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: 17FU231 # Created Tue May 7 01:17:27 2024 # Orbit generated from Bernstein formalism # Fitting 45 observations of 45 # Arc: 86.95d # First observation: 2017/01/30 # Last observation: 2017/04/27 Preliminary a, adot, b, bdot, g, gdot: -0.000015 0.027305 0.000028 -0.009940 0.024327 0.000000 # Chi-squared of fit: 22.08 DOF: 84 RMS: 0.12 # Min/Max residuals: -0.33 0.30 # Exact a, adot, b, bdot, g, gdot: 1.271667E-05 1.977710E-02 -6.964918E-06 -9.565560E-03 2.314498E-02 7.217654E-04 # Covariance matrix: 2.2604E-13 -4.1203E-12 -7.7535E-15 -2.8346E-14 -9.2347E-14 1.0934E-10 -4.1203E-12 2.9311E-09 1.1028E-11 -1.0328E-10 3.6646E-10 -3.7641E-08 -7.7535E-15 1.1028E-11 1.9792E-13 -1.2718E-12 1.4029E-12 -1.3735E-10 -2.8346E-14 -1.0328E-10 -1.2718E-12 1.0138E-11 -1.3618E-11 1.1837E-09 -9.2347E-14 3.6646E-10 1.4029E-12 -1.3618E-11 4.7404E-11 -4.3960E-09 1.0934E-10 -3.7641E-08 -1.3735E-10 1.1837E-09 -4.3960E-09 5.5314E-07 # lat0 lon0 xBary yBary zBary JD0 -9.686054 153.038515 0.383241 -0.152713 -0.895786 2457783.917891 # Heliocentric elements and errors Epoch: 2457780.5000 = 2017/01/27 Mean Anomaly: 61.37500 +/- 37.855 Argument of Peri: 137.10680 +/- 41.881 Long of Asc Node: 313.76731 +/- 0.044 Inclination: 27.44072 +/- 0.052 Eccentricity: 0.02415214 +/- 0.0294 Semi-Major Axis: 44.60008536 +/- 0.0696 Time of Perihelion: 2439232.7616 +/- 11439.8 Perihelion: 43.52289798 +/- 1.3129 Aphelion: 45.67727274 +/- 1.3131 Period (y) 297.8597 +/- 0.70 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.60064644 +/- 0.0113 Ecliptic Y 20.05888152 +/- 0.0057 Ecliptic Z -7.26969364 +/- 0.0022 Ecliptic XDOT -0.00096312 +/- 0.0001 Ecliptic YDOT -0.00214004 +/- 0.0000 Ecliptic ZDOT -0.00112982 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.10461516 +/- 0.0102 Geocenter to KBO 43.20591959 +/- 0.0129 # Hcoef: 8.73
The following table shows the complete astrometric record for 17FU231. 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 (17FU231) followed by the observatory code and reference code for the source of the astrometry.
2017 01 30.41709 10 06 00.84 +01 20 29.5 24.8i 17FU231 T09 C~7wO8 2017 01 30.46126 10 06 00.63 +01 20 30.0 24.6i 17FU231 T09 C~7wO8 2017 01 30.59415 10 06 00.04 +01 20 31.7 24.7z 17FU231 T09 C~7wO8 2017 01 30.61597 10 05 59.94 +01 20 32.0 24.3z 17FU231 T09 C~7wO8 2017 02 02.50623 10 05 47.25 +01 21 11.9 25.2r 17FU231 T09 C~7ujV 2017 02 02.57410 10 05 46.95 +01 21 12.7 24.2i 17FU231 T09 C~7ujV 2017 02 02.59348 10 05 46.87 +01 21 13.2 24.3i 17FU231 T09 C~7ujV 2017 03 04.29603 10 03 31.18 +01 30 34.0 24.5z 17FU231 T09 C~7ujV 2017 03 04.32155 10 03 31.05 +01 30 34.5 24.5z 17FU231 T09 C~7ujV 2017 03 04.48135 10 03 30.31 +01 30 38.2 24.9i 17FU231 T09 C~7ujV 2017 03 04.50300 10 03 30.22 +01 30 38.6 25.1i 17FU231 T09 C~7ujV 2017 03 22.27563 10 02 16.36 +01 37 20.9 26.1g 17FU231 T09 C~7ujV 2017 03 22.28630 10 02 16.31 +01 37 21.4 25.8g 17FU231 T09 C~7ujV 2017 03 22.28946 10 02 16.28 +01 37 21.6 25.6g 17FU231 T09 C~7ujV 2017 03 22.30012 10 02 16.24 +01 37 21.6 25.5g 17FU231 T09 C~7ujV 2017 03 22.31401 10 02 16.20 +01 37 21.9 25.7g 17FU231 T09 C~7ujV 2017 03 23.24138 10 02 12.72 +01 37 42.9 24.7i 17FU231 T09 C~7ujV 2017 03 23.25564 10 02 12.65 +01 37 43.3 24.3i 17FU231 T09 C~7ujV 2017 03 23.26317 10 02 12.62 +01 37 43.5 24.5i 17FU231 T09 C~7ujV 2017 03 23.27742 10 02 12.57 +01 37 43.6 24.5i 17FU231 T09 C~7ujV 2017 03 23.28492 10 02 12.54 +01 37 44.0 25.1i 17FU231 T09 C~7ujV 2017 03 25.26248 10 02 05.25 +01 38 28.7 25.6r 17FU231 T09 C~7ujV 2017 03 25.26562 10 02 05.24 +01 38 28.5 25.0r 17FU231 T09 C~7ujV 2017 03 25.27935 10 02 05.20 +01 38 29.0 25.3r 17FU231 T09 C~7ujV 2017 03 25.28995 10 02 05.17 +01 38 29.0 25.3r 17FU231 T09 C~7ujV 2017 03 29.26967 10 01 51.14 +01 39 57.4 25.6g 17FU231 T09 C~7ujV 2017 03 29.29433 10 01 51.06 +01 39 58.2 25.7g 17FU231 T09 C~7ujV 2017 03 29.31142 10 01 51.00 +01 39 58.6 25.7g 17FU231 T09 C~7ujV 2017 03 30.25151 10 01 47.82 +01 40 19.2 25.5i 17FU231 T09 C~7ujV 2017 03 30.26700 10 01 47.78 +01 40 19.6 25.5i 17FU231 T09 C~7ujV 2017 03 30.28622 10 01 47.70 +01 40 19.9 26.1i 17FU231 T09 C~7ujV 2017 04 01.33958 10 01 40.96 +01 41 04.1 25.3r 17FU231 T09 C~7ujV 2017 04 01.34723 10 01 40.94 +01 41 04.6 25.5r 17FU231 T09 C~7ujV 2017 04 01.35489 10 01 40.91 +01 41 04.8 25.1r 17FU231 T09 C~7ujV 2017 04 23.24251 10 00 46.97 +01 48 04.4 25.0r 17FU231 T09 C~7ujV 2017 04 23.25033 10 00 46.97 +01 48 04.6 25.6r 17FU231 T09 C~7ujV 2017 04 23.25417 10 00 46.96 +01 48 04.6 25.4r 17FU231 T09 C~7ujV 2017 04 23.26183 10 00 46.94 +01 48 04.9 25.6r 17FU231 T09 C~7ujV 2017 04 26.23645 10 00 42.40 +01 48 51.1 24.6i 17FU231 T09 C~7ujV 2017 04 26.26326 10 00 42.36 +01 48 51.8 25.3i 17FU231 T09 C~7ujV 2017 04 26.28251 10 00 42.31 +01 48 51.8 25.2i 17FU231 T09 C~7ujV 2017 04 26.33400 10 00 42.27 +01 48 52.8 25.8g 17FU231 T09 C~7ujV 2017 04 27.34452 10 00 40.88 +01 49 07.7 24.8i 17FU231 T09 C~7ujV 2017 04 27.35218 10 00 40.88 +01 49 07.9 24.9i 17FU231 T09 C~7ujV 2017 04 27.36375 10 00 40.85 +01 49 07.9 24.6i 17FU231 T09 C~7ujV
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 0.16 0.00 0.09
2 0.0001 -3.12 -0.01 -0.65 -0.06
3 0.0005 -12.00 -0.03 -2.20 -0.11
4 0.0005 -13.51 -0.08 -2.45 -0.12
5 0.0085 -205.58 -0.14 -32.63 0.07
6 0.0086 -210.07 0.01 -33.47 -0.06
7 0.0087 -211.37 0.03 -33.43 0.19
8 0.0900 -2312.85 0.30 -230.38 0.02
9 0.0901 -2314.85 0.12 -230.60 -0.11
10 0.0905 -2326.53 -0.16 -231.08 -0.04
11 0.0906 -2327.94 -0.02 -231.18 -0.07
12 0.1392 -3506.36 0.30 -247.39 -0.10
13 0.1393 -3507.24 0.08 -247.19 0.09
14 0.1393 -3507.73 -0.21 -247.16 0.12
15 0.1393 -3508.29 -0.11 -247.37 -0.10
16 0.1393 -3508.96 0.09 -247.31 -0.04
17 0.1419 -3565.21 0.14 -246.15 0.01
18 0.1419 -3566.33 -0.10 -246.15 -0.00
19 0.1419 -3566.82 -0.13 -246.12 0.02
20 0.1420 -3567.56 0.01 -246.29 -0.17
21 0.1420 -3568.12 -0.10 -246.08 0.04
22 0.1474 -3686.21 -0.19 -243.00 0.20
23 0.1474 -3686.28 -0.07 -243.24 -0.05
24 0.1475 -3687.02 0.01 -242.98 0.19
25 0.1475 -3687.44 0.23 -243.14 0.02
26 0.1584 -3915.55 0.01 -234.99 -0.14
27 0.1585 -3916.96 -0.00 -234.66 0.13
28 0.1585 -3917.94 -0.02 -234.61 0.15
29 0.1611 -3969.85 -0.15 -232.23 0.07
30 0.1611 -3970.55 0.01 -232.07 0.20
31 0.1612 -3971.78 -0.15 -232.21 0.01
32 0.1668 -4081.98 0.09 -226.67 -0.33
33 0.1668 -4082.44 0.05 -226.31 0.01
34 0.1668 -4082.93 -0.03 -226.28 0.02
35 0.2268 -4988.28 -0.05 -120.24 -0.03
36 0.2268 -4988.35 0.11 -120.05 0.11
37 0.2268 -4988.49 0.08 -120.10 0.03
38 0.2268 -4988.87 -0.07 -119.93 0.16
39 0.2350 -5068.94 0.06 -100.81 -0.14
40 0.2350 -5069.74 -0.05 -100.37 0.13
41 0.2351 -5070.45 -0.25 -100.64 -0.26
42 0.2352 -5071.36 0.18 -99.91 0.14
43 0.2380 -5096.14 -0.01 -93.35 -0.11
44 0.2380 -5096.21 0.11 -93.17 0.03
45 0.2380 -5096.63 -0.03 -93.33 -0.21
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.
17FU231 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.406 44.787 44.253 ecceobj 0.027 0.064 0.028 incobj 27.476 27.315 27.533 qmin 42.752 41.285 42.644 qmax 46.275 48.676 46.152 amean 44.445 44.861 44.298 amin 44.110 44.512 43.971 amax 44.792 45.216 44.636 emean 0.024 0.065 0.025 emin 0.015 0.054 0.015 emax 0.034 0.077 0.034 imean 28.853 28.714 28.912 imin 28.615 28.450 28.675 imax 29.078 28.948 29.144 excite_mean 0.483 0.485 0.484 fracstop 1.000 1.000 1.000 cjmean 2.804 2.807 2.802 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 179.3 193.5 177.6 kozaiamp 179.9 180.0 179.9