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: 15KE174
# Created Sun Dec 22 02:10:24 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 8.22y
# First observation: 2015/02/25
# Last observation: 2023/05/17
# Chi-squared of fit: 6.50 DOF: 46 RMS: 0.09
# Min/Max residuals: -0.15 0.32
# Exact a, adot, b, bdot, g, gdot:
1.658219E-05 2.656140E-02 6.439421E-06 1.091665E-02 2.540669E-02 2.096804E-03
# Covariance matrix:
2.2503E-13 3.5497E-14 -2.7836E-14 1.8466E-14 1.9160E-13 2.1839E-13
3.5497E-14 1.7823E-13 -6.4223E-14 7.3078E-14 1.9512E-13 8.1859E-13
-2.7836E-14 -6.4223E-14 1.0897E-13 -4.6423E-14 -8.2605E-14 -3.1351E-13
1.8466E-14 7.3078E-14 -4.6423E-14 4.4301E-14 8.0305E-14 3.6180E-13
1.9160E-13 1.9512E-13 -8.2605E-14 8.0305E-14 3.6191E-13 9.1150E-13
2.1839E-13 8.1859E-13 -3.1351E-13 3.6180E-13 9.1150E-13 4.0483E-12
# lat0 lon0 xBary yBary zBary JD0
8.745800 -125.980208 0.963741 0.032425 -0.209950 2457079.141088
# Heliocentric elements and errors
Epoch: 2457078.5000 = 2015/02/25
Mean Anomaly: 6.95820 +/- 0.009
Argument of Peri: 8.53663 +/- 0.018
Long of Asc Node: 212.55832 +/- 0.000
Inclination: 24.04731 +/- 0.000
Eccentricity: 0.29254752 +/- 0.0001
Semi-Major Axis: 55.61439063 +/- 0.0059
Time of Perihelion: 2454150.4824 +/- 3.9
Perihelion: 39.34453833 +/- 0.0053
Aphelion: 71.88424293 +/- 0.0082
Period (y) 414.7525 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -23.76237571 +/- 0.0006
Ecliptic Y -31.08583493 +/- 0.0007
Ecliptic Z 5.98494908 +/- 0.0001
Ecliptic XDOT 0.00228651 +/- 0.0000
Ecliptic YDOT -0.00172321 +/- 0.0000
Ecliptic ZDOT 0.00119716 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.58277844 +/- 0.0007
Geocenter to KBO 39.35968556 +/- 0.0009
# Hcoef: 7.89
The following table shows the complete astrometric record for 15KE174. 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 (15KE174) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.64031 15 35 19.456 -10 17 26.52 24.9r 15KE174 568 C~2lVI 2015 03 19.63268 15 34 57.396 -10 08 57.03 23.7r 15KE174 568 C~2lVI 2015 03 22.55230 15 34 51.052 -10 07 40.64 23.6r 15KE174 568 C~2lVI 2015 04 13.56418 15 33 41.621 -09 57 31.14 24.1r 15KE174 568 C~2lVI 2015 04 13.60528 15 33 41.458 -09 57 30.09 24.3r 15KE174 568 C~2lVI 2015 04 18.57429 15 33 21.395 -09 55 09.17 23.7r 15KE174 568 C~2lVI 2015 05 21.33472 15 30 48.669 -09 40 49.64 24.1r 15KE174 568 C~2lVI 2015 05 21.37588 15 30 48.456 -09 40 48.76 23.8r 15KE174 568 C~2lVI 2015 05 21.41717 15 30 48.255 -09 40 47.74 23.5r 15KE174 568 C~2lVI 2015 05 22.49362 15 30 43.042 -09 40 23.42 23.4r 15KE174 568 C~2lVI 2015 05 22.51002 15 30 42.967 -09 40 22.94 23.9r 15KE174 568 C~2lVI 2015 05 25.48424 15 30 28.670 -09 39 17.14 23.4r 15KE174 568 C~2lVI 2016 04 03.51011 15 40 56.668 -09 46 52.34 24.1w 15KE174 568 C~2lVI 2016 04 08.55978 15 40 39.662 -09 44 30.64 23.3w 15KE174 568 C~2lVI 2016 04 29.44139 15 39 13.748 -09 34 48.70 24.0w 15KE174 568 C~2lVI 2016 05 04.37647 15 38 50.827 -09 32 37.53 24.4w 15KE174 568 C~2lVI 2016 05 30.49437 15 36 45.178 -09 22 32.69 23.9w 15KE174 568 C~2lVI 2016 07 05.37457 15 34 23.851 -09 15 04.84 24.0w 15KE174 568 C~2lVI 2017 06 28.26890 15 41 26.879 -09 00 56.95 24.5w 15KE174 568 C~2lVI 2017 07 28.28221 15 40 16.039 -09 00 22.28 24.4w 15KE174 568 C~2lVI 2017 07 28.29649 15 40 16.039 -09 00 22.39 24.0w 15KE174 568 C~2lVI 2017 07 29.35734 15 40 14.953 -09 00 28.30 24.4w 15KE174 568 C~2lVI 2017 08 19.26090 15 40 15.181 -09 03 51.49 23.8w 15KE174 568 C~2lVI 2017 08 25.26881 15 40 23.106 -09 05 18.46 23.6w 15KE174 568 C~2lVI 2023 05 17.360260 16 23 58.652 -07 32 27.01 24.0G 15KE174 G37 C~6oDj 2023 05 17.412530 16 23 58.381 -07 32 25.64 15KE174 G37 C~6oDj
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 0.01 0.00 0.07
2 0.0602 0.00 -0.04 0.00 -0.06
3 0.0682 0.00 0.02 0.00 0.00
4 0.1285 0.00 0.02 0.00 0.01
5 0.1286 0.00 0.03 0.00 -0.10
6 0.1422 0.00 0.11 0.00 0.07
7 0.2319 0.00 0.10 0.00 0.03
8 0.2320 0.00 -0.06 0.00 -0.02
9 0.2321 0.00 -0.02 0.00 0.05
10 0.2351 0.00 -0.07 0.00 -0.10
11 0.2351 0.00 0.01 0.00 0.01
12 0.2432 0.00 0.00 0.00 -0.03
13 1.1030 0.00 -0.09 0.00 0.02
14 1.1168 0.00 -0.03 0.00 -0.07
15 1.1740 0.00 0.01 0.00 0.10
16 1.1875 0.00 0.06 0.00 -0.09
17 1.2590 0.00 -0.15 0.00 -0.03
18 1.3572 0.00 -0.06 0.00 0.05
19 2.3371 0.00 -0.06 0.00 0.07
20 2.4193 0.00 -0.15 0.00 0.08
21 2.4193 0.00 0.10 0.00 0.04
22 2.4222 0.00 0.32 0.00 -0.05
23 2.4795 0.00 -0.07 0.00 0.09
24 2.4959 0.00 -0.08 0.00 -0.08
25 8.2210 0.00 0.16 0.00 -0.15
26 8.2211 0.00 -0.14 0.00 0.11
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.
15KE174 quality flag:3 Type: 5:2EEE 5:2EEE 5:2EEE axisobj 55.017 55.017 55.017 ecceobj 0.285 0.285 0.285 incobj 24.135 24.135 24.135 qmin 35.114 35.116 35.112 qmax 76.682 76.678 76.686 amean 55.462 55.461 55.462 amin 54.873 54.873 54.873 amax 56.238 56.238 56.238 emean 0.331 0.331 0.331 emin 0.281 0.281 0.281 emax 0.365 0.365 0.365 imean 22.664 22.666 22.663 imin 21.264 21.266 21.263 imax 24.710 24.710 24.710 excite_mean 0.509 0.509 0.509 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 libcent 0 182.1 182.1 182.1 libamp 0 48.9 48.9 48.9 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 267.3 267.3 267.4 kozaiamp 180.0 180.0 180.0