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: 15JH13 # Created Tue May 20 01:10:31 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 61.89d # First observation: 2015/03/22 # Last observation: 2015/05/23 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.063774 -0.000001 0.019254 0.042817 0.000000 # Chi-squared of fit: 2.14 DOF: 22 RMS: 0.07 # Min/Max residuals: -0.11 0.18 # Exact a, adot, b, bdot, g, gdot: 2.217776E-05 5.727410E-02 7.365642E-06 1.925572E-02 4.144259E-02 -2.281937E-02 # Covariance matrix: 3.8186E-13 4.2409E-11 -8.7164E-15 -1.2745E-12 7.5740E-12 1.4931E-11 4.2409E-11 1.3156E-07 -2.4529E-11 -4.5633E-09 2.1048E-08 -1.9809E-07 -8.7164E-15 -2.4529E-11 3.6731E-13 -1.4686E-12 -3.9652E-12 2.9061E-11 -1.2745E-12 -4.5633E-09 -1.4686E-12 1.9782E-10 -7.0090E-10 1.2592E-08 7.5740E-12 2.1048E-08 -3.9652E-12 -7.0090E-10 3.4125E-09 -2.2976E-08 1.4931E-11 -1.9809E-07 2.9061E-11 1.2592E-08 -2.2976E-08 2.0012E-06 # lat0 lon0 xBary yBary zBary JD0 12.714536 -143.190683 0.575341 0.178324 -0.789823 2457104.051198 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 347.45530 +/- 1.155 Argument of Peri: 93.10334 +/- 1.431 Long of Asc Node: 183.50189 +/- 0.179 Inclination: 22.39431 +/- 0.101 Eccentricity: 0.62062469 +/- 0.0288 Semi-Major Axis: 53.46865471 +/- 3.2551 Time of Perihelion: 2462076.7824 +/- 58.5 Perihelion: 20.28468753 +/- 1.9744 Aphelion: 86.65262190 +/- 5.4956 Period (y) 390.9823 +/- 35.70 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -19.84116283 +/- 0.0266 Ecliptic Y -14.12742132 +/- 0.0199 Ecliptic Z 5.31101199 +/- 0.0075 Ecliptic XDOT 0.00366521 +/- 0.0001 Ecliptic YDOT -0.00198634 +/- 0.0001 Ecliptic ZDOT 0.00090920 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 24.92915209 +/- 0.0240 Geocenter to KBO 24.12976840 +/- 0.0340 # Hcoef: 10.30
The following table shows the complete astrometric record for 15JH13. 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 (15JH13) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.55042 14 34 27.40 -01 45 03.1 24.2i 15JH13 T09 C~8suo 2015 03 22.61243 14 34 27.09 -01 44 59.6 24.1i 15JH13 T09 C~8suo 2015 03 22.61524 14 34 27.08 -01 44 59.5 24.2i 15JH13 T09 C~8suo 2015 03 22.62615 14 34 27.04 -01 44 58.9 23.9i 15JH13 T09 C~8suo 2015 05 15.412542 14 28 39.002 -01 00 14.50 24.0r 15JH13 568 C~2TuN 2015 05 15.435977 14 28 38.841 -01 00 13.67 24.0r 15JH13 568 C~2TuN 2015 05 15.466105 14 28 38.632 -01 00 12.61 23.9r 15JH13 568 C~2TuN 2015 05 17.351168 14 28 26.017 -00 59 06.59 24.7g 15JH13 568 C~2TuN 2015 05 17.369180 14 28 25.892 -00 59 06.02 24.7g 15JH13 568 C~2TuN 2015 05 17.435309 14 28 25.446 -00 59 03.74 24.5g 15JH13 568 C~2TuN 2015 05 23.40482 14 27 46.64 -00 55 54.0 24.2z 15JH13 T09 C~8suo 2015 05 23.41833 14 27 46.56 -00 55 53.6 23.8z 15JH13 T09 C~8suo 2015 05 23.42124 14 27 46.55 -00 55 53.3 24.8z 15JH13 T09 C~8suo 2015 05 23.43904 14 27 46.43 -00 55 52.9 24.1z 15JH13 T09 C~8suo
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 -0.07 0.00 -0.00
2 0.0002 -5.52 -0.10 1.84 0.01
3 0.0002 -5.69 -0.02 1.88 -0.03
4 0.0002 -6.45 0.18 2.26 0.03
5 0.1475 -5810.65 -0.04 882.16 0.04
6 0.1475 -5813.20 -0.03 882.18 0.03
7 0.1476 -5816.52 -0.05 882.18 0.00
8 0.1528 -6017.05 0.05 884.37 -0.00
9 0.1528 -6019.01 0.03 884.31 -0.06
10 0.1530 -6026.09 0.08 884.34 -0.03
11 0.1693 -6638.80 -0.11 878.38 -0.11
12 0.1694 -6640.06 -0.00 878.38 -0.07
13 0.1694 -6640.30 0.05 878.62 0.17
14 0.1694 -6642.14 0.02 878.42 0.03
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.
15JH13 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 52.789 60.852 47.261 ecceobj 0.618 0.679 0.562 incobj 22.480 22.214 22.814 qmin 19.972 19.099 19.456 qmax 88.858 105.667 79.028 amean 53.854 61.406 47.999 amin 52.789 60.463 46.375 amax 54.684 62.568 49.419 emean 0.622 0.682 0.575 emin 0.616 0.675 0.557 emax 0.627 0.689 0.600 imean 22.072 21.586 21.085 imin 21.947 21.327 19.245 imax 22.175 21.870 22.513 excite_mean 0.727 0.775 0.679 fracstop 0.009 0.008 0.052 cjmean 2.508 2.441 2.562 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 96.5 99.5 124.5 kozaiamp 3.1 3.2 33.0