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: 09JB19 # Created Sat Apr 20 01:13:09 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 18.15y # First observation: 2003/01/28 # Last observation: 2021/03/25 # Chi-squared of fit: 7.48 DOF: 28 RMS: 0.12 # Min/Max residuals: -0.18 0.27 # Exact a, adot, b, bdot, g, gdot: 1.282207E-05 1.803425E-02 -4.742650E-06 -5.971205E-03 2.188240E-02 1.428135E-03 # Covariance matrix: 1.3380E-12 -2.0406E-13 -2.1878E-13 5.5968E-14 1.5670E-13 -4.3282E-13 -2.0406E-13 7.4412E-14 1.0970E-13 -2.5612E-14 1.1083E-13 1.8843E-13 -2.1878E-13 1.0970E-13 5.0811E-13 -6.8880E-14 2.0998E-13 2.9364E-13 5.5968E-14 -2.5612E-14 -6.8880E-14 1.2630E-14 -4.5341E-14 -6.8281E-14 1.5670E-13 1.1083E-13 2.0998E-13 -4.5341E-14 4.9643E-13 3.1776E-13 -4.3282E-13 1.8843E-13 2.9364E-13 -6.8281E-14 3.1776E-13 5.0119E-13 # lat0 lon0 xBary yBary zBary JD0 14.736921 174.830742 0.712690 0.171177 -0.650851 2452667.984112 # Heliocentric elements and errors Epoch: 2452668.5000 = 2003/01/29 Mean Anomaly: 145.34538 +/- 0.029 Argument of Peri: 347.64553 +/- 0.017 Long of Asc Node: 31.49205 +/- 0.000 Inclination: 23.01494 +/- 0.000 Eccentricity: 0.12342729 +/- 0.0001 Semi-Major Axis: 41.92271232 +/- 0.0040 Time of Perihelion: 2412639.8248 +/- 9.8 Perihelion: 36.74830546 +/- 0.0045 Aphelion: 47.09711917 +/- 0.0053 Period (y) 271.4453 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -44.62347534 +/- 0.0014 Ecliptic Y 4.75645746 +/- 0.0001 Ecliptic Z 11.62473316 +/- 0.0004 Ecliptic XDOT -0.00057156 +/- 0.0000 Ecliptic YDOT -0.00221883 +/- 0.0000 Ecliptic ZDOT -0.00067687 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.35740644 +/- 0.0014 Geocenter to KBO 45.69881552 +/- 0.0015 # Hcoef: 7.17
The following table shows the complete astrometric record for 09JB19. 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 (09JB19) followed by the observatory code and reference code for the source of the astrometry.
2003 01 28.483369 12 05 03.23 +15 32 53.8 09JB19 645 C~7udm 2009 05 14.411216 12 18 05.980 +11 41 44.10 23.8i 09JB19 568 C~0aRU 2009 05 14.449905 12 18 05.870 +11 41 44.10 24.4i 09JB19 568 C~0aRU 2009 05 14.468298 12 18 05.820 +11 41 44.00 23.6i 09JB19 568 C~0aRU 2009 05 15.278405 12 18 03.690 +11 41 43.10 24.2g 09JB19 568 C~0aRU 2009 05 15.404764 12 18 03.349 +11 41 42.90 25.6i 09JB19 568 C~0aRU 2009 05 22.282631 12 17 46.970 +11 41 18.90 24.5g 09JB19 568 C~0aRU 2009 05 22.339035 12 17 46.850 +11 41 18.50 24.2g 09JB19 568 C~0aRU 2009 05 22.394945 12 17 46.720 +11 41 18.20 24.3g 09JB19 568 C~0aRU 2009 06 24.251691 12 17 16.25 +11 33 13.3 22.9i 09JB19 T14 C~7udm 2009 06 24.322809 12 17 16.27 +11 33 11.6 23.0i 09JB19 T14 C~7udm 2010 02 14.507662 12 26 58.13 +10 29 25.8 24.0g 09JB19 T14 C~7udm 2010 04 06.423567 12 23 35.41 +10 51 03.0 23.3i 09JB19 T14 C~7udm 2015 03 19.487275 12 40 34.67 +06 59 48.4 23.8g 09JB19 T14 C~7udm 2021 03 25.200066 12 58 36.26 +02 32 18.5 09JB19 W84 C~7udm 2021 03 25.202598 12 58 36.23 +02 32 18.4 09JB19 W84 C~7udm 2021 03 25.204845 12 58 36.23 +02 32 18.9 09JB19 W84 C~7udm
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 0.06
2 6.2914 0.00 0.11 0.00 -0.11
3 6.2915 0.00 0.04 0.00 -0.06
4 6.2915 0.00 0.04 0.00 -0.14
5 6.2938 0.00 -0.03 0.00 -0.09
6 6.2941 0.00 -0.07 0.00 -0.09
7 6.3129 0.00 -0.12 0.00 -0.02
8 6.3131 0.00 -0.04 0.00 -0.11
9 6.3132 0.00 -0.14 0.00 -0.09
10 6.4032 0.00 0.03 0.00 0.19
11 6.4034 0.00 0.03 0.00 0.17
12 7.0473 0.00 -0.01 0.00 0.25
13 7.1867 0.00 0.09 0.00 0.08
14 12.1369 0.00 0.00 0.00 -0.14
15 18.1539 0.00 0.16 0.00 -0.02
16 18.1539 0.00 -0.13 0.00 -0.18
17 18.1539 0.00 0.02 0.00 0.27
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.
09JB19 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.605 41.605 41.605 ecceobj 0.131 0.131 0.131 incobj 23.082 23.082 23.082 qmin 35.254 35.377 35.360 qmax 48.678 48.613 48.565 amean 41.812 41.811 41.812 amin 41.453 41.475 41.467 amax 42.216 42.199 42.202 emean 0.136 0.134 0.135 emin 0.119 0.117 0.121 emax 0.155 0.153 0.152 imean 22.155 22.205 22.190 imin 21.541 21.623 21.584 imax 22.785 22.788 22.785 excite_mean 0.401 0.401 0.401 fracstop 1.000 1.000 1.000 cjmean 2.883 2.883 2.883 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 171.1 172.2 177.5 kozaiamp 180.0 180.0 180.0