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: 13SU112
# Created Sun Apr 21 01:15:13 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 14 observations of 14
# Arc: 8.10y
# First observation: 2013/09/30
# Last observation: 2021/11/05
# Chi-squared of fit: 6.79 DOF: 22 RMS: 0.12
# Min/Max residuals: -0.20 0.33
# Exact a, adot, b, bdot, g, gdot:
1.421476E-05 2.244995E-02 -2.837540E-07 -5.018778E-04 2.441048E-02 4.361338E-03
# Covariance matrix:
3.3248E-13 -1.7721E-13 -2.3777E-15 3.7144E-15 1.5629E-13 -8.9868E-13
-1.7721E-13 2.1943E-13 3.6254E-15 -5.6132E-15 -2.2578E-13 1.3597E-12
-2.3777E-15 3.6254E-15 2.4222E-13 -4.0551E-14 -2.8057E-15 2.3547E-14
3.7144E-15 -5.6132E-15 -4.0551E-14 1.2315E-14 6.9678E-15 -3.6999E-14
1.5629E-13 -2.2578E-13 -2.8057E-15 6.9678E-15 8.2618E-13 -1.6010E-12
-8.9868E-13 1.3597E-12 2.3547E-14 -3.6999E-14 -1.6010E-12 8.9447E-12
# lat0 lon0 xBary yBary zBary JD0
2.071441 -2.544573 -0.162525 0.035823 -0.987720 2456565.631898
# Heliocentric elements and errors
Epoch: 2456566.5000 = 2013/10/01
Mean Anomaly: 98.71111 +/- 0.070
Argument of Peri: 1.75773 +/- 0.047
Long of Asc Node: 235.48902 +/- 0.006
Inclination: 2.38967 +/- 0.000
Eccentricity: 0.20385592 +/- 0.0001
Semi-Major Axis: 39.25546657 +/- 0.0074
Time of Perihelion: 2431933.7910 +/- 18.8
Perihelion: 31.25300715 +/- 0.0065
Aphelion: 47.25792598 +/- 0.0093
Period (y) 245.9566 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.89310369 +/- 0.0015
Ecliptic Y -1.69605093 +/- 0.0001
Ecliptic Z 1.48071190 +/- 0.0001
Ecliptic XDOT 0.00059601 +/- 0.0000
Ecliptic YDOT 0.00249235 +/- 0.0000
Ecliptic ZDOT -0.00003843 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.95344416 +/- 0.0015
Geocenter to KBO 40.96594305 +/- 0.0015
# Hcoef: 7.65
The following table shows the complete astrometric record for 13SU112. 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 (13SU112) followed by the observatory code and reference code for the source of the astrometry.
2013 09 30.13112 23 47 22.061 +00 53 20.23 24.2r 13SU112 W84 C~52RV 2013 09 30.13557 23 47 22.037 +00 53 20.31 23.3i 13SU112 W84 C~52RV 2013 10 12.11037 23 46 30.940 +00 47 33.12 23.3i 13SU112 W84 C~52RV 2013 10 28.04236 23 45 31.500 +00 40 34.82 24.1r 13SU112 W84 C~52RV 2013 11 08.12633 23 44 58.562 +00 36 31.57 23.5r 13SU112 W84 C~52RV 2016 08 31.25387 00 03 36.710 +02 33 03.47 23.3i 13SU112 W84 C~52RV 2017 08 28.26066 00 08 25.934 +03 02 14.80 23.5i 13SU112 W84 C~52RV 2017 08 28.26204 00 08 25.946 +03 02 14.94 24.5r 13SU112 W84 C~52RV 2017 08 28.26341 00 08 25.958 +03 02 14.70 24.8g 13SU112 W84 C~52RV 2017 09 27.18554 00 06 18.448 +02 48 36.76 23.6r 13SU112 W84 C~52RV 2017 11 08.07280 00 03 35.344 +02 29 51.39 23.8r 13SU112 W84 C~52RV 2021 11 05.105040 00 21 52.806 +04 20 05.43 23.9G 13SU112 G37 C~5BQk 2021 11 05.154700 00 21 52.625 +04 20 04.34 13SU112 G37 C~5BQk 2021 11 05.203420 00 21 52.456 +04 20 03.25 13SU112 G37 C~5BQk
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 0.07 0.00 0.02
2 0.0000 0.00 0.00 0.00 0.23
3 0.0328 0.00 -0.14 0.00 -0.01
4 0.0764 0.00 0.16 0.00 0.01
5 0.1068 0.00 -0.08 0.00 -0.20
6 2.9189 0.00 -0.14 0.00 0.05
7 3.9100 0.00 -0.19 0.00 -0.11
8 3.9100 0.00 0.07 0.00 0.07
9 3.9100 0.00 0.33 0.00 -0.14
10 3.9919 0.00 -0.07 0.00 -0.04
11 4.1066 0.00 0.07 0.00 0.06
12 8.0985 0.00 0.10 0.00 -0.06
13 8.0986 0.00 -0.07 0.00 0.03
14 8.0988 0.00 -0.09 0.00 0.09
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.
13SU112 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.448 39.449 39.448 ecceobj 0.203 0.203 0.203 incobj 2.390 2.390 2.390 qmin 30.198 30.178 30.197 qmax 49.366 49.303 49.383 amean 39.456 39.456 39.456 amin 38.974 38.966 38.965 amax 40.036 40.036 40.036 emean 0.215 0.215 0.215 emin 0.195 0.195 0.195 emax 0.235 0.234 0.235 imean 3.724 3.724 3.724 imin 2.984 2.995 2.985 imax 4.746 4.747 4.746 excite_mean 0.225 0.225 0.225 fracstop 1.000 1.000 1.000 cjmean 2.994 2.994 2.994 libcent 0 180.2 180.0 180.7 libamp 0 101.1 101.6 101.7 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 194.7 194.3 194.7 kozaiamp 180.0 180.0 180.0