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: 17BN235
# Created Mon Apr 28 01:11:03 2025
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 23
# Arc: 0.90y
# First observation: 2016/04/02
# Last observation: 2017/02/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000031 0.020639 -0.000000 0.000813 0.022080 0.000000
# Chi-squared of fit: 7.61 DOF: 40 RMS: 0.10
# Min/Max residuals: -0.31 0.20
# Exact a, adot, b, bdot, g, gdot:
1.403678E-05 2.061865E-02 8.135417E-07 8.218610E-04 2.244403E-02 9.049231E-04
# Covariance matrix:
2.8339E-13 3.0825E-12 2.0182E-15 7.4973E-14 1.4796E-12 1.3475E-10
3.0825E-12 3.2893E-10 1.0443E-13 6.7131E-12 1.1873E-10 1.2413E-08
2.0182E-15 1.0443E-13 2.0442E-13 -2.4494E-13 4.3597E-14 4.1352E-12
7.4973E-14 6.7131E-12 -2.4494E-13 5.7607E-13 2.4686E-12 2.5503E-10
1.4796E-12 1.1873E-10 4.3597E-14 2.4686E-12 4.4598E-11 4.5409E-09
1.3475E-10 1.2413E-08 4.1352E-12 2.5503E-10 4.5409E-09 4.7078E-07
# lat0 lon0 xBary yBary zBary JD0
2.119206 -173.873678 -0.115375 0.036708 -0.988226 2457480.894196
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 107.88960 +/- 15.851
Argument of Peri: 289.19217 +/- 15.504
Long of Asc Node: 143.92782 +/- 0.025
Inclination: 3.07595 +/- 0.001
Eccentricity: 0.04964270 +/- 0.0296
Semi-Major Axis: 44.76739193 +/- 0.1510
Time of Perihelion: 2424692.2517 +/- 4814.4
Perihelion: 42.54501780 +/- 1.3335
Aphelion: 46.98976606 +/- 1.3352
Period (y) 299.5373 +/- 1.52
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -45.24518326 +/- 0.0132
Ecliptic Y -4.97464735 +/- 0.0014
Ecliptic Z 1.64765545 +/- 0.0005
Ecliptic XDOT 0.00016253 +/- 0.0001
Ecliptic YDOT -0.00251917 +/- 0.0000
Ecliptic ZDOT 0.00010428 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.54765079 +/- 0.0131
Geocenter to KBO 44.55528751 +/- 0.0133
# Hcoef: 8.78
The following table shows the complete astrometric record for 17BN235. 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 (17BN235) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.393407 12 25 51.11 -00 29 12.2 17BN235 T09 C~81Bn 2016 04 02.517894 12 25 50.59 -00 29 08.9 17BN235 T09 C~81Bn 2016 04 04.34883 12 25 43.02 -00 28 19.7 26.0g 17BN235 T09 C~8COq 2016 04 04.38940 12 25 42.86 -00 28 18.4 26.0g 17BN235 T09 C~8COq 2016 04 04.40858 12 25 42.80 -00 28 18.2 26.3g 17BN235 T09 C~8COq 2016 04 04.41735 12 25 42.76 -00 28 18.0 26.0g 17BN235 T09 C~8COq 2016 06 05.311488 12 22 42.59 -00 10 17.4 17BN235 T09 C~81Bn 2016 06 05.351866 12 22 42.54 -00 10 17.2 17BN235 T09 C~81Bn 2017 01 28.64259 12 33 51.19 -01 19 45.4 24.8z 17BN235 T09 C~7zpg 2017 01 28.64528 12 33 51.19 -01 19 45.4 24.5z 17BN235 T09 C~7zpg 2017 01 28.65069 12 33 51.17 -01 19 45.4 25.2z 17BN235 T09 C~7zpg 2017 01 28.65336 12 33 51.18 -01 19 45.4 25.1z 17BN235 T09 C~7zpg 2017 01 28.65605 12 33 51.17 -01 19 45.4 24.7z 17BN235 T09 C~7zpg 2017 02 02.60942 12 33 42.01 -01 18 30.7 25.0i 17BN235 T09 C~7zpg 2017 02 02.61925 12 33 42.00 -01 18 30.5 25.6i 17BN235 T09 C~7zpg 2017 02 02.62764 12 33 41.98 -01 18 30.3 24.8i 17BN235 T09 C~7zpg 2017 02 02.63614 12 33 41.97 -01 18 30.0 25.2i 17BN235 T09 C~7zpg 2017 02 02.64454 12 33 41.95 -01 18 30.0 25.2i 17BN235 T09 C~7zpg 2017 02 02.64725 12 33 41.94 -01 18 30.0 25.4i 17BN235 T09 C~7zpg 2017 02 02.65294 12 33 41.92 -01 18 29.8 24.9i 17BN235 T09 C~7zpg 2017 02 23.52446 12 32 45.40 -01 11 29.1 25.8r 17BN235 T09 C~7zpg 2017 02 23.56555 12 32 45.27 -01 11 28.2 25.4r 17BN235 T09 C~7zpg 2017 02 23.63774 12 32 45.01 -01 11 26.5 25.4r 17BN235 T09 C~7zpg
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 0.10 0.00 -0.05
2 0.0003 -8.47 0.17 -0.05 -0.07
3 0.0054 -132.22 -0.31 0.22 -0.07
4 0.0055 -134.93 -0.26 0.47 0.19
5 0.0055 -135.84 0.15 0.30 0.03
6 0.0055 -136.47 0.12 0.24 -0.02
7 0.1750 -3046.22 0.05 -76.31 -0.01
8 0.1751 -3046.99 -0.03 -76.42 -0.02
9 0.8248 7816.55 -0.08 60.17 0.06
10 0.8248 7816.55 0.00 60.17 0.06
11 0.8248 7816.27 -0.11 60.05 -0.08
12 0.8248 7816.41 0.10 60.11 -0.02
13 0.8248 7816.27 0.05 60.05 -0.09
14 0.8384 7660.35 -0.06 74.42 -0.15
15 0.8384 7660.14 0.07 74.55 -0.04
16 0.8384 7659.78 0.01 74.61 0.00
17 0.8384 7659.53 0.06 74.83 0.20
18 0.8385 7659.25 0.08 74.71 0.06
19 0.8385 7659.11 0.04 74.65 -0.01
20 0.8385 7658.76 -0.12 74.72 0.04
21 0.8956 6712.76 -0.04 126.36 0.03
22 0.8957 6710.61 0.11 126.41 0.02
23 0.8959 6706.35 -0.11 126.43 -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.
17BN235 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.320 45.194 44.093 ecceobj 0.055 0.135 0.040 incobj 3.086 3.088 3.085 qmin 41.019 38.219 41.815 qmax 48.225 52.888 46.978 amean 44.527 45.393 44.314 amin 44.177 45.004 43.976 amax 44.894 45.812 44.671 emean 0.059 0.139 0.038 emin 0.044 0.125 0.023 emax 0.075 0.155 0.052 imean 2.501 2.586 2.544 imin 1.964 1.982 1.959 imax 3.086 3.274 3.140 excite_mean 0.073 0.147 0.059 fracstop 1.000 1.000 1.000 cjmean 3.101 3.092 3.101 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 183.9 183.3 175.0 kozaiamp 180.0 180.0 180.0