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: 15KJ175
# Created Sun Dec 22 02:10:24 2024
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 23
# Arc: 1.36y
# First observation: 2015/02/25
# Last observation: 2016/07/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000060 0.014372 0.000004 -0.011554 0.021357 0.000000
# Chi-squared of fit: 4.52 DOF: 40 RMS: 0.08
# Min/Max residuals: -0.15 0.16
# Exact a, adot, b, bdot, g, gdot:
1.047666E-05 1.418507E-02 -8.538925E-06 -1.143041E-02 2.116584E-02 1.106496E-03
# Covariance matrix:
4.0029E-13 -1.0702E-13 1.9563E-14 -2.6871E-13 3.8089E-13 1.8647E-11
-1.0702E-13 2.9219E-13 -7.3811E-15 2.3555E-14 3.6132E-14 -1.6407E-12
1.9563E-14 -7.3811E-15 1.4738E-13 -2.1745E-13 4.2944E-14 5.1482E-12
-2.6871E-13 2.3555E-14 -2.1745E-13 8.7572E-13 -4.7673E-13 -4.1656E-11
3.8089E-13 3.6132E-14 4.2944E-14 -4.7673E-13 5.7469E-13 3.3091E-11
1.8647E-11 -1.6407E-12 5.1482E-12 -4.1656E-11 3.3091E-11 2.8929E-09
# lat0 lon0 xBary yBary zBary JD0
8.680441 -127.804123 0.956516 0.036784 -0.240107 2457079.135298
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 152.55685 +/- 1.230
Argument of Peri: 8.38774 +/- 1.227
Long of Asc Node: 61.65685 +/- 0.001
Inclination: 39.45617 +/- 0.002
Eccentricity: 0.11478679 +/- 0.0009
Semi-Major Axis: 43.01067426 +/- 0.0110
Time of Perihelion: 2413409.6683 +/- 351.5
Perihelion: 38.07361698 +/- 0.0419
Aphelion: 47.94773153 +/- 0.0425
Period (y) 282.0802 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.53567907 +/- 0.0010
Ecliptic Y -36.50735430 +/- 0.0013
Ecliptic Z 7.13013503 +/- 0.0003
Ecliptic XDOT 0.00122265 +/- 0.0000
Ecliptic YDOT -0.00141844 +/- 0.0000
Ecliptic ZDOT -0.00143992 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.49717972 +/- 0.0012
Geocenter to KBO 47.24594260 +/- 0.0017
# Hcoef: 7.80
The following table shows the complete astrometric record for 15KJ175. 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 (15KJ175) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.63452 15 28 09.210 -09 55 00.61 24.4r 15KJ175 568 C~2nvh 2015 03 19.62860 15 27 37.096 -09 51 30.78 24.5r 15KJ175 568 C~2nvh 2015 03 22.54735 15 27 30.037 -09 50 56.07 24.7r 15KJ175 568 C~2nvh 2015 04 13.56008 15 26 19.377 -09 46 06.56 24.9r 15KJ175 568 C~2nvh 2015 04 13.60117 15 26 19.218 -09 46 05.78 24.7r 15KJ175 568 C~2nvh 2015 04 18.57019 15 25 59.761 -09 44 58.28 24.7r 15KJ175 568 C~2nvh 2015 05 21.33063 15 23 36.203 -09 38 31.80 24.6r 15KJ175 568 C~2nvh 2015 05 21.37180 15 23 36.011 -09 38 31.26 24.6r 15KJ175 568 C~2nvh 2015 05 21.41305 15 23 35.825 -09 38 31.03 24.3r 15KJ175 568 C~2nvh 2015 05 22.48950 15 23 30.991 -09 38 21.56 24.2r 15KJ175 568 C~2nvh 2015 05 25.48011 15 23 17.676 -09 37 56.55 24.4r 15KJ175 568 C~2nvh 2015 06 20.36937 15 21 32.349 -09 36 05.40 24.5r 15KJ175 568 C~2nvh 2015 06 20.41027 15 21 32.199 -09 36 05.64 24.7r 15KJ175 568 C~2nvh 2015 06 23.43052 15 21 21.678 -09 36 06.52 24.7r 15KJ175 568 C~2nvh 2015 07 11.31323 15 20 30.329 -09 37 18.87 24.6r 15KJ175 568 C~2nvh 2015 07 18.37369 15 20 15.892 -09 38 19.45 24.3r 15KJ175 568 C~2nvh 2016 04 03.51820 15 29 27.106 -10 38 54.96 24.0w 15KJ175 568 C~2nvh 2016 04 08.56787 15 29 09.719 -10 37 50.69 25.0w 15KJ175 568 C~2nvh 2016 04 29.44543 15 27 45.836 -10 33 23.69 24.9w 15KJ175 568 C~2nvh 2016 05 04.38051 15 27 24.091 -10 32 24.25 25.0w 15KJ175 568 C~2nvh 2016 05 30.50246 15 25 27.046 -10 28 15.86 25.0w 15KJ175 568 C~2nvh 2016 07 03.35024 15 23 21.961 -10 27 19.82 24.1w 15KJ175 568 C~2nvh 2016 07 05.33407 15 23 16.490 -10 27 28.38 24.7w 15KJ175 568 C~2nvh
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 -0.00
2 0.0602 -511.74 -0.02 85.74 0.02
3 0.0682 -621.42 0.05 93.49 -0.11
4 0.1285 -1705.04 0.05 114.48 -0.07
5 0.1286 -1707.51 -0.00 114.65 0.14
6 0.1422 -2002.91 -0.10 108.42 0.03
7 0.2319 -4155.25 0.03 -47.90 0.01
8 0.2320 -4158.14 -0.08 -48.09 0.16
9 0.2321 -4160.86 -0.01 -48.56 0.04
10 0.2351 -4232.46 -0.08 -57.32 -0.05
11 0.2432 -4429.43 -0.01 -82.53 -0.04
12 0.3141 -5965.97 0.08 -367.04 0.10
13 0.3142 -5968.06 0.12 -367.83 -0.15
14 0.3225 -6118.54 -0.04 -407.96 -0.02
15 0.3715 -6835.75 -0.05 -670.03 0.02
16 0.3908 -7027.19 0.05 -782.75 -0.07
17 1.1030 1764.93 -0.10 -2268.84 -0.05
18 1.1169 1500.64 0.02 -2269.76 -0.07
19 1.1740 236.13 -0.01 -2316.88 -0.14
20 1.1875 -89.28 0.09 -2338.81 -0.01
21 1.2590 -1823.21 0.15 -2527.82 0.13
22 1.3517 -3624.09 -0.14 -2935.69 0.12
23 1.3572 -3700.10 -0.01 -2964.27 -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.
15KJ175 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.732 42.767 42.702 ecceobj 0.119 0.121 0.118 incobj 39.559 39.558 39.560 qmin 36.888 36.833 36.960 qmax 49.318 49.436 49.254 amean 42.976 43.009 42.955 amin 42.638 42.665 42.616 amax 43.350 43.376 43.323 emean 0.123 0.125 0.121 emin 0.108 0.110 0.107 emax 0.138 0.140 0.137 imean 38.211 38.211 38.213 imin 37.939 37.949 37.946 imax 38.496 38.508 38.479 excite_mean 0.631 0.631 0.630 fracstop 1.000 1.000 1.000 cjmean 2.564 2.564 2.564 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 156.0 157.1 154.8 kozaiamp 179.9 179.8 179.8