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: 01FT185 # Created Sun Dec 22 02:08:15 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 13 observations of 13 # Arc: 14.97y # First observation: 2001/03/26 # Last observation: 2016/03/13 # Chi-squared of fit: 35.44 DOF: 20 RMS: 0.29 # Min/Max residuals: -0.53 0.57 # Exact a, adot, b, bdot, g, gdot: 1.394482E-05 2.232405E-02 -4.268908E-06 -7.899798E-03 2.375741E-02 1.692716E-03 # Covariance matrix: 4.3612E-13 -1.2037E-13 -2.0840E-14 3.0918E-14 3.5912E-13 -2.5320E-13 -1.2037E-13 2.4381E-13 5.3172E-14 -8.4956E-14 8.5047E-14 6.9007E-13 -2.0840E-14 5.3172E-14 1.6224E-13 -3.1220E-14 2.4106E-14 1.5379E-13 3.0918E-14 -8.4956E-14 -3.1220E-14 3.4353E-14 -4.2505E-14 -2.4629E-13 3.5912E-13 8.5047E-14 2.4106E-14 -4.2505E-14 6.9673E-13 3.4179E-13 -2.5320E-13 6.9007E-13 1.5379E-13 -2.4629E-13 3.4179E-13 2.0001E-12 # lat0 lon0 xBary yBary zBary JD0 -1.028030 -160.030390 0.241229 -0.017623 -0.972550 2451994.883983 # Heliocentric elements and errors Epoch: 2451994.5000 = 2001/03/26 Mean Anomaly: 34.70432 +/- 0.033 Argument of Peri: 140.29737 +/- 0.042 Long of Asc Node: 16.81181 +/- 0.000 Inclination: 19.54449 +/- 0.000 Eccentricity: 0.10931358 +/- 0.0001 Semi-Major Axis: 47.08129097 +/- 0.0074 Time of Perihelion: 2440619.4833 +/- 11.1 Perihelion: 41.93466651 +/- 0.0082 Aphelion: 52.22791543 +/- 0.0095 Period (y) 323.0582 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -40.54739027 +/- 0.0014 Ecliptic Y -14.47387569 +/- 0.0005 Ecliptic Z -0.75534586 +/- 0.0000 Ecliptic XDOT 0.00070232 +/- 0.0000 Ecliptic YDOT -0.00247614 +/- 0.0000 Ecliptic ZDOT -0.00091355 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.05984881 +/- 0.0013 Geocenter to KBO 42.09210417 +/- 0.0015 # Hcoef: 7.86
The following table shows the complete astrometric record for 01FT185. 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 (01FT185) followed by the observatory code and reference code for the source of the astrometry.
2001 03 26.38324 13 12 10.83 -08 45 34.5 24.5R 01FT185 695 Cd1722 2001 03 26.46289 13 12 10.47 -08 45 32.6 01FT185 695 Cd1722 2001 05 22.03645 13 08 12.53 -08 25 36.7 22.9R 01FT185 807 Cd1722 2001 05 22.14626 13 08 12.18 -08 25 35.0 01FT185 807 Cd1722 2001 06 08.99119 13 07 26.32 -08 21 57.4 25.2R 01FT185 304 Cd1722 2001 06 09.04006 13 07 26.20 -08 21 56.9 01FT185 304 Cd1722 2002 04 07.13772 13 15 24.69 -09 35 18.6 22.4R 01FT185 807 Cj8685 2002 04 07.19779 13 15 24.41 -09 35 16.9 01FT185 807 Cj8685 2002 04 08.17414 13 15 19.94 -09 34 55.1 01FT185 807 Cj8685 2003 05 30.01370 13 15 58.69 -10 11 06.4 01FT185 807 Cj8685 2003 05 30.10538 13 15 58.40 -10 11 05.2 01FT185 807 Cj8685 2016 03 13.34818 14 16 03.24 -21 29 29.7 24.5R 01FT185 G37 C~1pPW 2016 03 13.42970 14 16 03.00 -21 29 29.5 01FT185 G37 C~1pPW
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 0.10 0.00 -0.26
2 0.0002 0.00 0.08 0.00 -0.09
3 0.1551 0.00 -0.50 0.00 0.32
4 0.1554 0.00 -0.39 0.00 0.29
5 0.2043 0.00 0.40 0.00 -0.53
6 0.2044 0.00 0.07 0.00 -0.45
7 1.0315 0.00 0.10 0.00 0.23
8 1.0317 0.00 0.10 0.00 0.57
9 1.0343 0.00 0.17 0.00 0.32
10 2.1756 0.00 0.13 0.00 -0.14
11 2.1758 0.00 -0.20 0.00 -0.28
12 14.9650 0.00 -0.25 0.00 0.04
13 14.9652 0.00 0.22 0.00 -0.05
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.
01FT185 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.944 46.944 46.944 ecceobj 0.106 0.106 0.106 incobj 19.571 19.571 19.571 qmin 41.184 41.152 41.201 qmax 53.707 53.738 53.783 amean 47.294 47.294 47.294 amin 46.900 46.910 46.886 amax 47.735 47.731 47.729 emean 0.113 0.113 0.113 emin 0.099 0.100 0.099 emax 0.126 0.126 0.127 imean 19.401 19.401 19.401 imin 19.101 19.108 19.101 imax 19.688 19.688 19.687 excite_mean 0.351 0.351 0.351 fracstop 1.000 1.000 1.000 cjmean 2.986 2.986 2.986 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 179.3 179.1 179.3 kozaiamp 180.0 179.9 180.0