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: 17NM2 # Created Fri Nov 22 02:10:54 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 42 observations of 42 # Arc: 1.83y # First observation: 2015/11/30 # Last observation: 2017/09/27 # Chi-squared of fit: 143.37 DOF: 78 RMS: 0.33 # Min/Max residuals: -0.83 1.00 # Exact a, adot, b, bdot, g, gdot: -9.534077E-06 -1.063344E-01 4.910588E-05 5.587863E-01 1.810795E-01 -1.038302E-01 # Covariance matrix: 3.6791E-13 -2.5817E-13 -2.1121E-15 2.7544E-13 1.2774E-13 1.2031E-13 -2.5817E-13 2.4771E-13 2.1088E-14 -6.1962E-13 -2.7031E-13 -2.8122E-13 -2.1121E-15 2.1088E-14 3.6710E-13 -3.5136E-13 -4.1394E-14 -8.3543E-14 2.7544E-13 -6.1962E-13 -3.5136E-13 3.3205E-12 1.3504E-12 1.4777E-12 1.2774E-13 -2.7031E-13 -4.1394E-14 1.3504E-12 5.9390E-13 6.0996E-13 1.2031E-13 -2.8122E-13 -8.3543E-14 1.4777E-12 6.0996E-13 6.9225E-13 # lat0 lon0 xBary yBary zBary JD0 52.469131 93.151074 0.426327 0.707612 -0.543331 2457357.049869 # Heliocentric elements and errors Epoch: 2457356.5000 = 2015/11/30 Mean Anomaly: 351.77151 +/- 0.000 Argument of Peri: 89.27210 +/- 0.000 Long of Asc Node: 99.27858 +/- 0.000 Inclination: 101.29093 +/- 0.000 Eccentricity: 0.62492683 +/- 0.0000 Semi-Major Axis: 14.67650352 +/- 0.1382 Time of Perihelion: 2457825.9072 +/- 283.4 Perihelion: 5.50476272 +/- 0.0518 Aphelion: 23.84824432 +/- 0.2246 Period (y) 56.2266 +/- 0.79 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 0.18807465 +/- 0.0000 Ecliptic Y 4.27195227 +/- 0.0000 Ecliptic Z 4.37956301 +/- 0.0000 Ecliptic XDOT 0.00202497 +/- 0.0000 Ecliptic YDOT -0.00756316 +/- 0.0000 Ecliptic ZDOT 0.00390190 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 6.12098388 +/- 0.0000 Geocenter to KBO 5.52250580 +/- 0.0000 # Hcoef: 13.40
The following table shows the complete astrometric record for 17NM2. 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 (17NM2) followed by the observatory code and reference code for the source of the astrometry.
2015 11 30.54908 06 31 25.940 +75 49 20.86 21.0G 17NM2 F51 C~2jiV 2015 12 01.59239 06 28 32.135 +75 59 27.68 21.4G 17NM2 F51 C~2jiV 2015 12 01.60556 06 28 29.924 +75 59 35.22 21.3G 17NM2 F51 C~2jiV 2015 12 01.61880 06 28 27.626 +75 59 42.73 21.3G 17NM2 F51 C~2jiV 2017 06 06.51276 20 37 53.788 +66 16 37.38 21.5i 17NM2 F51 C~2HlF 2017 06 06.52534 20 37 52.671 +66 16 39.78 21.6i 17NM2 F51 C~2HlF 2017 06 06.53793 20 37 51.561 +66 16 41.88 21.1i 17NM2 F51 C~2HlF 2017 06 06.55052 20 37 50.434 +66 16 44.16 21.5i 17NM2 F51 C~2HlF 2017 07 04.44886 19 48 10.626 +66 17 56.88 21.5i 17NM2 F51 C~2HlF 2017 07 04.45935 19 48 09.341 +66 17 54.73 21.1i 17NM2 F51 C~2HlF 2017 07 04.48031 19 48 06.909 +66 17 50.63 21.4i 17NM2 F51 C~2HlF 2017 07 06.45890 19 44 14.281 +66 10 37.21 20.8i 17NM2 F51 C~2HlF 2017 07 06.47084 19 44 12.837 +66 10 34.09 21.0i 17NM2 F51 C~2HlF 2017 07 06.48277 19 44 11.492 +66 10 31.41 21.1i 17NM2 F51 C~2HlF 2017 07 06.49471 19 44 10.013 +66 10 28.63 20.8i 17NM2 F51 C~2HlF 2017 07 08.46486 19 40 19.009 +66 02 11.96 20.9i 17NM2 F51 C~2HlF 2017 07 08.47794 19 40 17.396 +66 02 08.49 21.2i 17NM2 F51 C~2HlF 2017 07 08.50421 19 40 14.377 +66 02 01.39 21.3i 17NM2 F51 C~2HlF 2017 07 10.45891 19 36 26.362 +65 52 43.78 21.1i 17NM2 F51 C~2HlF 2017 07 10.47365 19 36 24.642 +65 52 39.22 21.6i 17NM2 F51 C~2HlF 2017 07 10.48822 19 36 22.887 +65 52 34.67 20.9i 17NM2 F51 C~2HlF 2017 07 10.50282 19 36 21.188 +65 52 30.38 21.2i 17NM2 F51 C~2HlF 2017 07 12.43202 19 32 38.013 +65 42 15.71 21.7G 17NM2 F51 C~2jiV 2017 07 12.44583 19 32 36.388 +65 42 11.12 22.1G 17NM2 F51 C~2jiV 2017 07 12.45962 19 32 34.823 +65 42 06.55 21.1G 17NM2 F51 C~2jiV 2017 07 12.47346 19 32 33.190 +65 42 01.97 21.3G 17NM2 F51 C~2jiV 2017 07 15.44509 19 26 54.182 +65 24 12.32 21.0i 17NM2 F51 C~2Hvk 2017 07 15.46148 19 26 52.299 +65 24 06.24 20.9i 17NM2 F51 C~2Hvk 2017 07 15.47787 19 26 50.353 +65 23 59.54 20.8i 17NM2 F51 C~2Hvk 2017 08 17.31309 18 38 00.832 +59 39 51.47 21.0G 17NM2 F51 C~2jiV 2017 08 17.32699 18 37 59.978 +59 39 39.90 20.9G 17NM2 F51 C~2jiV 2017 08 17.34086 18 37 59.125 +59 39 28.33 21.4G 17NM2 F51 C~2jiV 2017 08 17.35477 18 37 58.275 +59 39 16.85 21.0G 17NM2 F51 C~2jiV 2017 09 14.25667 18 21 23.627 +52 32 22.09 21.4w 17NM2 F51 C~2KZX 2017 09 14.26957 18 21 23.436 +52 32 09.63 21.6w 17NM2 F51 C~2KZX 2017 09 14.28250 18 21 23.256 +52 31 57.03 21.5w 17NM2 F51 C~2KZX 2017 09 14.29540 18 21 23.067 +52 31 44.70 21.7w 17NM2 F51 C~2KZX 2017 09 25.25275 18 20 10.17 +49 35 11.6 20.6V 17NM2 G96 C~2LUt 2017 09 25.25847 18 20 10.11 +49 35 06.4 21.6V 17NM2 G96 C~2LUt 2017 09 25.26423 18 20 10.11 +49 35 00.3 20.8V 17NM2 G96 C~2LUt 2017 09 25.26990 18 20 10.05 +49 34 55.6 22.3V 17NM2 G96 C~2LUt 2017 09 27.27505 18 20 12.421 +49 02 52.35 21.3G 17NM2 F51 C~2jiV
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 0.19 0.00 -0.07
2 0.0029 0.00 -0.44 0.00 -0.01
3 0.0029 0.00 0.30 0.00 0.03
4 0.0029 0.00 -0.11 0.00 0.01
5 1.5167 0.00 -0.56 0.00 -0.07
6 1.5167 0.00 -0.53 0.00 0.09
7 1.5167 0.00 -0.36 0.00 -0.04
8 1.5168 0.00 -0.45 0.00 0.02
9 1.5932 0.00 0.06 0.00 0.09
10 1.5932 0.00 -0.46 0.00 0.05
11 1.5932 0.00 0.52 0.00 0.19
12 1.5987 0.00 -0.15 0.00 0.04
13 1.5987 0.00 -0.49 0.00 -0.27
14 1.5987 0.00 0.64 0.00 -0.14
15 1.5988 0.00 -0.22 0.00 -0.09
16 1.6042 0.00 0.10 0.00 0.01
17 1.6042 0.00 -0.83 0.00 0.07
18 1.6043 0.00 0.60 0.00 0.08
19 1.6096 0.00 0.20 0.00 0.28
20 1.6096 0.00 0.45 0.00 0.18
21 1.6097 0.00 -0.14 0.00 0.05
22 1.6097 0.00 0.16 0.00 0.21
23 1.6150 0.00 0.13 0.00 -0.15
24 1.6150 0.00 -0.06 0.00 -0.12
25 1.6151 0.00 0.60 0.00 -0.06
26 1.6151 0.00 0.33 0.00 0.02
27 1.6233 0.00 0.89 0.00 -0.04
28 1.6233 0.00 0.79 0.00 0.20
29 1.6234 0.00 -0.28 0.00 -0.15
30 1.7132 0.00 -0.10 0.00 -0.10
31 1.7133 0.00 -0.11 0.00 -0.12
32 1.7133 0.00 -0.14 0.00 -0.15
33 1.7134 0.00 -0.10 0.00 -0.05
34 1.7898 0.00 -0.36 0.00 0.16
35 1.7898 0.00 -0.36 0.00 0.20
36 1.7898 0.00 -0.20 0.00 0.13
37 1.7899 0.00 -0.20 0.00 0.32
38 1.8199 0.00 1.00 0.00 -0.30
39 1.8199 0.00 0.12 0.00 0.03
40 1.8199 0.00 0.14 0.00 -0.49
41 1.8199 0.00 -0.74 0.00 0.29
42 1.8254 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.
17NM2 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 14.568 14.568 14.568 ecceobj 0.618 0.618 0.618 incobj 101.304 101.304 101.304 qmin 5.459 5.459 5.459 qmax 23.680 23.679 23.680 amean 14.569 14.569 14.569 amin 14.568 14.568 14.568 amax 14.569 14.569 14.570 emean 0.622 0.622 0.622 emin 0.618 0.618 0.618 emax 0.625 0.625 0.625 imean 99.766 99.766 99.766 imin 99.742 99.742 99.742 imax 99.791 99.791 99.791 excite_mean 1.165 1.165 1.165 fracstop 0.000 0.000 0.000 cjmean 1.876 1.876 1.876 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 88.4 88.4 88.4 kozaiamp 0.8 0.8 0.8