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: 15FD562 # Created Mon Jul 7 01:10:33 2025 # Orbit generated from Bernstein formalism # Fitting 21 observations of 21 # Arc: 123.86d # First observation: 2015/01/17 # Last observation: 2015/05/21 Preliminary a, adot, b, bdot, g, gdot: -0.000029 0.032970 0.000070 0.000144 0.026630 0.000000 # Chi-squared of fit: 17.14 DOF: 36 RMS: 0.16 # Min/Max residuals: -0.56 0.34 # Exact a, adot, b, bdot, g, gdot: 1.430782E-05 2.508622E-02 1.557797E-06 8.411082E-04 2.532973E-02 2.896881E-03 # Covariance matrix: 2.7027E-13 -1.9166E-12 -1.1457E-14 1.4832E-13 1.8605E-13 6.4036E-11 -1.9166E-12 8.4835E-10 7.5755E-12 -7.9581E-11 9.1107E-11 -1.3465E-08 -1.1457E-14 7.5755E-12 2.6332E-13 -1.5003E-12 8.1290E-13 -1.2175E-10 1.4832E-13 -7.9581E-11 -1.5003E-12 1.2466E-11 -8.4223E-12 1.2964E-09 1.8605E-13 9.1107E-11 8.1290E-13 -8.4223E-12 1.1135E-11 -1.2617E-09 6.4036E-11 -1.3465E-08 -1.2175E-10 1.2964E-09 -1.2617E-09 2.4371E-07 # lat0 lon0 xBary yBary zBary JD0 -9.918463 152.626248 0.576982 -0.136669 -0.782576 2457039.933458 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 72.99731 +/- 0.443 Argument of Peri: 195.50726 +/- 1.768 Long of Asc Node: 231.50861 +/- 0.039 Inclination: 9.87769 +/- 0.001 Eccentricity: 0.10256194 +/- 0.0195 Semi-Major Axis: 41.08782090 +/- 0.1188 Time of Perihelion: 2437524.3111 +/- 82.8 Perihelion: 36.87377442 +/- 0.8096 Aphelion: 45.30186738 +/- 0.8132 Period (y) 263.3770 +/- 1.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -34.97800619 +/- 0.0045 Ecliptic Y 18.75891542 +/- 0.0024 Ecliptic Z -6.80014280 +/- 0.0009 Ecliptic XDOT -0.00153842 +/- 0.0000 Ecliptic YDOT -0.00226424 +/- 0.0000 Ecliptic ZDOT 0.00003572 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.26909195 +/- 0.0041 Geocenter to KBO 39.47929972 +/- 0.0052 # Hcoef: 10.00
The following table shows the complete astrometric record for 15FD562. 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 (15FD562) followed by the observatory code and reference code for the source of the astrometry.
2015 01 17.43268 10 04 09.88 +01 16 04.7 25.6i 15FD562 T09 C~8vFY 2015 01 17.43723 10 04 09.84 +01 16 05.1 25.9i 15FD562 T09 C~8vFY 2015 01 17.44180 10 04 09.84 +01 16 05.1 25.2i 15FD562 T09 C~8vFY 2015 01 21.57962 10 03 53.11 +01 17 02.8 25.8i 15FD562 T09 C~8vFY 2015 01 21.60626 10 03 53.01 +01 17 03.2 25.8i 15FD562 T09 C~8vFY 2015 01 21.63213 10 03 52.86 +01 17 04.2 26.4i 15FD562 T09 C~8vFY 2015 03 18.39734 09 59 37.75 +01 40 31.7 25.9r 15FD562 T09 C~8vFY 2015 03 18.40838 09 59 37.72 +01 40 32.3 25.9r 15FD562 T09 C~8vFY 2015 03 18.41671 09 59 37.69 +01 40 32.4 25.4r 15FD562 T09 C~8vFY 2015 03 18.42254 09 59 37.64 +01 40 32.4 25.8r 15FD562 T09 C~8vFY 2015 03 18.43485 09 59 37.61 +01 40 32.8 25.9r 15FD562 T09 C~8vFY 2015 03 18.44066 09 59 37.57 +01 40 33.1 26.0r 15FD562 T09 C~8vFY 2015 03 18.45301 09 59 37.53 +01 40 33.4 26.2r 15FD562 T09 C~8vFY 2015 03 20.36143 09 59 29.84 +01 41 31.2 25.9i 15FD562 T09 C~8vFY 2015 03 20.37600 09 59 29.80 +01 41 31.5 25.4i 15FD562 T09 C~8vFY 2015 03 20.39052 09 59 29.73 +01 41 32.2 25.3i 15FD562 T09 C~8vFY 2015 05 21.26891 09 57 46.97 +02 04 55.2 26.0i 15FD562 T09 C~8vFY 2015 05 21.27277 09 57 46.97 +02 04 55.5 26.5i 15FD562 T09 C~8vFY 2015 05 21.27663 09 57 46.97 +02 04 55.5 26.2i 15FD562 T09 C~8vFY 2015 05 21.28048 09 57 46.99 +02 04 55.3 25.9i 15FD562 T09 C~8vFY 2015 05 21.29589 09 57 46.99 +02 04 55.5 26.9i 15FD562 T09 C~8vFY
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 0.28 0.00 -0.21
2 0.0000 -0.70 -0.15 0.16 -0.01
3 0.0000 -0.70 0.13 0.16 0.03
4 0.0114 -255.80 0.05 -34.50 -0.08
5 0.0114 -257.34 0.23 -34.66 -0.02
6 0.0115 -259.80 -0.56 -34.52 0.34
7 0.1642 -4336.38 -0.07 -68.35 -0.11
8 0.1642 -4337.02 0.06 -67.94 0.22
9 0.1642 -4337.47 0.18 -68.01 0.10
10 0.1642 -4338.17 -0.12 -68.27 -0.20
11 0.1643 -4338.74 0.17 -68.06 -0.06
12 0.1643 -4339.40 -0.10 -67.99 -0.03
13 0.1643 -4340.07 0.09 -67.92 -0.04
14 0.1696 -4468.41 -0.19 -54.52 -0.03
15 0.1696 -4469.07 0.13 -54.45 -0.06
16 0.1696 -4470.30 -0.12 -54.16 0.13
17 0.3390 -6408.08 0.06 715.64 -0.08
18 0.3391 -6408.19 -0.08 715.92 0.15
19 0.3391 -6408.19 -0.12 715.92 0.09
20 0.3391 -6407.84 0.19 715.84 -0.05
21 0.3391 -6407.91 -0.04 716.02 -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.
15FD562 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 40.883 41.378 40.608 ecceobj 0.105 0.156 0.059 incobj 9.873 9.875 9.872 qmin 33.947 32.391 35.644 qmax 48.197 51.943 45.927 amean 40.900 41.672 40.621 amin 40.527 40.985 40.285 amax 41.301 42.425 40.978 emean 0.125 0.184 0.077 emin 0.096 0.147 0.049 emax 0.169 0.224 0.121 imean 12.241 13.350 12.078 imin 9.727 10.536 10.581 imax 14.448 15.925 13.820 excite_mean 0.247 0.295 0.223 fracstop 1.000 1.000 1.000 cjmean 2.995 2.971 3.006 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 181.9 182.5 180.9 kozaiamp 180.0 180.0 180.0