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: 17WW14 # Created Fri Nov 22 02:10:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 42 observations of 42 # Arc: 3.42y # First observation: 2015/09/09 # Last observation: 2019/02/08 # Chi-squared of fit: 47.82 DOF: 78 RMS: 0.19 # Min/Max residuals: -0.72 0.50 # Exact a, adot, b, bdot, g, gdot: 4.325608E-05 4.212677E-01 -4.647085E-06 -3.995407E-02 1.572800E-01 -2.096377E-01 # Covariance matrix: 6.9192E-10 -2.4863E-06 -7.7011E-11 2.7021E-07 3.1696E-11 -1.8297E-06 -2.4863E-06 9.2999E-03 2.7692E-07 -1.0106E-03 -1.1327E-07 6.8441E-03 -7.7011E-11 2.7692E-07 9.1057E-12 -3.0137E-08 -3.5305E-12 2.0380E-07 2.7021E-07 -1.0106E-03 -3.0137E-08 1.1095E-04 1.2310E-08 -7.4383E-04 3.1696E-11 -1.1327E-07 -3.5305E-12 1.2310E-08 1.4545E-12 -8.3357E-08 -1.8297E-06 6.8441E-03 2.0380E-07 -7.4383E-04 -8.3357E-08 5.0374E-03 # lat0 lon0 xBary yBary zBary JD0 -3.673348 -21.499822 -0.136076 -0.064037 -0.999435 2457274.867559 # Heliocentric elements and errors Epoch: 2457274.5000 = 2015/09/09 Mean Anomaly: 353.09994 +/- 0.002 Argument of Peri: 272.47681 +/- 0.000 Long of Asc Node: 127.58784 +/- 0.000 Inclination: 5.98136 +/- 0.000 Eccentricity: 0.74709473 +/- 0.0011 Semi-Major Axis: 22.79625496 +/- 0.0000 Time of Perihelion: 2458036.4812 +/- 0.2 Perihelion: 5.76529310 +/- 0.0259 Aphelion: 39.82721681 +/- 0.0259 Period (y) 108.8437 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.88172218 +/- 0.0000 Ecliptic Y -2.56626327 +/- 0.0000 Ecliptic Z -0.40735054 +/- 0.0000 Ecliptic XDOT -0.00074407 +/- 0.0000 Ecliptic YDOT 0.00816757 +/- 0.0000 Ecliptic ZDOT -0.00046022 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 7.35605891 +/- 0.0000 Geocenter to KBO 6.35825399 +/- 0.0000 # Hcoef: 13.89
The following table shows the complete astrometric record for 17WW14. 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 (17WW14) followed by the observatory code and reference code for the source of the astrometry.
2015 09 09.36677 22 46 07.915 -11 47 11.63 22.3w 17WW14 F51 C~2zme 2015 09 09.37796 22 46 07.713 -11 47 13.25 22.3w 17WW14 F51 C~2zme 2015 09 09.38911 22 46 07.501 -11 47 14.66 21.9w 17WW14 F51 C~2zme 2015 09 09.40021 22 46 07.280 -11 47 16.25 22.5w 17WW14 F51 C~2zme 2017 08 03.57963 02 52 50.446 +10 15 03.00 22.0w 17WW14 F51 C~2zme 2017 08 03.58997 02 52 50.705 +10 15 03.55 21.8w 17WW14 F51 C~2zme 2017 08 03.61068 02 52 51.200 +10 15 04.61 21.8w 17WW14 F51 C~2zme 2017 09 23.43836 03 00 45.473 +09 56 12.66 21.1G 17WW14 F51 C~2jiW 2017 09 23.44929 03 00 45.399 +09 56 11.82 21.3G 17WW14 F51 C~2jiW 2017 09 23.46031 03 00 45.321 +09 56 10.91 21.3G 17WW14 F51 C~2jiW 2017 09 23.47130 03 00 45.242 +09 56 10.01 21.3G 17WW14 F51 C~2jiW 2017 09 24.46292 03 00 38.354 +09 54 46.21 22.0G 17WW14 F51 C~2jiW 2017 09 24.47652 03 00 38.243 +09 54 45.16 21.9G 17WW14 F51 C~2jiW 2017 09 24.49021 03 00 38.134 +09 54 43.81 21.4G 17WW14 F51 C~2jiW 2017 09 24.50377 03 00 38.029 +09 54 42.87 21.5G 17WW14 F51 C~2jiW 2017 11 07.44586 02 48 14.132 +08 40 20.18 21.6G 17WW14 F51 C~2jiW 2017 11 07.45678 02 48 13.890 +08 40 19.14 21.6G 17WW14 F51 C~2jiW 2017 11 07.46787 02 48 13.637 +08 40 18.10 21.6G 17WW14 F51 C~2jiW 2017 11 07.47886 02 48 13.380 +08 40 17.04 21.7G 17WW14 F51 C~2jiW 2017 11 16.45161 02 44 58.983 +08 27 49.93 21.1G 17WW14 F51 C~2jiW 2017 11 16.46446 02 44 58.680 +08 27 48.79 21.0G 17WW14 F51 C~2jiW 2017 11 21.42724 02 43 16.667 +08 22 14.31 21.2w 17WW14 F51 C~2Rki 2017 11 21.43881 02 43 16.413 +08 22 13.62 21.3w 17WW14 F51 C~2Rki 2017 11 21.45036 02 43 16.191 +08 22 12.93 21.3w 17WW14 F51 C~2Rki 2017 11 21.46196 02 43 15.946 +08 22 12.23 21.6w 17WW14 F51 C~2Rki 2017 11 23.32480 02 42 39.25 +08 20 23.6 21.4R 17WW14 926 C~2Rki 2017 11 23.35060 02 42 38.76 +08 20 22.1 20.8R 17WW14 926 C~2Rki 2017 11 23.36940 02 42 38.37 +08 20 21.6 21.0R 17WW14 926 C~2Rki 2017 11 24.11447 02 42 24.20 +08 19 40.6 17WW14 691 C~2Rki 2017 11 24.11898 02 42 24.09 +08 19 40.8 20.3R 17WW14 691 C~2Rki 2017 11 24.12351 02 42 24.00 +08 19 40.1 20.9R 17WW14 691 C~2Rki 2017 11 24.36629 02 42 19.323 +08 19 27.68 21.1G 17WW14 F51 C~2jiW 2017 11 26.21713 02 41 44.58 +08 17 55.6 22.2R 17WW14 691 C~2Rki 2017 11 26.22615 02 41 44.41 +08 17 55.0 21.5R 17WW14 691 C~2Rki 2017 11 26.23535 02 41 44.25 +08 17 54.2 21.3R 17WW14 691 C~2Rki 2017 12 20.26409 02 36 31.452 +08 15 00.59 21.4R 17WW14 G37 C~2V06 2017 12 20.34007 02 36 30.925 +08 15 03.16 17WW14 G37 C~2V06 2018 01 11.22359 02 36 41.202 +08 41 58.47 21.6G 17WW14 F51 C~2jiW 2018 01 11.23626 02 36 41.288 +08 41 59.86 21.6G 17WW14 F51 C~2jiW 2018 01 11.24892 02 36 41.369 +08 42 01.21 21.6G 17WW14 F51 C~2jiW 2019 02 08.166250 04 54 53.132 +17 58 20.68 22.4G 17WW14 G37 C~2zme 2019 02 08.268260 04 54 53.290 +17 58 27.50 17WW14 G37 C~2zme
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 -0.23 0.00 0.05
2 0.0000 0.00 0.04 0.00 -0.07
3 0.0001 0.00 0.15 0.00 0.01
4 0.0001 0.00 0.11 0.00 -0.10
5 1.9007 0.00 -0.20 0.00 -0.09
6 1.9007 0.00 -0.04 0.00 -0.04
7 1.9007 0.00 -0.07 0.00 0.02
8 2.0399 0.00 0.07 0.00 -0.12
9 2.0399 0.00 0.14 0.00 -0.06
10 2.0400 0.00 0.16 0.00 -0.06
11 2.0400 0.00 0.17 0.00 -0.05
12 2.0427 0.00 0.10 0.00 -0.07
13 2.0427 0.00 0.04 0.00 0.03
14 2.0428 0.00 0.03 0.00 -0.17
15 2.0428 0.00 0.06 0.00 0.04
16 2.1631 0.00 0.14 0.00 -0.01
17 2.1631 0.00 0.23 0.00 -0.04
18 2.1632 0.00 0.21 0.00 -0.06
19 2.1632 0.00 0.09 0.00 -0.11
20 2.1878 0.00 0.44 0.00 0.17
21 2.1878 0.00 0.09 0.00 -0.01
22 2.2014 0.00 0.11 0.00 -0.12
23 2.2014 0.00 -0.12 0.00 -0.10
24 2.2015 0.00 0.12 0.00 -0.08
25 2.2015 0.00 0.02 0.00 -0.07
26 2.2066 0.00 -0.72 0.00 -0.02
27 2.2067 0.00 -0.34 0.00 -0.06
28 2.2067 0.00 -0.58 0.00 0.50
29 2.2088 0.00 0.02 0.00 0.01
30 2.2088 0.00 -0.31 0.00 0.45
31 2.2088 0.00 -0.32 0.00 -0.01
32 2.2094 0.00 0.17 0.00 0.01
33 2.2145 0.00 -0.14 0.00 0.45
34 2.2145 0.00 -0.10 0.00 0.27
35 2.2146 0.00 0.13 0.00 -0.10
36 2.2803 0.00 0.15 0.00 0.02
37 2.2806 0.00 0.15 0.00 -0.01
38 2.3405 0.00 0.17 0.00 -0.03
39 2.3405 0.00 0.14 0.00 -0.04
40 2.3405 0.00 0.04 0.00 -0.09
41 3.4163 0.00 -0.03 0.00 -0.31
42 3.4166 0.00 0.09 0.00 -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.
17WW14 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 22.917 22.917 22.917 ecceobj 0.750 0.750 0.750 incobj 5.974 5.974 5.974 qmin 5.735 5.735 5.735 qmax 54.987 40.098 49.038 amean 26.556 22.917 23.637 amin 22.100 22.917 21.614 amax 30.472 22.917 27.414 emean 0.777 0.750 0.754 emin 0.738 0.750 0.732 emax 0.805 0.750 0.789 imean 4.442 4.522 4.634 imin 4.394 4.522 4.522 imax 4.522 4.522 4.715 excite_mean 0.781 0.754 0.758 fracstop 0.001 0.000 0.000 cjmean 2.319 2.465 2.440 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 278.8 272.4 283.9 kozaiamp 7.7 0.0 11.4