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: 99RF215
# Created Wed Nov 27 02:08:00 2024
# Orbit generated from Bernstein formalism
# Fitting 8 observations of 8
# Arc: 64.94d
# First observation: 1999/09/07
# Last observation: 1999/11/11
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.024796 0.000001 0.001387 0.023672 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 2.20 DOF: 11 RMS: 0.09
# Min/Max residuals: -0.18 0.16
# Exact a, adot, b, bdot, g, gdot:
1.497674E-05 2.171812E-02 1.853343E-06 1.413245E-03 2.321909E-02 7.316332E-03
# Covariance matrix:
5.3978E-13 6.9266E-11 8.7470E-15 -6.8739E-13 9.5779E-12 -3.0207E-09
6.9266E-11 9.8460E-08 1.3518E-11 -1.0613E-09 1.1500E-08 -4.6441E-06
8.7470E-15 1.3518E-11 4.1762E-13 -3.1530E-12 1.5607E-12 -6.4435E-10
-6.8739E-13 -1.0613E-09 -3.1530E-12 5.0975E-11 -1.2254E-10 5.0584E-08
9.5779E-12 1.1500E-08 1.5607E-12 -1.2254E-10 1.3619E-09 -5.3643E-07
-3.0207E-09 -4.6441E-06 -6.4435E-10 5.0584E-08 -5.3643E-07 2.2127E-04
# lat0 lon0 xBary yBary zBary JD0
0.005664 -32.716762 -0.288446 -0.000146 -0.958532 2451428.809803
# Heliocentric elements and errors
Epoch: 2451420.5000 = 1999/08/30
Mean Anomaly: 55.53495 +/- 53.330
Argument of Peri: 266.51941 +/- 1.575
Long of Asc Node: 327.57971 +/- 0.002
Inclination: 3.72592 +/- 0.081
Eccentricity: 0.33348387 +/- 0.6654
Semi-Major Axis: 48.51452560 +/- 22.6921
Time of Perihelion: 2432380.3668 +/- 12484.1
Perihelion: 32.33571372 +/- 35.6499
Aphelion: 64.69333748 +/- 44.2470
Period (y) 337.9215 +/- 237.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.20579327 +/- 0.0576
Ecliptic Y -23.55064473 +/- 0.0370
Ecliptic Z 0.00436254 +/- 0.0000
Ecliptic XDOT 0.00210585 +/- 0.0015
Ecliptic YDOT 0.00169665 +/- 0.0010
Ecliptic ZDOT 0.00016679 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.03298694 +/- 0.0525
Geocenter to KBO 43.06801019 +/- 0.0685
# Hcoef: 7.35
The following table shows the complete astrometric record for 99RF215. 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 (99RF215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.30906 21 57 55.98 -12 24 35.3 23.2R 99RF215 568 Ca8546 1999 09 07.34237 21 57 55.83 -12 24 35.9 23.2R 99RF215 568 Ca8546 1999 09 07.37708 21 57 55.69 -12 24 36.4 23.3R 99RF215 568 Ca8546 1999 10 10.22527 21 56 00.32 -12 34 23.7 23.2R 99RF215 568 Ca8546 1999 10 10.27380 21 56 00.18 -12 34 24.2 23.8R 99RF215 568 Ca8546 1999 10 10.32240 21 56 00.05 -12 34 24.8 23.0R 99RF215 568 Ca8546 1999 11 10.26654 21 55 18.82 -12 37 38.4 24.1R 99RF215 568 Ca8546 1999 11 11.24456 21 55 18.85 -12 37 37.5 24.1R 99RF215 568 Ca8546
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 -0.04 0.00 -0.18
2 0.0001 -2.27 -0.09 0.19 -0.03
3 0.0002 -4.37 0.13 0.42 0.16
4 0.0901 -1792.98 0.08 26.04 -0.09
5 0.0903 -1795.07 -0.04 26.27 0.09
6 0.0904 -1797.07 -0.05 26.35 0.11
7 0.1751 -2430.54 0.07 49.94 -0.01
8 0.1778 -2429.82 -0.07 50.63 -0.04
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.
99RF215 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