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: 15VU207 # Created Sat Apr 20 01:17:49 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 47 observations of 47 # Arc: 8.75y # First observation: 2015/01/09 # Last observation: 2023/10/11 # Chi-squared of fit: 7.47 DOF: 88 RMS: 0.07 # Min/Max residuals: -0.20 0.23 # Exact a, adot, b, bdot, g, gdot: 1.770429E-05 3.605718E-02 -1.772412E-06 -3.471865E-03 3.244264E-02 -2.096849E-03 # Covariance matrix: 3.3030E-13 -1.5235E-13 -5.1652E-14 1.7600E-14 -8.1149E-14 -3.6318E-13 -1.5235E-13 8.7679E-14 2.2061E-14 -1.0704E-14 2.4408E-14 2.1170E-13 -5.1652E-14 2.2061E-14 1.1107E-13 -1.8444E-14 4.5731E-14 7.2298E-14 1.7600E-14 -1.0704E-14 -1.8444E-14 5.2769E-15 -3.4086E-15 -2.7173E-14 -8.1149E-14 2.4408E-14 4.5731E-14 -3.4086E-15 1.1100E-13 1.0542E-13 -3.6318E-13 2.1170E-13 7.2298E-14 -2.7173E-14 1.0542E-13 5.5341E-13 # lat0 lon0 xBary yBary zBary JD0 -38.715844 15.382355 -0.980610 0.028984 0.035843 2457031.543468 # Heliocentric elements and errors Epoch: 2457032.5000 = 2015/01/10 Mean Anomaly: 227.76914 +/- 0.042 Argument of Peri: 40.26888 +/- 0.039 Long of Asc Node: 114.25073 +/- 0.000 Inclination: 38.93106 +/- 0.000 Eccentricity: 0.03791590 +/- 0.0000 Semi-Major Axis: 30.01368857 +/- 0.0012 Time of Perihelion: 2479092.6169 +/- 7.3 Perihelion: 28.87569256 +/- 0.0014 Aphelion: 31.15168458 +/- 0.0014 Period (y) 164.4323 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.88120889 +/- 0.0002 Ecliptic Y 7.31416708 +/- 0.0001 Ecliptic Z -19.27900420 +/- 0.0002 Ecliptic XDOT -0.00112089 +/- 0.0000 Ecliptic YDOT 0.00284336 +/- 0.0000 Ecliptic ZDOT -0.00011783 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.80142330 +/- 0.0002 Geocenter to KBO 30.82371716 +/- 0.0003 # Hcoef: 7.15
The following table shows the complete astrometric record for 15VU207. 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 (15VU207) followed by the observatory code and reference code for the source of the astrometry.
2015 01 09.04269 02 00 59.354 -29 26 25.64 22.0i 15VU207 W84 C~55XF 2015 11 01.30570 02 15 23.531 -29 19 03.43 22.1z 15VU207 W84 C~55XF 2015 11 14.12456 02 13 54.236 -29 20 34.14 21.8r 15VU207 W84 C~55XF 2015 11 14.12594 02 13 54.232 -29 20 34.16 22.1g 15VU207 W84 C~55XF 2015 11 18.11945 02 13 27.576 -29 20 11.83 22.0r 15VU207 W84 C~55XF 2015 12 03.16306 02 11 56.260 -29 15 13.94 22.2r 15VU207 W84 C~55XF 2015 12 04.13484 02 11 50.973 -29 14 43.23 22.6g 15VU207 W84 C~55XF 2016 02 05.03596 02 10 16.702 -28 04 54.41 22.1i 15VU207 W84 C~55XF 2016 09 11.20600 02 29 23.820 -27 48 50.59 22.0i 15VU207 W84 C~55XF 2016 09 23.32660 02 28 28.418 -28 02 14.85 22.1r 15VU207 W84 C~55XF 2016 09 24.24961 02 28 23.608 -28 03 12.11 22.4g 15VU207 W84 C~55XF 2016 10 25.30496 02 25 06.251 -28 27 03.32 21.7z 15VU207 W84 C~55XF 2016 12 01.20258 02 20 58.396 -28 27 27.04 22.2r 15VU207 W84 C~55XF 2016 12 01.20393 02 20 58.386 -28 27 27.16 21.7i 15VU207 W84 C~55XF 2016 12 29.16061 02 18 56.753 -28 06 10.55 22.3r 15VU207 W84 C~55XF 2016 12 29.16198 02 18 56.752 -28 06 10.59 22.6g 15VU207 W84 C~55XF 2017 01 30.07362 02 18 41.502 -27 25 38.94 22.1r 15VU207 W84 C~55XF 2017 09 11.39919 02 38 07.616 -26 55 53.36 22.0Y 15VU207 W84 C~55XF 2017 09 12.40216 02 38 03.909 -26 57 03.35 21.9z 15VU207 W84 C~55XF 2017 10 19.30664 02 34 40.227 -27 31 29.26 22.1r 15VU207 W84 C~55XF 2017 11 18.28054 02 31 11.018 -27 39 58.48 21.7i 15VU207 W84 C~55XF 2017 11 18.28192 02 31 11.006 -27 39 58.45 22.1r 15VU207 W84 C~55XF 2017 11 24.25298 02 30 31.594 -27 39 02.87 22.6g 15VU207 W84 C~55XF 2017 11 26.25333 02 30 18.838 -27 38 32.34 21.9i 15VU207 W84 C~55XF 2017 11 26.25471 02 30 18.830 -27 38 32.40 22.6g 15VU207 W84 C~55XF 2017 11 29.19275 02 30 00.580 -27 37 36.63 22.0z 15VU207 W84 C~55XF 2017 12 31.15925 02 27 33.674 -27 14 39.65 21.5Y 15VU207 W84 C~55XF 2018 01 18.10678 02 27 06.009 -26 53 20.64 22.3r 15VU207 W84 C~55XF 2018 01 21.07618 02 27 05.798 -26 49 24.42 22.0z 15VU207 W84 C~55XF 2018 10 20.31693 02 43 18.326 -26 37 30.75 21.9z 15VU207 W84 C~55XF 2018 11 17.27470 02 40 03.153 -26 46 32.95 21.7i 15VU207 W84 C~55XF 2018 11 17.27608 02 40 03.141 -26 46 32.96 21.9r 15VU207 W84 C~55XF 2018 11 17.27746 02 40 03.131 -26 46 32.99 22.7g 15VU207 W84 C~55XF 2021 11 11.395074 03 06 15.999 -23 52 35.99 22.1w 15VU207 F52 C~5HIQ 2021 11 11.405277 03 06 15.950 -23 52 36.45 22.0w 15VU207 F52 C~5HIQ 2021 11 11.415444 03 06 15.860 -23 52 36.30 22.0w 15VU207 F52 C~5HIQ 2022 08 10.296042 03 20 08.700 -21 26 24.18 22.1r 15VU207 304 C~7MnL 2022 08 10.298113 03 20 08.702 -21 26 24.26 22.1i 15VU207 304 C~7MnL 2022 08 10.300868 03 20 08.710 -21 26 24.50 21.9z 15VU207 304 C~7MnL 2022 08 10.303403 03 20 08.712 -21 26 24.63 22.2r 15VU207 304 C~7MnL 2022 08 10.307859 03 20 08.725 -21 26 24.96 21.9z 15VU207 304 C~7MnL 2022 08 10.309962 03 20 08.725 -21 26 25.04 22.1r 15VU207 304 C~7MnL 2022 08 10.311956 03 20 08.734 -21 26 25.23 22.0i 15VU207 304 C~7MnL 2022 08 10.313866 03 20 08.731 -21 26 25.25 22.3r 15VU207 304 C~7MnL 2023 10 11.483888 03 26 11.295 -21 28 46.39 21.9w 15VU207 F51 C~7BH1 2023 10 11.506152 03 26 11.166 -21 28 47.74 22.2w 15VU207 F51 C~7BH1 2023 10 11.517277 03 26 11.112 -21 28 48.16 21.8w 15VU207 F51 C~7BH1
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 0.00
2 0.8111 0.00 -0.00 0.00 0.01
3 0.8462 0.00 -0.00 0.00 0.03
4 0.8462 0.00 0.08 0.00 0.01
5 0.8572 0.00 0.01 0.00 0.06
6 0.8983 0.00 -0.03 0.00 0.06
7 0.9010 0.00 -0.16 0.00 0.16
8 1.0732 0.00 0.07 0.00 0.04
9 1.6733 0.00 0.10 0.00 -0.00
10 1.7065 0.00 -0.08 0.00 0.04
11 1.7090 0.00 0.02 0.00 0.03
12 1.7940 0.00 0.00 0.00 0.05
13 1.8950 0.00 0.03 0.00 0.08
14 1.8950 0.00 0.00 0.00 -0.07
15 1.9716 0.00 0.05 0.00 -0.01
16 1.9716 0.00 0.09 0.00 -0.13
17 2.0589 0.00 -0.04 0.00 0.02
18 2.6731 0.00 -0.03 0.00 -0.10
19 2.6759 0.00 0.15 0.00 -0.20
20 2.7769 0.00 0.02 0.00 0.06
21 2.8590 0.00 0.00 0.00 -0.02
22 2.8590 0.00 -0.04 0.00 -0.00
23 2.8753 0.00 0.04 0.00 0.04
24 2.8808 0.00 0.03 0.00 -0.01
25 2.8808 0.00 0.04 0.00 -0.09
26 2.8888 0.00 0.06 0.00 0.01
27 2.9764 0.00 -0.04 0.00 0.04
28 3.0255 0.00 -0.03 0.00 0.04
29 3.0336 0.00 -0.12 0.00 -0.05
30 3.7790 0.00 0.04 0.00 -0.05
31 3.8555 0.00 0.05 0.00 -0.01
32 3.8555 0.00 0.02 0.00 -0.03
33 3.8555 0.00 0.01 0.00 -0.06
34 6.8401 0.00 -0.13 0.00 0.14
35 6.8401 0.00 0.23 0.00 -0.18
36 6.8402 0.00 -0.03 0.00 0.11
37 7.5845 0.00 -0.02 0.00 -0.00
38 7.5845 0.00 -0.05 0.00 0.04
39 7.5846 0.00 -0.01 0.00 -0.03
40 7.5846 0.00 -0.05 0.00 0.00
41 7.5846 0.00 0.02 0.00 -0.05
42 7.5846 0.00 -0.04 0.00 -0.00
43 7.5846 0.00 0.04 0.00 -0.07
44 7.5846 0.00 -0.06 0.00 0.03
45 8.7541 0.00 0.01 0.00 0.09
46 8.7542 0.00 -0.08 0.00 -0.09
47 8.7542 0.00 0.04 0.00 0.07
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.
15VU207 quality flag:3 Type: 1:1 1:1 1:1 axisobj 30.214 30.214 30.214 ecceobj 0.031 0.031 0.031 incobj 38.929 38.929 38.929 qmin 28.380 28.380 28.380 qmax 31.916 31.916 31.915 amean 30.108 30.108 30.108 amin 29.842 29.842 29.842 amax 30.374 30.374 30.374 emean 0.026 0.026 0.026 emin 0.002 0.002 0.002 emax 0.053 0.053 0.053 imean 37.342 37.342 37.342 imin 37.130 37.130 37.130 imax 37.549 37.549 37.549 excite_mean 0.607 0.607 0.607 fracstop 1.000 1.000 1.000 cjmean 2.591 2.591 2.591 libcent 0 58.2 58.2 58.2 libamp 0 15.4 15.4 15.4 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 174.2 174.3 174.2 kozaiamp 180.0 180.0 180.0