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: 15KG465 # Created Sun Oct 19 01:11:02 2025 # Orbit generated from Bernstein formalism # Fitting 22 observations of 22 # Arc: 61.91d # First observation: 2015/03/22 # Last observation: 2015/05/23 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.037529 -0.000001 0.007717 0.028727 0.000000 # Chi-squared of fit: 9.62 DOF: 38 RMS: 0.12 # Min/Max residuals: -0.39 0.24 # Exact a, adot, b, bdot, g, gdot: 1.968073E-05 3.421515E-02 4.427989E-06 7.753369E-03 2.806390E-02 -1.012896E-02 # Covariance matrix: 2.7078E-13 2.4622E-11 -1.1082E-14 -3.2468E-13 5.1675E-12 2.1425E-10 2.4622E-11 1.0814E-07 -3.6184E-11 -2.7788E-09 1.7689E-08 -1.1432E-07 -1.1082E-14 -3.6184E-11 2.6257E-13 -6.9361E-13 -6.0619E-12 -8.1049E-13 -3.2468E-13 -2.7788E-09 -6.9361E-13 9.3225E-11 -4.3315E-10 8.8081E-09 5.1675E-12 1.7689E-08 -6.0619E-12 -4.3315E-10 2.9481E-09 -3.8186E-09 2.1425E-10 -1.1432E-07 -8.1049E-13 8.8081E-09 -3.8186E-09 4.1980E-06 # lat0 lon0 xBary yBary zBary JD0 12.510415 -143.801485 0.566676 0.176827 -0.796396 2457104.051198 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 350.64338 +/- 1.902 Argument of Peri: 89.46270 +/- 5.562 Long of Asc Node: 172.54284 +/- 0.305 Inclination: 17.71279 +/- 0.096 Eccentricity: 0.61241248 +/- 0.0622 Semi-Major Axis: 83.40376478 +/- 10.4638 Time of Perihelion: 2464331.4198 +/- 555.0 Perihelion: 32.32625847 +/- 6.5869 Aphelion: 134.48127109 +/- 17.6522 Period (y) 761.7048 +/- 143.34 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.06788735 +/- 0.0543 Ecliptic Y -20.56925934 +/- 0.0397 Ecliptic Z 7.71889200 +/- 0.0149 Ecliptic XDOT 0.00287867 +/- 0.0002 Ecliptic YDOT -0.00203294 +/- 0.0001 Ecliptic ZDOT 0.00052448 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.43648994 +/- 0.0489 Geocenter to KBO 35.63296702 +/- 0.0689 # Hcoef: 7.69
The following table shows the complete astrometric record for 15KG465. 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 (15KG465) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.55042 14 31 56.12 -01 45 12.9 23.0i 15KG465 T09 C~94qT 2015 03 22.59857 14 31 55.95 -01 45 11.3 23.1i 15KG465 T09 C~94qT 2015 03 22.61243 14 31 55.91 -01 45 10.6 23.1i 15KG465 T09 C~94qT 2015 03 22.62345 14 31 55.86 -01 45 10.2 23.2i 15KG465 T09 C~94qT 2015 03 22.62615 14 31 55.84 -01 45 10.2 23.2i 15KG465 T09 C~94qT 2015 03 28.293480 14 31 34.687 -01 41 45.85 23.4r 15KG465 W84 C~98Nt 2015 05 17.35118 14 27 39.08 -01 16 07.7 24.1g 15KG465 T09 C~94qT 2015 05 17.36919 14 27 39.00 -01 16 07.3 24.3g 15KG465 T09 C~94qT 2015 05 17.43321 14 27 38.68 -01 16 06.1 24.3g 15KG465 T09 C~94qT 2015 05 17.43532 14 27 38.67 -01 16 06.0 24.9g 15KG465 T09 C~94qT 2015 05 19.48967 14 27 29.08 -01 15 23.7 22.5y 15KG465 T09 C~94qT 2015 05 19.50316 14 27 29.01 -01 15 23.7 22.7y 15KG465 T09 C~94qT 2015 05 19.51464 14 27 28.96 -01 15 23.3 23.0y 15KG465 T09 C~94qT 2015 05 19.52272 14 27 28.91 -01 15 23.2 23.4y 15KG465 T09 C~94qT 2015 05 19.52882 14 27 28.90 -01 15 23.0 22.5y 15KG465 T09 C~94qT 2015 05 19.53152 14 27 28.89 -01 15 22.7 22.8y 15KG465 T09 C~94qT 2015 05 19.54227 14 27 28.81 -01 15 23.0 22.7y 15KG465 T09 C~94qT 2015 05 23.40482 14 27 11.25 -01 14 09.5 22.9z 15KG465 T09 C~94qT 2015 05 23.41833 14 27 11.18 -01 14 09.3 22.8z 15KG465 T09 C~94qT 2015 05 23.42124 14 27 11.16 -01 14 09.2 22.8z 15KG465 T09 C~94qT 2015 05 23.43904 14 27 11.09 -01 14 09.0 22.8z 15KG465 T09 C~94qT 2015 05 23.45689 14 27 11.00 -01 14 08.5 22.9z 15KG465 T09 C~94qT
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 -0.01
2 0.0001 -2.93 0.03 0.70 -0.11
3 0.0002 -3.72 0.11 1.17 0.13
4 0.0002 -4.56 -0.03 1.31 0.08
5 0.0002 -4.84 -0.14 1.21 -0.06
6 0.0157 -370.82 0.13 92.87 -0.01
7 0.1528 -4211.25 -0.00 413.94 0.10
8 0.1528 -4212.51 0.09 413.93 0.15
9 0.1530 -4217.45 -0.04 413.53 -0.05
10 0.1530 -4217.62 -0.06 413.57 -0.00
11 0.1586 -4367.46 0.01 407.37 0.05
12 0.1587 -4368.46 0.01 407.04 -0.23
13 0.1587 -4369.30 0.01 407.17 -0.05
14 0.1587 -4370.04 -0.14 407.03 -0.17
15 0.1587 -4370.25 0.10 407.17 -0.01
16 0.1587 -4370.49 0.06 407.40 0.24
17 0.1588 -4371.53 -0.20 406.73 -0.39
18 0.1693 -4644.64 0.14 391.63 0.12
19 0.1694 -4645.70 0.03 391.48 0.04
20 0.1694 -4646.02 -0.08 391.48 0.05
21 0.1694 -4647.07 0.12 391.33 -0.00
22 0.1695 -4648.51 -0.06 391.37 0.13
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.
15KG465 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