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: 17BH237 # Created Mon Apr 28 01:11:03 2025 # Orbit generated from Bernstein formalism # Fitting 42 observations of 42 # Arc: 2.45y # First observation: 2016/11/25 # Last observation: 2019/05/09 Preliminary a, adot, b, bdot, g, gdot: -0.000007 0.020317 -0.000001 0.001509 0.021896 0.000000 # Chi-squared of fit: 46.50 DOF: 78 RMS: 0.19 # Min/Max residuals: -0.43 0.45 # Exact a, adot, b, bdot, g, gdot: 1.455158E-05 2.009416E-02 4.773754E-07 1.513329E-03 2.157043E-02 6.958119E-03 # Covariance matrix: 1.9126E-13 2.9989E-13 4.1647E-14 1.5499E-14 3.9705E-13 9.2580E-12 2.9989E-13 1.1328E-12 9.5314E-14 8.2277E-14 1.0314E-12 3.9549E-11 4.1647E-14 9.5314E-14 5.6392E-14 -2.4604E-14 1.1356E-13 2.7403E-12 1.5499E-14 8.2277E-14 -2.4604E-14 9.0602E-14 6.3300E-14 3.8325E-12 3.9705E-13 1.0314E-12 1.1356E-13 6.3300E-14 1.1378E-12 3.3497E-11 9.2580E-12 3.9549E-11 2.7403E-12 3.8325E-12 3.3497E-11 1.7125E-09 # lat0 lon0 xBary yBary zBary JD0 -8.967516 151.352990 0.991201 -0.005478 -0.035962 2457718.115333 # Heliocentric elements and errors Epoch: 2457710.5000 = 2016/11/18 Mean Anomaly: 46.14396 +/- 0.134 Argument of Peri: 211.72661 +/- 0.038 Long of Asc Node: 215.64176 +/- 0.004 Inclination: 9.82653 +/- 0.000 Eccentricity: 0.33619118 +/- 0.0021 Semi-Major Axis: 54.63675668 +/- 0.0892 Time of Perihelion: 2438802.8247 +/- 29.3 Perihelion: 36.26836100 +/- 0.1295 Aphelion: 73.00515235 +/- 0.1657 Period (y) 403.8644 +/- 0.99 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.74809420 +/- 0.0020 Ecliptic Y 22.83678961 +/- 0.0011 Ecliptic Z -7.22631711 +/- 0.0004 Ecliptic XDOT -0.00201226 +/- 0.0000 Ecliptic YDOT -0.00181243 +/- 0.0000 Ecliptic ZDOT 0.00005202 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.40743056 +/- 0.0018 Geocenter to KBO 46.35976082 +/- 0.0023 # Hcoef: 8.74
The following table shows the complete astrometric record for 17BH237. 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 (17BH237) followed by the observatory code and reference code for the source of the astrometry.
2016 11 25.614544 10 00 47.74 +02 35 58.6 17BH237 T09 C~83Eq 2016 11 25.629956 10 00 47.74 +02 35 58.0 17BH237 T09 C~83Eq 2016 11 25.637913 10 00 47.74 +02 35 57.9 17BH237 T09 C~83Eq 2017 01 02.49315 09 59 58.10 +02 33 38.3 25.3i 17BH237 T09 C~82nB 2017 01 02.50080 09 59 58.05 +02 33 38.6 25.6i 17BH237 T09 C~82nB 2017 01 02.50845 09 59 58.03 +02 33 38.6 26.0i 17BH237 T09 C~82nB 2017 01 02.51228 09 59 58.02 +02 33 38.8 25.0i 17BH237 T09 C~82nB 2017 01 02.51993 09 59 58.01 +02 33 39.0 24.9i 17BH237 T09 C~82nB 2017 01 21.42903 09 58 56.85 +02 36 57.4 25.0z 17BH237 T09 C~82nB 2017 01 21.44467 09 58 56.78 +02 36 57.6 24.3z 17BH237 T09 C~82nB 2017 01 21.44850 09 58 56.78 +02 36 57.6 25.0z 17BH237 T09 C~82nB 2017 01 21.48947 09 58 56.64 +02 36 58.3 24.8z 17BH237 T09 C~82nB 2017 01 21.50089 09 58 56.59 +02 36 58.4 25.0z 17BH237 T09 C~82nB 2017 01 21.52708 09 58 56.48 +02 36 58.8 24.6z 17BH237 T09 C~82nB 2017 01 21.54162 09 58 56.42 +02 36 59.1 25.0z 17BH237 T09 C~82nB 2017 01 21.58134 09 58 56.30 +02 36 59.1 25.4z 17BH237 T09 C~82nB 2017 01 23.37416 09 58 49.60 +02 37 27.0 26.0r 17BH237 T09 C~82nB 2017 01 23.38883 09 58 49.55 +02 37 27.5 26.1r 17BH237 T09 C~82nB 2017 01 23.59562 09 58 48.75 +02 37 30.3 25.5i 17BH237 T09 C~82nB 2017 01 30.42076 09 58 22.29 +02 39 26.2 25.0i 17BH237 T09 C~82nB 2017 01 30.42459 09 58 22.25 +02 39 26.4 24.8i 17BH237 T09 C~82nB 2017 01 30.44661 09 58 22.16 +02 39 27.0 24.8i 17BH237 T09 C~82nB 2017 01 30.45035 09 58 22.15 +02 39 26.9 24.2i 17BH237 T09 C~82nB 2017 01 30.46494 09 58 22.07 +02 39 27.4 24.8i 17BH237 T09 C~82nB 2017 01 30.46877 09 58 22.08 +02 39 27.4 24.7i 17BH237 T09 C~82nB 2017 01 30.49455 09 58 21.99 +02 39 27.7 24.1z 17BH237 T09 C~82nB 2017 01 30.50920 09 58 21.94 +02 39 28.4 26.3z 17BH237 T09 C~83Eq 2017 01 30.52066 09 58 21.87 +02 39 28.2 24.7z 17BH237 T09 C~82nB 2017 01 30.55762 09 58 21.72 +02 39 28.9 26.0z 17BH237 T09 C~83Eq 2017 01 30.58347 09 58 21.61 +02 39 29.5 26.2z 17BH237 T09 C~83Eq 2017 01 30.59788 09 58 21.55 +02 39 29.9 25.1z 17BH237 T09 C~82nB 2017 01 30.60170 09 58 21.54 +02 39 29.9 25.1z 17BH237 T09 C~82nB 2017 01 30.60540 09 58 21.54 +02 39 29.9 24.8z 17BH237 T09 C~82nB 2017 02 02.42933 09 58 10.17 +02 40 23.4 25.6r 17BH237 T09 C~82nB 2017 02 02.46207 09 58 10.01 +02 40 23.9 26.3r 17BH237 T09 C~82nB 2017 02 02.47353 09 58 09.98 +02 40 24.0 26.2r 17BH237 T09 C~82nB 2017 03 04.448872 09 56 05.87 +02 52 01.1 17BH237 T09 C~83Eq 2017 03 04.470791 09 56 05.77 +02 52 01.7 17BH237 T09 C~83Eq 2019 02 05.430856 10 06 57.83 +02 02 16.6 17BH237 T09 C~83Eq 2019 05 09.259841 10 02 28.51 +02 37 33.9 17BH237 T09 C~83Eq 2019 05 09.277239 10 02 28.51 +02 37 34.0 17BH237 T09 C~83Eq 2019 05 09.309493 10 02 28.49 +02 37 34.4 17BH237 T09 C~83Eq
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 0.13
2 0.0000 0.21 0.14 -0.56 -0.25
3 0.0001 0.24 0.13 -0.66 -0.25
4 0.1037 -647.96 0.33 -391.34 -0.11
5 0.1037 -648.77 -0.17 -391.32 -0.02
6 0.1037 -649.05 -0.13 -391.42 -0.06
7 0.1038 -649.26 -0.19 -391.29 0.11
8 0.1038 -649.47 -0.08 -391.15 0.31
9 0.1555 -1577.55 -0.21 -525.28 -0.03
10 0.1556 -1578.60 -0.35 -525.46 -0.12
11 0.1556 -1578.60 -0.13 -525.46 -0.10
12 0.1557 -1580.81 0.03 -525.53 0.07
13 0.1557 -1581.55 -0.04 -525.70 -0.03
14 0.1558 -1583.24 -0.20 -525.90 -0.08
15 0.1559 -1584.18 -0.31 -525.93 -0.03
16 0.1560 -1585.87 0.31 -526.56 -0.43
17 0.1609 -1689.69 -0.31 -535.46 0.02
18 0.1609 -1690.57 -0.32 -535.26 0.30
19 0.1615 -1702.78 -0.26 -536.82 -0.14
20 0.1802 -2114.82 0.45 -566.60 -0.14
21 0.1802 -2115.45 0.06 -566.62 -0.15
22 0.1802 -2116.92 -0.01 -566.53 0.03
23 0.1802 -2117.03 0.12 -566.67 -0.10
24 0.1803 -2118.32 -0.25 -566.62 0.01
25 0.1803 -2118.18 0.13 -566.57 0.08
26 0.1804 -2119.55 0.40 -566.76 -0.01
27 0.1804 -2120.50 0.38 -566.37 0.45
28 0.1804 -2121.41 0.19 -566.92 -0.06
29 0.1805 -2123.76 0.19 -567.05 -0.04
30 0.1806 -2125.52 0.07 -567.06 0.05
31 0.1807 -2126.50 0.00 -567.00 0.17
32 0.1807 -2126.64 0.10 -567.05 0.13
33 0.1807 -2126.64 0.34 -567.05 0.15
34 0.1884 -2304.99 0.07 -576.37 0.24
35 0.1885 -2307.41 -0.23 -576.74 -0.01
36 0.1885 -2307.86 0.06 -576.80 -0.04
37 0.2706 -4294.24 -0.10 -571.99 0.01
38 0.2707 -4295.85 -0.26 -571.95 -0.02
39 2.1953 5905.26 -0.01 47.12 -0.01
40 2.4494 1381.40 -0.02 617.19 0.10
41 2.4495 1381.37 0.09 617.28 -0.01
42 2.4495 1380.95 -0.06 617.55 -0.11
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.
17BH237 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 54.609 54.866 54.358 ecceobj 0.341 0.346 0.335 incobj 9.840 9.839 9.840 qmin 35.146 34.870 35.115 qmax 74.615 75.724 74.789 amean 54.397 54.672 54.298 amin 53.741 53.977 53.575 amax 55.199 55.567 55.253 emean 0.340 0.346 0.336 emin 0.329 0.331 0.323 emax 0.352 0.363 0.355 imean 10.545 10.369 10.282 imin 9.737 9.630 9.547 imax 10.924 11.238 11.210 excite_mean 0.386 0.390 0.381 fracstop 1.000 1.000 1.000 cjmean 3.038 3.038 3.043 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 185.7 181.9 181.7 kozaiamp 180.0 179.9 180.0