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: 99RZ214
# Created Wed Dec 25 02:07:59 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 17 observations of 17
# Arc: 18.04y
# First observation: 1999/09/06
# Last observation: 2017/09/22
# Chi-squared of fit: 27.69 DOF: 28 RMS: 0.23
# Min/Max residuals: -0.53 0.53
# Exact a, adot, b, bdot, g, gdot:
1.853878E-05 2.882717E-02 -6.890302E-06 -9.778001E-03 2.558506E-02 7.944983E-03
# Covariance matrix:
2.5825E-13 2.6413E-14 1.1908E-14 -1.1844E-14 2.4673E-13 7.3565E-14
2.6413E-14 1.0402E-13 2.4173E-14 -3.5374E-14 1.6260E-13 2.2291E-13
1.1908E-14 2.4173E-14 1.3310E-13 -1.6796E-14 4.4366E-14 5.2686E-14
-1.1844E-14 -3.5374E-14 -1.6796E-14 1.4149E-14 -5.5959E-14 -7.7215E-14
2.4673E-13 1.6260E-13 4.4366E-14 -5.5959E-14 5.6600E-13 3.5092E-13
7.3565E-14 2.2291E-13 5.2686E-14 -7.7215E-14 3.5092E-13 4.8660E-13
# lat0 lon0 xBary yBary zBary JD0
9.118536 10.354483 0.457178 0.140944 -0.879582 2451427.943383
# Heliocentric elements and errors
Epoch: 2451428.5000 = 1999/09/07
Mean Anomaly: 9.08125 +/- 0.004
Argument of Peri: 114.79972 +/- 0.006
Long of Asc Node: 214.57524 +/- 0.000
Inclination: 20.44286 +/- 0.000
Eccentricity: 0.57519385 +/- 0.0001
Semi-Major Axis: 86.49581835 +/- 0.0225
Time of Perihelion: 2444016.5192 +/- 4.2
Perihelion: 36.74395578 +/- 0.0125
Aphelion: 136.24768092 +/- 0.0364
Period (y) 804.4534 +/- 0.31
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.92897802 +/- 0.0011
Ecliptic Y 6.64929637 +/- 0.0002
Ecliptic Z 6.19389224 +/- 0.0002
Ecliptic XDOT 0.00043037 +/- 0.0000
Ecliptic YDOT 0.00322356 +/- 0.0000
Ecliptic ZDOT -0.00089832 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.97534356 +/- 0.0011
Geocenter to KBO 39.08516037 +/- 0.0011
# Hcoef: 7.73
The following table shows the complete astrometric record for 99RZ214. 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 (99RZ214) followed by the observatory code and reference code for the source of the astrometry.
1999 09 06.44264 00 23 27.75 +12 28 25.5 23.4R 99RZ214 568 Ca8546 1999 09 06.48988 00 23 27.58 +12 28 24.0 23.2R 99RZ214 568 Ca8546 1999 09 06.53045 00 23 27.40 +12 28 23.2 23.1R 99RZ214 568 Ca8546 1999 09 09.52779 00 23 15.05 +12 27 05.4 23.8R 99RZ214 568 Ca8546 1999 09 09.53939 00 23 15.00 +12 27 05.1 24.1R 99RZ214 568 Ca8546 1999 10 09.45885 00 21 02.58 +12 11 00.3 23.7R 99RZ214 568 Ca8546 1999 10 09.50226 00 21 02.36 +12 10 58.9 23.5R 99RZ214 568 Ca8546 1999 11 10.35318 00 18 59.93 +11 51 28.4 23.7R 99RZ214 568 Ca8546 1999 11 10.39921 00 18 59.82 +11 51 27.1 23.6R 99RZ214 568 Ca8546 2000 12 27.22947 00 25 08.531 +11 40 35.16 23.1R 99RZ214 568 Cl2529 2000 12 28.23874 00 25 09.610 +11 40 22.20 23.2R 99RZ214 568 Cl2529 2003 11 21.13688 00 46 04.66 +12 18 01.6 23.0R 99RZ214 695 Cl2529 2003 11 21.18662 00 46 04.50 +12 17 59.9 99RZ214 695 Cl2529 2015 11 08.23092 01 59 34.01 +12 57 49.9 24.1R 99RZ214 G37 C~1dc0 2015 11 08.29455 01 59 33.80 +12 57 48.2 99RZ214 G37 C~1dc0 2017 09 22.334751 02 13 14.66 +13 15 26.1 99RZ214 W84 C~3i92 2017 09 22.339456 02 13 14.65 +13 15 26.2 99RZ214 W84 C~3i92
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 -0.21 0.00 0.10
2 0.0001 0.00 0.18 0.00 -0.21
3 0.0002 0.00 0.01 0.00 0.01
4 0.0084 0.00 -0.04 0.00 -0.04
5 0.0085 0.00 -0.05 0.00 -0.03
6 0.0904 0.00 0.16 0.00 -0.01
7 0.0905 0.00 -0.21 0.00 0.17
8 0.1777 0.00 0.05 0.00 -0.38
9 0.1778 0.00 0.53 0.00 -0.07
10 1.3081 0.00 -0.29 0.00 0.29
11 1.3109 0.00 -0.53 0.00 0.20
12 4.2072 0.00 0.32 0.00 0.05
13 4.2074 0.00 0.02 0.00 -0.13
14 16.1719 0.00 -0.47 0.00 0.09
15 16.1721 0.00 0.34 0.00 0.10
16 18.0449 0.00 0.02 0.00 -0.19
17 18.0449 0.00 0.10 0.00 0.01
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.
99RZ214 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 86.316 86.317 86.315 ecceobj 0.574 0.574 0.574 incobj 20.442 20.442 20.442 qmin 35.638 35.814 35.832 qmax 137.866 136.922 138.073 amean 85.066 84.877 85.300 amin 83.655 83.604 83.654 amax 87.279 86.743 87.350 emean 0.564 0.561 0.563 emin 0.548 0.547 0.547 emax 0.582 0.578 0.581 imean 21.634 21.831 21.810 imin 20.583 20.801 20.833 imax 22.770 22.803 22.761 excite_mean 0.673 0.673 0.675 fracstop 1.000 1.000 1.000 cjmean 2.935 2.935 2.935 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 226.9 210.7 222.2 kozaiamp 180.0 180.0 179.9