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: 99OH4
# Created Sun Dec 22 02:08:04 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 22 observations of 22
# Arc: 7.04y
# First observation: 1999/07/18
# Last observation: 2006/08/03
# Chi-squared of fit: 44.89 DOF: 38 RMS: 0.25
# Min/Max residuals: -0.44 0.54
# Exact a, adot, b, bdot, g, gdot:
1.424796E-05 2.383592E-02 -9.467698E-06 -1.277103E-02 2.635682E-02 4.062395E-04
# Covariance matrix:
3.0254E-13 -7.8207E-14 -2.3519E-14 3.2149E-14 4.9272E-13 -3.3595E-13
-7.8207E-14 1.8163E-13 6.8606E-14 -9.4405E-14 2.6678E-13 9.8617E-13
-2.3519E-14 6.8606E-14 1.4594E-13 -6.1948E-14 1.0144E-13 3.9689E-13
3.2149E-14 -9.4405E-14 -6.1948E-14 6.3342E-14 -1.4032E-13 -5.4611E-13
4.9272E-13 2.6678E-13 1.0144E-13 -1.4032E-13 2.4153E-12 1.4654E-12
-3.3595E-13 9.8617E-13 3.9689E-13 -5.4611E-13 1.4654E-12 5.7048E-12
# lat0 lon0 xBary yBary zBary JD0
0.425757 -56.368253 0.153270 0.007209 -1.002655 2451377.922683
# Heliocentric elements and errors
Epoch: 2451378.5000 = 1999/07/19
Mean Anomaly: 11.71231 +/- 0.133
Argument of Peri: 166.41469 +/- 0.144
Long of Asc Node: 124.19176 +/- 0.000
Inclination: 28.16206 +/- 0.000
Eccentricity: 0.04075398 +/- 0.0002
Semi-Major Axis: 40.56266835 +/- 0.0095
Time of Perihelion: 2448308.5714 +/- 34.8
Perihelion: 38.90957823 +/- 0.0113
Aphelion: 42.21575848 +/- 0.0119
Period (y) 258.3438 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 21.44913012 +/- 0.0012
Ecliptic Y -32.50721796 +/- 0.0019
Ecliptic Z 0.28159488 +/- 0.0000
Ecliptic XDOT 0.00208696 +/- 0.0000
Ecliptic YDOT 0.00133651 +/- 0.0000
Ecliptic ZDOT -0.00132621 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.94692909 +/- 0.0017
Geocenter to KBO 37.94087286 +/- 0.0022
# Hcoef: 8.23
The following table shows the complete astrometric record for 99OH4. 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 (99OH4) followed by the observatory code and reference code for the source of the astrometry.
1999 07 18.42194 20 23 21.11 -18 55 38.3 23.8R 99OH4 568 Ca7327 1999 07 18.44904 20 23 20.97 -18 55 38.8 99OH4 568 Ca7327 1999 07 18.47602 20 23 20.82 -18 55 39.6 99OH4 568 Ca7327 1999 08 11.20975 20 21 16.99 -19 05 34.4 23.4R 99OH4 675 Ca7327 1999 08 11.24326 20 21 16.83 -19 05 35.2 23.6R 99OH4 675 Ca7327 1999 08 11.27535 20 21 16.68 -19 05 36.2 99OH4 675 Ca7327 2000 08 05.33559 20 28 04.25 -19 26 52.0 99OH4 568 Cb7609 2000 08 05.38558 20 28 03.99 -19 26 53.4 99OH4 568 Cb7609 2000 08 05.42668 20 28 03.78 -19 26 54.8 99OH4 568 Cb7609 2000 08 06.32974 20 27 59.08 -19 27 17.6 24.5R 99OH4 568 Cb7609 2000 08 06.37103 20 27 58.86 -19 27 18.7 24.7R 99OH4 568 Cb7609 2000 08 06.41264 20 27 58.65 -19 27 19.8 99OH4 568 Cb7609 2001 07 25.36541 20 35 25.28 -19 44 31.3 23.1R 99OH4 568 Cd2765 2001 07 25.42296 20 35 24.98 -19 44 32.7 23.2R 99OH4 568 Cd2765 2001 07 25.48101 20 35 24.66 -19 44 34.4 23.2R 99OH4 568 Cd2765 2001 08 25.26370 20 32 48.44 -19 57 35.5 24.3R 99OH4 568 Ce3112 2001 08 25.28439 20 32 48.33 -19 57 35.7 23.5R 99OH4 568 Ce3112 2001 08 25.29802 20 32 48.26 -19 57 36.1 24.2R 99OH4 568 Ce3112 2006 08 03.42995 21 06 50.16 -21 27 57.7 23.5R 99OH4 250 S~06AK 2006 08 03.43435 21 06 50.13 -21 27 57.9 99OH4 250 S~06AK 2006 08 03.43875 21 06 50.11 -21 27 58.0 99OH4 250 S~06AK 2006 08 03.44314 21 06 50.08 -21 27 58.1 99OH4 250 S~06AK
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 0.36
2 0.0001 0.00 -0.03 0.00 0.54
3 0.0001 0.00 -0.13 0.00 0.42
4 0.0651 0.00 -0.11 0.00 0.37
5 0.0652 0.00 0.07 0.00 0.40
6 0.0653 0.00 0.29 0.00 0.18
7 1.0511 0.00 0.17 0.00 0.03
8 1.0512 0.00 0.24 0.00 -0.09
9 1.0513 0.00 0.36 0.00 -0.44
10 1.0538 0.00 0.08 0.00 -0.27
11 1.0539 0.00 0.05 0.00 -0.32
12 1.0540 0.00 0.20 0.00 -0.36
13 2.0204 0.00 -0.30 0.00 -0.30
14 2.0205 0.00 -0.19 0.00 -0.16
15 2.0207 0.00 -0.33 0.00 -0.31
16 2.1050 0.00 0.02 0.00 -0.39
17 2.1050 0.00 -0.17 0.00 -0.11
18 2.1051 0.00 -0.26 0.00 -0.19
19 7.0445 0.00 0.26 0.00 0.13
20 7.0445 0.00 0.15 0.00 0.06
21 7.0445 0.00 0.20 0.00 0.09
22 7.0445 0.00 0.09 0.00 0.12
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.
99OH4 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.500 40.500 40.500 ecceobj 0.039 0.039 0.039 incobj 28.183 28.183 28.183 qmin 38.221 38.219 38.226 qmax 42.947 42.930 42.975 amean 40.520 40.520 40.520 amin 40.220 40.229 40.212 amax 40.835 40.821 40.840 emean 0.042 0.042 0.042 emin 0.032 0.031 0.031 emax 0.053 0.053 0.053 imean 26.694 26.693 26.694 imin 26.301 26.300 26.301 imax 27.093 27.098 27.090 excite_mean 0.451 0.451 0.451 fracstop 1.000 1.000 1.000 cjmean 2.814 2.814 2.814 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 187.7 187.7 187.7 kozaiamp 179.9 180.0 180.0