 15 19.3155 0.00 -0.21 0.00 -0.11 16 19.3402 0.00 -0.70 0.00 0.42 17 19.3429 0.00 -0.14 0.00 0.42 18 20.0762 0.00 -0.42 0.00 -0.20 19 20.0762 0.00 -0.34 0.00 -0.21 20 20.0762 0.00 -0.36 0.00 -0.24 21 20.2273 0.00 0.11 0.00 -0.26 22 20.2274 0.00 0.14 0.00 -0.38 23 20.2275 0.00 0.19 0.00 -0.22 24 20.2847 0.00 ( -1.24) 0.00 ( -2.31) 25 20.2847 0.00 ( 2.09) 0.00 ( -1.48) 26 20.3907 0.00 0.28 0.00 0.51 27 20.3908 0.00 0.95 0.00 -0.02 28 20.4047 0.00 1.23 0.00 -0.12 29 20.4048 0.00 0.45 0.00 -0.08 30 20.4104 0.00 -0.34 0.00 1.39 31 20.4105 0.00 -0.77 0.00 1.87 32 20.4106 0.00 ( -1.52) 0.00 ( 2.56) 33 21.5297 0.00 -1.50 0.00 -0.11 34 21.5299 0.00 0.57 0.00 0.19 35 22.2305 0.00 0.19 0.00 0.04 36 22.2305 0.00 0.03 0.00 -0.47 37 25.3744 0.00 0.37 0.00 -0.16 38 25.3744 0.00 -0.36 0.00 -0.20 39 25.3745 0.00 0.40 0.00 -0.14 40 25.3745 0.00 -0.37 0.00 -0.18 41 27.1851 0.00 -0.93 0.00 0.32 42 27.1851 0.00 -0.28 0.00 -0.07 43 27.1852 0.00 -0.29 0.00 -0.15 44 27.3354 0.00 -0.21 0.00 0.38 45 27.3355 0.00 0.15 0.00 -0.37 46 27.3355 0.00 0.21 0.00 0.09 47 27.3463 0.00 -0.16 0.00 -0.09 48 27.3464 0.00 0.99 0.00 -0.22 49 27.3465 0.00 0.65 0.00 -0.35 50 28.3096 0.00 0.09 0.00 -0.09 51 28.3096 0.00 0.07 0.00 -0.06 52 28.3097 0.00 0.08 0.00 -0.10
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.
230965 quality flag:2 Type: SCATNEAR SCATEXTD SCATEXTD axisobj 47.558 47.558 47.558 ecceobj 0.253 0.253 0.253 incobj 38.114 38.114 38.114 qmin 34.424 34.414 34.403 qmax 60.606 60.415 60.404 amean 47.184 47.155 47.167 amin 46.759 46.735 46.734 amax 47.725 47.656 47.671 emean 0.247 0.246 0.247 emin 0.229 0.228 0.228 emax 0.270 0.268 0.268 imean 39.260 39.275 39.271 imin 38.852 38.876 38.869 imax 39.693 39.700 39.693 excite_mean 0.680 0.679 0.679 fracstop 1.000 1.000 1.000 cjmean 2.515 2.515 2.515 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 182.0 181.0 181.3 kozaiamp 180.0 179.9 180.0