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: 17FH252 # Created Wed Nov 27 02:10:51 2024 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 35.97d # First observation: 2017/03/22 # Last observation: 2017/04/27 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.019835 0.000002 0.001432 0.021003 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 42.75 DOF: 71 RMS: 0.19 # Min/Max residuals: -0.54 0.60 # Exact a, adot, b, bdot, g, gdot: 1.321424E-05 1.750242E-02 8.403208E-07 1.854371E-03 2.059749E-02 -4.259151E-03 # Covariance matrix: 2.0355E-13 5.3687E-11 2.8802E-14 -9.4240E-12 1.1371E-11 -9.6163E-10 5.3687E-11 6.7685E-08 4.9677E-11 -1.2180E-08 1.1963E-08 -2.4332E-06 2.8802E-14 4.9677E-11 1.1736E-13 -9.9992E-12 8.5420E-12 -1.9289E-09 -9.4240E-12 -1.2180E-08 -9.9992E-12 2.2194E-09 -2.1446E-09 4.4329E-07 1.1371E-11 1.1963E-08 8.5420E-12 -2.1446E-09 2.1514E-09 -4.0885E-07 -9.6163E-10 -2.4332E-06 -1.9289E-09 4.4329E-07 -4.0885E-07 1.0012E-04 # lat0 lon0 xBary yBary zBary JD0 -8.938064 152.157132 -0.486002 -0.134450 -0.855752 2457834.888291 # Heliocentric elements and errors Epoch: 2457830.5000 = 2017/03/18 Mean Anomaly: 275.90391 +/- 88.269 Argument of Peri: 54.67740 +/- 52.810 Long of Asc Node: 207.63570 +/- 0.844 Inclination: 10.69201 +/- 0.108 Eccentricity: 0.22893443 +/- 0.4824 Semi-Major Axis: 48.04910315 +/- 12.6681 Time of Perihelion: 2486248.9015 +/- 27630.2 Perihelion: 37.04900897 +/- 25.1513 Aphelion: 59.04919733 +/- 27.9204 Period (y) 333.0705 +/- 131.72 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.40419961 +/- 0.0955 Ecliptic Y 22.36946677 +/- 0.0504 Ecliptic Z -7.54293685 +/- 0.0170 Ecliptic XDOT -0.00062246 +/- 0.0011 Ecliptic YDOT -0.00230702 +/- 0.0006 Ecliptic ZDOT 0.00033138 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 49.40863774 +/- 0.0870 Geocenter to KBO 48.54959446 +/- 0.1093 # Hcoef: 8.58
The following table shows the complete astrometric record for 17FH252. 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 (17FH252) followed by the observatory code and reference code for the source of the astrometry.
2017 03 22.38749 10 03 48.92 +02 20 54.9 24.4z 17FH252 T09 C~8HL4 2017 03 22.41317 10 03 48.84 +02 20 55.6 24.9z 17FH252 T09 C~8HL4 2017 03 22.43886 10 03 48.75 +02 20 55.9 24.3z 17FH252 T09 C~8HL4 2017 03 22.46449 10 03 48.66 +02 20 56.7 24.3z 17FH252 T09 C~8HL4 2017 03 22.48627 10 03 48.60 +02 20 57.4 24.5z 17FH252 T09 C~8HL4 2017 03 23.23750 10 03 46.16 +02 21 16.2 24.8i 17FH252 T09 C~8HL4 2017 03 23.24138 10 03 46.18 +02 21 16.6 25.2i 17FH252 T09 C~8HL4 2017 03 23.24858 10 03 46.14 +02 21 16.7 25.5i 17FH252 T09 C~8HL4 2017 03 23.27035 10 03 46.06 +02 21 17.1 25.3i 17FH252 T09 C~8HL4 2017 03 25.25752 10 03 39.77 +02 22 06.9 25.9r 17FH252 T09 C~8HL4 2017 03 25.27122 10 03 39.72 +02 22 07.4 26.2r 17FH252 T09 C~8HL4 2017 03 25.28496 10 03 39.68 +02 22 07.5 25.6r 17FH252 T09 C~8HL4 2017 03 29.39106 10 03 27.29 +02 23 49.6 25.6z 17FH252 T09 C~8HL4 2017 03 29.39490 10 03 27.26 +02 23 49.2 25.2z 17FH252 T09 C~8HL4 2017 03 29.41023 10 03 27.24 +02 23 49.9 25.0z 17FH252 T09 C~8HL4 2017 03 29.42172 10 03 27.19 +02 23 50.6 25.1z 17FH252 T09 C~8HL4 2017 03 29.42555 10 03 27.17 +02 23 50.4 25.9z 17FH252 T09 C~8HL4 2017 03 30.25151 10 03 24.82 +02 24 10.3 24.7i 17FH252 T09 C~8HL4 2017 03 30.26317 10 03 24.77 +02 24 11.4 25.3i 17FH252 T09 C~8HL4 2017 03 30.26700 10 03 24.75 +02 24 11.3 25.3i 17FH252 T09 C~8HL4 2017 03 30.27083 10 03 24.75 +02 24 11.3 25.3i 17FH252 T09 C~8HL4 2017 03 30.27466 10 03 24.73 +02 24 11.3 25.2i 17FH252 T09 C~8HL4 2017 03 30.28239 10 03 24.71 +02 24 11.3 24.7i 17FH252 T09 C~8HL4 2017 03 30.29387 10 03 24.67 +02 24 11.8 24.7i 17FH252 T09 C~8HL4 2017 04 23.24251 10 02 33.12 +02 33 01.2 25.3r 17FH252 T09 C~8HL4 2017 04 23.25033 10 02 33.10 +02 33 01.6 25.6r 17FH252 T09 C~8HL4 2017 04 23.25417 10 02 33.11 +02 33 01.4 25.6r 17FH252 T09 C~8HL4 2017 04 23.26183 10 02 33.08 +02 33 01.7 25.9r 17FH252 T09 C~8HL4 2017 04 23.34188 10 02 32.99 +02 33 03.4 24.8z 17FH252 T09 C~8HL4 2017 04 23.35718 10 02 32.96 +02 33 04.1 25.2z 17FH252 T09 C~8HL4 2017 04 26.23645 10 02 29.32 +02 33 57.0 25.4i 17FH252 T09 C~8HL4 2017 04 26.24413 10 02 29.31 +02 33 57.0 25.9i 17FH252 T09 C~8HL4 2017 04 26.24796 10 02 29.30 +02 33 56.9 25.3i 17FH252 T09 C~8HL4 2017 04 26.29400 10 02 29.25 +02 33 58.2 26.0i 17FH252 T09 C~8HL4 2017 04 26.32635 10 02 29.24 +02 33 58.7 26.4g 17FH252 T09 C~8HL4 2017 04 27.35218 10 02 28.08 +02 34 17.2 26.3i 17FH252 T09 C~8HL5 2017 04 27.35601 10 02 28.09 +02 34 17.4 26.6i 17FH252 T09 C~8HL5 2017 04 27.35984 10 02 28.07 +02 34 17.4 26.7i 17FH252 T09 C~8HL5
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 0.05 0.00 0.12
2 0.0001 -1.37 0.10 0.23 0.20
3 0.0001 -2.74 0.16 0.04 -0.16
4 0.0002 -4.28 0.03 0.31 -0.04
5 0.0003 -5.37 0.14 0.65 0.16
6 0.0023 -46.22 -0.21 5.38 -0.13
7 0.0023 -46.08 0.14 5.86 0.32
8 0.0024 -46.67 -0.06 5.74 0.16
9 0.0024 -47.94 -0.13 5.69 -0.03
10 0.0079 -153.70 -0.05 19.12 -0.13
11 0.0079 -154.58 -0.19 19.32 -0.01
12 0.0079 -155.18 -0.05 19.21 -0.22
13 0.0192 -364.92 0.10 49.41 0.02
14 0.0192 -365.20 0.01 48.88 -0.54
15 0.0192 -365.73 0.26 49.43 -0.10
16 0.0193 -366.67 -0.11 49.82 0.21
17 0.0193 -366.88 -0.12 49.53 -0.11
18 0.0215 -406.85 0.38 55.76 -0.30
19 0.0216 -407.94 -0.13 56.53 0.37
20 0.0216 -408.19 -0.18 56.33 0.15
21 0.0216 -408.19 0.01 56.33 0.12
22 0.0216 -408.47 -0.08 56.22 -0.02
23 0.0216 -408.75 0.02 56.12 -0.18
24 0.0216 -409.49 -0.14 56.37 -0.01
25 0.0872 -1318.91 0.14 280.08 -0.09
26 0.0872 -1319.33 -0.07 280.35 0.10
27 0.0872 -1319.12 0.24 280.22 -0.07
28 0.0873 -1319.65 -0.08 280.34 -0.03
29 0.0875 -1321.51 0.21 281.46 0.26
30 0.0875 -1322.17 -0.05 281.95 0.60
31 0.0954 -1391.85 -0.15 312.29 -0.17
32 0.0954 -1391.99 -0.11 312.23 -0.31
33 0.0954 -1392.09 -0.12 312.09 -0.49
34 0.0956 -1393.25 -0.20 313.04 -0.03
35 0.0957 -1393.57 0.25 313.46 0.05
36 0.0985 -1416.35 -0.03 324.66 0.03
37 0.0985 -1416.28 0.12 324.90 0.22
38 0.0985 -1416.56 -0.08 324.79 0.08
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.