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: 437871 # Created Sun Dec 22 02:07:06 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 13.18y # First observation: 2001/03/26 # Last observation: 2014/05/30 # Chi-squared of fit: 47.39 DOF: 52 RMS: 0.23 # Min/Max residuals: -0.48 0.57 # Exact a, adot, b, bdot, g, gdot: 1.406711E-05 2.492343E-02 6.024290E-06 9.899161E-03 2.593322E-02 -3.902059E-04 # 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 -1.953665 -161.152639 0.222367 -0.033483 -0.976616 2451994.870063 # Heliocentric elements and errors Epoch: 2451994.5000 = 2001/03/26 Mean Anomaly: 346.75535 +/- 0.000 Argument of Peri: 10.09330 +/- 0.000 Long of Asc Node: 203.29553 +/- 0.000 Inclination: 21.78159 +/- 0.000 Eccentricity: 0.06945068 +/- 0.0000 Semi-Major Axis: 42.38597879 +/- 0.0000 Time of Perihelion: 2455702.7552 +/- 0.0 Perihelion: 39.44224361 +/- 0.0000 Aphelion: 45.32971398 +/- 0.0000 Period (y) 275.9571 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.46437305 +/- 0.0000 Ecliptic Y -12.55022110 +/- 0.0000 Ecliptic Z -1.31431669 +/- 0.0000 Ecliptic XDOT 0.00084692 +/- 0.0000 Ecliptic YDOT -0.00248549 +/- 0.0000 Ecliptic ZDOT 0.00104607 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.53246229 +/- 0.0000 Geocenter to KBO 38.56061589 +/- 0.0000 # Hcoef: 7.31
The following table shows the complete astrometric record for 437871. 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 (437871) followed by the observatory code and reference code for the source of the astrometry.
2001 03 26.36932 13 06 33.25 -09 11 23.1 24.4R 437871 695 Cd1722 2001 03 26.44900 13 06 32.88 -09 11 20.4 437871 695 Cd1722 2001 04 29.34399 13 03 56.53 -08 51 52.1 22.8R 437871 695 Cd1722 2001 04 29.39061 13 03 56.33 -08 51 50.6 437871 695 Cd1722 2001 05 29.20910 13 02 11.26 -08 37 10.8 22.9R 437871 695 Cd1722 2001 05 29.31203 13 02 11.04 -08 37 08.7 437871 695 Cd1722 2002 04 06.17214 13 11 57.51 -09 06 24.2 21.9R 437871 807 Cf4616 2002 04 06.30697 13 11 56.85 -09 06 19.7 437871 807 Cf4616 2002 04 07.19384 13 11 52.68 -09 05 49.5 437871 807 Cf4616 2002 04 08.05922 13 11 48.58 -09 05 19.2 21.8R 437871 807 Cf4616 2002 04 09.05013 13 11 43.90 -09 04 44.9 437871 807 Cf4616 2002 04 09.15254 13 11 43.41 -09 04 41.3 437871 807 Cf4616 2002 04 10.35428 13 11 37.76 -09 04 00.2 22.2R 437871 695 Cg5748 2002 04 10.40782 13 11 37.49 -09 03 58.3 437871 695 Cg5748 2003 04 30.40524 13 16 20.40 -08 53 28.1 23.3R 437871 568 Ch9859 2003 04 30.46891 13 16 20.09 -08 53 26.0 437871 568 Ch9859 2003 05 01.32318 13 16 16.37 -08 52 58.2 437871 568 Ch9859 2005 03 09.38741 13 32 39.40 -09 21 35.9 22.9R 437871 695 Cn0174 2005 03 09.47849 13 32 39.07 -09 21 33.5 437871 695 Cn0174 2005 03 10.41115 13 32 35.67 -09 21 08.0 437871 695 Cn0174 2005 05 09.16897 13 28 09.30 -08 49 05.9 22.2R 437871 807 Cn5308 2005 05 10.16326 13 28 05.15 -08 48 36.2 437871 807 Cn5308 2005 05 10.24777 13 28 04.79 -08 48 33.6 437871 807 Cn5308 2014 04 23.20382 14 25 38.78 -08 39 38.5 437871 W84 C~1TiY 2014 04 24.22591 14 25 33.83 -08 39 06.7 24.8V 437871 W84 C~1TiY 2014 04 25.22586 14 25 29.03 -08 38 36.2 437871 W84 C~1TiY 2014 04 26.19223 14 25 24.36 -08 38 06.6 437871 W84 C~1TiY 2014 05 30.22184 14 22 48.83 -08 23 01.6 23.2R 437871 695 C~1LJ2 2014 05 30.35851 14 22 48.30 -08 22 58.7 437871 695 C~1LJ2
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 0.22 0.00 -0.09
2 0.0002 0.00 0.24 0.00 -0.04
3 0.0930 0.00 -0.30 0.00 0.24
4 0.0931 0.00 -0.25 0.00 0.17
5 0.1748 0.00 -0.39 0.00 0.57
6 0.1751 0.00 0.36 0.00 0.18
7 1.0289 0.00 0.28 0.00 0.11
8 1.0293 0.00 0.08 0.00 -0.03
9 1.0317 0.00 0.16 0.00 -0.38
10 1.0341 0.00 -0.20 0.00 0.04
11 1.0368 0.00 -0.18 0.00 0.08
12 1.0371 0.00 -0.17 0.00 0.15
13 1.0403 0.00 0.36 0.00 -0.15
14 1.0405 0.00 0.17 0.00 -0.11
15 2.0946 0.00 0.03 0.00 -0.19
16 2.0947 0.00 -0.33 0.00 -0.19
17 2.0971 0.00 -0.01 0.00 -0.48
18 3.9535 0.00 -0.21 0.00 0.27
19 3.9538 0.00 -0.11 0.00 0.17
20 3.9563 0.00 -0.12 0.00 -0.02
21 4.1199 0.00 0.09 0.00 0.14
22 4.1226 0.00 0.15 0.00 -0.32
23 4.1229 0.00 0.10 0.00 -0.28
24 13.0755 0.00 0.37 0.00 -0.17
25 13.0783 0.00 -0.21 0.00 0.23
26 13.0811 0.00 -0.02 0.00 0.12
27 13.0837 0.00 -0.23 0.00 0.25
28 13.1769 0.00 -0.14 0.00 -0.12
29 13.1772 0.00 0.25 0.00 -0.13
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.
437871 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.277 42.276 42.277 ecceobj 0.068 0.068 0.068 incobj 21.802 21.802 21.802 qmin 38.443 38.457 38.448 qmax 46.949 46.944 46.952 amean 42.583 42.583 42.583 amin 42.250 42.252 42.253 amax 42.935 42.935 42.935 emean 0.079 0.079 0.079 emin 0.064 0.064 0.064 emax 0.094 0.094 0.094 imean 22.164 22.164 22.164 imin 21.747 21.749 21.745 imax 22.580 22.582 22.579 excite_mean 0.385 0.385 0.385 fracstop 1.000 1.000 1.000 cjmean 2.903 2.903 2.903 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 173.2 173.2 173.2 kozaiamp 180.0 180.0 180.0