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: 00SY370
# Created Wed Dec 25 02:08:06 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 18 observations of 18
# Arc: 20.13y
# First observation: 1999/07/18
# Last observation: 2019/09/04
# Chi-squared of fit: 21.56 DOF: 30 RMS: 0.19
# Min/Max residuals: -0.38 0.38
# Exact a, adot, b, bdot, g, gdot:
1.445493E-05 2.168538E-02 -1.352922E-06 5.832040E-04 2.312710E-02 1.079672E-03
# Covariance matrix:
4.5992E-13 -1.2754E-13 6.5126E-15 -3.4270E-15 2.7683E-13 -2.6825E-13
-1.2754E-13 1.2867E-13 -4.3631E-15 3.4895E-15 1.0558E-13 2.7174E-13
6.5126E-15 -4.3631E-15 1.1485E-13 -8.4566E-15 2.4229E-16 -9.4944E-15
-3.4270E-15 3.4895E-15 -8.4566E-15 2.1921E-15 2.6835E-15 7.4992E-15
2.7683E-13 1.0558E-13 2.4229E-16 2.6835E-15 6.9572E-13 2.0674E-13
-2.6825E-13 2.7174E-13 -9.4944E-15 7.4992E-15 2.0674E-13 5.8405E-13
# lat0 lon0 xBary yBary zBary JD0
1.001971 -57.181386 0.140206 0.017324 -1.004449 2451377.853293
# Heliocentric elements and errors
Epoch: 2451378.5000 = 1999/07/19
Mean Anomaly: 101.05606 +/- 0.141
Argument of Peri: 286.33231 +/- 0.125
Long of Asc Node: 270.33768 +/- 0.002
Inclination: 1.83138 +/- 0.000
Eccentricity: 0.04441860 +/- 0.0000
Semi-Major Axis: 43.79198510 +/- 0.0058
Time of Perihelion: 2421665.2440 +/- 41.9
Perihelion: 41.84680650 +/- 0.0058
Aphelion: 45.73716371 +/- 0.0063
Period (y) 289.8012 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 23.86636742 +/- 0.0008
Ecliptic Y -37.25080918 +/- 0.0013
Ecliptic Z 0.75608319 +/- 0.0000
Ecliptic XDOT 0.00222262 +/- 0.0000
Ecliptic YDOT 0.00129349 +/- 0.0000
Ecliptic ZDOT 0.00007131 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.24698286 +/- 0.0012
Geocenter to KBO 43.23930324 +/- 0.0016
# Hcoef: 7.91
The following table shows the complete astrometric record for 00SY370. 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 (00SY370) followed by the observatory code and reference code for the source of the astrometry.
1999 07 18.35255 20 19 26.97 -18 33 13.3 23.8R 00SY370 568 Ce9199 1999 07 18.37997 20 19 26.84 -18 33 13.7 23.9R 00SY370 568 Ce9199 1999 07 18.40851 20 19 26.70 -18 33 14.2 00SY370 568 Ce9199 2000 09 23.23564 20 20 07.31 -18 29 14.2 24.1R 00SY370 568 Cd2825 2000 09 23.29210 20 20 07.19 -18 29 14.7 24.2R 00SY370 568 Cd2825 2000 09 23.34027 20 20 07.09 -18 29 15.2 24.3R 00SY370 568 Cd2825 2000 09 24.22994 20 20 05.31 -18 29 21.7 23.9R 00SY370 568 Cd2825 2000 09 24.27922 20 20 05.23 -18 29 22.2 24.3R 00SY370 568 Cd2825 2001 08 24.25496 20 26 43.07 -18 04 20.6 23.8R 00SY370 568 Ce3530 2001 08 24.27556 20 26 42.98 -18 04 21.0 24.2R 00SY370 568 Ce3530 2001 08 24.29717 20 26 42.90 -18 04 21.3 24.7R 00SY370 568 Ce3531 2001 11 15.02786 20 25 17.12 -18 10 39.8 24.3R 00SY370 309 Ce3531 2001 11 15.07571 20 25 17.25 -18 10 39.5 24.3R 00SY370 309 Ce3531 2002 08 09.10496 20 32 49.51 -17 40 33.4 23.1R 00SY370 807 Ch1317 2002 08 09.23072 20 32 48.93 -17 40 35.5 00SY370 807 Ch1317 2002 08 10.19410 20 32 44.54 -17 40 51.6 00SY370 807 Ch1317 2019 09 04.158860 21 52 02.812 -11 16 53.74 24.2G 00SY370 G37 C~3cUo 2019 09 04.239700 21 52 02.463 -11 16 55.37 00SY370 G37 C~3cUo
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 -0.01 0.00 0.37
2 0.0001 0.00 -0.01 0.00 0.38
3 0.0002 0.00 -0.09 0.00 0.31
4 1.1852 0.00 -0.04 0.00 -0.19
5 1.1853 0.00 -0.03 0.00 -0.25
6 1.1855 0.00 0.01 0.00 -0.38
7 1.1879 0.00 0.01 0.00 -0.07
8 1.1880 0.00 0.33 0.00 -0.19
9 2.1024 0.00 -0.28 0.00 0.01
10 2.1025 0.00 -0.35 0.00 -0.08
11 2.1025 0.00 -0.21 0.00 -0.07
12 2.3290 0.00 0.19 0.00 -0.02
13 2.3292 0.00 0.28 0.00 -0.11
14 3.0602 0.00 0.16 0.00 0.16
15 3.0606 0.00 0.19 0.00 0.14
16 3.0632 0.00 -0.03 0.00 -0.09
17 20.1309 0.00 0.04 0.00 -0.06
18 20.1311 0.00 -0.08 0.00 0.12
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.
00SY370 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.717 43.717 43.717 ecceobj 0.045 0.045 0.045 incobj 1.833 1.833 1.833 qmin 40.344 40.465 40.360 qmax 47.301 47.284 47.391 amean 43.740 43.728 43.726 amin 43.364 43.345 43.361 amax 44.105 44.109 44.105 emean 0.047 0.045 0.045 emin 0.026 0.022 0.022 emax 0.073 0.073 0.075 imean 3.672 3.668 3.697 imin 2.936 2.934 2.935 imax 4.424 4.439 4.443 excite_mean 0.080 0.079 0.080 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 177.8 178.0 178.7 kozaiamp 179.9 179.9 180.0