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: 05GA187 # Created Fri Nov 22 02:08:46 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 25 observations of 25 # Arc: 10.17y # First observation: 2005/04/10 # Last observation: 2015/06/12 # Chi-squared of fit: 37.48 DOF: 44 RMS: 0.22 # Min/Max residuals: -0.71 0.31 # Exact a, adot, b, bdot, g, gdot: 1.435940E-05 2.478611E-02 -1.530965E-06 -8.382615E-03 2.638707E-02 -5.675860E-03 # Covariance matrix: 3.1141E-13 -1.3270E-13 -1.6649E-14 4.7209E-14 3.0550E-13 -5.4738E-13 -1.3270E-13 2.1298E-13 2.4508E-14 -7.8033E-14 -9.2191E-14 8.9773E-13 -1.6649E-14 2.4508E-14 8.6076E-14 -1.8835E-14 -1.4418E-14 1.0535E-13 4.7209E-14 -7.8033E-14 -1.8835E-14 3.2660E-14 3.6560E-14 -3.3470E-13 3.0550E-13 -9.2191E-14 -1.4418E-14 3.6560E-14 4.4564E-13 -4.2747E-13 -5.4738E-13 8.9773E-13 1.0535E-13 -3.3470E-13 -4.2747E-13 3.8511E-12 # lat0 lon0 xBary yBary zBary JD0 -1.380691 -148.015342 0.197246 -0.023492 -0.977855 2453470.869283 # Heliocentric elements and errors Epoch: 2453470.5000 = 2005/04/10 Mean Anomaly: 287.00543 +/- 0.014 Argument of Peri: 282.06890 +/- 0.023 Long of Asc Node: 27.71354 +/- 0.000 Inclination: 18.70752 +/- 0.000 Eccentricity: 0.21598046 +/- 0.0001 Semi-Major Axis: 39.57598946 +/- 0.0041 Time of Perihelion: 2471909.3643 +/- 11.8 Perihelion: 31.02834887 +/- 0.0043 Aphelion: 48.12363004 +/- 0.0057 Period (y) 248.9751 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.07295930 +/- 0.0008 Ecliptic Y -20.41978364 +/- 0.0005 Ecliptic Z -0.91317089 +/- 0.0000 Ecliptic XDOT 0.00187975 +/- 0.0000 Ecliptic YDOT -0.00186548 +/- 0.0000 Ecliptic ZDOT -0.00085526 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.87971508 +/- 0.0007 Geocenter to KBO 37.89750060 +/- 0.0010 # Hcoef: 7.33
The following table shows the complete astrometric record for 05GA187. 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 (05GA187) followed by the observatory code and reference code for the source of the astrometry.
2005 04 10.36854 13 57 17.10 -13 27 31.5 05GA187 695 Cn3379 2005 04 11.33662 13 57 12.17 -13 27 09.6 05GA187 695 Cn3379 2005 04 11.42230 13 57 11.74 -13 27 07.3 05GA187 695 Cn3379 2005 05 09.18071 13 54 49.41 -13 16 33.6 22.0R 05GA187 807 Cn5372 2005 05 10.17511 13 54 44.53 -13 16 11.5 05GA187 807 Cn5372 2005 05 10.25976 13 54 44.09 -13 16 09.7 05GA187 807 Cn5372 2005 05 10.31720 13 54 43.84 -13 16 08.4 05GA187 807 Cn5372 2005 06 02.31324 13 53 04.12 -13 08 33.8 23.5R 05GA187 568 Cn6545 2005 06 02.34634 13 53 03.98 -13 08 33.2 05GA187 568 Cn6545 2005 06 07.06353 13 52 47.46 -13 07 18.1 23.4R 05GA187 304 Cn6545 2005 06 07.15549 13 52 47.14 -13 07 17.0 05GA187 304 Cn6545 2005 07 09.05281 13 51 43.47 -13 02 59.9 23.6R 05GA187 304 Cn8899 2005 07 09.10588 13 51 43.44 -13 02 59.9 05GA187 304 Cn8899 2005 08 07.99805 13 52 10.44 -13 06 42.3 22.1R 05GA187 807 Co4001 2005 08 09.00612 13 52 12.82 -13 06 57.9 05GA187 807 Co4001 2005 08 09.99889 13 52 15.26 -13 07 13.7 05GA187 807 Co4001 2006 04 26.19356 14 00 47.21 -14 18 32.5 22.2R 05GA187 807 Cr3594 2006 04 26.27932 14 00 46.75 -14 18 30.2 05GA187 807 Cr3594 2006 04 27.21054 14 00 41.85 -14 18 08.9 05GA187 807 Cr3594 2013 05 08.07392 14 36 32.112 -20 58 53.23 23.2r 05GA187 807 C~2Y3u 2013 05 08.16008 14 36 31.590 -20 58 51.75 05GA187 807 C~2Y3u 2013 05 08.24737 14 36 31.126 -20 58 49.46 05GA187 807 C~2Y3u 2015 06 12.17521 14 45 10.36 -22 43 14.5 23.1R 05GA187 695 C~1hTh 2015 06 12.22256 14 45 10.15 -22 43 13.5 05GA187 695 C~1hTh 2015 06 12.27596 14 45 09.89 -22 43 12.3 05GA187 695 C~1hTh
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 -0.16 0.00 -0.71
2 0.0027 0.00 -0.07 0.00 -0.10
3 0.0029 0.00 0.15 0.00 0.31
4 0.0789 0.00 0.07 0.00 0.07
5 0.0816 0.00 -0.13 0.00 0.02
6 0.0818 0.00 -0.44 0.00 -0.07
7 0.0820 0.00 0.06 0.00 -0.06
8 0.1450 0.00 0.08 0.00 -0.10
9 0.1450 0.00 -0.15 0.00 -0.05
10 0.1580 0.00 0.17 0.00 0.24
11 0.1582 0.00 0.08 0.00 -0.04
12 0.2455 0.00 -0.04 0.00 -0.04
13 0.2457 0.00 0.00 0.00 -0.08
14 0.3275 0.00 0.18 0.00 0.06
15 0.3303 0.00 -0.02 0.00 0.13
16 0.3330 0.00 -0.17 0.00 0.27
17 1.0426 0.00 0.30 0.00 -0.06
18 1.0429 0.00 0.25 0.00 0.27
19 1.0454 0.00 -0.12 0.00 0.21
20 8.0759 0.00 -0.14 0.00 -0.18
21 8.0761 0.00 -0.54 0.00 -0.50
22 8.0763 0.00 0.02 0.00 -0.06
23 10.1706 0.00 0.21 0.00 0.13
24 10.1707 0.00 0.27 0.00 0.15
25 10.1709 0.00 -0.00 0.00 0.25
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.
05GA187 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.159 39.159 39.159 ecceobj 0.218 0.218 0.218 incobj 18.814 18.814 18.814 qmin 27.657 27.659 27.656 qmax 51.824 51.831 51.816 amean 39.453 39.453 39.453 amin 39.046 39.045 39.046 amax 39.944 39.942 39.946 emean 0.249 0.248 0.249 emin 0.196 0.196 0.197 emax 0.298 0.298 0.298 imean 16.606 16.607 16.606 imin 14.062 14.062 14.062 imax 18.868 18.868 18.868 excite_mean 0.381 0.381 0.381 fracstop 1.000 1.000 1.000 cjmean 2.887 2.887 2.887 libcent 0 178.8 178.2 179.3 libamp 0 61.2 61.2 61.2 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 264.3 264.3 264.3 kozaiamp 47.1 47.2 47.1