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: 99RT215
# Created Sat Apr 20 01:10:01 2024
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 62.93d
# First observation: 1999/09/07
# Last observation: 1999/11/09
Preliminary a, adot, b, bdot, g, gdot:
-0.000008 0.061809 -0.000000 -0.008453 0.030499 0.000000
# Chi-squared of fit: 3.71 DOF: 12 RMS: 0.11
# Min/Max residuals: -0.18 0.19
# Exact a, adot, b, bdot, g, gdot:
1.503788E-05 2.352694E-02 -4.941664E-06 -8.459169E-03 2.411460E-02 -2.306461E-03
# Covariance matrix:
1.1613E-12 1.8822E-09 -3.6728E-14 3.0701E-12 3.0761E-10 -2.2142E-09
1.8822E-09 4.1999E-06 -8.7533E-11 7.5292E-09 6.8404E-07 -5.4275E-06
-3.6728E-14 -8.7533E-11 2.7904E-13 -2.1495E-12 -1.4209E-11 1.2752E-10
3.0701E-12 7.5292E-09 -2.1495E-12 5.0055E-11 1.2205E-09 -1.1474E-08
3.0761E-10 6.8404E-07 -1.4209E-11 1.2205E-09 1.1142E-07 -8.7982E-07
-2.2142E-09 -5.4275E-06 1.2752E-10 -1.1474E-08 -8.7982E-07 8.2648E-06
# lat0 lon0 xBary yBary zBary JD0
0.099604 13.301644 0.486083 0.001300 -0.874974 2451429.028843
# Heliocentric elements and errors
Epoch: 2451420.5000 = 1999/08/30
Mean Anomaly: 334.96683 +/- 9.787
Argument of Peri: 216.96000 +/- 13.909
Long of Asc Node: 192.91609 +/- 0.014
Inclination: 19.73446 +/- 1.568
Eccentricity: 0.19812109 +/- 0.1818
Semi-Major Axis: 51.03729689 +/- 8.7386
Time of Perihelion: 2460681.1874 +/- 2729.7
Perihelion: 40.92573221 +/- 11.6258
Aphelion: 61.14886157 +/- 13.9884
Period (y) 364.6193 +/- 93.64
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.32696966 +/- 0.5586
Ecliptic Y 9.27175347 +/- 0.1320
Ecliptic Z 0.07189038 +/- 0.0010
Ecliptic XDOT -0.00087187 +/- 0.0004
Ecliptic YDOT 0.00254792 +/- 0.0001
Ecliptic ZDOT -0.00096080 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.35432683 +/- 0.5458
Geocenter to KBO 41.46865336 +/- 0.5740
# Hcoef: 7.17
The following table shows the complete astrometric record for 99RT215. 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 (99RT215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.52810 00 48 47.91 +05 20 34.1 22.8R 99RT215 568 Ca9937 1999 09 07.57459 00 48 47.72 +05 20 32.8 23.4R 99RT215 568 Ca9937 1999 09 07.60825 00 48 47.60 +05 20 31.9 23.0R 99RT215 568 Ca9937 1999 09 09.61089 00 48 40.13 +05 19 34.8 22.9R 99RT215 568 Ca9937 1999 09 09.62133 00 48 40.09 +05 19 34.4 23.2R 99RT215 568 Ca9937 1999 10 08.56005 00 46 39.60 +05 04 24.1 23.1R 99RT215 568 Ca9937 1999 10 08.58506 00 46 39.48 +05 04 23.1 23.3R 99RT215 568 Ca9937 1999 11 09.42248 00 44 32.08 +04 48 11.3 22.9R 99RT215 568 Ca9937 1999 11 09.46207 00 44 31.93 +04 48 09.9 23.2R 99RT215 568 Ca9937
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 0.08 0.00 -0.12
2 0.0001 -3.12 -0.12 -0.09 -0.02
3 0.0002 -5.12 -0.01 -0.23 -0.01
4 0.0057 -130.11 0.04 -9.46 0.19
5 0.0057 -130.81 0.00 -9.59 0.10
6 0.0850 -2143.18 0.11 -147.57 -0.08
7 0.0850 -2145.22 -0.10 -147.79 -0.18
8 0.1722 -4277.89 0.15 -300.28 0.18
9 0.1723 -4280.50 -0.16 -300.69 -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.
99RT215 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0