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: 15KM419 # Created Fri Jan 24 02:10:52 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 55.93d # First observation: 2015/05/17 # Last observation: 2015/07/12 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.021605 -0.000005 0.003514 0.022060 0.000000 # WARNING Fitting with energy constraint # WARNING MRQMIN stopped after 19 iterations -- oscilliatory solution # Chi-squared of fit: 3.75 DOF: 21 RMS: 0.09 # Min/Max residuals: -0.16 0.29 # Exact a, adot, b, bdot, g, gdot: 1.299500E-05 1.821702E-02 2.219899E-06 2.723824E-03 2.153018E-02 7.561920E-03 # Covariance matrix: 4.5920E-13 6.8935E-11 -7.3770E-14 1.6274E-11 1.5726E-11 -2.9692E-10 6.8935E-11 7.1675E-08 -9.3217E-11 1.6703E-08 1.1968E-08 -1.7376E-06 -7.3770E-14 -9.3217E-11 3.0966E-13 -2.3123E-11 -1.5224E-11 2.3833E-09 1.6274E-11 1.6703E-08 -2.3123E-11 3.9202E-09 2.7877E-09 -4.0589E-07 1.5726E-11 1.1968E-08 -1.5224E-11 2.7877E-09 2.0770E-09 -2.6267E-07 -2.9692E-10 -1.7376E-06 2.3833E-09 -4.0589E-07 -2.6267E-07 5.1892E-05 # lat0 lon0 xBary yBary zBary JD0 13.781669 -140.277303 -0.285294 0.230776 -0.940461 2457159.910498 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 63.32797 +/- 37.661 Argument of Peri: 309.80203 +/- 12.638 Long of Asc Node: 162.73900 +/- 0.230 Inclination: 15.91932 +/- 0.039 Eccentricity: 0.38723964 +/- 0.3290 Semi-Major Axis: 48.88487153 +/- 13.4729 Time of Perihelion: 2435189.4443 +/- 9388.7 Perihelion: 29.95471171 +/- 18.0768 Aphelion: 67.81503135 +/- 24.6564 Period (y) 341.7983 +/- 141.30 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.26102458 +/- 0.0734 Ecliptic Y -29.66674827 +/- 0.0610 Ecliptic Z 11.06475184 +/- 0.0234 Ecliptic XDOT 0.00082275 +/- 0.0007 Ecliptic YDOT -0.00233199 +/- 0.0006 Ecliptic ZDOT 0.00056555 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 47.39076430 +/- 0.0669 Geocenter to KBO 46.44642820 +/- 0.0983 # Hcoef: 7.52
The following table shows the complete astrometric record for 15KM419. 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 (15KM419) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.40972 14 46 34.25 -01 37 23.2 25.0g 15KM419 T09 C~8SW1 2015 05 17.47151 14 46 33.98 -01 37 22.2 24.5g 15KM419 T09 C~8SW1 2015 05 17.49695 14 46 33.89 -01 37 21.7 25.3g 15KM419 T09 C~8SW1 2015 05 21.37878 14 46 18.38 -01 36 22.7 24.1i 15KM419 T09 C~8SW1 2015 05 21.40372 14 46 18.28 -01 36 22.4 23.9i 15KM419 T09 C~8SW1 2015 05 21.41179 14 46 18.27 -01 36 22.4 24.2i 15KM419 T09 C~8SW1 2015 05 21.41718 14 46 18.23 -01 36 22.2 23.9i 15KM419 T09 C~8SW1 2015 05 26.28279 14 45 59.31 -01 35 17.4 23.5y 15KM419 T09 C~8SW1 2015 05 26.35783 14 45 59.02 -01 35 16.4 23.7y 15KM419 T09 C~8SW1 2015 07 12.25545 14 43 52.51 -01 34 11.3 24.4z 15KM419 T09 C~8SW1 2015 07 12.27784 14 43 52.47 -01 34 11.3 24.0z 15KM419 T09 C~8SW1 2015 07 12.31304 14 43 52.42 -01 34 11.8 24.0z 15KM419 T09 C~8SW1 2015 07 12.34270 14 43 52.38 -01 34 12.0 24.3z 15KM419 T09 C~8SW1
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 0.08 0.00 -0.05
2 0.0002 -4.16 -0.16 -0.29 -0.11
3 0.0002 -5.60 0.02 -0.22 0.05
4 0.0109 -245.05 -0.09 -15.24 0.09
5 0.0109 -246.57 -0.07 -15.41 0.04
6 0.0110 -246.71 0.29 -15.46 0.03
7 0.0110 -247.35 -0.01 -15.45 0.06
8 0.0243 -537.26 -0.03 -40.61 -0.10
9 0.0245 -541.70 -0.03 -40.99 -0.02
10 0.1529 -2367.52 0.18 -560.00 -0.05
11 0.1530 -2368.09 -0.04 -560.18 0.11
12 0.1531 -2368.66 -0.05 -560.89 -0.06
13 0.1531 -2369.17 -0.10 -561.26 0.01
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.
15KM419 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