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: 15FM485 # Created Fri Jan 24 02:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 64.79d # First observation: 2015/03/22 # Last observation: 2015/05/26 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.034109 0.000000 0.003116 0.027741 0.000000 # Chi-squared of fit: 5.03 DOF: 20 RMS: 0.11 # Min/Max residuals: -0.19 0.29 # Exact a, adot, b, bdot, g, gdot: 1.735508E-05 2.968283E-02 2.199335E-06 3.210829E-03 2.691416E-02 -3.874882E-03 # Covariance matrix: 5.1425E-13 4.8031E-10 -2.1068E-14 -1.2801E-11 7.6714E-11 -1.2006E-09 4.8031E-10 8.5900E-07 -3.7518E-11 -2.2997E-08 1.3586E-07 -2.3878E-06 -2.1068E-14 -3.7518E-11 2.4506E-13 -3.9979E-13 -5.9556E-12 9.8547E-11 -1.2801E-11 -2.2997E-08 -3.9979E-13 6.4394E-10 -3.5635E-09 8.3255E-08 7.6714E-11 1.3586E-07 -5.9556E-12 -3.5635E-09 2.1894E-08 -2.7065E-07 -1.2006E-09 -2.3878E-06 9.8547E-11 8.3255E-08 -2.7065E-07 3.4732E-05 # lat0 lon0 xBary yBary zBary JD0 13.514038 -142.264803 0.588586 0.187090 -0.777944 2457104.034268 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 333.58893 +/- 18.853 Argument of Peri: 108.30811 +/- 37.589 Long of Asc Node: 152.67864 +/- 0.919 Inclination: 14.64117 +/- 0.110 Eccentricity: 0.24698426 +/- 0.1780 Semi-Major Axis: 47.65204151 +/- 5.6422 Time of Perihelion: 2465915.1308 +/- 6094.1 Perihelion: 35.88273718 +/- 9.4866 Aphelion: 59.42134583 +/- 11.0203 Period (y) 328.9504 +/- 58.42 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.56623629 +/- 0.1571 Ecliptic Y -22.13413887 +/- 0.1215 Ecliptic Z 8.68265882 +/- 0.0477 Ecliptic XDOT 0.00220805 +/- 0.0005 Ecliptic YDOT -0.00211249 +/- 0.0003 Ecliptic ZDOT 0.00022556 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 37.94036105 +/- 0.1419 Geocenter to KBO 37.15516179 +/- 0.2043 # Hcoef: 7.66
The following table shows the complete astrometric record for 15FM485. 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 (15FM485) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.53349 14 38 53.53 -01 16 40.9 23.3i 15FM485 T09 C~8SVZ 2015 03 22.56243 14 38 53.43 -01 16 39.9 23.3i 15FM485 T09 C~8SVZ 2015 03 22.57349 14 38 53.39 -01 16 39.2 23.1i 15FM485 T09 C~8SVZ 2015 03 22.58749 14 38 53.33 -01 16 39.0 23.4i 15FM485 T09 C~8SVZ 2015 03 22.61524 14 38 53.24 -01 16 38.3 23.7i 15FM485 T09 C~8SVZ 2015 03 22.62888 14 38 53.20 -01 16 37.7 23.3i 15FM485 T09 C~8SVZ 2015 05 23.40856 14 34 11.48 -00 48 31.6 23.1z 15FM485 T09 C~8SVZ 2015 05 23.42419 14 34 11.42 -00 48 31.4 22.8z 15FM485 T09 C~8SVZ 2015 05 23.46266 14 34 11.24 -00 48 31.1 23.1z 15FM485 T09 C~8SVZ 2015 05 26.27538 14 33 58.66 -00 47 50.6 23.3y 15FM485 T09 C~8SVZ 2015 05 26.29316 14 33 58.60 -00 47 50.2 23.6y 15FM485 T09 C~8SVZ 2015 05 26.30780 14 33 58.53 -00 47 50.1 23.1y 15FM485 T09 C~8SVZ 2015 05 26.32544 14 33 58.45 -00 47 49.9 22.9y 15FM485 T09 C~8SVZ
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 0.02 0.00 -0.06
2 0.0001 -1.74 0.04 0.48 -0.02
3 0.0001 -2.53 -0.08 0.95 0.29
4 0.0001 -3.44 -0.14 0.86 -0.01
5 0.0002 -4.95 0.04 1.10 -0.19
6 0.0003 -5.70 0.12 1.48 -0.01
7 0.1694 -4547.52 -0.14 271.60 0.08
8 0.1694 -4548.44 0.04 271.51 0.10
9 0.1696 -4551.09 0.10 270.94 -0.18
10 0.1773 -4743.02 -0.16 249.94 -0.12
11 0.1773 -4744.00 0.07 250.04 0.13
12 0.1773 -4745.03 0.04 249.80 0.02
13 0.1774 -4746.24 0.05 249.61 -0.02
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.
15FM485 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