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: 99CH119
# Created Sun Dec 22 02:08:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 25.08y
# First observation: 1999/02/11
# Last observation: 2024/03/13
# Chi-squared of fit: 90.74 DOF: 46 RMS: 0.33
# Min/Max residuals: -0.75 0.59
# Exact a, adot, b, bdot, g, gdot:
1.111657E-05 1.801888E-02 7.668865E-06 6.543026E-03 2.178338E-02 -4.152134E-04
# Covariance matrix:
1.2485E-13 -1.9333E-14 8.3829E-15 -4.9196E-15 -3.1954E-14 -3.0410E-14
-1.9333E-14 9.2575E-15 -5.5359E-15 3.2128E-15 -2.6890E-15 2.0113E-14
8.3829E-15 -5.5359E-15 9.9924E-14 -7.4752E-15 5.6101E-15 -1.3221E-14
-4.9196E-15 3.2128E-15 -7.4752E-15 1.8944E-15 -2.9169E-15 7.6510E-15
-3.1954E-14 -2.6890E-15 5.6101E-15 -2.9169E-15 2.2662E-13 -2.0670E-14
-3.0410E-14 2.0113E-14 -1.3221E-14 7.6510E-15 -2.0670E-14 4.8051E-14
# lat0 lon0 xBary yBary zBary JD0
0.442084 123.150045 -0.327568 0.007018 -0.937888 2451220.785643
# Heliocentric elements and errors
Epoch: 2451220.5000 = 1999/02/11
Mean Anomaly: 188.68903 +/- 0.021
Argument of Peri: 173.89793 +/- 0.007
Long of Asc Node: 122.35009 +/- 0.000
Inclination: 19.98349 +/- 0.000
Eccentricity: 0.08412688 +/- 0.0001
Semi-Major Axis: 43.23906922 +/- 0.0034
Time of Perihelion: 2500639.6886 +/- 8.9
Perihelion: 39.60150123 +/- 0.0041
Aphelion: 46.87663720 +/- 0.0045
Period (y) 284.3300 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.88176976 +/- 0.0006
Ecliptic Y 39.03966009 +/- 0.0008
Ecliptic Z 0.35455221 +/- 0.0000
Ecliptic XDOT -0.00186579 +/- 0.0000
Ecliptic YDOT -0.00127841 +/- 0.0000
Ecliptic ZDOT 0.00082194 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.84108746 +/- 0.0008
Geocenter to KBO 45.90661113 +/- 0.0010
# Hcoef: 7.22
The following table shows the complete astrometric record for 99CH119. 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 (99CH119) followed by the observatory code and reference code for the source of the astrometry.
1999 02 11.28490 08 22 13.14 +19 52 59.7 23.6R 99CH119 568 Ca4178 1999 02 11.32683 08 22 12.96 +19 53 00.4 23.6R 99CH119 568 Ca4178 1999 02 19.22921 08 21 39.54 +19 55 20.7 23.6R 99CH119 568 Ca4178 1999 02 19.24081 08 21 39.49 +19 55 20.8 23.6R 99CH119 568 Ca4178 1999 04 08.31256 08 19 37.27 +20 04 43.6 23.5R 99CH119 568 Ca4506 1999 04 09.30819 08 19 36.66 +20 04 48.7 23.5R 99CH119 568 Ca4506 2000 01 02.57599 08 29 52.41 +19 47 16.9 99CH119 568 Ca8502 2000 01 02.61670 08 29 52.25 +19 47 17.9 23.2R 99CH119 568 Ca8502 2000 01 02.64248 08 29 52.13 +19 47 18.3 99CH119 568 Ca8502 2000 01 06.59699 08 29 35.25 +19 48 34.4 99CH119 568 Ca8502 2000 01 06.62799 08 29 35.16 +19 48 34.7 99CH119 568 Ca8502 2001 03 25.14839 08 29 07.65 +20 17 37.5 25.2R 99CH119 695 Cc9919 2001 03 25.23714 08 29 07.41 +20 17 38.6 99CH119 695 Cc9919 2002 02 06.44509 08 36 32.82 +20 12 05.8 22.8R 99CH119 568 Cf1463 2002 02 06.49764 08 36 32.60 +20 12 06.9 99CH119 568 Cf1463 2004 12 15.344777 08 54 15.40 +20 09 38.2 99CH119 645 C~1cF2 2004 12 15.345606 08 54 15.40 +20 09 38.2 99CH119 645 C~1cF2 2004 12 15.348094 08 54 15.39 +20 09 38.2 99CH119 645 C~1cF2 2013 03 12.13951 09 26 06.44 +21 03 45.9 23.6R 99CH119 G37 C~0qSP 2013 03 12.27776 09 26 05.90 +21 03 48.4 99CH119 G37 C~0qSP 2018 02 14.220313 09 51 58.04 +20 53 25.7 99CH119 W84 C~3i8v 2018 02 14.223021 09 51 58.03 +20 53 25.9 99CH119 W84 C~3i8v 2018 03 15.088970 09 49 53.54 +21 04 16.5 99CH119 W84 C~3i8v 2018 03 15.091111 09 49 53.53 +21 04 16.2 99CH119 W84 C~3i8v 2024 03 13.189900 10 18 52.530 +20 47 32.90 23.5G 99CH119 G37 C~7wJW 2024 03 13.240230 10 18 52.367 +20 47 33.57 99CH119 G37 C~7wJW
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 0.27 0.00 -0.68
2 0.0001 0.00 0.36 0.00 -0.75
3 0.0218 0.00 0.18 0.00 -0.36
4 0.0218 0.00 0.14 0.00 -0.46
5 0.1534 0.00 -0.32 0.00 -0.53
6 0.1561 0.00 -0.27 0.00 -0.53
7 0.8906 0.00 -0.00 0.00 0.22
8 0.8907 0.00 0.19 0.00 0.46
9 0.8908 0.00 0.03 0.00 0.38
10 0.9016 0.00 -0.34 0.00 0.56
11 0.9017 0.00 0.36 0.00 0.27
12 2.1160 0.00 0.17 0.00 0.31
13 2.1162 0.00 -0.68 0.00 0.59
14 2.9874 0.00 -0.17 0.00 0.03
15 2.9876 0.00 0.17 0.00 0.09
16 5.8427 0.00 -0.09 0.00 0.12
17 5.8427 0.00 -0.05 0.00 0.11
18 5.8427 0.00 -0.09 0.00 0.06
19 14.0804 0.00 0.26 0.00 0.33
20 14.0807 0.00 0.05 0.00 0.53
21 19.0087 0.00 -0.02 0.00 -0.07
22 19.0087 0.00 0.02 0.00 0.05
23 19.0878 0.00 -0.10 0.00 0.04
24 19.0878 0.00 -0.12 0.00 -0.30
25 25.0839 0.00 -0.38 0.00 -0.05
26 25.0841 0.00 0.38 0.00 -0.45
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.
99CH119 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.353 43.353 43.353 ecceobj 0.081 0.081 0.081 incobj 19.953 19.953 19.953 qmin 38.956 38.956 38.955 qmax 48.027 48.031 48.022 amean 43.363 43.363 43.363 amin 43.027 43.027 43.027 amax 43.724 43.724 43.723 emean 0.085 0.085 0.085 emin 0.073 0.073 0.073 emax 0.099 0.099 0.098 imean 18.409 18.409 18.409 imin 17.964 17.964 17.964 imax 18.861 18.861 18.861 excite_mean 0.327 0.327 0.327 fracstop 1.000 1.000 1.000 cjmean 2.963 2.963 2.963 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 180.5 180.5 180.5 kozaiamp 180.0 180.0 180.0