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: 15FL400
# Created Sun Feb 23 02:10:19 2025
# Orbit generated from Bernstein formalism
# Fitting 17 observations of 17
# Arc: 65.86d
# First observation: 2015/03/18
# Last observation: 2015/05/23
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.031445 -0.000001 -0.001417 0.025560 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 3.49 DOF: 29 RMS: 0.08
# Min/Max residuals: -0.24 0.18
# Exact a, adot, b, bdot, g, gdot:
1.535598E-05 2.331005E-02 -1.070047E-06 -1.517972E-03 2.427683E-02 1.033204E-02
# Covariance matrix:
5.2948E-13 5.0784E-10 -6.8893E-14 6.4028E-12 7.8795E-11 -5.6001E-09
5.0784E-10 8.6028E-07 -1.1864E-10 1.1038E-08 1.3074E-07 -1.0143E-05
-6.8893E-14 -1.1864E-10 1.4786E-13 -2.3967E-12 -1.8011E-11 1.4041E-09
6.4028E-12 1.1038E-08 -2.3967E-12 1.5892E-10 1.6756E-09 -1.3067E-07
7.8795E-11 1.3074E-07 -1.8011E-11 1.6756E-09 1.9891E-08 -1.5354E-06
-5.6001E-09 -1.0143E-05 1.4041E-09 -1.3067E-07 -1.5354E-06 1.2123E-04
# lat0 lon0 xBary yBary zBary JD0
0.925073 -179.736684 0.050144 0.016124 -0.990758 2457099.992657
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 41.84313 +/- 31.439
Argument of Peri: 75.59578 +/- 6.576
Long of Asc Node: 13.87948 +/- 0.582
Inclination: 3.81279 +/- 0.159
Eccentricity: 0.43896293 +/- 0.4589
Semi-Major Axis: 51.97762984 +/- 23.0976
Time of Perihelion: 2441181.4289 +/- 5516.5
Perihelion: 29.16137732 +/- 27.1436
Aphelion: 74.79388235 +/- 40.9087
Period (y) 374.7425 +/- 249.79
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.17997055 +/- 0.2393
Ecliptic Y -0.14388808 +/- 0.0011
Ecliptic Z 0.66500539 +/- 0.0039
Ecliptic XDOT -0.00115914 +/- 0.0012
Ecliptic YDOT -0.00263993 +/- 0.0001
Ecliptic ZDOT -0.00015227 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.18545782 +/- 0.2392
Geocenter to KBO 41.19154318 +/- 0.2393
# Hcoef: 7.72
The following table shows the complete astrometric record for 15FL400. 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 (15FL400) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.491879 12 02 26.298 +00 44 38.38 24.0r 15FL400 568 C~2TuJ 2015 03 18.549212 12 02 26.039 +00 44 39.99 23.9r 15FL400 568 C~2TuJ 2015 03 18.551388 12 02 26.025 +00 44 40.05 24.0r 15FL400 568 C~2TuJ 2015 03 18.577356 12 02 25.909 +00 44 40.84 23.9r 15FL400 568 C~2TuJ 2015 03 20.440683 12 02 17.534 +00 45 33.76 23.6i 15FL400 568 C~2TuJ 2015 03 20.463417 12 02 17.430 +00 45 34.39 23.5i 15FL400 568 C~2TuJ 2015 03 20.477242 12 02 17.364 +00 45 34.81 23.5i 15FL400 568 C~2TuJ 2015 03 20.557468 12 02 16.995 +00 45 37.07 23.5i 15FL400 568 C~2TuJ 2015 03 29.29907 12 01 37.75 +00 49 43.3 23.1y 15FL400 T09 C~8eRZ 2015 03 29.32074 12 01 37.66 +00 49 44.2 23.6y 15FL400 T09 C~8eRZ 2015 03 29.33991 12 01 37.57 +00 49 44.7 23.6y 15FL400 T09 C~8eRZ 2015 03 29.35897 12 01 37.48 +00 49 45.0 23.4y 15FL400 T09 C~8eRZ 2015 03 29.42373 12 01 37.19 +00 49 47.0 23.4y 15FL400 T09 C~8eRZ 2015 05 23.26835 11 58 32.45 +01 08 13.8 23.9z 15FL400 T09 C~8eRZ 2015 05 23.28588 11 58 32.43 +01 08 13.6 24.6z 15FL400 T09 C~8eRZ 2015 05 23.30346 11 58 32.39 +01 08 13.9 23.9z 15FL400 T09 C~8eRZ 2015 05 23.35585 11 58 32.30 +01 08 14.3 24.1z 15FL400 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 0.02
2 0.0002 -4.20 0.02 -0.07 0.02
3 0.0002 -4.42 -0.04 -0.10 -0.01
4 0.0002 -6.33 -0.03 -0.06 0.06
5 0.0053 -142.63 0.05 -1.48 0.06
6 0.0054 -144.31 0.06 -1.52 0.05
7 0.0054 -145.39 0.01 -1.53 0.06
8 0.0057 -151.36 -0.00 -1.66 0.03
9 0.0296 -789.36 0.01 -9.89 -0.24
10 0.0296 -790.96 -0.00 -9.60 0.08
11 0.0297 -792.39 -0.03 -9.68 0.03
12 0.0298 -793.75 0.01 -9.94 -0.20
13 0.0299 -798.54 -0.02 -9.84 0.00
14 0.1801 -3781.29 -0.14 -96.12 0.18
15 0.1801 -3781.48 0.15 -96.42 -0.08
16 0.1802 -3782.15 -0.03 -96.38 -0.00
17 0.1803 -3783.55 0.01 -96.55 -0.04
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.
15FL400 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