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: 143991
# Created Sun Dec 22 02:06:57 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 36 observations of 36
# Arc: 15.32y
# First observation: 2003/10/03
# Last observation: 2019/01/29
# Chi-squared of fit: 153.46 DOF: 66 RMS: 0.36
# Min/Max residuals: -0.66 0.82
# Exact a, adot, b, bdot, g, gdot:
1.743082E-05 2.330318E-02 6.309042E-06 8.182810E-03 2.450197E-02 -2.381664E-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
0.092714 68.361723 0.858100 0.000878 -0.519487 2452915.947633
# Heliocentric elements and errors
Epoch: 2452916.5000 = 2003/10/04
Mean Anomaly: 309.73580 +/- 0.000
Argument of Peri: 64.30715 +/- 0.000
Long of Asc Node: 66.91781 +/- 0.000
Inclination: 19.38037 +/- 0.000
Eccentricity: 0.14015511 +/- 0.0000
Semi-Major Axis: 44.76000568 +/- 0.0000
Time of Perihelion: 2468188.2891 +/- 0.0
Perihelion: 38.48666218 +/- 0.0000
Aphelion: 51.03334917 +/- 0.0000
Period (y) 299.4632 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 16.03512062 +/- 0.0000
Ecliptic Y 38.10702446 +/- 0.0000
Ecliptic Z 0.06630878 +/- 0.0000
Ecliptic XDOT -0.00252399 +/- 0.0000
Ecliptic YDOT 0.00070548 +/- 0.0000
Ecliptic ZDOT 0.00091408 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.34345367 +/- 0.0000
Geocenter to KBO 40.81312621 +/- 0.0000
# Hcoef: 5.61
The following table shows the complete astrometric record for 143991. 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 (143991) followed by the observatory code and reference code for the source of the astrometry.
2003 10 03.44689 04 26 24.37 +21 47 29.4 143991 568 Cq9908 2003 10 03.49803 04 26 24.25 +21 47 29.4 143991 568 Cq9908 2003 10 03.55925 04 26 24.09 +21 47 29.4 143991 568 Cq9908 2003 12 16.31818 04 20 45.81 +21 40 26.6 22.0g 143991 568 Cq9908 2003 12 16.34467 04 20 45.67 +21 40 26.4 22.0g 143991 568 Cq9908 2003 12 16.37098 04 20 45.53 +21 40 26.2 21.9g 143991 568 Cq9908 2003 12 17.39000 04 20 40.34 +21 40 18.6 143991 568 Cq9908 2003 12 17.42270 04 20 40.17 +21 40 18.4 143991 568 Cq9908 2003 12 21.187599 04 20 21.18 +21 39 50.1 21.7V 143991 645 C~1Pyl 2003 12 21.188428 04 20 21.17 +21 39 50.1 21.6V 143991 645 C~1Pyl 2003 12 21.190916 04 20 21.16 +21 39 50.1 22.5V 143991 645 C~1Pyl 2004 12 11.36654 04 26 32.84 +22 22 17.0 21.7r 143991 568 Cq9908 2004 12 11.39535 04 26 32.69 +22 22 16.7 21.8r 143991 568 Cq9908 2004 12 11.42484 04 26 32.52 +22 22 16.5 21.7r 143991 568 Cq9908 2004 12 12.28992 04 26 27.92 +22 22 10.3 21.6r 143991 568 Cq9908 2005 11 04.40195 04 35 20.57 +23 06 44.3 21.5R 143991 695 Cq9908 2005 11 04.41300 04 35 20.53 +23 06 44.3 21.5R 143991 695 Cq9908 2005 11 04.45463 04 35 20.33 +23 06 44.2 21.5R 143991 695 Cq9908 2005 12 24.26442 04 30 56.52 +23 01 43.1 22.7r 143991 568 C~0DGi 2005 12 24.36213 04 30 56.02 +23 01 42.5 22.5r 143991 568 C~0DGi 2005 12 24.39647 04 30 55.85 +23 01 42.2 22.6r 143991 568 C~0DGi 2005 12 25.40044 04 30 50.86 +23 01 35.7 22.6r 143991 568 C~0DGi 2006 08 05.26106 04 41 55.72 +23 38 16.9 21.3R 143991 250 S~06HZ 2006 08 05.26546 04 41 55.74 +23 38 17.0 143991 250 S~06HZ 2006 08 05.26986 04 41 55.76 +23 38 17.0 143991 250 S~06HZ 2006 08 05.27426 04 41 55.78 +23 38 17.0 143991 250 S~06HZ 2006 11 23.35392 04 39 20.12 +23 45 17.0 143991 695 Cs8636 2006 11 23.45422 04 39 19.56 +23 45 16.5 143991 695 Cs8636 2017 12 20.46653 05 44 33.347 +30 21 32.08 21.3R 143991 G37 C~4dTa 2017 12 20.50349 05 44 33.136 +30 21 32.31 143991 G37 C~4dTa 2019 01 04.12375 05 49 51.37 +30 52 36.6 20.4R 143991 W67 C~38hN 2019 01 04.19327 05 49 50.96 +30 52 36.8 20.8R 143991 W67 C~38hN 2019 01 04.27656 05 49 50.46 +30 52 37.0 20.7R 143991 W67 C~38hN 2019 01 29.04169 05 47 42.26 +30 51 41.8 20.7R 143991 W67 C~38hN 2019 01 29.08248 05 47 42.08 +30 51 41.4 20.6R 143991 W67 C~38hN 2019 01 29.12142 05 47 41.89 +30 51 41.4 20.6R 143991 W67 C~38hN
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 -0.49 0.00 -0.29
2 0.0001 0.00 -0.38 0.00 -0.27
3 0.0003 0.00 -0.47 0.00 -0.25
4 0.2022 0.00 0.08 0.00 0.28
5 0.2023 0.00 0.06 0.00 0.27
6 0.2024 0.00 0.03 0.00 0.27
7 0.2052 0.00 0.66 0.00 0.28
8 0.2053 0.00 0.66 0.00 0.33
9 0.2156 0.00 0.51 0.00 -0.45
10 0.2156 0.00 0.42 0.00 -0.44
11 0.2156 0.00 0.46 0.00 -0.42
12 1.1907 0.00 -0.27 0.00 0.10
13 1.1908 0.00 -0.17 0.00 0.01
14 1.1909 0.00 -0.31 0.00 0.03
15 1.1933 0.00 -0.19 0.00 0.15
16 2.0889 0.00 -0.66 0.00 -0.22
17 2.0889 0.00 -0.46 0.00 -0.18
18 2.0890 0.00 -0.45 0.00 -0.11
19 2.2254 0.00 -0.23 0.00 -0.32
20 2.2256 0.00 -0.28 0.00 -0.30
21 2.2257 0.00 -0.20 0.00 -0.38
22 2.2285 0.00 -0.14 0.00 -0.41
23 2.8386 0.00 0.49 0.00 0.78
24 2.8387 0.00 0.54 0.00 0.82
25 2.8387 0.00 0.59 0.00 0.76
26 2.8387 0.00 0.63 0.00 0.71
27 3.1401 0.00 -0.33 0.00 -0.13
28 3.1403 0.00 -0.40 0.00 -0.10
29 14.2150 0.00 -0.09 0.00 -0.14
30 14.2151 0.00 0.13 0.00 0.03
31 15.2544 0.00 0.11 0.00 -0.19
32 15.2546 0.00 0.14 0.00 -0.00
33 15.2548 0.00 0.03 0.00 0.20
34 15.3226 0.00 0.04 0.00 0.05
35 15.3228 0.00 0.02 0.00 -0.17
36 15.3229 0.00 -0.26 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.
143991 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.925 44.925 44.925 ecceobj 0.138 0.138 0.138 incobj 19.340 19.340 19.340 qmin 37.772 37.793 37.786 qmax 51.811 51.809 51.895 amean 44.627 44.626 44.627 amin 44.249 44.247 44.260 amax 45.034 45.044 45.044 emean 0.134 0.134 0.134 emin 0.119 0.119 0.118 emax 0.151 0.151 0.152 imean 18.111 18.111 18.111 imin 17.580 17.578 17.576 imax 18.552 18.553 18.555 excite_mean 0.339 0.339 0.339 fracstop 1.000 1.000 1.000 cjmean 2.968 2.968 2.968 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 177.5 177.6 177.6 kozaiamp 180.0 180.0 180.0