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: 05GD187
# Created Fri Nov 22 02:08:47 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 19.01y
# First observation: 2005/04/12
# Last observation: 2024/04/14
# Chi-squared of fit: 24.98 DOF: 46 RMS: 0.17
# Min/Max residuals: -0.45 0.46
# Exact a, adot, b, bdot, g, gdot:
1.392130E-05 2.169866E-02 -1.057624E-06 -2.401880E-04 2.310104E-02 -3.592664E-04
# Covariance matrix:
1.8938E-13 -3.2281E-14 -5.0668E-16 2.5754E-16 -4.9835E-14 -5.5012E-14
-3.2281E-14 3.9283E-14 8.1659E-16 -4.1173E-16 -8.5566E-14 8.9030E-14
-5.0668E-16 8.1659E-16 1.2045E-13 -8.9505E-15 -1.8254E-15 1.9106E-15
2.5754E-16 -4.1173E-16 -8.9505E-15 1.2366E-15 9.1647E-16 -9.6336E-16
-4.9835E-14 -8.5566E-14 -1.8254E-15 9.1647E-16 3.8402E-13 -1.9945E-13
-5.5012E-14 8.9030E-14 1.9106E-15 -9.6336E-16 -1.9945E-13 2.0831E-13
# lat0 lon0 xBary yBary zBary JD0
0.294258 149.000150 -0.801216 0.003151 -0.595627 2453472.687163
# Heliocentric elements and errors
Epoch: 2453472.5000 = 2005/04/12
Mean Anomaly: 178.92669 +/- 0.094
Argument of Peri: 336.52900 +/- 0.088
Long of Asc Node: 354.56261 +/- 0.002
Inclination: 0.69933 +/- 0.000
Eccentricity: 0.01406316 +/- 0.0001
Semi-Major Axis: 43.28592675 +/- 0.0050
Time of Perihelion: 2401772.4287 +/- 28.6
Perihelion: 42.67719000 +/- 0.0064
Aphelion: 43.89466349 +/- 0.0065
Period (y) 284.7923 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.03253533 +/- 0.0010
Ecliptic Y 21.91367656 +/- 0.0006
Ecliptic Z 0.22228899 +/- 0.0000
Ecliptic XDOT -0.00128772 +/- 0.0000
Ecliptic YDOT -0.00223329 +/- 0.0000
Ecliptic ZDOT -0.00002863 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.89455959 +/- 0.0009
Geocenter to KBO 43.28815090 +/- 0.0012
# Hcoef: 7.32
The following table shows the complete astrometric record for 05GD187. 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 (05GD187) followed by the observatory code and reference code for the source of the astrometry.
2005 04 12.18642 10 04 57.11 +12 05 51.6 23.3R 05GD187 695 Cn3380 2005 04 12.25321 10 04 56.94 +12 05 52.5 05GD187 695 Cn3380 2005 04 13.19754 10 04 54.67 +12 06 03.9 05GD187 695 Cn3380 2005 06 08.95709 10 04 54.51 +12 05 33.6 23.0R 05GD187 304 Cn7074 2005 06 09.01469 10 04 54.65 +12 05 33.0 05GD187 304 Cn7074 2006 04 27.04912 10 09 13.56 +11 41 22.4 22.8R 05GD187 807 Cr3923 2006 04 28.03228 10 09 12.25 +11 41 28.7 05GD187 807 Cr3923 2007 02 15.20802 10 18 07.43 +10 51 03.5 05GD187 304 Cu1516 2007 02 15.25295 10 18 07.24 +10 51 04.6 05GD187 304 Cu1516 2007 02 15.28286 10 18 07.10 +10 51 05.3 05GD187 304 Cu1516 2009 01 21.20998 10 29 14.56 +09 45 15.5 24.2R 05GD187 250 S~06Aq 2009 01 21.21623 10 29 14.53 +09 45 15.6 05GD187 250 S~06Aq 2009 01 21.27387 10 29 14.33 +09 45 16.8 05GD187 250 S~06Aq 2009 01 21.28082 10 29 14.31 +09 45 17.0 05GD187 250 S~06Aq 2013 03 13.33358 10 44 22.29 +08 11 36.7 23.3R 05GD187 695 C~0udF 2013 03 14.30682 10 44 18.08 +08 12 02.0 05GD187 695 C~0udF 2013 03 14.41697 10 44 17.63 +08 12 04.9 05GD187 695 C~0udF 2015 02 18.28396 10 55 25.85 +07 02 20.6 23.4R 05GD187 695 C~1M6E 2015 02 18.37645 10 55 25.44 +07 02 22.8 05GD187 695 C~1M6E 2015 02 18.46696 10 55 25.05 +07 02 25.4 05GD187 695 C~1M6E 2020 02 18.276880 11 18 36.543 +04 32 12.49 23.9G 05GD187 G37 C~3iO3 2020 02 18.367850 11 18 36.171 +04 32 14.84 05GD187 G37 C~3iO3 2020 02 18.419070 11 18 35.951 +04 32 16.27 05GD187 G37 C~3iO3 2024 04 14.167150 11 33 05.654 +02 55 17.18 23.8G 05GD187 G37 C~7zkX 2024 04 14.208990 11 33 05.490 +02 55 18.09 05GD187 G37 C~7zkX 2024 04 14.249420 11 33 05.351 +02 55 18.82 05GD187 G37 C~7zkX
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 0.25 0.00 0.11
2 0.0002 0.00 0.19 0.00 0.16
3 0.0028 0.00 -0.24 0.00 -0.22
4 0.1582 0.00 -0.05 0.00 -0.13
5 0.1583 0.00 0.05 0.00 0.06
6 1.0400 0.00 -0.21 0.00 -0.04
7 1.0427 0.00 -0.23 0.00 -0.45
8 1.8454 0.00 -0.14 0.00 -0.10
9 1.8455 0.00 0.08 0.00 -0.13
10 1.8456 0.00 0.03 0.00 -0.19
11 3.7783 0.00 0.16 0.00 0.15
12 3.7783 0.00 0.04 0.00 0.11
13 3.7785 0.00 0.12 0.00 0.11
14 3.7785 0.00 0.20 0.00 0.17
15 7.9183 0.00 0.22 0.00 0.05
16 7.9209 0.00 -0.28 0.00 0.37
17 7.9212 0.00 0.15 0.00 0.46
18 9.8538 0.00 0.18 0.00 -0.03
19 9.8540 0.00 0.06 0.00 -0.25
20 9.8543 0.00 0.10 0.00 -0.02
21 14.8531 0.00 -0.06 0.00 -0.15
22 14.8533 0.00 -0.01 0.00 -0.14
23 14.8535 0.00 -0.13 0.00 -0.02
24 19.0061 0.00 0.06 0.00 0.08
25 19.0062 0.00 -0.11 0.00 0.03
26 19.0063 0.00 0.02 0.00 -0.16
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.
05GD187 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.990 42.990 42.990 ecceobj 0.022 0.022 0.022 incobj 0.702 0.702 0.702 qmin 41.227 41.227 41.227 qmax 45.116 45.115 45.116 amean 43.091 43.091 43.091 amin 42.766 42.766 42.766 amax 43.426 43.426 43.426 emean 0.023 0.023 0.023 emin 0.004 0.004 0.004 emax 0.039 0.039 0.039 imean 2.087 2.087 2.087 imin 1.038 1.038 1.038 imax 2.827 2.827 2.827 excite_mean 0.043 0.043 0.043 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 180.2 180.1 180.2 kozaiamp 180.0 180.0 179.9