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: 99RR215 # Created Wed Nov 27 02:08:00 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 14 # Arc: 1.31y # First observation: 1999/09/07 # Last observation: 2000/12/28 Preliminary a, adot, b, bdot, g, gdot: -0.000010 0.025967 0.000000 -0.000521 0.025252 0.000000 # Chi-squared of fit: 10.26 DOF: 20 RMS: 0.16 # Min/Max residuals: -0.30 0.33 # Exact a, adot, b, bdot, g, gdot: 1.715395E-05 2.595471E-02 4.037951E-07 -5.329329E-04 2.528998E-02 2.593633E-03 # Covariance matrix: 2.9365E-13 4.4282E-13 6.6518E-15 -1.3146E-13 1.0681E-12 1.9825E-10 4.4282E-13 2.9935E-12 3.4293E-14 -6.7831E-13 4.9156E-12 1.0246E-09 6.6518E-15 3.4293E-14 1.4854E-13 -1.5655E-13 9.7647E-14 2.6473E-11 -1.3146E-13 -6.7831E-13 -1.5655E-13 9.1581E-13 -1.9334E-12 -5.2448E-10 1.0681E-12 4.9156E-12 9.7647E-14 -1.9334E-12 1.1959E-11 2.9261E-09 1.9825E-10 1.0246E-09 2.6473E-11 -5.2448E-10 2.9261E-09 7.9464E-07 # lat0 lon0 xBary yBary zBary JD0 -0.121992 12.347450 0.471496 -0.002101 -0.882920 2451429.025523 # Heliocentric elements and errors Epoch: 2451420.5000 = 1999/08/30 Mean Anomaly: 36.75360 +/- 7.507 Argument of Peri: 138.86656 +/- 11.054 Long of Asc Node: 185.86964 +/- 0.010 Inclination: 1.17781 +/- 0.002 Eccentricity: 0.12970452 +/- 0.0276 Semi-Major Axis: 44.76852132 +/- 0.3424 Time of Perihelion: 2440250.4546 +/- 2277.9 Perihelion: 38.96184165 +/- 1.2696 Aphelion: 50.57520099 +/- 1.2934 Period (y) 299.5486 +/- 3.44 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 39.59749315 +/- 0.0053 Ecliptic Y 8.18623823 +/- 0.0011 Ecliptic Z -0.08416811 +/- 0.0000 Ecliptic XDOT -0.00033077 +/- 0.0001 Ecliptic YDOT 0.00281316 +/- 0.0000 Ecliptic ZDOT -0.00005823 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.43492357 +/- 0.0052 Geocenter to KBO 39.54134772 +/- 0.0054 # Hcoef: 8.09
The following table shows the complete astrometric record for 99RR215. 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 (99RR215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.52478 00 45 36.94 +04 46 01.8 24.3R 99RR215 568 Ca9937 1999 09 07.57141 00 45 36.76 +04 46 00.5 23.9R 99RR215 568 Ca9937 1999 09 07.60494 00 45 36.63 +04 45 59.9 23.2R 99RR215 568 Ca9937 1999 09 11.53204 00 45 20.68 +04 44 17.5 23.9R 99RR215 568 Ca9937 1999 09 11.54363 00 45 20.64 +04 44 17.1 23.9R 99RR215 568 Ca9937 1999 09 11.55524 00 45 20.60 +04 44 16.7 24.0R 99RR215 568 Ca9937 1999 10 10.43212 00 43 11.05 +04 30 25.4 24.0R 99RR215 568 Ca9937 1999 10 10.48288 00 43 10.82 +04 30 24.4 23.9R 99RR215 568 Ca9937 1999 10 11.46025 00 43 06.29 +04 29 54.7 23.6R 99RR215 568 Ca9937 1999 10 11.51034 00 43 06.06 +04 29 53.4 24.1R 99RR215 568 Ca9937 1999 11 11.37721 00 40 57.87 +04 16 11.3 23.5R 99RR215 568 Ca9937 1999 11 11.42766 00 40 57.70 +04 16 10.0 23.2R 99RR215 568 Ca9937 2000 12 27.25825 00 45 07.317 +04 40 31.51 24.0R 99RR215 568 Cl2529 2000 12 28.26167 00 45 07.652 +04 40 33.55 24.0R 99RR215 568 Cl2529
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 -0.19 0.00 -0.15
2 0.0001 -2.98 -0.11 -0.15 -0.30
3 0.0002 -5.01 0.07 0.06 -0.10
4 0.0110 -264.49 0.01 -1.26 0.10
5 0.0110 -265.20 0.10 -1.39 -0.04
6 0.0110 -265.90 0.19 -1.53 -0.17
7 0.0901 -2373.77 0.31 -10.76 0.16
8 0.0902 -2377.33 ( 0.61) -10.33 ( 0.58)
9 0.0929 -2451.30 -0.28 -11.20 -0.01
10 0.0930 -2454.97 -0.16 -11.06 0.13
11 0.1776 -4541.63 0.00 -17.91 0.33
12 0.1777 -4544.48 0.05 -18.12 0.12
13 1.3052 -536.59 -0.01 -131.43 -0.03
14 1.3080 -531.18 0.01 -131.50 -0.06
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.
99RR215 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.738 46.382 44.278 ecceobj 0.129 0.225 0.087 incobj 1.177 1.180 1.174 qmin 37.996 33.636 39.359 qmax 51.055 59.297 48.753 amean 44.407 45.842 43.933 amin 44.042 44.925 43.577 amax 44.815 47.140 44.309 emean 0.125 0.230 0.084 emin 0.106 0.204 0.066 emax 0.141 0.260 0.101 imean 2.826 5.208 2.468 imin 1.767 1.768 1.644 imax 3.702 7.808 3.171 excite_mean 0.134 0.248 0.095 fracstop 1.000 1.000 1.000 cjmean 3.084 3.047 3.090 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 183.5 177.2 189.2 kozaiamp 180.0 180.0 180.0