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: 15UK84 # Created Wed Dec 25 02:10:27 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 41 observations of 41 # Arc: 7.11y # First observation: 2014/10/03 # Last observation: 2021/11/11 # Chi-squared of fit: 11.18 DOF: 76 RMS: 0.09 # Min/Max residuals: -0.23 0.23 # Exact a, adot, b, bdot, g, gdot: 1.638572E-05 2.732509E-02 -5.041149E-06 -8.267072E-03 2.609921E-02 3.653615E-03 # Covariance matrix: 1.5904E-13 -8.7400E-14 -2.2107E-14 2.1033E-14 1.1371E-14 -3.9165E-13 -8.7400E-14 9.0244E-14 2.2318E-14 -2.4404E-14 5.9236E-14 4.4600E-13 -2.2107E-14 2.2318E-14 9.6328E-14 -3.2128E-14 4.2742E-15 1.3459E-13 2.1033E-14 -2.4404E-14 -3.2128E-14 1.9465E-14 -1.3807E-14 -1.4152E-13 1.1371E-14 5.9236E-14 4.2742E-15 -1.3807E-14 2.1507E-13 2.3119E-13 -3.9165E-13 4.4600E-13 1.3459E-13 -1.4152E-13 2.3119E-13 2.5994E-12 # lat0 lon0 xBary yBary zBary JD0 -17.078323 19.818059 0.176698 -0.289763 -0.943726 2456933.760838 # Heliocentric elements and errors Epoch: 2456934.5000 = 2014/10/04 Mean Anomaly: 22.66238 +/- 0.008 Argument of Peri: 188.80264 +/- 0.014 Long of Asc Node: 156.39262 +/- 0.000 Inclination: 23.62319 +/- 0.000 Eccentricity: 0.23743674 +/- 0.0001 Semi-Major Axis: 49.50750981 +/- 0.0045 Time of Perihelion: 2448924.9509 +/- 3.0 Perihelion: 37.75260822 +/- 0.0048 Aphelion: 61.26241140 +/- 0.0065 Period (y) 348.3492 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.44251616 +/- 0.0006 Ecliptic Y 12.58774198 +/- 0.0002 Ecliptic Z -11.25262212 +/- 0.0002 Ecliptic XDOT -0.00087135 +/- 0.0000 Ecliptic YDOT 0.00272989 +/- 0.0000 Ecliptic ZDOT -0.00094144 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.25861049 +/- 0.0006 Geocenter to KBO 38.31529209 +/- 0.0007 # Hcoef: 6.53
The following table shows the complete astrometric record for 15UK84. 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 (15UK84) followed by the observatory code and reference code for the source of the astrometry.
2014 10 03.26006 01 38 54.729 -08 04 42.98 21.5z 15UK84 W84 C~4yYc 2014 10 03.26117 01 38 54.708 -08 04 42.95 20.7Y 15UK84 W84 C~4yYc 2014 10 03.26228 01 38 54.722 -08 04 43.16 21.9i 15UK84 W84 C~4yYc 2014 10 14.22604 01 38 03.924 -08 11 06.82 22.9i 15UK84 W84 C~4yYc 2014 12 13.14801 01 34 06.871 -08 25 17.64 23.2g 15UK84 W84 C~4yYc 2014 12 24.12101 01 33 48.003 -08 23 12.34 22.8r 15UK84 W84 C~4yYc 2015 08 18.40912 01 47 54.168 -07 24 57.62 22.3r 15UK84 W84 C~4yYc 2015 08 18.41048 01 47 54.160 -07 24 57.55 22.5g 15UK84 W84 C~4yYc 2015 09 23.24934 01 46 11.211 -07 48 52.37 22.3z 15UK84 W84 C~4yYc 2015 10 17.18514 01 44 24.287 -08 03 20.78 22.3r 15UK84 W84 C~4yYc 2015 10 23.19510 01 43 55.718 -08 06 22.30 22.2z 15UK84 W84 C~4yYc 2015 11 01.21126 01 43 13.214 -08 10 17.79 22.1z 15UK84 W84 C~4yYc 2015 11 15.17967 01 42 10.916 -08 14 41.37 22.0z 15UK84 W84 C~4yYc 2015 11 15.18103 01 42 10.913 -08 14 41.44 22.4i 15UK84 W84 C~4yYc 2015 11 15.18241 01 42 10.905 -08 14 41.51 22.6r 15UK84 W84 C~4yYc 2015 11 15.18378 01 42 10.905 -08 14 41.45 23.0g 15UK84 W84 C~4yYc 2015 11 20.12503 01 41 50.703 -08 15 42.18 22.3z 15UK84 W84 C~4yYc 2016 09 14.28589 01 53 10.366 -07 33 48.93 21.9z 15UK84 W84 C~4yYc 2016 10 03.25696 01 51 54.660 -07 46 12.96 22.0i 15UK84 W84 C~4yYc 2016 10 03.258333 01 51 54.65 -07 46 12.7 22.6r 15UK84 W84 C~2Ckn 2016 10 03.259711 01 51 54.63 -07 46 12.8 23.1g 15UK84 W84 C~2Ckn 2016 10 03.25972 01 51 54.647 -07 46 13.02 23.1g 15UK84 W84 C~4yYc 2016 10 22.28291 01 50 26.385 -07 56 47.32 22.2i 15UK84 W84 C~4yYc 2016 10 22.28786 01 50 26.353 -07 56 47.69 22.4z 15UK84 W84 C~4yYc 2016 10 23.201389 01 50 22.01 -07 57 13.7 22.7r 15UK84 W84 C~2Ckn 2016 10 23.20140 01 50 22.017 -07 57 13.89 22.6r 15UK84 W84 C~4yYc 2016 10 23.20277 01 50 22.017 -07 57 13.97 23.0g 15UK84 W84 C~4yYc 2016 10 23.20414 01 50 22.005 -07 57 14.00 22.6r 15UK84 W84 C~4yYc 2016 10 23.20551 01 50 21.995 -07 57 14.00 23.3g 15UK84 W84 C~4yYc 2016 12 04.05703 01 47 26.042 -08 07 39.64 22.3z 15UK84 W84 C~4yYc 2017 11 16.12483 01 54 59.533 -07 55 56.48 22.5r 15UK84 W84 C~4yYc 2017 11 16.12620 01 54 59.523 -07 55 56.47 23.0g 15UK84 W84 C~4yYc 2017 12 07.15681 01 53 41.033 -07 58 02.03 22.2Y 15UK84 W84 C~4yYc 2017 12 22.11777 01 53 03.952 -07 56 09.57 22.6r 15UK84 W84 C~4yYc 2017 12 22.11915 01 53 03.948 -07 56 09.56 23.3g 15UK84 W84 C~4yYc 2017 12 25.11530 01 52 58.815 -07 55 27.24 22.6z 15UK84 W84 C~4yYc 2018 11 30.11232 02 00 26.857 -07 48 00.29 22.7r 15UK84 W84 C~4yYc 2018 11 30.11375 02 00 26.856 -07 48 00.26 23.2g 15UK84 W84 C~4yYc 2021 11 11.356399 02 20 34.881 -07 12 48.52 23.0w 15UK84 F51 C~5BaV 2021 11 11.381875 02 20 34.776 -07 12 48.52 22.5w 15UK84 F51 C~5BaV 2021 11 11.394587 02 20 34.711 -07 12 48.96 22.6w 15UK84 F51 C~5BaV
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 0.02
2 0.0000 0.00 -0.21 0.00 0.09
3 0.0000 0.00 0.08 0.00 -0.08
4 0.0300 0.00 0.08 0.00 0.08
5 0.1941 0.00 0.13 0.00 -0.13
6 0.2241 0.00 0.02 0.00 -0.05
7 0.8738 0.00 -0.00 0.00 0.08
8 0.8738 0.00 -0.09 0.00 0.20
9 0.9719 0.00 0.00 0.00 0.13
10 1.0374 0.00 -0.00 0.00 -0.07
11 1.0539 0.00 -0.12 0.00 0.02
12 1.0786 0.00 0.01 0.00 -0.06
13 1.1168 0.00 -0.00 0.00 -0.01
14 1.1168 0.00 0.04 0.00 -0.07
15 1.1168 0.00 0.01 0.00 -0.12
16 1.1168 0.00 0.10 0.00 -0.04
17 1.1304 0.00 -0.03 0.00 -0.09
18 1.9494 0.00 0.06 0.00 0.16
19 2.0014 0.00 0.08 0.00 -0.11
20 2.0014 0.00 0.02 0.00 0.20
21 2.0014 0.00 -0.19 0.00 0.15
22 2.0014 0.00 0.07 0.00 -0.07
23 2.0535 0.00 0.06 0.00 0.14
24 2.0535 0.00 -0.06 0.00 -0.09
25 2.0560 0.00 -0.12 0.00 0.16
26 2.0560 0.00 -0.02 0.00 -0.02
27 2.0560 0.00 0.08 0.00 -0.07
28 2.0560 0.00 0.00 0.00 -0.06
29 2.0560 0.00 -0.05 0.00 -0.02
30 2.1706 0.00 0.12 0.00 -0.10
31 3.1208 0.00 0.09 0.00 -0.03
32 3.1208 0.00 0.03 0.00 -0.00
33 3.1784 0.00 0.09 0.00 0.02
34 3.2193 0.00 0.02 0.00 -0.01
35 3.2193 0.00 0.00 0.00 -0.02
36 3.2275 0.00 -0.08 0.00 0.03
37 4.1584 0.00 -0.03 0.00 -0.06
38 4.1584 0.00 0.03 0.00 -0.03
39 7.1077 0.00 -0.13 0.00 -0.23
40 7.1078 0.00 0.09 0.00 0.23
41 7.1078 0.00 0.01 0.00 0.02
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.
15UK84 quality flag:2 Type: SCATEXTD SCATEXTD SCATNEAR axisobj 50.035 50.035 50.035 ecceobj 0.246 0.246 0.246 incobj 23.558 23.558 23.558 qmin 36.351 36.350 36.339 qmax 63.407 63.310 63.411 amean 49.605 49.610 49.598 amin 49.157 49.157 49.146 amax 50.140 50.143 50.157 emean 0.248 0.248 0.248 emin 0.231 0.231 0.231 emax 0.265 0.263 0.265 imean 22.338 22.336 22.335 imin 21.766 21.782 21.768 imax 22.779 22.781 22.786 excite_mean 0.454 0.454 0.454 fracstop 1.000 1.000 1.000 cjmean 2.907 2.907 2.907 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 192.9 192.5 193.3 kozaiamp 180.0 179.9 180.0