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: 17BS244
# Created Sun Nov 24 02:10:47 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 19 observations of 19
# Arc: 10.66y
# First observation: 2006/06/26
# Last observation: 2017/02/23
# Chi-squared of fit: 4.31 DOF: 32 RMS: 0.08
# Min/Max residuals: -0.25 0.15
# Exact a, adot, b, bdot, g, gdot:
1.491611E-05 2.111211E-02 3.905637E-07 1.196864E-03 2.248736E-02 6.974747E-04
# Covariance matrix:
7.3430E-13 -1.3230E-13 3.9686E-16 -3.5238E-15 -6.3431E-14 -2.7668E-13
-1.3230E-13 1.7782E-12 -1.2224E-14 1.0416E-13 3.0048E-12 8.6054E-12
3.9686E-16 -1.2224E-14 7.2706E-13 -7.0712E-14 -2.1017E-14 -5.9574E-14
-3.5238E-15 1.0416E-13 -7.0712E-14 1.3613E-14 1.7792E-13 5.0693E-13
-6.3431E-14 3.0048E-12 -2.1017E-14 1.7792E-13 5.4474E-12 1.4818E-11
-2.7668E-13 8.6054E-12 -5.9574E-14 5.0693E-13 1.4818E-11 4.1953E-11
# lat0 lon0 xBary yBary zBary JD0
2.604995 171.407096 -0.986673 -0.010466 0.231775 2453912.764043
# Heliocentric elements and errors
Epoch: 2453912.5000 = 2006/06/26
Mean Anomaly: 91.56191 +/- 0.215
Argument of Peri: 301.76311 +/- 0.178
Long of Asc Node: 133.33071 +/- 0.003
Inclination: 4.12359 +/- 0.000
Eccentricity: 0.05352016 +/- 0.0003
Semi-Major Axis: 44.06157250 +/- 0.0122
Time of Perihelion: 2426741.8054 +/- 64.9
Perihelion: 41.70339023 +/- 0.0181
Aphelion: 46.41975477 +/- 0.0190
Period (y) 292.4814 +/- 0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.84618247 +/- 0.0046
Ecliptic Y 5.62328282 +/- 0.0007
Ecliptic Z 2.02119094 +/- 0.0002
Ecliptic XDOT -0.00045717 +/- 0.0000
Ecliptic YDOT -0.00253514 +/- 0.0000
Ecliptic ZDOT 0.00014939 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.25145331 +/- 0.0045
Geocenter to KBO 44.46944677 +/- 0.0046
# Hcoef: 8.02
The following table shows the complete astrometric record for 17BS244. 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 (17BS244) followed by the observatory code and reference code for the source of the astrometry.
2006 06 26.263289 11 32 33.17 +05 48 03.1 17BS244 T09 C~89UU 2006 06 26.265423 11 32 33.17 +05 48 02.9 17BS244 T09 C~89UU 2016 04 04.35736 12 20 40.23 +01 20 29.0 25.7g 17BS244 T09 C~8COq 2016 04 04.37436 12 20 40.16 +01 20 29.3 25.8g 17BS244 T09 C~8COq 2016 04 04.39588 12 20 40.06 +01 20 30.1 25.4g 17BS244 T09 C~8COq 2016 06 05.317193 12 17 41.46 +01 37 15.8 17BS244 T09 C~89UU 2016 06 05.330622 12 17 41.45 +01 37 15.9 17BS244 T09 C~89UU 2017 01 23.62773 12 29 11.08 +00 25 40.7 23.9i 17BS244 T09 C~89UU 2017 01 23.63574 12 29 11.07 +00 25 40.9 24.1i 17BS244 T09 C~89UU 2017 01 23.64112 12 29 11.06 +00 25 40.9 23.9i 17BS244 T09 C~89UU 2017 01 23.64921 12 29 11.05 +00 25 40.7 24.1i 17BS244 T09 C~89UU 2017 01 23.65460 12 29 11.05 +00 25 41.0 24.2i 17BS244 T09 C~89UU 2017 01 28.60612 12 29 03.18 +00 26 56.5 24.7z 17BS244 T09 C~89UU 2017 01 28.61148 12 29 03.17 +00 26 56.5 24.2z 17BS244 T09 C~89UU 2017 01 28.63649 12 29 03.12 +00 26 57.0 24.1z 17BS244 T09 C~89UU 2017 01 28.63916 12 29 03.12 +00 26 57.0 24.0z 17BS244 T09 C~89UU 2017 02 01.648917 12 28 55.38 +00 28 06.2 17BS244 T09 C~89UU 2017 02 01.659769 12 28 55.36 +00 28 06.4 17BS244 T09 C~89UU 2017 02 23.616551 12 27 53.91 +00 36 11.7 17BS244 T09 C~89UU
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 0.02 0.00 0.09
2 0.0000 0.00 -0.03 0.00 -0.08
3 9.7744 0.00 -0.00 0.00 -0.02
4 9.7744 0.00 0.03 0.00 -0.18
5 9.7745 0.00 -0.10 0.00 0.05
6 9.9440 0.00 -0.03 0.00 -0.00
7 9.9441 0.00 0.02 0.00 0.07
8 10.5801 0.00 0.00 0.00 0.06
9 10.5801 0.00 0.03 0.00 0.14
10 10.5801 0.00 -0.00 0.00 0.07
11 10.5801 0.00 0.03 0.00 -0.25
12 10.5801 0.00 0.15 0.00 -0.02
13 10.5937 0.00 -0.10 0.00 0.07
14 10.5937 0.00 -0.10 0.00 -0.02
15 10.5938 0.00 -0.15 0.00 0.07
16 10.5938 0.00 -0.08 0.00 0.03
17 10.6048 0.00 0.07 0.00 0.02
18 10.6048 0.00 0.12 0.00 0.02
19 10.6649 0.00 -0.01 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.