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: 15KM174
# Created Wed Apr 24 01:17:16 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 3.24y
# First observation: 2014/05/30
# Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
0.000451 0.026829 -0.000128 -0.006208 0.026525 0.000000
# Chi-squared of fit: 7.92 DOF: 62 RMS: 0.09
# Min/Max residuals: -0.23 0.18
# Exact a, adot, b, bdot, g, gdot:
1.631301E-05 2.761056E-02 -3.527931E-06 -6.413201E-03 2.697252E-02 5.213392E-03
# Covariance matrix:
5.2883E-13 -5.7139E-13 -7.2705E-14 1.0970E-13 -2.4264E-13 -4.9096E-12
-5.7139E-13 7.7049E-13 1.0835E-13 -1.6503E-13 2.9515E-13 7.3511E-12
-7.2705E-14 1.0835E-13 2.0918E-13 -1.2096E-13 4.5067E-14 1.1240E-12
1.0970E-13 -1.6503E-13 -1.2096E-13 1.0034E-13 -6.5917E-14 -1.7135E-12
-2.4264E-13 2.9515E-13 4.5067E-14 -6.5917E-14 2.3997E-13 2.9971E-12
-4.9096E-12 7.3511E-12 1.1240E-12 -1.7135E-12 2.9971E-12 7.6291E-11
# lat0 lon0 xBary yBary zBary JD0
6.230617 -125.637969 -0.253727 0.106689 -0.976745 2456807.894078
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 51.28103 +/- 0.014
Argument of Peri: 81.26875 +/- 0.022
Long of Asc Node: 79.13955 +/- 0.001
Inclination: 14.43714 +/- 0.000
Eccentricity: 0.21378305 +/- 0.0003
Semi-Major Axis: 42.27614967 +/- 0.0068
Time of Perihelion: 2442498.5316 +/- 2.0
Perihelion: 33.23822534 +/- 0.0145
Aphelion: 51.31407400 +/- 0.0158
Period (y) 274.8852 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -21.84208293 +/- 0.0004
Ecliptic Y -30.89814722 +/- 0.0006
Ecliptic Z 4.02367642 +/- 0.0001
Ecliptic XDOT 0.00192479 +/- 0.0000
Ecliptic YDOT -0.00212157 +/- 0.0000
Ecliptic ZDOT -0.00058957 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.05209666 +/- 0.0005
Geocenter to KBO 37.07476675 +/- 0.0007
# Hcoef: 8.23
The following table shows the complete astrometric record for 15KM174. 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 (15KM174) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.39330 15 34 13.815 -12 48 52.13 24.1r 15KM174 568 C~2lVJ 2014 05 31.43190 15 34 08.482 -12 48 39.80 23.6r 15KM174 568 C~2lVJ 2015 02 23.64017 15 45 46.319 -13 53 29.95 24.1r 15KM174 568 C~2lVJ 2015 03 19.59955 15 45 25.226 -13 50 06.57 24.0r 15KM174 568 C~2lVJ 2015 03 22.52231 15 45 18.687 -13 49 31.14 24.3r 15KM174 568 C~2lVJ 2015 04 12.55771 15 44 09.688 -13 44 29.92 24.2r 15KM174 568 C~2lVJ 2015 04 18.53999 15 43 44.155 -13 42 54.70 23.4r 15KM174 568 C~2lVJ 2015 05 17.40845 15 41 19.492 -13 35 18.99 23.9r 15KM174 568 C~2lVJ 2015 05 17.45019 15 41 19.268 -13 35 18.31 23.9r 15KM174 568 C~2lVJ 2015 05 17.50220 15 41 18.971 -13 35 17.66 23.8r 15KM174 568 C~2lVJ 2015 05 24.39373 15 40 42.382 -13 33 41.33 23.8r 15KM174 568 C~2lVJ 2015 05 24.43983 15 40 42.143 -13 33 40.75 24.3r 15KM174 568 C~2lVJ 2015 05 24.48091 15 40 41.917 -13 33 40.26 23.9r 15KM174 568 C~2lVJ 2015 05 26.46900 15 40 31.428 -13 33 14.30 24.0r 15KM174 568 C~2lVJ 2015 06 21.38354 15 38 25.183 -13 29 05.16 24.3r 15KM174 568 C~2lVJ 2015 07 10.41926 15 37 15.878 -13 28 18.73 23.9r 15KM174 568 C~2lVJ 2015 07 18.34401 15 36 55.466 -13 28 39.00 23.2r 15KM174 568 C~2lVJ 2016 02 06.65340 15 51 07.388 -14 34 43.45 24.8w 15KM174 568 C~2lVJ 2016 02 12.63894 15 51 19.846 -14 34 51.20 23.8w 15KM174 568 C~2lVJ 2016 03 17.62205 15 51 17.557 -14 31 48.29 24.3w 15KM174 568 C~2lVJ 2016 04 03.56283 15 50 32.929 -14 28 23.65 24.3w 15KM174 568 C~2lVJ 2016 04 08.61237 15 50 14.894 -14 27 13.20 24.8w 15KM174 568 C~2lVJ 2016 04 09.55630 15 50 11.316 -14 26 59.51 24.4w 15KM174 568 C~2lVJ 2016 04 29.51356 15 48 42.804 -14 21 59.63 24.3w 15KM174 568 C~2lVJ 2016 05 04.48619 15 48 17.857 -14 20 44.07 24.7w 15KM174 568 C~2lVJ 2016 05 30.44581 15 46 01.346 -14 14 48.62 24.3w 15KM174 568 C~2lVJ 2016 07 04.33057 15 43 24.606 -14 10 45.93 24.3w 15KM174 568 C~2lVJ 2016 07 05.40293 15 43 20.929 -14 10 44.49 24.4w 15KM174 568 C~2lVJ 2017 04 03.61140 15 56 24.145 -15 09 13.32 24.4w 15KM174 568 C~2lVJ 2017 04 03.61609 15 56 24.142 -15 09 13.21 24.5w 15KM174 568 C~2lVJ 2017 04 04.49990 15 56 21.250 -15 09 02.15 24.4w 15KM174 568 C~2lVJ 2017 05 21.53807 15 52 43.106 -14 58 13.11 23.9w 15KM174 568 C~2lVJ 2017 08 20.28063 15 48 05.441 -14 57 00.82 24.3w 15KM174 568 C~2lVJ 2017 08 24.25065 15 48 09.409 -14 57 59.46 24.8w 15KM174 568 C~2lVJ
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 -0.03 0.00 -0.05
2 0.0028 -78.70 0.17 -6.57 -0.21
3 0.7372 10740.44 0.05 -1427.33 0.05
4 0.8028 10394.24 -0.23 -1298.60 -0.07
5 0.8108 10293.19 0.02 -1285.66 -0.06
6 0.8683 9243.46 -0.06 -1220.72 0.07
7 0.8847 8858.75 0.09 -1212.87 0.06
8 0.9638 6698.69 0.01 -1253.32 -0.01
9 0.9639 6695.35 0.02 -1253.41 0.07
10 0.9640 6690.99 -0.17 -1253.78 -0.09
11 0.9829 6149.13 -0.09 -1283.33 0.17
12 0.9830 6145.60 0.04 -1283.57 0.17
13 0.9831 6142.28 -0.01 -1283.85 0.09
14 0.9886 5987.34 -0.02 -1294.00 0.00
15 1.0595 4137.54 -0.07 -1479.92 -0.00
16 1.1116 3143.51 -0.11 -1671.52 -0.02
17 1.1333 2858.79 0.07 -1761.18 0.17
18 1.6900 15865.61 0.10 -2799.38 0.01
19 1.7064 16044.78 0.07 -2767.04 0.03
20 1.7994 15971.50 0.01 -2595.38 -0.09
21 1.8458 15290.24 0.08 -2538.50 -0.08
22 1.8596 15017.70 0.03 -2527.66 -0.08
23 1.8622 14963.70 -0.01 -2525.81 0.08
24 1.9168 13636.84 0.02 -2518.95 -0.11
25 1.9304 13265.00 0.18 -2526.17 -0.08
26 2.0015 11244.39 -0.02 -2625.37 -0.05
27 2.0970 8964.16 0.03 -2906.69 0.00
28 2.1000 8911.67 -0.01 -2917.51 0.01
29 2.8452 20839.14 -0.16 -3827.16 -0.07
30 2.8452 20839.07 0.01 -3827.06 0.02
31 2.8477 20795.35 -0.05 -3825.21 0.03
32 2.9764 17541.60 -0.01 -3874.37 0.01
33 3.2249 13578.73 0.11 -4693.53 0.06
34 3.2357 13648.23 -0.06 -4738.00 -0.04
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.
15KM174 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 41.971 41.991 41.951 ecceobj 0.208 0.209 0.207 incobj 14.440 14.440 14.440 qmin 30.573 32.797 31.823 qmax 54.797 52.499 53.563 amean 42.327 42.321 42.327 amin 41.829 41.833 41.826 amax 42.921 42.834 42.892 emean 0.203 0.091 0.176 emin 0.083 0.012 0.076 emax 0.278 0.226 0.250 imean 13.088 16.793 14.301 imin 9.036 13.000 11.270 imax 17.386 18.264 17.494 excite_mean 0.312 0.308 0.309 fracstop 1.000 1.000 1.000 cjmean 2.967 2.969 2.969 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 112.2 120.5 111.0 kozaiamp 78.6 179.9 72.2