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: 15KF459 # Created Wed May 21 01:10:33 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 55.96d # First observation: 2015/05/17 # Last observation: 2015/07/12 Preliminary a, adot, b, bdot, g, gdot: -0.000004 0.037544 -0.000014 0.002704 0.029530 0.000000 # Chi-squared of fit: 3.72 DOF: 22 RMS: 0.09 # Min/Max residuals: -0.16 0.18 # Exact a, adot, b, bdot, g, gdot: 1.872324E-05 3.288753E-02 7.758283E-07 1.258469E-03 2.882005E-02 2.115675E-03 # Covariance matrix: 3.9295E-13 2.3310E-11 -3.4020E-14 6.7677E-12 6.9107E-12 2.5508E-10 2.3310E-11 2.4477E-08 -6.5529E-11 7.4908E-09 4.0715E-09 -5.3593E-07 -3.4020E-14 -6.5529E-11 3.4975E-13 -2.1650E-11 -1.0462E-11 1.5662E-09 6.7677E-12 7.4908E-09 -2.1650E-11 2.3316E-09 1.2363E-09 -1.6750E-07 6.9107E-12 4.0715E-09 -1.0462E-11 1.2363E-09 7.1723E-10 -7.8091E-08 2.5508E-10 -5.3593E-07 1.5662E-09 -1.6750E-07 -7.8091E-08 1.4946E-05 # lat0 lon0 xBary yBary zBary JD0 16.077821 -141.647485 -0.307589 0.266373 -0.923863 2457159.863358 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 17.38217 +/- 23.472 Argument of Peri: 56.47065 +/- 36.988 Long of Asc Node: 136.42956 +/- 0.129 Inclination: 15.77857 +/- 0.004 Eccentricity: 0.19820894 +/- 0.0522 Semi-Major Axis: 43.67617615 +/- 0.6200 Time of Perihelion: 2452059.9257 +/- 6873.2 Perihelion: 35.01916755 +/- 2.3351 Aphelion: 52.33318475 +/- 2.3995 Period (y) 288.6524 +/- 6.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -26.71225971 +/- 0.0243 Ecliptic Y -21.52621317 +/- 0.0192 Ecliptic Z 9.60945546 +/- 0.0089 Ecliptic XDOT 0.00181027 +/- 0.0003 Ecliptic YDOT -0.00255548 +/- 0.0002 Ecliptic ZDOT 0.00017061 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 35.62673584 +/- 0.0217 Geocenter to KBO 34.69806717 +/- 0.0322 # Hcoef: 8.26
The following table shows the complete astrometric record for 15KF459. 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 (15KF459) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.36258 14 44 22.34 +00 58 11.0 24.8g 15KF459 T09 C~8r6l 2015 05 17.42671 14 44 22.03 +00 58 12.2 25.5g 15KF459 T09 C~8r6l 2015 05 17.46091 14 44 21.83 +00 58 12.7 25.5g 15KF459 T09 C~8r6l 2015 05 17.50119 14 44 21.63 +00 58 13.2 25.6g 15KF459 T09 C~8r6l 2015 05 26.29019 14 43 37.96 +01 00 21.3 23.1y 15KF459 T09 C~8r6l 2015 05 26.30476 14 43 37.90 +01 00 21.3 22.9y 15KF459 T09 C~8r6l 2015 05 26.31657 14 43 37.84 +01 00 21.3 23.3y 15KF459 T09 C~8r6l 2015 05 26.31942 14 43 37.82 +01 00 21.4 23.0y 15KF459 T09 C~8r6l 2015 05 26.33417 14 43 37.75 +01 00 21.6 23.2y 15KF459 T09 C~8r6l 2015 05 26.34893 14 43 37.68 +01 00 21.9 22.9y 15KF459 T09 C~8r6l 2015 05 26.36367 14 43 37.61 +01 00 21.9 23.7y 15KF459 T09 C~8r6l 2015 07 12.27172 14 41 03.79 +00 57 09.8 23.1z 15KF459 T09 C~8r6l 2015 07 12.29941 14 41 03.76 +00 57 09.3 23.1z 15KF459 T09 C~8r6l 2015 07 12.32113 14 41 03.72 +00 57 08.8 23.0z 15KF459 T09 C~8r6l
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 -0.14 0.00 -0.02
2 0.0002 -4.79 0.17 -0.31 0.18
3 0.0003 -7.80 -0.11 -0.77 -0.01
4 0.0004 -10.80 0.08 -1.23 -0.15
5 0.0244 -673.04 -0.16 -83.84 0.14
6 0.0245 -673.89 0.06 -84.12 0.03
7 0.0245 -674.75 0.07 -84.40 -0.11
8 0.0245 -675.06 -0.03 -84.40 -0.07
9 0.0246 -676.12 -0.01 -84.54 -0.04
10 0.0246 -677.21 -0.01 -84.58 0.10
11 0.0246 -678.21 0.07 -84.91 -0.06
12 0.1531 -2810.42 -0.03 -986.91 -0.02
13 0.1531 -2810.69 0.08 -987.53 0.07
14 0.1532 -2811.11 -0.04 -988.19 -0.05
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.
15KF459 quality flag:1 Type: SCATNEAR CENTAURR SCATEXTD axisobj 43.187 53.048 42.356 ecceobj 0.189 0.464 0.154 incobj 15.791 15.785 15.778 qmin 34.474 28.208 35.444 qmax 53.046 82.090 50.263 amean 43.542 54.018 42.699 amin 43.134 53.048 42.282 amax 44.006 55.264 43.107 emean 0.181 0.471 0.147 emin 0.156 0.460 0.128 emax 0.207 0.485 0.167 imean 14.526 14.463 14.807 imin 13.464 14.302 13.899 imax 15.760 14.672 15.694 excite_mean 0.309 0.533 0.295 fracstop 1.000 0.005 1.000 cjmean 2.981 2.850 2.983 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 178.2 19.5 179.9 kozaiamp 180.0 1.5 180.0