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: 17BA241 # Created Mon Jul 7 01:11:24 2025 # Orbit generated from Bernstein formalism # Fitting 46 observations of 47 # Arc: 2.27y # First observation: 2016/12/25 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000007 0.029875 0.000000 0.006140 0.027117 0.000000 # Chi-squared of fit: 46.78 DOF: 86 RMS: 0.18 # Min/Max residuals: -0.49 0.40 # Exact a, adot, b, bdot, g, gdot: 1.757557E-05 2.963830E-02 2.042083E-06 6.099719E-03 2.685491E-02 3.727926E-06 # Covariance matrix: 1.1752E-13 -1.5855E-14 6.9882E-15 4.5385E-15 1.2073E-13 5.4352E-13 -1.5855E-14 9.6582E-13 -1.6442E-14 2.1767E-13 2.8920E-13 1.9477E-11 6.9882E-15 -1.6442E-14 4.4724E-14 -4.0611E-14 5.9125E-15 -3.6518E-13 4.5385E-15 2.1767E-13 -4.0611E-14 1.6250E-13 7.2295E-14 4.9377E-12 1.2073E-13 2.8920E-13 5.9125E-15 7.2295E-14 2.7399E-13 6.6821E-12 5.4352E-13 1.9477E-11 -3.6518E-13 4.9377E-12 6.6821E-12 4.4198E-10 # lat0 lon0 xBary yBary zBary JD0 -10.074091 152.511738 0.844473 -0.089250 -0.503479 2457748.018999 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 355.40062 +/- 0.138 Argument of Peri: 325.69909 +/- 0.222 Long of Asc Node: 191.83964 +/- 0.002 Inclination: 15.05898 +/- 0.000 Eccentricity: 0.21879392 +/- 0.0001 Semi-Major Axis: 48.25373321 +/- 0.0048 Time of Perihelion: 2459304.6977 +/- 47.0 Perihelion: 37.69611000 +/- 0.0051 Aphelion: 58.81135641 +/- 0.0068 Period (y) 335.2004 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.59150412 +/- 0.0006 Ecliptic Y 17.90311998 +/- 0.0003 Ecliptic Z -6.51353994 +/- 0.0001 Ecliptic XDOT -0.00148895 +/- 0.0000 Ecliptic YDOT -0.00263682 +/- 0.0000 Ecliptic ZDOT 0.00061216 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.75121254 +/- 0.0006 Geocenter to KBO 37.23713220 +/- 0.0007 # Hcoef: 9.61
The following table shows the complete astrometric record for 17BA241. 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 (17BA241) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.51821 10 03 31.36 +01 09 43.9 26.3r 17BA241 T09 C~8COq 2016 12 25.54616 10 03 31.30 +01 09 44.2 25.6r 17BA241 T09 C~8COq 2016 12 25.59402 10 03 31.17 +01 09 43.7 25.4i 17BA241 T09 C~8COq 2017 01 02.527242 10 03 09.57 +01 10 18.2 17BA241 T09 C~86ul 2017 01 21.41782 10 01 59.37 +01 14 19.3 24.8z 17BA241 T09 C~86ul 2017 01 21.44099 10 01 59.28 +01 14 19.7 24.2z 17BA241 T09 C~86ul 2017 01 21.45826 10 01 59.21 +01 14 20.3 24.5z 17BA241 T09 C~86ul 2017 01 21.48580 10 01 59.10 +01 14 20.7 24.6z 17BA241 T09 C~86ul 2017 01 21.51187 10 01 58.98 +01 14 21.2 24.7z 17BA241 T09 C~86ul 2017 01 21.56003 10 01 58.79 +01 14 22.2 24.9z 17BA241 T09 C~86ul 2017 01 21.60289 10 01 58.56 +01 14 23.3 25.5z 17BA241 T09 C~86ul 2017 01 23.36273 10 01 50.92 +01 14 56.1 25.6r 17BA241 T09 C~86ul 2017 01 23.39642 10 01 50.80 +01 14 56.9 26.2r 17BA241 T09 C~86ul 2017 01 23.41024 10 01 50.75 +01 14 56.9 25.3r 17BA241 T09 C~86ul 2017 01 23.52068 10 01 50.25 +01 14 59.1 25.7i 17BA241 T09 C~86ul 2017 01 23.59193 10 01 49.94 +01 15 00.4 25.1i 17BA241 T09 C~86ul 2017 01 30.417075 10 01 18.93 +01 17 26.6 17BA241 T09 C~86ul 2017 01 30.461253 10 01 18.71 +01 17 27.6 17BA241 T09 C~86ul 2017 01 30.50547 10 01 18.50 +01 17 28.5 24.8z 17BA241 T09 C~8COq 2017 01 30.56834 10 01 18.18 +01 17 30.0 24.7z 17BA241 T09 C~8COq 2017 01 30.59415 10 01 18.07 +01 17 30.1 24.4z 17BA241 T09 C~8COq 2017 01 30.61597 10 01 17.96 +01 17 31.0 24.8z 17BA241 T09 C~8COq 2017 02 23.45915 09 59 21.20 +01 28 41.0 25.8r 17BA241 T09 C~8COq 2017 02 23.46720 09 59 21.15 +01 28 41.5 25.9r 17BA241 T09 C~8COq 2017 02 23.48087 09 59 21.11 +01 28 41.7 25.6r 17BA241 T09 C~8COq 2017 02 23.49450 09 59 21.03 +01 28 42.3 26.1r 17BA241 T09 C~8COq 2017 02 23.50391 09 59 20.96 +01 28 42.5 25.7r 17BA241 T09 C~8COq 2017 02 25.431227 09 59 11.52 +01 29 44.8 17BA241 T09 C~86ul 2017 03 04.29255 09 58 38.43 +01 33 32.6 24.5z 17BA241 T09 C~8vIb 2017 03 04.31803 09 58 38.31 +01 33 33.3 24.4z 17BA241 T09 C~8vIb 2017 03 04.34360 09 58 38.15 +01 33 34.5 24.6z 17BA241 T09 C~8vIb 2017 03 04.44514 09 58 37.69 +01 33 37.7 25.1i 17BA241 T09 C~8COq 2017 03 04.455995 09 58 37.64 +01 33 37.9 17BA241 T09 C~86ul 2017 03 04.47782 09 58 37.52 +01 33 38.7 24.9i 17BA241 T09 C~8COq 2017 03 04.499506 09 58 37.43 +01 33 39.6 17BA241 T09 C~86ul 2017 03 23.252126 09 57 16.16 +01 44 22.9 17BA241 T09 C~86ul 2017 03 23.273899 09 57 16.08 +01 44 23.6 17BA241 T09 C~86ul 2017 03 25.26003 09 57 08.55 +01 45 31.4 25.6r 17BA241 T09 C~8COq 2017 03 25.27375 09 57 08.50 +01 45 31.4 25.4r 17BA241 T09 C~8COq 2017 03 25.28747 09 57 08.47 +01 45 32.6 26.0r 17BA241 T09 C~8COq 2018 01 17.461210 10 09 11.64 +00 56 32.2 17BA241 T09 C~86ul 2018 01 17.49135 10 09 11.50 +00 56 32.4 25.2i 17BA241 T09 C~8COq 2018 01 17.51296 10 09 11.44 +00 56 32.9 25.7i 17BA241 T09 C~8COq 2018 01 17.599000 10 09 11.09 +00 56 34.4 17BA241 T09 C~86ul 2019 01 04.480837 10 16 50.60 +00 37 24.1 17BA241 T09 C~86ul 2019 01 11.503725 10 16 28.51 +00 38 30.3 17BA241 T09 C~86ul 2019 04 05.369564 10 10 20.76 +01 18 23.4 17BA241 T09 C~86ul
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 -0.03 0.00 0.32
2 0.0001 -0.95 ( 0.01) -0.04 ( 0.60)
3 0.0002 -2.60 0.05 -1.19 -0.00
4 0.0219 -317.86 -0.01 -83.24 0.18
5 0.0736 -1388.00 -0.20 -229.13 -0.16
6 0.0737 -1389.41 -0.04 -229.23 -0.12
7 0.0738 -1390.60 -0.06 -229.04 0.17
8 0.0738 -1392.29 0.13 -229.25 0.13
9 0.0739 -1394.15 0.05 -229.42 0.12
10 0.0740 -1397.17 0.31 -229.49 0.34
11 0.0742 -1400.78 -0.39 -229.67 0.40
12 0.0790 -1519.57 -0.39 -239.41 -0.20
13 0.0791 -1521.53 -0.02 -239.29 0.09
14 0.0791 -1522.23 0.24 -239.56 -0.10
15 0.0794 -1530.03 0.15 -240.14 -0.08
16 0.0796 -1534.83 0.32 -240.57 -0.12
17 0.0983 -2021.59 0.15 -267.82 0.17
18 0.0984 -2025.03 0.03 -268.05 0.10
19 0.0985 -2028.29 0.09 -268.32 -0.01
20 0.0987 -2033.31 -0.21 -268.61 -0.07
21 0.0988 -2034.89 0.15 -269.10 -0.47
22 0.0988 -2036.75 -0.08 -268.84 -0.13
23 0.1641 -3911.83 0.01 -259.35 -0.25
24 0.1641 -3912.71 -0.21 -259.15 -0.07
25 0.1642 -3913.34 0.27 -259.17 -0.15
26 0.1642 -3914.68 0.05 -259.03 -0.05
27 0.1642 -3915.73 -0.23 -259.22 -0.27
28 0.1695 -4070.22 0.11 -250.82 -0.06
29 0.1883 -4615.08 0.06 -212.54 0.15
30 0.1884 -4617.01 0.15 -212.52 0.02
31 0.1884 -4619.68 -0.49 -212.24 0.14
32 0.1887 -4627.27 0.01 -211.68 0.09
33 0.1887 -4628.04 0.10 -211.76 -0.06
34 0.1888 -4630.01 -0.13 -211.64 -0.08
35 0.1889 -4631.59 0.01 -211.28 0.16
36 0.2402 -5999.57 0.02 -38.59 0.00
37 0.2403 -6000.94 0.11 -38.36 -0.01
38 0.2457 -6130.60 -0.16 -14.66 -0.02
39 0.2457 -6131.30 0.03 -14.93 -0.44
40 0.2458 -6132.14 0.09 -13.96 0.36
41 1.0621 5055.14 -0.05 1061.85 0.06
42 1.0622 5053.11 -0.21 1061.29 -0.29
43 1.0623 5052.09 0.12 1061.44 0.00
44 1.0625 5046.64 0.04 1060.99 0.13
45 2.0259 11912.87 -0.04 2424.53 0.05
46 2.0451 11578.42 -0.01 2369.02 0.03
47 2.2747 5561.93 0.10 2655.52 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.
17BA241 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.014 48.039 47.989 ecceobj 0.213 0.214 0.213 incobj 15.099 15.099 15.100 qmin 36.921 36.807 36.680 qmax 59.543 59.824 59.813 amean 47.797 47.797 47.797 amin 47.130 47.101 47.148 amax 48.567 48.596 48.529 emean 0.202 0.210 0.211 emin 0.174 0.190 0.184 emax 0.229 0.232 0.234 imean 15.309 15.181 14.994 imin 14.681 14.578 14.525 imax 16.013 15.658 15.683 excite_mean 0.333 0.336 0.334 fracstop 1.000 1.000 1.000 cjmean 3.010 3.007 3.009 libcent 0 179.1 179.1 179.4 libamp 0 173.7 168.6 163.9 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 169.4 169.9 161.4 kozaiamp 180.0 179.9 180.0