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: 15KM175
# Created Sun Nov 24 02:10:21 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 2.09y
# First observation: 2015/02/25
# Last observation: 2017/03/28
Preliminary a, adot, b, bdot, g, gdot:
-0.000172 0.023727 0.000018 -0.000422 0.023653 0.000000
# Chi-squared of fit: 9.05 DOF: 52 RMS: 0.10
# Min/Max residuals: -0.22 0.25
# Exact a, adot, b, bdot, g, gdot:
1.540003E-05 2.343474E-02 -7.049209E-07 -4.139477E-04 2.348690E-02 9.094994E-04
# Covariance matrix:
2.6166E-13 -9.9612E-14 -1.2864E-14 4.4232E-15 1.5934E-13 2.1398E-12
-9.9612E-14 4.2254E-13 -1.0726E-14 1.1066E-14 1.5080E-13 1.0436E-11
-1.2864E-14 -1.0726E-14 1.3042E-13 -1.2013E-13 -2.0103E-14 -5.7888E-13
4.4232E-15 1.1066E-14 -1.2013E-13 1.8013E-13 1.0820E-14 5.1000E-13
1.5934E-13 1.5080E-13 -2.0103E-14 1.0820E-14 2.5850E-13 7.9262E-12
2.1398E-12 1.0436E-11 -5.7888E-13 5.1000E-13 7.9262E-12 4.6095E-10
# lat0 lon0 xBary yBary zBary JD0
8.250390 -125.073145 0.966969 0.028425 -0.195167 2457079.145188
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 11.71598 +/- 0.547
Argument of Peri: 81.89568 +/- 0.653
Long of Asc Node: 137.75036 +/- 0.007
Inclination: 8.25270 +/- 0.000
Eccentricity: 0.08346547 +/- 0.0003
Semi-Major Axis: 46.57516403 +/- 0.0051
Time of Perihelion: 2453292.1156 +/- 176.3
Perihelion: 42.68774589 +/- 0.0140
Aphelion: 50.46258216 +/- 0.0143
Period (y) 317.8629 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.11965089 +/- 0.0005
Ecliptic Y -34.09073135 +/- 0.0007
Ecliptic Z 6.10974937 +/- 0.0001
Ecliptic XDOT 0.00216787 +/- 0.0000
Ecliptic YDOT -0.00166690 +/- 0.0000
Ecliptic ZDOT -0.00003245 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.78438807 +/- 0.0007
Geocenter to KBO 42.57692655 +/- 0.0009
# Hcoef: 8.37
The following table shows the complete astrometric record for 15KM175. 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 (15KM175) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.64441 15 38 23.930 -10 58 59.50 24.7r 15KM175 568 C~2nvh 2015 03 22.55638 15 37 55.795 -10 52 42.48 24.2r 15KM175 568 C~2nvh 2015 04 13.56832 15 36 49.487 -10 45 42.95 24.3r 15KM175 568 C~2nvh 2015 04 13.60943 15 36 49.332 -10 45 42.37 24.6r 15KM175 568 C~2nvh 2015 04 18.57835 15 36 30.232 -10 44 04.03 24.3r 15KM175 568 C~2nvh 2015 05 21.33898 15 34 04.531 -10 34 08.40 25.1r 15KM175 568 C~2nvh 2015 05 21.38005 15 34 04.335 -10 34 07.82 24.9r 15KM175 568 C~2nvh 2015 05 21.42139 15 34 04.147 -10 34 07.13 24.6r 15KM175 568 C~2nvh 2015 05 22.49770 15 33 59.142 -10 33 50.73 25.1r 15KM175 568 C~2nvh 2015 05 25.48844 15 33 45.357 -10 33 06.45 25.1r 15KM175 568 C~2nvh 2015 06 20.37754 15 31 55.697 -10 28 32.28 24.9r 15KM175 568 C~2nvh 2015 06 20.41847 15 31 55.557 -10 28 31.94 24.3r 15KM175 568 C~2nvh 2015 06 23.43876 15 31 44.593 -10 28 14.59 24.6r 15KM175 568 C~2nvh 2015 07 11.32142 15 30 51.318 -10 27 42.10 24.2r 15KM175 568 C~2nvh 2015 07 12.30139 15 30 49.037 -10 27 43.74 25.2r 15KM175 568 C~2nvh 2015 07 18.38184 15 30 36.594 -10 28 03.31 24.5r 15KM175 568 C~2nvh 2016 02 05.64703 15 43 19.692 -11 21 43.87 24.8w 15KM175 568 C~2nvh 2016 02 11.65894 15 43 30.453 -11 21 09.63 25.3w 15KM175 568 C~2nvh 2016 02 12.59849 15 43 31.833 -11 21 03.13 26.1w 15KM175 568 C~2nvh 2016 03 15.59026 15 43 28.408 -11 14 39.10 24.5w 15KM175 568 C~2nvh 2016 03 17.60989 15 43 25.008 -11 14 06.25 24.4w 15KM175 568 C~2nvh 2016 04 03.53046 15 42 43.757 -11 09 05.31 24.6w 15KM175 568 C~2nvh 2016 04 08.58000 15 42 27.384 -11 07 29.33 24.7w 15KM175 568 C~2nvh 2016 04 29.45756 15 41 05.096 -11 00 50.44 25.1w 15KM175 568 C~2nvh 2016 05 04.39265 15 40 43.181 -10 59 20.20 24.4w 15KM175 568 C~2nvh 2016 05 30.47009 15 38 42.956 -10 52 31.26 25.0w 15KM175 568 C~2nvh 2016 07 04.30222 15 36 28.656 -10 48 22.11 24.3w 15KM175 568 C~2nvh 2016 07 05.37053 15 36 25.575 -10 48 21.23 24.6w 15KM175 568 C~2nvh 2017 03 28.60286 15 48 23.795 -11 30 53.34 25.6w 15KM175 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 0.08 0.00 0.09
2 0.0682 -490.82 -0.07 270.08 0.03
3 0.1285 -1538.77 -0.03 449.74 0.08
4 0.1286 -1541.12 0.04 449.77 -0.14
5 0.1422 -1837.82 0.15 479.45 -0.06
6 0.2319 -4066.01 0.09 552.99 0.04
7 0.2320 -4068.96 0.07 552.87 -0.01
8 0.2321 -4071.81 0.16 552.89 0.06
9 0.2351 -4147.43 -0.05 551.39 -0.06
10 0.2432 -4355.50 -0.08 546.36 -0.03
11 0.3141 -5992.70 -0.20 429.04 -0.05
12 0.3142 -5994.79 -0.00 428.88 0.07
13 0.3225 -6156.13 -0.00 407.23 0.07
14 0.3715 -6927.81 -0.00 251.35 0.01
15 0.3741 -6960.13 -0.13 241.72 0.11
16 0.3908 -7133.88 0.05 178.84 -0.04
17 0.9446 4550.47 -0.06 -322.97 0.11
18 0.9610 4696.78 -0.05 -253.43 -0.07
19 0.9636 4715.06 0.02 -242.46 -0.10
20 1.0512 4578.13 0.11 119.97 0.00
21 1.0567 4521.90 -0.10 140.52 -0.13
22 1.1030 3861.84 0.06 294.47 -0.17
23 1.1169 3605.20 -0.14 332.61 -0.00
24 1.1740 2334.29 -0.22 442.06 0.25
25 1.1875 1999.46 0.04 455.38 0.07
26 1.2589 182.17 -0.04 442.79 -0.20
27 1.3543 -1799.91 0.14 223.10 -0.05
28 1.3572 -1844.25 0.09 213.32 -0.04
29 2.0861 9034.62 0.07 155.55 0.16
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.
15KM175 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.173 46.191 46.156 ecceobj 0.075 0.076 0.075 incobj 8.254 8.254 8.254 qmin 42.236 42.203 42.238 qmax 51.069 51.157 51.056 amean 46.543 46.560 46.525 amin 46.161 46.175 46.144 amax 46.944 46.963 46.929 emean 0.077 0.078 0.077 emin 0.066 0.066 0.065 emax 0.089 0.090 0.088 imean 7.073 7.072 7.074 imin 6.733 6.732 6.735 imax 7.423 7.425 7.424 excite_mean 0.145 0.146 0.145 fracstop 1.000 1.000 1.000 cjmean 3.107 3.107 3.107 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 178.1 178.2 178.5 kozaiamp 180.0 180.0 179.9