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: 15VP165 # Created Tue Jan 21 02:10:45 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 10.12y # First observation: 2014/11/17 # Last observation: 2024/12/31 # Chi-squared of fit: 18.74 DOF: 74 RMS: 0.12 # Min/Max residuals: -0.30 0.43 # Exact a, adot, b, bdot, g, gdot: 1.685926E-05 3.189019E-02 -4.449681E-06 -8.620470E-03 3.026351E-02 -1.084537E-02 # Covariance matrix: 1.5791E-13 -1.0452E-13 -2.8010E-14 2.6517E-14 -3.1676E-14 -2.4719E-13 -1.0452E-13 9.3393E-14 2.6456E-14 -2.5027E-14 2.6468E-14 2.3344E-13 -2.8010E-14 2.6456E-14 6.5509E-14 -1.7706E-14 4.4696E-15 7.0446E-14 2.6517E-14 -2.5027E-14 -1.7706E-14 1.1737E-14 -4.8443E-15 -6.6482E-14 -3.1676E-14 2.6468E-14 4.4696E-15 -4.8443E-15 1.2025E-13 4.0747E-14 -2.4719E-13 2.3344E-13 7.0446E-14 -6.6482E-14 4.0747E-14 6.2124E-13 # lat0 lon0 xBary yBary zBary JD0 -0.819337 48.130585 -0.109175 -0.013916 -0.983335 2456978.782278 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 311.94939 +/- 0.004 Argument of Peri: 268.12997 +/- 0.006 Long of Asc Node: 225.37286 +/- 0.000 Inclination: 15.12117 +/- 0.000 Eccentricity: 0.33781889 +/- 0.0000 Semi-Major Axis: 39.52234280 +/- 0.0021 Time of Perihelion: 2469091.6987 +/- 6.4 Perihelion: 26.17094873 +/- 0.0017 Aphelion: 52.87373686 +/- 0.0030 Period (y) 248.4690 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.62387066 +/- 0.0003 Ecliptic Y 25.41026631 +/- 0.0003 Ecliptic Z -0.47266554 +/- 0.0000 Ecliptic XDOT -0.00281488 +/- 0.0000 Ecliptic YDOT 0.00118173 +/- 0.0000 Ecliptic ZDOT -0.00076566 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.02583175 +/- 0.0003 Geocenter to KBO 33.04331103 +/- 0.0004 # Hcoef: 9.30
The following table shows the complete astrometric record for 15VP165. 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 (15VP165) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.28150 03 03 37.681 +16 26 34.93 24.3r 15VP165 568 C~2lVb 2014 11 17.39021 03 03 37.031 +16 26 31.75 24.5r 15VP165 568 C~2lVb 2014 11 17.50402 03 03 36.360 +16 26 28.36 24.7r 15VP165 568 C~2lVb 2014 11 19.29385 03 03 25.824 +16 25 36.03 24.8r 15VP165 568 C~2lVb 2014 11 23.39737 03 03 01.914 +16 23 37.42 24.5r 15VP165 568 C~2lVb 2015 09 07.63311 03 16 56.963 +16 56 13.41 25.3w 15VP165 568 C~2lVb 2015 09 12.49674 03 16 48.141 +16 55 05.06 25.0w 15VP165 568 C~2lVb 2015 10 07.43992 03 15 24.550 +16 46 50.08 25.1w 15VP165 568 C~2lVb 2015 10 07.44703 03 15 24.494 +16 46 50.08 25.1w 15VP165 568 C~2lVb 2015 10 08.45165 03 15 19.942 +16 46 25.54 24.5w 15VP165 568 C~2lVb 2015 10 08.51072 03 15 19.678 +16 46 24.23 24.6w 15VP165 568 C~2lVb 2015 11 07.35903 03 12 37.447 +16 32 48.64 24.8r 15VP165 568 C~2lVb 2015 11 07.40112 03 12 37.190 +16 32 47.40 24.4r 15VP165 568 C~2lVb 2015 11 07.44330 03 12 36.938 +16 32 46.18 24.4r 15VP165 568 C~2lVb 2015 11 17.37547 03 11 37.161 +16 27 57.66 25.0w 15VP165 568 C~2lVb 2015 11 17.42215 03 11 36.871 +16 27 56.37 24.8w 15VP165 568 C~2lVb 2015 12 06.38432 03 09 47.523 +16 19 14.02 24.6w 15VP165 568 C~2lVb 2015 12 13.31874 03 09 11.576 +16 16 22.27 24.3w 15VP165 568 C~2lVb 2015 12 13.37723 03 09 11.285 +16 16 20.88 24.4w 15VP165 568 C~2lVb 2016 01 01.37186 03 07 51.735 +16 09 54.85 24.6w 15VP165 568 C~2lVb 2016 01 07.31862 03 07 33.845 +16 08 24.68 24.7w 15VP165 568 C~2lVb 2016 02 04.29505 03 07 04.305 +16 05 12.90 25.1w 15VP165 568 C~2lVb 2016 02 04.30157 03 07 04.310 +16 05 13.11 25.1w 15VP165 568 C~2lVb 2016 02 10.28486 03 07 10.422 +16 05 24.14 24.6w 15VP165 568 C~2lVb 2016 09 07.56206 03 24 59.483 +16 55 43.63 15VP165 568 C~2lVb 2016 09 26.62090 03 24 12.585 +16 50 19.16 24.7w 15VP165 568 C~2lVb 2016 10 10.43747 03 23 15.954 +16 45 05.97 24.6w 15VP165 568 C~2lVb 2016 10 10.49616 03 23 15.678 +16 45 04.53 24.8w 15VP165 568 C~2lVb 2016 10 10.51394 03 23 15.586 +16 45 04.11 25.1w 15VP165 568 C~2lVb 2016 11 02.51995 03 21 11.305 +16 34 46.62 24.7w 15VP165 568 C~2lVb 2016 11 04.39506 03 21 00.142 +16 33 53.34 24.4w 15VP165 568 C~2lVb 2016 12 24.33186 03 16 20.991 +16 12 32.02 24.5w 15VP165 568 C~2lVb 2017 01 26.32220 03 14 57.740 +16 05 59.26 25.0w 15VP165 568 C~2lVb 2017 01 26.34976 03 14 57.718 +16 05 59.11 25.1w 15VP165 568 C~2lVb 2017 12 13.39528 03 25 28.938 +16 15 37.33 24.3w 15VP165 568 C~2lVb 2017 12 13.43255 03 25 28.740 +16 15 36.60 24.6w 15VP165 568 C~2lVb 2017 12 16.37785 03 25 13.396 +16 14 31.31 24.5w 15VP165 568 C~2lVb 2024 12 31.24407 04 26 51.486 +15 25 06.32 24.1G 15VP165 G37 2024 12 31.29330 04 26 51.214 +15 25 05.77 15VP165 G37 2024 12 31.34254 04 26 50.932 +15 25 05.38 15VP165 G37
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 0.0003 0.00 0.00 0.00 -0.03
3 0.0006 0.00 0.19 0.00 -0.07
4 0.0055 0.00 -0.11 0.00 -0.07
5 0.0167 0.00 -0.02 0.00 0.03
6 0.8059 0.00 0.02 0.00 -0.14
7 0.8192 0.00 -0.11 0.00 0.06
8 0.8875 0.00 0.17 0.00 0.02
9 0.8875 0.00 -0.18 0.00 0.19
10 0.8903 0.00 -0.20 0.00 -0.07
11 0.8904 0.00 -0.02 0.00 0.05
12 0.9721 0.00 0.15 0.00 0.18
13 0.9723 0.00 0.14 0.00 0.16
14 0.9724 0.00 0.22 0.00 0.16
15 0.9996 0.00 0.03 0.00 -0.04
16 0.9997 0.00 -0.04 0.00 0.01
17 1.0516 0.00 -0.14 0.00 -0.03
18 1.0706 0.00 0.01 0.00 0.02
19 1.0708 0.00 0.10 0.00 0.02
20 1.1228 0.00 -0.02 0.00 -0.08
21 1.1390 0.00 0.03 0.00 -0.08
22 1.2156 0.00 -0.10 0.00 -0.30
23 1.2157 0.00 -0.08 0.00 -0.09
24 1.2320 0.00 0.05 0.00 0.07
25 1.8077 0.00 0.04 0.00 0.03
26 1.8599 0.00 -0.01 0.00 -0.08
27 1.8978 0.00 -0.04 0.00 0.01
28 1.8979 0.00 0.04 0.00 0.01
29 1.8980 0.00 -0.06 0.00 0.02
30 1.9610 0.00 0.03 0.00 0.06
31 1.9661 0.00 -0.01 0.00 -0.00
32 2.1028 0.00 0.03 0.00 0.12
33 2.1931 0.00 0.06 0.00 0.05
34 2.1932 0.00 0.02 0.00 0.02
35 3.0722 0.00 -0.05 0.00 -0.13
36 3.0723 0.00 0.00 0.00 -0.01
37 3.0803 0.00 0.07 0.00 0.01
38 10.1217 0.00 -0.24 0.00 0.24
39 10.1219 0.00 -0.19 0.00 0.26
40 10.1220 0.00 -0.30 0.00 0.43
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.
15VP165 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.715 39.715 39.715 ecceobj 0.335 0.335 0.335 incobj 15.071 15.071 15.071 qmin 25.761 25.761 25.760 qmax 53.613 53.612 53.613 amean 39.454 39.454 39.454 amin 39.103 39.104 39.103 amax 39.915 39.915 39.915 emean 0.309 0.309 0.309 emin 0.280 0.280 0.280 emax 0.346 0.346 0.346 imean 17.593 17.594 17.593 imin 15.742 15.742 15.741 imax 19.174 19.174 19.175 excite_mean 0.433 0.433 0.433 fracstop 1.000 1.000 1.000 cjmean 2.838 2.838 2.838 libcent 0 179.4 179.4 179.4 libamp 0 19.8 19.7 19.9 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 183.6 183.5 183.6 kozaiamp 180.0 180.0 180.0