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: 99RX215 # Created Sat Apr 20 01:10:02 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 22 observations of 22 # Arc: 22.97y # First observation: 1999/09/08 # Last observation: 2022/08/27 # Chi-squared of fit: 35.28 DOF: 38 RMS: 0.22 # Min/Max residuals: -0.35 0.43 # Exact a, adot, b, bdot, g, gdot: 1.556884E-05 2.553074E-02 9.402631E-07 -2.897003E-04 2.474098E-02 1.731599E-03 # Covariance matrix: 1.5929E-13 -2.7265E-14 -4.3634E-16 2.3107E-16 1.6342E-14 -3.4078E-14 -2.7265E-14 1.4908E-14 2.3524E-16 -1.6226E-16 4.7468E-14 2.3905E-14 -4.3634E-16 2.3524E-16 1.2093E-13 -6.9121E-15 -1.2104E-16 3.9424E-16 2.3107E-16 -1.6226E-16 -6.9121E-15 8.3824E-16 -5.8211E-16 -2.7585E-16 1.6342E-14 4.7468E-14 -1.2104E-16 -5.8211E-16 9.6958E-13 8.5411E-14 -3.4078E-14 2.3905E-14 3.9424E-16 -2.7585E-16 8.5411E-14 4.0637E-14 # lat0 lon0 xBary yBary zBary JD0 -0.629514 -37.646232 -0.385223 -0.010388 -0.923507 2451429.796453 # Heliocentric elements and errors Epoch: 2451430.5000 = 1999/09/09 Mean Anomaly: 26.57436 +/- 0.021 Argument of Peri: 188.33970 +/- 0.028 Long of Asc Node: 99.26251 +/- 0.004 Inclination: 0.89158 +/- 0.000 Eccentricity: 0.14367001 +/- 0.0001 Semi-Major Axis: 47.17120645 +/- 0.0088 Time of Perihelion: 2442695.2715 +/- 7.5 Perihelion: 40.39411876 +/- 0.0091 Aphelion: 53.94829413 +/- 0.0112 Period (y) 323.9841 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.97617014 +/- 0.0013 Ecliptic Y -24.94235572 +/- 0.0010 Ecliptic Z -0.44401327 +/- 0.0000 Ecliptic XDOT 0.00187296 +/- 0.0000 Ecliptic YDOT 0.00212852 +/- 0.0000 Ecliptic ZDOT -0.00003410 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.34902672 +/- 0.0012 Geocenter to KBO 40.41876449 +/- 0.0016 # Hcoef: 7.43
The following table shows the complete astrometric record for 99RX215. 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 (99RX215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 08.29571 21 39 41.48 -14 39 23.0 23.7R 99RX215 568 Ca9937 1999 09 08.34809 21 39 41.22 -14 39 24.2 23.3R 99RX215 568 Ca9937 1999 09 08.40068 21 39 41.01 -14 39 25.4 23.4R 99RX215 568 Ca9937 1999 09 10.30523 21 39 32.98 -14 40 04.9 23.6R 99RX215 568 Ca9937 1999 09 10.31684 21 39 32.95 -14 40 05.3 23.6R 99RX215 568 Ca9937 1999 10 08.31941 21 37 57.64 -14 47 46.6 23.4R 99RX215 568 Ca9937 1999 10 10.23744 21 37 53.09 -14 48 07.9 23.6R 99RX215 568 Ca9937 1999 10 10.28640 21 37 52.97 -14 48 08.4 23.2R 99RX215 568 Ca9937 2003 08 24.19583 22 03 24.68 -12 39 41.4 22.1R 99RX215 807 Ci3203 2003 08 25.20668 22 03 20.02 -12 40 07.0 99RX215 807 Ci3203 2003 08 25.31108 22 03 19.53 -12 40 09.6 99RX215 807 Ci3203 2004 09 11.07609 22 07 32.58 -12 18 02.5 22.9R 99RX215 304 Cl4067 2004 09 11.07917 22 07 32.56 -12 18 02.7 99RX215 304 Cl4067 2004 09 11.11898 22 07 32.38 -12 18 03.5 99RX215 304 Cl4067 2004 09 11.12205 22 07 32.36 -12 18 03.7 99RX215 304 Cl4067 2014 10 22.14534 22 58 01.27 -07 29 33.6 23.5R 99RX215 G37 C~1Bx9 2014 10 22.25273 22 58 01.00 -07 29 35.3 99RX215 G37 C~1Bx9 2017 09 17.152986 23 15 15.60 -05 43 43.3 99RX215 W84 C~3i92 2017 09 17.154028 23 15 15.59 -05 43 43.3 99RX215 W84 C~3i92 2022 08 27.369250 23 41 14.990 -02 59 14.44 23.5G 99RX215 G37 C~5nDp 2022 08 27.402300 23 41 14.855 -02 59 15.21 99RX215 G37 C~5nDp 2022 08 27.437000 23 41 14.722 -02 59 16.18 99RX215 G37 C~5nDp
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 0.23 0.00 -0.17
2 0.0001 0.00 -0.26 0.00 -0.26
3 0.0003 0.00 0.03 0.00 -0.35
4 0.0055 0.00 0.07 0.00 -0.18
5 0.0055 0.00 0.36 0.00 -0.34
6 0.0822 0.00 0.10 0.00 -0.26
7 0.0875 0.00 0.06 0.00 -0.20
8 0.0876 0.00 0.01 0.00 -0.17
9 3.9587 0.00 -0.14 0.00 0.42
10 3.9614 0.00 -0.09 0.00 0.18
11 3.9617 0.00 -0.11 0.00 0.19
12 5.0097 0.00 0.04 0.00 0.43
13 5.0097 0.00 -0.06 0.00 0.30
14 5.0098 0.00 -0.15 0.00 0.43
15 5.0098 0.00 -0.24 0.00 0.30
16 15.1207 0.00 -0.33 0.00 0.19
17 15.1210 0.00 0.26 0.00 0.25
18 18.0256 0.00 0.01 0.00 -0.14
19 18.0256 0.00 -0.07 0.00 -0.11
20 22.9680 0.00 0.10 0.00 -0.23
21 22.9681 0.00 0.05 0.00 -0.14
22 22.9682 0.00 0.14 0.00 -0.22
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.
99RX215 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 47.106 47.106 47.106 ecceobj 0.143 0.143 0.143 incobj 0.891 0.891 0.891 qmin 39.718 39.756 39.742 qmax 54.558 54.619 54.627 amean 46.992 46.991 46.991 amin 46.588 46.587 46.588 amax 47.443 47.449 47.463 emean 0.137 0.137 0.137 emin 0.123 0.123 0.123 emax 0.150 0.151 0.151 imean 0.938 0.937 0.938 imin 0.454 0.454 0.454 imax 1.314 1.313 1.313 excite_mean 0.138 0.138 0.138 fracstop 1.000 1.000 1.000 cjmean 3.115 3.115 3.115 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 176.5 176.7 176.7 kozaiamp 180.0 180.0 179.9