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: 15KB176
# Created Fri Nov 22 02:10:24 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 3.25y
# First observation: 2014/05/30
# Last observation: 2017/08/31
Preliminary a, adot, b, bdot, g, gdot:
0.000312 0.026786 0.000169 0.013588 0.027095 0.000000
# Chi-squared of fit: 11.72 DOF: 50 RMS: 0.11
# Min/Max residuals: -0.28 0.30
# Exact a, adot, b, bdot, g, gdot:
1.551315E-05 2.735158E-02 8.062285E-06 1.388094E-02 2.752495E-02 1.430787E-03
# Covariance matrix:
3.1327E-13 -3.7813E-13 5.7507E-14 -1.3052E-13 -1.4075E-13 -3.6677E-12
-3.7813E-13 7.0708E-13 -1.3431E-13 3.0409E-13 2.5998E-13 8.6172E-12
5.7507E-14 -1.3431E-13 2.2705E-13 -1.8698E-13 -5.9381E-14 -1.9049E-12
-1.3052E-13 3.0409E-13 -1.8698E-13 2.5187E-13 1.3603E-13 4.3130E-12
-1.4075E-13 2.5998E-13 -5.9381E-14 1.3603E-13 2.6264E-13 3.6994E-12
-3.6677E-12 8.6172E-12 -1.9049E-12 4.3130E-12 3.6994E-12 1.2221E-10
# lat0 lon0 xBary yBary zBary JD0
6.161114 -127.156164 -0.279475 0.104752 -0.969900 2456807.882338
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 13.86193 +/- 0.081
Argument of Peri: 352.78904 +/- 0.122
Long of Asc Node: 221.62291 +/- 0.000
Inclination: 27.50043 +/- 0.001
Eccentricity: 0.18247089 +/- 0.0002
Semi-Major Axis: 45.18987942 +/- 0.0047
Time of Perihelion: 2452528.0063 +/- 25.0
Perihelion: 36.94404199 +/- 0.0087
Aphelion: 53.43571685 +/- 0.0096
Period (y) 303.7876 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.18444493 +/- 0.0004
Ecliptic Y -29.73281623 +/- 0.0005
Ecliptic Z 3.89952665 +/- 0.0001
Ecliptic XDOT 0.00216709 +/- 0.0000
Ecliptic YDOT -0.00164153 +/- 0.0000
Ecliptic ZDOT 0.00138813 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.30142445 +/- 0.0005
Geocenter to KBO 36.33067740 +/- 0.0007
# Hcoef: 9.06
The following table shows the complete astrometric record for 15KB176. 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 (15KB176) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.38156 15 28 09.433 -12 31 00.46 25.0r 15KB176 568 C~2nvj 2014 05 31.42022 15 28 04.205 -12 30 35.78 24.5r 15KB176 568 C~2nvj 2014 06 01.30833 15 27 59.775 -12 30 14.69 25.0r 15KB176 568 C~2nvj 2014 06 01.35165 15 27 59.549 -12 30 13.65 24.8r 15KB176 568 C~2nvj 2015 02 23.63194 15 40 43.843 -12 49 05.02 25.0r 15KB176 568 C~2nvj 2015 03 22.51359 15 40 16.503 -12 39 14.87 24.6r 15KB176 568 C~2nvj 2015 04 18.53176 15 38 42.043 -12 26 44.08 25.4r 15KB176 568 C~2nvj 2015 05 17.40428 15 36 18.385 -12 13 07.08 24.4r 15KB176 568 C~2nvj 2015 05 17.44599 15 36 18.164 -12 13 06.35 24.8r 15KB176 568 C~2nvj 2015 05 24.38965 15 35 41.796 -12 10 07.19 24.7r 15KB176 568 C~2nvj 2015 05 24.43575 15 35 41.541 -12 10 05.82 24.6r 15KB176 568 C~2nvj 2015 05 24.47682 15 35 41.324 -12 10 05.02 24.6r 15KB176 568 C~2nvj 2015 05 26.46493 15 35 31.021 -12 09 15.99 25.0r 15KB176 568 C~2nvj 2015 06 20.35717 15 33 32.218 -12 00 41.32 24.9r 15KB176 568 C~2nvj 2015 06 20.39803 15 33 32.036 -12 00 40.66 24.7r 15KB176 568 C~2nvj 2015 06 23.41822 15 33 19.658 -11 59 52.98 25.2r 15KB176 568 C~2nvj 2015 07 11.29135 15 32 19.847 -11 56 26.32 24.6r 15KB176 568 C~2nvj 2015 07 18.36074 15 32 03.502 -11 55 42.01 25.2r 15KB176 568 C~2nvj 2016 02 06.63317 15 47 05.695 -12 29 21.20 24.7w 15KB176 568 C~2nvj 2016 02 12.61871 15 47 18.661 -12 28 04.73 24.7w 15KB176 568 C~2nvj 2016 03 15.62284 15 47 21.444 -12 17 35.17 25.1w 15KB176 568 C~2nvj 2016 04 03.54664 15 46 33.812 -12 09 14.23 25.1w 15KB176 568 C~2nvj 2016 04 08.59620 15 46 15.896 -12 06 51.90 25.5w 15KB176 568 C~2nvj 2016 04 29.49739 15 44 44.390 -11 56 51.32 24.0w 15KB176 568 C~2nvj 2016 05 04.47001 15 44 19.633 -11 54 31.01 25.2w 15KB176 568 C~2nvj 2016 07 04.30222 15 39 32.699 -11 33 52.40 25.4w 15KB176 568 C~2nvj 2016 07 05.37053 15 39 29.217 -11 33 42.32 25.5w 15KB176 568 C~2nvj 2017 08 31.25681 15 45 41.785 -11 12 35.76 23.2w 15KB176 568 C~2nvj
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 0.04 0.00 -0.02
2 0.0028 -80.28 0.08 5.08 -0.13
3 0.0053 -148.35 0.06 9.54 -0.02
4 0.0054 -151.81 -0.04 9.74 -0.01
5 0.7372 10988.35 0.02 1601.72 -0.09
6 0.8108 10459.69 -0.06 2082.09 0.01
7 0.8847 8935.30 -0.06 2485.86 -0.13
8 0.9638 6692.97 -0.10 2779.03 0.12
9 0.9639 6689.65 0.02 2778.97 -0.24
10 0.9829 6128.49 0.01 2825.41 0.13
11 0.9830 6124.52 -0.19 2825.85 0.30
12 0.9831 6121.24 -0.13 2825.86 0.09
13 0.9886 5962.67 0.11 2837.28 0.09
14 1.0567 4146.22 0.12 2917.75 0.09
15 1.0569 4143.47 0.02 2917.75 0.06
16 1.0651 3955.63 -0.13 2920.16 0.02
17 1.1141 3053.69 -0.28 2908.25 0.00
18 1.1334 2810.16 0.28 2893.05 -0.03
19 1.6899 16175.29 -0.15 4055.70 0.04
20 1.7063 16343.84 0.10 4174.10 -0.09
21 1.7940 16239.50 -0.05 4798.46 -0.04
22 1.8458 15440.44 0.04 5126.58 0.15
23 1.8596 15150.44 0.19 5204.79 -0.16
24 1.9168 13698.42 0.05 5479.36 -0.16
25 1.9304 13310.73 0.04 5531.59 -0.09
26 2.0970 8909.54 0.10 5747.74 0.07
27 2.0999 8857.32 0.04 5745.42 0.03
28 3.2550 13909.70 -0.11 8267.49 -0.01
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.
15KB176 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.906 44.922 44.890 ecceobj 0.177 0.177 0.176 incobj 27.569 27.570 27.569 qmin 35.679 35.696 35.613 qmax 55.155 55.170 55.199 amean 45.227 45.245 45.208 amin 44.847 44.875 44.837 amax 45.663 45.686 45.645 emean 0.192 0.192 0.192 emin 0.174 0.174 0.174 emax 0.208 0.208 0.209 imean 28.073 28.078 28.060 imin 27.628 27.630 27.617 imax 28.515 28.506 28.493 excite_mean 0.508 0.508 0.508 fracstop 1.000 1.000 1.000 cjmean 2.787 2.787 2.788 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 163.9 164.0 163.9 kozaiamp 180.0 179.9 180.0