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: 17BM233
# Created Sun Apr 27 01:11:02 2025
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 0.90y
# First observation: 2016/04/02
# Last observation: 2017/02/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000064 0.024171 -0.000000 -0.000237 0.024078 0.000000
# Chi-squared of fit: 10.99 DOF: 54 RMS: 0.11
# Min/Max residuals: -0.29 0.22
# Exact a, adot, b, bdot, g, gdot:
1.469848E-05 2.412434E-02 -4.633898E-09 -2.361091E-04 2.451010E-02 1.176047E-04
# Covariance matrix:
3.3084E-13 3.6662E-12 2.1271E-14 -7.9890E-14 1.6896E-12 1.3990E-10
3.6662E-12 3.6348E-10 1.5521E-12 -7.0004E-12 1.2606E-10 1.1973E-08
2.1271E-14 1.5521E-12 1.9037E-13 -2.5928E-13 5.5364E-13 5.1683E-11
-7.9890E-14 -7.0004E-12 -2.5928E-13 5.2799E-13 -2.4458E-12 -2.3137E-10
1.6896E-12 1.2606E-10 5.5364E-13 -2.4458E-12 4.4845E-11 4.1936E-09
1.3990E-10 1.1973E-08 5.1683E-11 -2.3137E-10 4.1936E-09 3.9607E-07
# lat0 lon0 xBary yBary zBary JD0
3.054897 -175.368958 -0.141320 0.052660 -0.984130 2457480.904541
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 14.84690 +/- 42.850
Argument of Peri: 84.97413 +/- 45.861
Long of Asc Node: 84.01188 +/- 0.038
Inclination: 3.03646 +/- 0.000
Eccentricity: 0.03205512 +/- 0.0079
Semi-Major Axis: 43.12088029 +/- 0.0368
Time of Perihelion: 2453215.0655 +/- 12310.5
Perihelion: 41.73863520 +/- 0.3425
Aphelion: 44.50312539 +/- 0.3427
Period (y) 283.1650 +/- 0.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.58314953 +/- 0.0111
Ecliptic Y -3.51250191 +/- 0.0009
Ecliptic Z 2.17434170 +/- 0.0006
Ecliptic XDOT 0.00020320 +/- 0.0001
Ecliptic YDOT -0.00269412 +/- 0.0000
Ecliptic ZDOT -0.00002563 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.78784221 +/- 0.0110
Geocenter to KBO 40.79950555 +/- 0.0111
# Hcoef: 8.75
The following table shows the complete astrometric record for 17BM233. 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 (17BM233) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.403752 12 21 50.85 +00 57 50.5 17BM233 T09 C~81Bn 2016 04 02.523267 12 21 50.30 +00 57 54.0 17BM233 T09 C~81Bn 2016 04 04.35736 12 21 42.13 +00 58 45.5 26.3g 17BM233 T09 C~89UT 2016 04 04.39588 12 21 41.96 +00 58 46.3 26.0g 17BM233 T09 C~89UT 2016 04 04.41948 12 21 41.86 +00 58 46.8 26.2g 17BM233 T09 C~89UT 2016 06 04.26227 12 18 32.48 +01 16 03.8 24.6z 17BM233 T09 C~8COq 2016 06 04.27850 12 18 32.47 +01 16 04.2 24.7z 17BM233 T09 C~8COq 2016 06 04.29466 12 18 32.46 +01 16 04.2 24.3z 17BM233 T09 C~8COq 2016 06 05.317193 12 18 31.38 +01 16 06.3 17BM233 T09 C~81Bn 2016 06 05.345518 12 18 31.35 +01 16 06.3 17BM233 T09 C~81Bn 2017 01 23.62432 12 30 57.36 -00 04 23.1 25.1i 17BM233 T09 C~7zpa 2017 01 23.63041 12 30 57.36 -00 04 23.1 25.0i 17BM233 T09 C~7zpa 2017 01 23.63574 12 30 57.35 -00 04 23.1 24.4i 17BM233 T09 C~7zpa 2017 01 23.64112 12 30 57.33 -00 04 23.1 24.7i 17BM233 T09 C~7zpa 2017 01 23.64653 12 30 57.31 -00 04 22.7 24.7i 17BM233 T09 C~7zpa 2017 01 23.65191 12 30 57.32 -00 04 22.7 24.8i 17BM233 T09 C~7zpa 2017 01 23.65460 12 30 57.31 -00 04 22.9 24.6i 17BM233 T09 C~7zpa 2017 01 28.60612 12 30 49.25 -00 03 09.8 24.7z 17BM233 T09 C~7zpa 2017 01 28.61148 12 30 49.23 -00 03 09.8 24.5z 17BM233 T09 C~7zpa 2017 01 28.61691 12 30 49.22 -00 03 09.8 24.6z 17BM233 T09 C~7zpa 2017 01 28.62228 12 30 49.21 -00 03 09.7 24.4z 17BM233 T09 C~7zpa 2017 01 28.63916 12 30 49.17 -00 03 09.3 24.1z 17BM233 T09 C~7zpa 2017 02 01.64621 12 30 41.13 -00 02 01.6 24.6i 17BM233 T09 C~7zpa 2017 02 01.64893 12 30 41.12 -00 02 01.6 24.8i 17BM233 T09 C~7zpa 2017 02 01.65707 12 30 41.11 -00 02 01.5 25.4i 17BM233 T09 C~7zpa 2017 02 01.65978 12 30 41.10 -00 02 01.3 24.5i 17BM233 T09 C~7zpa 2017 02 01.66249 12 30 41.10 -00 02 01.3 25.0i 17BM233 T09 C~7zpa 2017 02 23.53583 12 29 36.81 +00 06 04.7 25.0r 17BM233 T09 C~7zpa 2017 02 23.57406 12 29 36.67 +00 06 05.5 24.8r 17BM233 T09 C~7zpa 2017 02 23.60592 12 29 36.55 +00 06 06.5 25.2r 17BM233 T09 C~7zpa
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 0.18 0.00 -0.03
2 0.0003 -8.96 0.03 -0.06 0.06
3 0.0053 -141.87 -0.24 -1.37 0.15
4 0.0055 -144.53 -0.08 -1.64 -0.08
5 0.0055 -146.10 0.08 -1.78 -0.18
6 0.1721 -3164.90 -0.03 -175.60 -0.25
7 0.1721 -3165.19 -0.04 -175.29 0.14
8 0.1722 -3165.33 0.09 -175.35 0.15
9 0.1750 -3181.04 -0.01 -179.84 0.04
10 0.1751 -3181.45 0.02 -180.02 -0.00
11 0.8110 9011.54 -0.02 -175.19 0.07
12 0.8110 9011.54 0.14 -175.19 0.05
13 0.8110 9011.41 0.14 -175.25 -0.03
14 0.8111 9011.13 0.00 -175.37 -0.17
15 0.8111 9010.69 -0.29 -175.12 0.06
16 0.8111 9010.83 -0.01 -175.06 0.10
17 0.8111 9010.77 -0.00 -175.30 -0.15
18 0.8246 8870.53 0.16 -156.16 0.22
19 0.8247 8870.25 0.06 -156.28 0.08
20 0.8247 8870.12 0.10 -156.34 0.00
21 0.8247 8869.94 0.10 -156.31 0.02
22 0.8247 8869.23 -0.05 -156.18 0.09
23 0.8357 8731.41 -0.09 -141.88 -0.01
24 0.8357 8731.28 -0.12 -141.94 -0.08
25 0.8357 8731.10 0.01 -141.90 -0.07
26 0.8357 8730.88 -0.10 -141.78 0.04
27 0.8358 8730.88 0.00 -141.78 0.04
28 0.8956 7651.15 -0.04 -78.30 -0.02
29 0.8957 7648.90 0.05 -78.40 -0.19
30 0.8958 7646.85 -0.04 -78.19 -0.04
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.
17BM233 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.682 43.151 42.583 ecceobj 0.023 0.084 0.033 incobj 3.036 3.035 3.036 qmin 40.658 37.986 40.783 qmax 45.285 48.959 45.006 amean 42.880 43.346 42.786 amin 42.556 42.996 42.455 amax 43.211 43.728 43.123 emean 0.028 0.096 0.024 emin 0.008 0.074 0.003 emax 0.049 0.120 0.044 imean 1.264 1.524 1.151 imin 0.174 0.199 0.020 imax 2.155 2.664 2.019 excite_mean 0.036 0.100 0.033 fracstop 1.000 1.000 1.000 cjmean 3.087 3.082 3.086 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 187.6 173.3 194.7 kozaiamp 180.0 179.9 180.0