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: 15KJ173
# Created Fri Apr 19 01:17:25 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 30
# Arc: 2.50y
# First observation: 2015/02/25
# Last observation: 2017/08/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000134 0.026705 -0.000006 -0.003504 0.026449 0.000000
# WARNING -- MRQMIN stopped after 17 iterations
# Chi-squared of fit: 11.97 DOF: 52 RMS: 0.11
# Min/Max residuals: -0.39 0.31
# Exact a, adot, b, bdot, g, gdot:
1.520787E-05 2.648875E-02 -1.489916E-06 -3.524874E-03 2.622653E-02 3.532185E-03
# Covariance matrix:
1.7146E-13 -1.3356E-14 -6.1689E-15 -8.2015E-15 1.1604E-13 1.6221E-12
-1.3356E-14 3.7888E-13 7.6379E-15 -6.7419E-14 2.2985E-13 9.8622E-12
-6.1689E-15 7.6379E-15 1.1088E-13 -8.1004E-14 -4.2140E-15 3.8553E-13
-8.2015E-15 -6.7419E-14 -8.1004E-14 1.1933E-13 -4.5965E-14 -2.5064E-12
1.1604E-13 2.2985E-13 -4.2140E-15 -4.5965E-14 2.7361E-13 7.2844E-12
1.6221E-12 9.8622E-12 3.8553E-13 -2.5064E-12 7.2844E-12 3.6060E-10
# lat0 lon0 xBary yBary zBary JD0
8.398965 -125.678957 0.964845 0.030413 -0.205127 2457079.141088
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 69.74258 +/- 0.038
Argument of Peri: 48.77602 +/- 0.040
Long of Asc Node: 101.22908 +/- 0.003
Inclination: 11.11084 +/- 0.000
Eccentricity: 0.11189851 +/- 0.0007
Semi-Major Axis: 39.41515506 +/- 0.0074
Time of Perihelion: 2439560.3936 +/- 8.2
Perihelion: 35.00465803 +/- 0.0289
Aphelion: 43.82565210 +/- 0.0294
Period (y) 247.4589 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.90742095 +/- 0.0004
Ecliptic Y -30.24568409 +/- 0.0006
Ecliptic Z 5.56932711 +/- 0.0001
Ecliptic XDOT 0.00199849 +/- 0.0000
Ecliptic YDOT -0.00195839 +/- 0.0000
Ecliptic ZDOT -0.00031007 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.34799532 +/- 0.0005
Geocenter to KBO 38.12932373 +/- 0.0008
# Hcoef: 8.78
The following table shows the complete astrometric record for 15KJ173. 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 (15KJ173) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.64031 15 36 10.049 -10 41 53.56 24.8r 15KJ173 568 C~2lVF 2015 03 19.63267 15 35 43.928 -10 36 17.86 24.0r 15KJ173 568 C~2lVF 2015 03 22.55230 15 35 36.926 -10 35 24.49 24.7r 15KJ173 568 C~2lVF 2015 04 13.56418 15 34 21.615 -10 28 05.55 24.5r 15KJ173 568 C~2lVF 2015 04 13.60528 15 34 21.429 -10 28 04.48 25.1r 15KJ173 568 C~2lVF 2015 04 18.57429 15 33 59.868 -10 26 21.68 24.6r 15KJ173 568 C~2lVF 2015 05 21.33472 15 31 16.279 -10 16 06.44 24.2r 15KJ173 568 C~2lVF 2015 05 21.37588 15 31 16.070 -10 16 05.80 24.7r 15KJ173 568 C~2lVF 2015 05 21.41717 15 31 15.848 -10 16 05.13 24.5r 15KJ173 568 C~2lVF 2015 05 22.49362 15 31 10.265 -10 15 48.52 24.7r 15KJ173 568 C~2lVF 2015 05 22.51002 15 31 10.199 -10 15 48.18 24.7r 15KJ173 568 C~2lVF 2015 05 25.48424 15 30 54.866 -10 15 04.20 24.3r 15KJ173 568 C~2lVF 2015 06 20.41439 15 28 52.728 -10 10 44.22 25.1r 15KJ173 568 C~2lVF 2015 06 23.43462 15 28 40.602 -10 10 30.64 24.8r 15KJ173 568 C~2lVF 2015 07 11.31733 15 27 42.010 -10 10 30.09 24.6r 15KJ173 568 C~2lVF 2016 02 05.64703 15 41 34.645 -11 17 24.13 24.8w 15KJ173 568 C~2lVF 2016 02 11.65893 15 41 46.241 -11 16 55.68 24.8w 15KJ173 568 C~2lVF 2016 02 12.59849 15 41 47.703 -11 16 49.75 24.9w 15KJ173 568 C~2lVF 2016 03 15.59026 15 41 41.890 -11 10 33.48 24.0w 15KJ173 568 C~2lVF 2016 03 17.60989 15 41 38.011 -11 10 00.54 25.4w 15KJ173 568 C~2lVF 2016 04 03.52224 15 40 51.134 -11 04 52.11 25.5w 15KJ173 568 C~2lVF 2016 04 08.57191 15 40 32.668 -11 03 13.12 24.8w 15KJ173 568 C~2lVF 2016 04 29.45352 15 39 00.062 -10 56 22.11 24.6w 15KJ173 568 C~2lVF 2016 05 04.38860 15 38 35.468 -10 54 49.26 24.5w 15KJ173 568 C~2lVF 2016 05 30.47009 15 36 21.049 -10 47 55.29 24.5w 15KJ173 568 C~2lVF 2016 07 03.35835 15 33 55.152 -10 44 16.27 25.0w 15KJ173 568 C~2lVF 2016 07 05.34215 15 33 48.769 -10 44 17.68 24.7w 15KJ173 568 C~2lVF 2017 03 28.59816 15 47 03.208 -11 39 41.66 24.7w 15KJ173 568 C~2lVF 2017 08 19.25564 15 38 45.165 -11 24 53.33 25.2w 15KJ173 568 C~2lVF 2017 08 25.26415 15 38 52.632 -11 26 47.24 25.2w 15KJ173 568 C~2lVF
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 0.16 0.00 -0.13
2 0.0602 -453.48 -0.10 235.21 0.07
3 0.0682 -566.41 0.09 262.66 0.05
4 0.1285 -1749.49 0.05 425.85 -0.12
5 0.1286 -1752.41 -0.14 426.23 0.06
6 0.1422 -2085.80 0.04 450.51 0.05
7 0.2319 -4577.45 -0.05 471.46 -0.06
8 0.2320 -4580.60 0.06 471.34 -0.03
9 0.2321 -4583.94 -0.00 471.21 -0.02
10 0.2351 -4667.97 -0.07 467.56 -0.04
11 0.2351 -4669.00 0.19 467.66 0.12
12 0.2432 -4899.38 -0.06 456.03 -0.13
13 0.3142 -6713.38 -0.04 273.92 0.04
14 0.3225 -6890.57 -0.03 243.80 0.04
15 0.3715 -7731.05 -0.04 34.67 -0.07
16 0.9446 5146.45 0.05 -953.54 -0.02
17 0.9610 5305.90 0.06 -886.34 -0.01
18 0.9636 5325.46 -0.12 -875.59 0.13
19 1.0512 5154.99 ( -0.28) -529.23 ( 0.43)
20 1.0567 5091.79 -0.03 -510.40 -0.05
21 1.1030 4348.71 -0.08 -370.42 0.00
22 1.1169 4061.19 0.11 -337.33 0.31
23 1.1740 2638.97 -0.06 -255.65 0.01
24 1.1875 2265.02 0.01 -250.14 -0.10
25 1.2589 242.91 -0.16 -313.25 -0.06
26 1.3517 -1897.75 0.25 -609.84 0.13
27 1.3572 -1988.79 -0.14 -633.59 -0.12
28 2.0861 10161.62 -0.04 -1147.79 0.13
29 2.4794 2826.23 0.00 -1970.89 -0.39
30 2.4959 2959.65 0.09 -2055.98 0.19
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.
15KJ173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.092 39.115 39.069 ecceobj 0.107 0.109 0.105 incobj 11.106 11.106 11.106 qmin 34.109 34.025 34.151 qmax 45.309 45.121 45.236 amean 39.459 39.459 39.459 amin 39.092 39.112 39.069 amax 39.864 39.847 39.891 emean 0.114 0.115 0.113 emin 0.094 0.096 0.092 emax 0.137 0.134 0.136 imean 9.381 9.371 9.387 imin 8.667 8.693 8.648 imax 10.108 10.112 10.119 excite_mean 0.199 0.200 0.198 fracstop 1.000 1.000 1.000 cjmean 3.007 3.007 3.007 libcent 0 179.7 181.4 180.8 libamp 0 61.7 47.8 74.8 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 178.8 179.7 179.7 kozaiamp 180.0 180.0 180.0