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: 130391
# Created Sun Dec 22 02:06:54 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 22 observations of 22
# Arc: 8.04y
# First observation: 1999/04/17
# Last observation: 2007/05/02
# Chi-squared of fit: 29.01 DOF: 38 RMS: 0.20
# Min/Max residuals: -0.58 0.65
# Exact a, adot, b, bdot, g, gdot:
1.799400E-05 3.359250E-02 -7.609658E-06 -1.453737E-02 3.010936E-02 1.015318E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.995621 -138.064771 0.264972 0.033734 -0.975449 2451285.865553
# Heliocentric elements and errors
Epoch: 2451286.5000 = 1999/04/18
Mean Anomaly: 2.90549 +/- 0.000
Argument of Peri: 169.82192 +/- 0.000
Long of Asc Node: 45.96282 +/- 0.000
Inclination: 23.50954 +/- 0.000
Eccentricity: 0.27542566 +/- 0.0000
Semi-Major Axis: 47.13179538 +/- 0.0000
Time of Perihelion: 2450332.6355 +/- 0.0
Perihelion: 34.15048971 +/- 0.0000
Aphelion: 60.11310105 +/- 0.0000
Period (y) 323.5781 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.58624683 +/- 0.0000
Ecliptic Y -22.63691949 +/- 0.0000
Ecliptic Z 1.15633470 +/- 0.0000
Ecliptic XDOT 0.00193602 +/- 0.0000
Ecliptic YDOT -0.00235596 +/- 0.0000
Ecliptic ZDOT -0.00131785 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.18219408 +/- 0.0000
Geocenter to KBO 33.21227253 +/- 0.0000
# Hcoef: 7.97
The following table shows the complete astrometric record for 130391. 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 (130391) followed by the observatory code and reference code for the source of the astrometry.
1999 04 17.36481 14 40 30.29 -13 30 58.2 24.1R 130391 695 Ch1267 1999 04 17.40913 14 40 30.06 -13 30 57.4 130391 695 Ch1267 2000 05 06.04674 14 45 08.23 -14 47 23.5 22.8R 130391 809 Cb5923 2000 05 06.14545 14 45 07.64 -14 47 21.3 130391 809 Cb5923 2000 05 06.24139 14 45 07.05 -14 47 19.6 130391 809 Cb5923 2000 05 06.33509 14 45 06.47 -14 47 17.9 130391 809 Cb5923 2000 05 07.30056 14 45 00.81 -14 46 59.6 130391 809 Cb5923 2000 06 24.96979 14 41 01.58 -14 36 23.6 130391 950 Cb7059 2000 06 25.01103 14 41 01.45 -14 36 23.6 130391 950 Cb7059 2001 03 23.50481 14 55 33.92 -16 19 45.1 130391 695 Cd0028 2001 03 29.47964 14 55 08.71 -16 18 44.1 130391 695 Cd0028 2001 03 30.50000 14 55 04.11 -16 18 32.6 130391 695 Cd0028 2001 03 31.46321 14 54 59.74 -16 18 21.4 130391 695 Cd0028 2001 03 31.48365 14 54 59.63 -16 18 21.0 130391 695 Cd0028 2001 03 31.50325 14 54 59.53 -16 18 20.7 130391 695 Cd0028 2006 04 27.26868 15 26 46.94 -22 42 18.6 21.7R 130391 807 Cr3553 2006 04 27.34068 15 26 46.50 -22 42 17.8 130391 807 Cr3553 2006 04 28.24437 15 26 41.25 -22 42 08.8 130391 807 Cr3553 2007 05 02.58087 15 33 23.07 -23 55 24.9 23.2R 130391 250 S~06HE 2007 05 02.58850 15 33 23.03 -23 55 24.8 130391 250 S~06HE 2007 05 02.59545 15 33 22.99 -23 55 24.8 130391 250 S~06HE 2007 05 02.60239 15 33 22.94 -23 55 24.7 130391 250 S~06HE
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 -0.07 0.00 0.02
2 0.0001 0.00 0.26 0.00 -0.01
3 1.0532 0.00 0.20 0.00 -0.58
4 1.0535 0.00 0.21 0.00 -0.15
5 1.0537 0.00 -0.02 0.00 -0.19
6 1.0540 0.00 -0.32 0.00 -0.21
7 1.0566 0.00 0.06 0.00 0.65
8 1.1899 0.00 -0.12 0.00 0.17
9 1.1900 0.00 -0.01 0.00 -0.05
10 1.9333 0.00 -0.22 0.00 -0.09
11 1.9497 0.00 -0.08 0.00 0.11
12 1.9525 0.00 -0.19 0.00 0.02
13 1.9551 0.00 0.29 0.00 0.00
14 1.9552 0.00 0.08 0.00 0.16
15 1.9552 0.00 -0.04 0.00 0.22
16 7.0278 0.00 0.24 0.00 -0.11
17 7.0280 0.00 0.02 0.00 -0.05
18 7.0305 0.00 0.25 0.00 -0.19
19 8.0417 0.00 -0.22 0.00 -0.08
20 8.0417 0.00 -0.14 0.00 -0.05
21 8.0417 0.00 -0.12 0.00 -0.12
22 8.0417 0.00 -0.24 0.00 -0.09
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.
130391 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.091 47.091 47.091 ecceobj 0.275 0.275 0.275 incobj 23.516 23.516 23.516 qmin 33.659 33.652 33.656 qmax 63.095 63.158 63.021 amean 47.796 47.797 47.796 amin 47.091 47.030 47.091 amax 48.621 48.674 48.612 emean 0.276 0.276 0.276 emin 0.250 0.252 0.252 emax 0.299 0.299 0.299 imean 23.053 23.140 23.034 imin 22.543 22.577 22.534 imax 23.717 23.641 23.712 excite_mean 0.479 0.480 0.479 fracstop 1.000 1.000 1.000 cjmean 2.859 2.858 2.859 libcent 0 180.4 180.7 180.1 libamp 0 165.3 172.9 165.2 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 195.4 181.2 196.4 kozaiamp 179.9 180.0 180.0