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: 17FE159
# Created Tue Apr 1 01:11:06 2025
# Orbit generated from Bernstein formalism
# Fitting 17 observations of 17
# Arc: 4.03y
# First observation: 2013/03/14
# Last observation: 2017/03/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000023 0.018727 -0.000001 0.000171 0.021586 0.000000
# Chi-squared of fit: 4.98 DOF: 28 RMS: 0.10
# Min/Max residuals: -0.19 0.31
# Exact a, adot, b, bdot, g, gdot:
1.313049E-05 1.867507E-02 -4.526577E-08 1.703408E-04 2.125724E-02 -6.728015E-05
# Covariance matrix:
4.8886E-13 -3.6301E-13 1.4790E-15 -2.2689E-15 -1.0460E-13 -3.2944E-12
-3.6301E-13 9.4189E-13 -4.2606E-15 6.7420E-15 4.4534E-12 9.9030E-12
1.4790E-15 -4.2606E-15 3.3280E-13 -1.2192E-13 -1.7645E-14 -4.9897E-14
-2.2689E-15 6.7420E-15 -1.2192E-13 6.0306E-14 2.8806E-14 7.8493E-14
-1.0460E-13 4.4534E-12 -1.7645E-14 2.8806E-14 3.6249E-11 4.2785E-11
-3.2944E-12 9.9030E-12 -4.9897E-14 7.8493E-14 4.2785E-11 1.1504E-10
# lat0 lon0 xBary yBary zBary JD0
1.433395 178.017151 0.072959 0.024859 -0.991892 2456365.776868
# Heliocentric elements and errors
Epoch: 2456360.5000 = 2013/03/09
Mean Anomaly: 182.51749 +/- 0.582
Argument of Peri: 247.27463 +/- 0.522
Long of Asc Node: 108.41298 +/- 0.027
Inclination: 1.49855 +/- 0.000
Eccentricity: 0.06117925 +/- 0.0007
Semi-Major Axis: 45.26700506 +/- 0.0433
Time of Perihelion: 2511203.8687 +/- 161.7
Perihelion: 42.49760343 +/- 0.0517
Aphelion: 48.03640669 +/- 0.0560
Period (y) 304.5656 +/- 0.44
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -47.98818118 +/- 0.0133
Ecliptic Y 1.73634205 +/- 0.0005
Ecliptic Z 1.17677847 +/- 0.0003
Ecliptic XDOT -0.00008028 +/- 0.0000
Ecliptic YDOT -0.00240354 +/- 0.0000
Ecliptic ZDOT 0.00002185 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 48.03400071 +/- 0.0133
Geocenter to KBO 47.04279057 +/- 0.0133
# Hcoef: 6.16
The following table shows the complete astrometric record for 17FE159. 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 (17FE159) followed by the observatory code and reference code for the source of the astrometry.
2013 03 14.27609 11 55 00.21 +02 06 13.6 22.7R 17FE159 695 C~8ifm 2013 03 14.38612 11 54 59.76 +02 06 16.6 17FE159 695 C~8ifm 2013 03 14.44625 11 54 59.50 +02 06 18.1 17FE159 695 C~8ifm 2015 03 20.440683 12 02 31.596 +01 18 32.66 22.4i 17FE159 568 C~2TuK 2015 03 20.477242 12 02 31.446 +01 18 33.62 22.4i 17FE159 568 C~2TuK 2015 03 20.518991 12 02 31.278 +01 18 34.69 22.4i 17FE159 568 C~2TuK 2015 03 20.554741 12 02 31.130 +01 18 35.68 22.8i 17FE159 568 C~2TuK 2015 03 20.557468 12 02 31.121 +01 18 35.71 22.4i 17FE159 568 C~2TuK 2015 03 25.469173 12 02 11.565 +01 20 43.22 23.8g 17FE159 568 C~2TuK 2015 03 25.497794 12 02 11.451 +01 20 43.94 23.7g 17FE159 568 C~2TuK 2015 03 25.525959 12 02 11.338 +01 20 44.68 23.7g 17FE159 568 C~2TuK 2015 03 29.26281 12 01 56.54 +01 22 20.5 22.4y 17FE159 T09 C~8ifm 2015 03 29.32074 12 01 56.32 +01 22 22.0 22.3y 17FE159 T09 C~8ifm 2015 03 29.41284 12 01 55.95 +01 22 24.2 22.5y 17FE159 T09 C~8ifm 2017 03 23.17431 12 10 13.343 +00 29 36.57 22.9r 17FE159 807 C~2Fai 2017 03 23.24307 12 10 13.087 +00 29 38.60 22.8r 17FE159 807 C~2Fai 2017 03 24.21933 12 10 09.192 +00 30 03.50 22.9r 17FE159 807 C~2Fai
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 0.04
2 0.0003 -7.38 0.03 0.07 0.12
3 0.0005 -11.55 -0.19 -0.11 -0.05
4 2.0155 7350.36 0.02 71.33 0.00
5 2.0156 7347.91 -0.01 71.31 0.00
6 2.0157 7345.17 0.02 71.29 -0.01
7 2.0158 7342.74 -0.05 71.31 0.03
8 2.0158 7342.60 -0.01 71.29 0.00
9 2.0293 7022.43 0.01 71.30 0.02
10 2.0294 7020.57 0.05 71.28 0.01
11 2.0294 7018.72 0.05 71.28 0.03
12 2.0397 6776.74 -0.14 70.69 -0.11
13 2.0398 6773.11 0.01 70.75 -0.02
14 2.0401 6767.14 0.06 70.56 -0.16
15 4.0244 14894.71 -0.16 142.34 -0.05
16 4.0246 14890.36 0.05 142.67 0.31
17 4.0272 14826.53 0.11 142.18 -0.15
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.
17FE159 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.089 45.217 44.961 ecceobj 0.066 0.064 0.068 incobj 1.499 1.499 1.499 qmin 41.622 41.843 41.379 qmax 49.172 49.213 49.105 amean 45.293 45.422 45.148 amin 44.932 45.064 44.804 amax 45.678 45.797 45.538 emean 0.064 0.062 0.066 emin 0.050 0.048 0.053 emax 0.077 0.075 0.079 imean 0.647 0.624 0.670 imin 0.079 0.074 0.084 imax 1.007 0.967 1.066 excite_mean 0.065 0.063 0.067 fracstop 1.000 1.000 1.000 cjmean 3.112 3.114 3.110 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 189.2 187.2 189.9 kozaiamp 179.9 179.9 180.0