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: 52747
# Created Mon Nov 25 02:06:43 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 22 observations of 22
# Arc: 6.08y
# First observation: 1998/04/29
# Last observation: 2004/05/27
# Chi-squared of fit: 41.84 DOF: 38 RMS: 0.24
# Min/Max residuals: -0.65 0.48
# Exact a, adot, b, bdot, g, gdot:
1.487077E-05 2.256752E-02 -8.766700E-07 -2.142331E-04 2.348377E-02 -1.088291E-03
# 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
0.052694 -121.015997 0.352460 0.000635 -0.948636 2450933.001601
# Heliocentric elements and errors
Epoch: 2450932.5000 = 1998/04/29
Mean Anomaly: 291.07930 +/- 0.000
Argument of Peri: 250.35813 +/- 0.000
Long of Asc Node: 63.92268 +/- 0.000
Inclination: 0.54852 +/- 0.000
Eccentricity: 0.06224132 +/- 0.0000
Semi-Major Axis: 44.36935843 +/- 0.0000
Time of Perihelion: 2471599.1625 +/- 0.0
Perihelion: 41.60775106 +/- 0.0000
Aphelion: 47.13096581 +/- 0.0000
Period (y) 295.5513 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.72392512 +/- 0.0000
Ecliptic Y -37.12851418 +/- 0.0000
Ecliptic Z 0.03915251 +/- 0.0000
Ecliptic XDOT 0.00232216 +/- 0.0000
Ecliptic YDOT -0.00123826 +/- 0.0000
Ecliptic ZDOT -0.00002518 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.53054334 +/- 0.0000
Geocenter to KBO 42.58266546 +/- 0.0000
# Hcoef: 7.78
The following table shows the complete astrometric record for 52747. 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 (52747) followed by the observatory code and reference code for the source of the astrometry.
1998 04 29.50087 15 47 05.94 -19 52 50.0 24.0R 52747 568 Ca4825 1998 04 29.54120 15 47 05.75 -19 52 49.4 24.0R 52747 568 Ca4825 1998 04 29.58028 15 47 05.59 -19 52 48.6 24.0R 52747 568 Ca4825 1998 05 02.47942 15 46 52.45 -19 52 07.8 24.0R 52747 568 Ca4825 1998 05 02.49102 15 46 52.40 -19 52 07.7 24.0R 52747 568 Ca4825 1998 05 02.50262 15 46 52.36 -19 52 07.9 24.0R 52747 568 Ca4825 1998 05 24.39492 15 45 08.34 -19 46 39.7 24.0R 52747 568 Ca4825 1998 05 24.40657 15 45 08.27 -19 46 39.5 24.0R 52747 568 Ca4825 1998 05 24.41822 15 45 08.21 -19 46 39.2 24.0R 52747 568 Ca4825 1999 03 14.63032 15 54 49.58 -20 17 10.8 24.0R 52747 568 Ca4825 1999 03 15.61936 15 54 48.28 -20 17 07.3 24.0R 52747 568 Ca4825 2000 05 07.50819 15 57 12.34 -20 25 01.6 24.1R 52747 568 Cb5091 2000 05 07.55043 15 57 12.15 -20 25 00.7 24.2R 52747 568 Cb5091 2001 05 22.40868 16 01 27.24 -20 37 58.8 52747 568 Cd2198 2001 05 22.47482 16 01 26.91 -20 37 57.8 52747 568 Cd2198 2001 05 23.42222 16 01 22.32 -20 37 44.9 52747 568 Cd2198 2001 05 23.48815 16 01 22.00 -20 37 44.1 52747 568 Cd2198 2002 04 06.27987 16 10 09.22 -21 02 15.1 22.0R 52747 807 Cj9735 2002 04 07.28495 16 10 06.25 -21 02 07.2 22.9R 52747 807 Ch1064 2002 04 07.38104 16 10 05.94 -21 02 06.6 52747 807 Ch1064 2004 05 27.23352 16 17 31.37 -21 22 28.3 23.8R 52747 304 Ck8881 2004 05 27.25933 16 17 31.25 -21 22 28.0 52747 304 Ck8881
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 0.13
2 0.0001 0.00 0.01 0.00 0.16
3 0.0002 0.00 0.28 0.00 0.41
4 0.0082 0.00 -0.27 0.00 0.17
5 0.0082 0.00 -0.21 0.00 0.10
6 0.0082 0.00 -0.00 0.00 -0.27
7 0.0682 0.00 0.24 0.00 0.08
8 0.0682 0.00 0.04 0.00 0.10
9 0.0682 0.00 -0.00 0.00 0.23
10 0.8737 0.00 -0.11 0.00 0.06
11 0.8764 0.00 -0.09 0.00 -0.24
12 2.0233 0.00 0.30 0.00 -0.65
13 2.0234 0.00 0.48 0.00 -0.33
14 3.0634 0.00 -0.49 0.00 -0.15
15 3.0636 0.00 -0.51 0.00 -0.05
16 3.0662 0.00 0.02 0.00 -0.08
17 3.0664 0.00 0.14 0.00 -0.18
18 3.9364 0.00 0.03 0.00 -0.21
19 3.9392 0.00 0.09 0.00 0.05
20 3.9394 0.00 -0.12 0.00 -0.10
21 6.0773 0.00 0.03 0.00 0.37
22 6.0774 0.00 0.18 0.00 0.36
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.
52747 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.163 44.163 44.163 ecceobj 0.059 0.059 0.059 incobj 0.546 0.546 0.546 qmin 41.078 41.090 41.083 qmax 48.015 48.006 48.027 amean 44.454 44.454 44.454 amin 44.103 44.103 44.109 amax 44.820 44.820 44.822 emean 0.057 0.057 0.057 emin 0.042 0.042 0.042 emax 0.071 0.071 0.072 imean 1.395 1.395 1.395 imin 0.728 0.728 0.728 imax 1.877 1.876 1.877 excite_mean 0.062 0.062 0.062 fracstop 1.000 1.000 1.000 cjmean 3.102 3.102 3.102 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 190.6 190.5 190.6 kozaiamp 180.0 180.0 179.9