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: 15FN398
# Created Sun Feb 23 02:10:19 2025
# Orbit generated from Bernstein formalism
# Fitting 12 observations of 12
# Arc: 10.93d
# First observation: 2015/03/18
# Last observation: 2015/03/29
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 0.57 DOF: 20 RMS: 0.04
# Min/Max residuals: -0.11 0.09
# Exact a, adot, b, bdot, g, gdot:
1.550275E-05 2.324046E-02 -2.373491E-07 -2.602850E-04 2.400099E-02 0.000000E+00
# Covariance matrix:
3.0463E-11 4.5197E-08 -1.6102E-13 3.6537E-11 7.1919E-09 0.0000E+00
4.5197E-08 6.7486E-05 -2.4037E-10 5.4544E-08 1.0736E-05 0.0000E+00
-1.6102E-13 -2.4037E-10 1.8226E-13 -8.5219E-12 -3.8242E-11 0.0000E+00
3.6537E-11 5.4544E-08 -8.5219E-12 1.2198E-09 8.6777E-09 0.0000E+00
7.1919E-09 1.0736E-05 -3.8242E-11 8.6777E-09 1.7081E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.8193E-04
# lat0 lon0 xBary yBary zBary JD0
1.008339 179.554844 0.037939 0.017574 -0.991275 2457099.989744
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 1.20267 +/- 31.830
Argument of Peri: 121.68254 +/- 98.868
Long of Asc Node: 56.53588 +/- 10.480
Inclination: 1.17382 +/- 0.141
Eccentricity: 0.01778601 +/- 0.5532
Semi-Major Axis: 43.43166903 +/- 22.1485
Time of Perihelion: 2456741.2375 +/- 531974.4
Perihelion: 42.65919279 +/- 32.4109
Aphelion: 44.20414528 +/- 32.9449
Period (y) 286.2319 +/- 218.95
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.65148019 +/- 2.2684
Ecliptic Y 0.36908952 +/- 0.0178
Ecliptic Z 0.73322458 +/- 0.0399
Ecliptic XDOT -0.00002454 +/- 0.0015
Ecliptic YDOT -0.00265678 +/- 0.0008
Ecliptic ZDOT -0.00002960 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.65937889 +/- 2.2680
Geocenter to KBO 41.66495404 +/- 2.2688
# Hcoef: 8.42
The following table shows the complete astrometric record for 15FN398. 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 (15FN398) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.488966 11 59 58.252 +01 06 07.91 24.7r 15FN398 568 C~2TuH 2015 03 18.491879 11 59 58.237 +01 06 07.94 24.7r 15FN398 568 C~2TuH 2015 03 18.518557 11 59 58.123 +01 06 08.77 24.8r 15FN398 568 C~2TuH 2015 03 18.549212 11 59 57.982 +01 06 09.63 24.8r 15FN398 568 C~2TuH 2015 03 20.437180 11 59 49.631 +01 07 03.80 24.4i 15FN398 568 C~2TuH 2015 03 20.440683 11 59 49.613 +01 07 03.87 24.2i 15FN398 568 C~2TuH 2015 03 20.474493 11 59 49.463 +01 07 04.87 24.2i 15FN398 568 C~2TuH 2015 03 20.502393 11 59 49.334 +01 07 05.68 24.4i 15FN398 568 C~2TuH 2015 03 20.518991 11 59 49.258 +01 07 06.12 24.4i 15FN398 568 C~2TuH 2015 03 20.554741 11 59 49.099 +01 07 07.13 24.2i 15FN398 568 C~2TuH 2015 03 29.41284 11 59 10.01 +01 11 19.1 24.2y 15FN398 T09 C~8eRZ 2015 03 29.41554 11 59 10.01 +01 11 19.1 24.2y 15FN398 T09 C~8eRZ
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 -0.04 0.00 0.01
2 0.0000 -0.22 -0.04 -0.06 -0.05
3 0.0001 -2.12 0.02 0.02 0.05
4 0.0002 -4.40 -0.02 -0.03 0.01
5 0.0053 -140.85 0.04 -0.16 0.02
6 0.0053 -141.13 0.02 -0.20 -0.02
7 0.0054 -143.59 0.04 -0.18 0.02
8 0.0055 -145.69 -0.00 -0.21 0.01
9 0.0056 -146.91 -0.01 -0.26 -0.03
10 0.0057 -149.50 0.03 -0.28 -0.03
11 0.0299 -787.57 -0.11 -2.30 0.00
12 0.0299 -787.57 0.09 -2.30 0.00
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.
15FN398 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0