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: 15FA432
# Created Wed May 8 01:17:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 8.98y
# First observation: 2015/03/17
# Last observation: 2024/03/08
# Chi-squared of fit: 49.08 DOF: 34 RMS: 0.28
# Min/Max residuals: -0.76 0.88
# Exact a, adot, b, bdot, g, gdot:
1.260661E-05 1.587019E-02 3.328388E-06 6.862581E-04 1.935657E-02 -5.328303E-04
# Covariance matrix:
4.8831E-13 -1.4489E-13 3.8598E-15 -3.9814E-15 -1.1841E-13 -6.3501E-13
-1.4489E-13 1.0665E-13 -4.1382E-15 4.1746E-15 4.3321E-14 7.1249E-13
3.8598E-15 -4.1382E-15 3.8533E-13 -5.2839E-14 -1.5541E-15 -3.0420E-14
-3.9814E-15 4.1746E-15 -5.2839E-14 9.4288E-15 1.9957E-15 3.0468E-14
-1.1841E-13 4.3321E-14 -1.5541E-15 1.9957E-15 3.9746E-13 1.2318E-13
-6.3501E-13 7.1249E-13 -3.0420E-14 3.0468E-14 1.2318E-13 5.3114E-12
# lat0 lon0 xBary yBary zBary JD0
6.933262 -177.551708 0.107729 0.119160 -0.978732 2457098.839188
# Heliocentric elements and errors
Epoch: 2457098.5000 = 2015/03/17
Mean Anomaly: 201.23837 +/- 0.071
Argument of Peri: 232.68174 +/- 0.066
Long of Asc Node: 112.34478 +/- 0.003
Inclination: 7.23630 +/- 0.000
Eccentricity: 0.10225623 +/- 0.0001
Semi-Major Axis: 48.01071244 +/- 0.0052
Time of Perihelion: 2510684.1743 +/- 26.5
Perihelion: 43.10131808 +/- 0.0068
Aphelion: 52.92010679 +/- 0.0076
Period (y) 332.6714 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -52.23019419 +/- 0.0017
Ecliptic Y -2.12544578 +/- 0.0001
Ecliptic Z 6.23646214 +/- 0.0002
Ecliptic XDOT 0.00017891 +/- 0.0000
Ecliptic YDOT -0.00224475 +/- 0.0000
Ecliptic ZDOT 0.00008735 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 52.64415032 +/- 0.0017
Geocenter to KBO 51.66210636 +/- 0.0017
# Hcoef: 6.87
The following table shows the complete astrometric record for 15FA432. 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 (15FA432) followed by the observatory code and reference code for the source of the astrometry.
2015 03 17.33841 12 20 02.112 +05 23 13.58 24. r 15FA432 568 C~444Y 2015 03 17.44084 12 20 01.730 +05 23 15.94 15FA432 568 C~444Y 2015 03 17.59807 12 20 01.147 +05 23 20.01 15FA432 568 C~444Y 2015 04 18.09628 12 18 08.201 +05 35 06.40 15FA432 304 C~444Y 2015 04 18.21231 12 18 07.801 +05 35 08.20 23.9r 15FA432 304 C~444Y 2015 04 20.21468 12 18 01.170 +05 35 44.18 15FA432 304 C~444Y 2020 02 27.23493 12 38 09.58 +03 36 14.6 23.9r 15FA432 W84 C~7xQW 2020 02 27.28473 12 38 09.43 +03 36 15.7 15FA432 W84 C~7xQW 2020 02 27.38435 12 38 09.12 +03 36 18.2 15FA432 W84 C~7xQW 2020 02 28.29501 12 38 06.36 +03 36 40.5 15FA432 W84 C~7xQW 2020 02 28.34470 12 38 06.22 +03 36 41.6 15FA432 W84 C~7xQW 2020 02 28.39440 12 38 06.07 +03 36 42.9 15FA432 W84 C~7xQW 2023 03 21.37054 12 47 09.010 +02 45 20.81 24.0r 15FA432 568 C~7xQW 2023 03 21.58822 12 47 08.225 +02 45 26.15 23.9r 15FA432 568 C~7xQW 2023 05 16.05219 12 44 00.953 +03 03 12.51 24.0r 15FA432 304 C~7xQW 2023 05 23.21331 12 43 43.986 +03 04 13.73 15FA432 G37 C~7xQW 2023 05 23.22071 12 43 43.975 +03 04 13.79 15FA432 G37 C~7xQW 2023 05 24.20806 12 43 41.854 +03 04 20.47 15FA432 G37 C~7xQW 2024 03 07.28974 12 51 19.555 +02 19 36.10 24.1r 15FA432 304 C~7xQW 2024 03 08.29865 12 51 16.294 +02 20 00.88 24.0r 15FA432 304 C~7xQW
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 -0.16 0.00 -0.55
2 0.0003 0.00 -0.24 0.00 -0.76
3 0.0007 0.00 -0.31 0.00 -0.63
4 0.0869 0.00 0.26 0.00 0.88
5 0.0873 0.00 0.18 0.00 0.55
6 0.0927 0.00 0.18 0.00 0.37
7 4.9498 0.00 -0.01 0.00 0.14
8 4.9499 0.00 0.03 0.00 0.02
9 4.9502 0.00 -0.03 0.00 0.09
10 4.9527 0.00 -0.13 0.00 0.11
11 4.9528 0.00 0.09 0.00 -0.00
12 4.9529 0.00 0.16 0.00 0.08
13 8.0110 0.00 -0.01 0.00 -0.00
14 8.0116 0.00 0.13 0.00 -0.09
15 8.1635 0.00 0.10 0.00 0.02
16 8.1831 0.00 -0.08 0.00 -0.04
17 8.1831 0.00 0.00 0.00 -0.03
18 8.1858 0.00 -0.02 0.00 -0.05
19 8.9745 0.00 -0.09 0.00 0.04
20 8.9773 0.00 -0.02 0.00 -0.16
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.
15FA432 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.588 47.588 47.588 ecceobj 0.112 0.112 0.112 incobj 7.240 7.240 7.240 qmin 41.251 41.252 41.250 qmax 54.913 54.913 54.913 amean 47.797 47.797 47.797 amin 47.297 47.297 47.296 amax 48.328 48.329 48.327 emean 0.107 0.107 0.107 emin 0.078 0.078 0.078 emax 0.136 0.136 0.136 imean 5.580 5.580 5.579 imin 4.884 4.884 4.884 imax 6.406 6.406 6.406 excite_mean 0.145 0.145 0.145 fracstop 1.000 1.000 1.000 cjmean 3.123 3.123 3.123 libcent 0 180.8 180.5 181.0 libamp 0 137.1 136.8 137.5 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 125.8 125.8 125.8 kozaiamp 94.9 94.9 94.9