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: 15KO175
# Created Sun Dec 22 02:10:25 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 2.44y
# First observation: 2015/03/19
# Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000107 0.020717 -0.000057 -0.011890 0.024706 0.000000
# Chi-squared of fit: 5.68 DOF: 50 RMS: 0.08
# Min/Max residuals: -0.19 0.13
# Exact a, adot, b, bdot, g, gdot:
1.329778E-05 2.067965E-02 -8.178707E-06 -1.203472E-02 2.470112E-02 2.443906E-03
# Covariance matrix:
1.5529E-13 -1.5763E-14 8.1823E-15 -5.0607E-14 1.1331E-13 2.0737E-12
-1.5763E-14 2.2591E-13 3.3204E-14 -1.5938E-13 1.5661E-13 6.2803E-12
8.1823E-15 3.3204E-14 1.1455E-13 -1.2301E-13 3.0884E-14 1.9546E-12
-5.0607E-14 -1.5938E-13 -1.2301E-13 3.3390E-13 -1.6630E-13 -8.9971E-12
1.1331E-13 1.5661E-13 3.0884E-14 -1.6630E-13 2.6469E-13 6.6796E-12
2.0737E-12 6.2803E-12 1.9546E-12 -8.9971E-12 6.6796E-12 3.5182E-10
# lat0 lon0 xBary yBary zBary JD0
8.484290 -124.114398 0.835830 0.079064 -0.529248 2457101.141658
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 93.89363 +/- 0.158
Argument of Peri: 59.69953 +/- 0.139
Long of Asc Node: 68.87171 +/- 0.000
Inclination: 31.01294 +/- 0.001
Eccentricity: 0.08848975 +/- 0.0007
Semi-Major Axis: 40.46894857 +/- 0.0063
Time of Perihelion: 2432575.1648 +/- 40.9
Perihelion: 36.88786158 +/- 0.0303
Aphelion: 44.05003556 +/- 0.0306
Period (y) 257.4489 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -23.45168332 +/- 0.0005
Ecliptic Y -33.12486484 +/- 0.0007
Ecliptic Z 5.97263924 +/- 0.0001
Ecliptic XDOT 0.00163364 +/- 0.0000
Ecliptic YDOT -0.00167605 +/- 0.0000
Ecliptic ZDOT -0.00127927 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.02329266 +/- 0.0006
Geocenter to KBO 40.48399856 +/- 0.0008
# Hcoef: 8.15
The following table shows the complete astrometric record for 15KO175. 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 (15KO175) followed by the observatory code and reference code for the source of the astrometry.
2015 03 19.64088 15 42 22.759 -10 58 25.60 23.5r 15KO175 568 C~2nvh 2015 03 22.56046 15 42 15.909 -10 57 49.92 24.4r 15KO175 568 C~2nvh 2015 03 22.62952 15 42 15.731 -10 57 49.01 24.4r 15KO175 568 C~2nvh 2015 04 13.57241 15 41 02.727 -10 52 46.98 24.4r 15KO175 568 C~2nvh 2015 04 13.61353 15 41 02.558 -10 52 46.43 24.2r 15KO175 568 C~2nvh 2015 04 18.58247 15 40 41.598 -10 51 34.50 24.3r 15KO175 568 C~2nvh 2015 04 18.59119 15 40 41.566 -10 51 34.66 24.4r 15KO175 568 C~2nvh 2015 05 21.34311 15 38 01.766 -10 44 34.72 24.4r 15KO175 568 C~2nvh 2015 05 21.38417 15 38 01.556 -10 44 34.37 24.3r 15KO175 568 C~2nvh 2015 05 21.42550 15 38 01.334 -10 44 34.07 24.1r 15KO175 568 C~2nvh 2015 05 22.50179 15 37 55.840 -10 44 23.32 24.5r 15KO175 568 C~2nvh 2015 06 20.38172 15 35 38.668 -10 41 43.68 24.4r 15KO175 568 C~2nvh 2015 06 20.42253 15 35 38.487 -10 41 43.62 24.2r 15KO175 568 C~2nvh 2015 06 23.44287 15 35 26.117 -10 41 43.29 24.5r 15KO175 568 C~2nvh 2015 07 18.38638 15 34 07.180 -10 43 52.82 24.7r 15KO175 568 C~2nvh 2016 02 06.62912 15 46 33.118 -11 58 17.76 24.4w 15KO175 568 C~2nvh 2016 02 12.61467 15 46 42.729 -11 58 19.15 24.9w 15KO175 568 C~2nvh 2016 03 15.62284 15 46 33.547 -11 55 14.37 24.6w 15KO175 568 C~2nvh 2016 04 03.53046 15 45 43.379 -11 51 34.62 24.4w 15KO175 568 C~2nvh 2016 04 08.58000 15 45 25.266 -11 50 28.59 24.6w 15KO175 568 C~2nvh 2016 04 29.45756 15 43 54.721 -11 45 49.66 25.1w 15KO175 568 C~2nvh 2016 05 04.39265 15 43 30.637 -11 44 46.54 24.5w 15KO175 568 C~2nvh 2016 05 30.46605 15 41 18.415 -11 40 17.50 24.5w 15KO175 568 C~2nvh 2016 07 04.30222 15 38 48.223 -11 39 04.19 23.5w 15KO175 568 C~2nvh 2016 07 05.37053 15 38 44.694 -11 39 08.62 24.2w 15KO175 568 C~2nvh 2017 03 30.57730 15 50 03.270 -12 48 29.05 23.8w 15KO175 568 C~2nvh 2017 08 20.25685 15 41 45.075 -12 44 23.05 24.7w 15KO175 568 C~2nvh 2017 08 26.26800 15 41 50.872 -12 46 24.74 24.6w 15KO175 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 -0.01 0.00 0.10
2 0.0080 -106.34 0.03 11.82 0.01
3 0.0082 -109.10 0.01 12.11 0.05
4 0.0683 -1224.88 -0.08 61.22 0.10
5 0.0684 -1227.43 -0.04 61.19 0.06
6 0.0820 -1544.47 -0.17 60.68 0.08
7 0.0820 -1544.89 -0.01 60.42 -0.17
8 0.1717 -3933.38 -0.00 -71.64 0.08
9 0.1718 -3936.47 0.05 -72.02 0.03
10 0.1719 -3939.72 -0.03 -72.48 -0.10
11 0.1748 -4021.01 -0.04 -80.71 0.02
12 0.2539 -6025.88 0.12 -393.99 -0.04
13 0.2540 -6028.49 0.02 -394.56 -0.04
14 0.2623 -6206.05 0.13 -436.69 -0.19
15 0.3306 -7308.34 -0.10 -834.37 -0.09
16 0.8870 4396.48 0.09 -2670.24 -0.07
17 0.9034 4534.32 0.05 -2640.06 0.06
18 0.9911 4361.54 -0.00 -2490.01 -0.15
19 1.0428 3594.30 0.01 -2440.75 0.04
20 1.0566 3320.27 0.08 -2436.09 0.06
21 1.1138 1961.82 0.06 -2463.80 -0.00
22 1.1273 1602.98 -0.09 -2482.28 0.07
23 1.1987 -349.60 -0.05 -2661.55 -0.10
24 1.2941 -2514.41 0.02 -3096.06 0.13
25 1.2970 -2563.85 0.02 -3112.32 0.11
26 2.0313 8072.04 -0.04 -4925.25 0.04
27 2.4219 908.03 0.01 -6318.60 -0.13
28 2.4384 1018.39 -0.06 -6417.88 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.
15KO175 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.163 40.182 40.144 ecceobj 0.086 0.088 0.084 incobj 31.070 31.070 31.070 qmin 36.348 36.242 36.368 qmax 44.729 44.979 44.634 amean 40.433 40.424 40.387 amin 40.094 40.084 40.073 amax 40.765 40.786 40.717 emean 0.082 0.083 0.082 emin 0.066 0.068 0.069 emax 0.097 0.103 0.097 imean 29.644 29.637 29.618 imin 29.255 29.236 29.240 imax 30.035 30.005 29.997 excite_mean 0.501 0.502 0.501 fracstop 1.000 1.000 1.000 cjmean 2.752 2.752 2.752 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 174.8 173.6 172.9 kozaiamp 180.0 179.9 180.0