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: 17BH241
# Created Sun Feb 23 02:10:59 2025
# Orbit generated from Bernstein formalism
# Fitting 21 observations of 21
# Arc: 0.82y
# First observation: 2016/04/02
# Last observation: 2017/01/28
Preliminary a, adot, b, bdot, g, gdot:
-0.000009 0.024957 -0.000001 0.000059 0.024894 0.000000
# Chi-squared of fit: 10.04 DOF: 36 RMS: 0.12
# Min/Max residuals: -0.41 0.21
# Exact a, adot, b, bdot, g, gdot:
1.520032E-05 2.528658E-02 -3.607760E-07 5.695688E-05 2.504918E-02 -2.302372E-03
# Covariance matrix:
3.1818E-13 4.0287E-11 1.2384E-14 -2.7260E-13 8.9545E-12 1.1383E-09
4.0287E-11 3.3566E-08 9.3710E-12 -2.3595E-10 6.3505E-09 9.1306E-07
1.2384E-14 9.3710E-12 1.4193E-13 -2.4000E-13 1.7838E-12 2.5523E-10
-2.7260E-13 -2.3595E-10 -2.4000E-13 2.1018E-12 -4.4524E-11 -6.4151E-09
8.9545E-12 6.3505E-09 1.7838E-12 -4.4524E-11 1.2145E-09 1.7312E-07
1.1383E-09 9.1306E-07 2.5523E-10 -6.4151E-09 1.7312E-07 2.4848E-05
# lat0 lon0 xBary yBary zBary JD0
2.212910 -176.172924 -0.155076 0.038113 -0.982728 2457480.901139
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 314.02245 +/- 43.381
Argument of Peri: 142.99799 +/- 64.226
Long of Asc Node: 97.10727 +/- 0.184
Inclination: 2.16259 +/- 0.000
Eccentricity: 0.11114389 +/- 0.1678
Semi-Major Axis: 43.99069254 +/- 1.3337
Time of Perihelion: 2471091.2782 +/- 12827.2
Perihelion: 39.10139601 +/- 7.4767
Aphelion: 48.87998907 +/- 7.5294
Period (y) 291.7759 +/- 13.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.77739599 +/- 0.0554
Ecliptic Y -2.88561117 +/- 0.0037
Ecliptic Z 1.54149569 +/- 0.0021
Ecliptic XDOT 0.00043572 +/- 0.0005
Ecliptic YDOT -0.00274782 +/- 0.0001
Ecliptic ZDOT -0.00000349 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.90842193 +/- 0.0552
Geocenter to KBO 39.92147171 +/- 0.0555
# Hcoef: 8.32
The following table shows the complete astrometric record for 17BH241. 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 (17BH241) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.40035 12 17 33.73 +00 30 35.1 24.0i 17BH241 T09 C~8eW4 2016 04 02.41462 12 17 33.66 +00 30 35.4 24.0i 17BH241 T09 C~8eW4 2016 04 02.43920 12 17 33.53 +00 30 36.3 24.0i 17BH241 T09 C~8eW4 2016 04 02.52328 12 17 33.15 +00 30 38.8 24.3i 17BH241 T09 C~8eW4 2016 04 04.39376 12 17 24.72 +00 31 32.3 25.2g 17BH241 T09 C~8eW4 2016 04 04.41295 12 17 24.65 +00 31 33.0 25.5g 17BH241 T09 C~8eW4 2016 04 15.36307 12 16 36.83 +00 36 32.6 24.2y 17BH241 T09 C~8eW4 2016 04 15.41093 12 16 36.62 +00 36 33.7 24.5y 17BH241 T09 C~8eW4 2016 04 15.43221 12 16 36.51 +00 36 33.9 24.6y 17BH241 T09 C~8eW4 2016 04 15.45396 12 16 36.43 +00 36 34.7 24.6y 17BH241 T09 C~8eW4 2016 04 15.46204 12 16 36.40 +00 36 34.9 23.9y 17BH241 T09 C~8eW5 2017 01 23.61026 12 27 04.29 -00 32 43.1 24.4i 17BH241 T09 C~86um 2017 01 23.61293 12 27 04.30 -00 32 43.1 24.3i 17BH241 T09 C~86um 2017 01 23.64112 12 27 04.26 -00 32 42.8 24.1i 17BH241 T09 C~86um 2017 01 23.64653 12 27 04.23 -00 32 42.6 24.3i 17BH241 T09 C~86um 2017 01 26.62617 12 26 59.33 -00 32 01.5 23.6z 17BH241 T09 C~86um 2017 01 26.62885 12 26 59.34 -00 32 01.3 24.1z 17BH241 T09 C~86um 2017 01 26.65302 12 26 59.28 -00 32 01.0 23.8z 17BH241 T09 C~86um 2017 01 28.60345 12 26 55.66 -00 31 31.2 24.4z 17BH241 T09 C~86um 2017 01 28.60879 12 26 55.65 -00 31 31.2 24.0z 17BH241 T09 C~86um 2017 01 28.61691 12 26 55.64 -00 31 31.2 24.1z 17BH241 T09 C~86um
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 0.08
2 0.0000 -1.08 0.14 -0.14 -0.05
3 0.0001 -3.23 -0.16 -0.09 0.03
4 0.0003 -9.45 -0.10 -0.06 0.14
5 0.0055 -146.75 -0.13 -1.14 -0.03
6 0.0055 -147.99 0.06 -0.91 0.21
7 0.0355 -925.26 0.03 -10.59 0.19
8 0.0356 -928.58 0.03 -10.83 0.03
9 0.0357 -930.18 -0.09 -11.30 -0.41
10 0.0357 -931.60 -0.00 -11.04 -0.11
11 0.0358 -932.09 0.06 -11.04 -0.10
12 0.8110 9369.27 -0.10 -88.91 0.05
13 0.8110 9369.40 0.11 -88.85 0.11
14 0.8111 9368.73 0.20 -88.81 0.07
15 0.8111 9368.24 -0.14 -88.81 0.06
16 0.8192 9284.29 -0.01 -80.24 -0.19
17 0.8192 9284.35 0.13 -80.00 0.04
18 0.8193 9283.41 -0.06 -80.08 -0.10
19 0.8246 9221.62 -0.12 -74.27 0.07
20 0.8247 9221.48 -0.07 -74.33 -0.01
21 0.8247 9221.34 0.07 -74.39 -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.
17BH241 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0