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: 17BA233 # Created Fri Nov 22 02:10:48 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 2.03y # First observation: 2015/03/22 # Last observation: 2017/04/02 Preliminary a, adot, b, bdot, g, gdot: -0.000021 0.031794 0.000000 0.001706 0.028123 0.000000 # Chi-squared of fit: 10.45 DOF: 54 RMS: 0.10 # Min/Max residuals: -0.17 0.30 # Exact a, adot, b, bdot, g, gdot: 1.811797E-05 3.162467E-02 9.111804E-07 1.700792E-03 2.787390E-02 -1.797154E-03 # Covariance matrix: 7.2193E-13 -9.5603E-13 8.2271E-15 -3.3418E-14 -4.2140E-13 -9.2395E-12 -9.5603E-13 1.8998E-12 -2.2588E-14 7.9025E-14 8.2861E-13 2.1719E-11 8.2271E-15 -2.2588E-14 3.9414E-13 -2.2500E-13 -6.6809E-15 -2.7025E-13 -3.3418E-14 7.9025E-14 -2.2500E-13 1.4885E-13 3.8812E-14 9.8174E-13 -4.2140E-13 8.2861E-13 -6.6809E-15 3.8812E-14 6.4339E-13 1.0850E-11 -9.2395E-12 2.1719E-11 -2.7025E-13 9.8174E-13 1.0850E-11 2.7025E-10 # lat0 lon0 xBary yBary zBary JD0 -13.363733 142.562995 -0.620734 -0.179091 -0.754434 2457103.880760 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 351.62093 +/- 0.105 Argument of Peri: 297.04679 +/- 0.166 Long of Asc Node: 219.22958 +/- 0.003 Inclination: 13.48558 +/- 0.000 Eccentricity: 0.21074466 +/- 0.0002 Semi-Major Axis: 46.21176414 +/- 0.0065 Time of Perihelion: 2459771.1735 +/- 33.4 Perihelion: 36.47288181 +/- 0.0092 Aphelion: 55.95064647 +/- 0.0109 Period (y) 314.1500 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.71144791 +/- 0.0008 Ecliptic Y 21.19638886 +/- 0.0006 Ecliptic Z -8.29201824 +/- 0.0002 Ecliptic XDOT -0.00178594 +/- 0.0000 Ecliptic YDOT -0.00255317 +/- 0.0000 Ecliptic ZDOT 0.00020342 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.63866411 +/- 0.0007 Geocenter to KBO 35.87585764 +/- 0.0010 # Hcoef: 8.29
The following table shows the complete astrometric record for 17BA233. 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 (17BA233) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.379982 09 22 23.92 +01 19 45.2 17BA233 T09 C~83Eq 2015 03 22.456321 09 22 23.65 +01 19 47.8 17BA233 T09 C~83Eq 2016 02 12.36483 09 32 23.39 +00 30 24.8 23.6y 17BA233 T09 C~8COq 2016 02 12.40003 09 32 23.20 +00 30 25.6 23.4y 17BA233 T09 C~8COq 2016 02 12.43284 09 32 23.02 +00 30 26.6 23.3y 17BA233 T09 C~8COq 2016 02 12.47965 09 32 22.77 +00 30 28.0 23.5y 17BA233 T09 C~8COq 2016 02 12.51446 09 32 22.58 +00 30 28.8 23.5y 17BA233 T09 C~8COq 2016 04 04.246919 09 28 43.20 +00 58 19.1 17BA233 T09 C~83Eq 2016 04 04.278695 09 28 43.12 +00 58 20.1 17BA233 T09 C~83Eq 2016 12 25.47915 09 43 01.24 -00 09 41.5 24.3r 17BA233 T09 C~7xTq 2016 12 25.49589 09 43 01.18 -00 09 41.5 24.2r 17BA233 T09 C~7xTq 2016 12 25.50217 09 43 01.17 -00 09 41.7 24.2r 17BA233 T09 C~7xTq 2017 01 21.36859 09 41 15.19 -00 06 33.6 23.5z 17BA233 T09 C~7xTq 2017 01 21.37737 09 41 15.16 -00 06 33.1 23.7z 17BA233 T09 C~7xTq 2017 01 21.40956 09 41 14.99 -00 06 32.6 23.7z 17BA233 T09 C~7xTq 2017 01 21.62179 09 41 13.96 -00 06 29.2 23.5z 17BA233 T09 C~7xTq 2017 01 21.63253 09 41 13.92 -00 06 29.4 23.4z 17BA233 T09 C~7xTq 2017 01 21.64327 09 41 13.87 -00 06 29.1 23.7z 17BA233 T09 C~7xTq 2017 01 28.38578 09 40 40.98 -00 04 28.1 24.6g 17BA233 T09 C~7xTq 2017 01 28.39557 09 40 40.92 -00 04 27.8 24.6g 17BA233 T09 C~7xTq 2017 01 28.41254 09 40 40.83 -00 04 27.6 24.3g 17BA233 T09 C~7xTq 2017 01 28.45502 09 40 40.62 -00 04 26.8 25.3g 17BA233 T09 C~7xTq 2017 03 04.38848 09 37 42.99 +00 11 41.3 23.8i 17BA233 T09 C~7xTq 2017 03 04.39116 09 37 42.98 +00 11 41.3 23.8i 17BA233 T09 C~7xTq 2017 03 04.42430 09 37 42.80 +00 11 42.5 23.5i 17BA233 T09 C~7xTq 2017 03 04.42698 09 37 42.80 +00 11 42.6 23.6i 17BA233 T09 C~7xTq 2017 04 02.024053 09 35 50.568 +00 27 58.68 24.0g 17BA233 W84 C~8HK0 2017 04 02.033707 09 35 50.537 +00 27 58.93 23.9r 17BA233 W84 C~8HK0 2017 04 02.036923 09 35 50.534 +00 27 58.93 23.7r 17BA233 W84 C~8HK0 2017 04 02.040141 09 35 50.520 +00 27 58.97 23.7r 17BA233 W84 C~8HK0
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 -0.04 0.00 0.01
2 0.0002 -4.66 0.01 1.19 0.08
3 0.8952 9472.25 0.07 35.51 0.02
4 0.8953 9469.28 0.07 35.36 -0.14
5 0.8954 9466.40 -0.05 35.46 -0.06
6 0.8956 9462.39 -0.12 35.60 0.06
7 0.8956 9459.43 -0.15 35.46 -0.10
8 1.0373 5804.41 0.09 578.63 -0.02
9 1.0374 5802.96 0.14 579.20 -0.02
10 1.7634 19359.44 0.10 786.20 -0.00
11 1.7635 19358.58 -0.04 785.91 -0.01
12 1.7635 19358.50 0.15 785.67 -0.14
13 1.8371 17778.32 0.05 458.97 -0.10
14 1.8371 17777.73 0.11 459.30 0.30
15 1.8372 17775.14 -0.10 458.97 0.22
16 1.8378 17759.29 -0.17 457.29 0.24
17 1.8378 17758.78 0.11 456.91 -0.06
18 1.8378 17757.97 0.10 456.96 0.07
19 1.8563 17248.04 0.05 415.26 0.06
20 1.8563 17247.09 -0.13 415.26 0.11
21 1.8564 17245.74 -0.14 415.02 -0.04
22 1.8565 17242.47 -0.04 414.78 -0.05
23 1.9521 14391.86 0.06 488.99 -0.03
24 1.9521 14391.72 0.13 488.94 -0.10
25 1.9522 14388.77 -0.17 489.22 -0.10
26 1.9522 14388.73 0.01 489.32 -0.03
27 2.0305 12474.71 -0.07 882.46 0.07
28 2.0305 12474.19 -0.08 882.55 -0.01
29 2.0305 12474.15 0.05 882.53 -0.08
30 2.0306 12473.93 0.01 882.50 -0.17
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.
17BA233 quality flag:2 Type: SCATEXTD SCATEXTD SCATNEAR axisobj 45.905 45.935 45.874 ecceobj 0.204 0.204 0.203 incobj 13.481 13.481 13.481 qmin 35.852 35.878 35.869 qmax 56.262 56.449 56.073 amean 45.861 45.896 45.821 amin 45.463 45.499 45.341 amax 46.319 46.395 46.319 emean 0.199 0.200 0.197 emin 0.184 0.185 0.181 emax 0.215 0.218 0.213 imean 14.643 14.640 14.668 imin 13.977 13.970 14.011 imax 15.333 15.319 15.402 excite_mean 0.322 0.322 0.321 fracstop 1.000 1.000 1.000 cjmean 2.996 2.996 2.997 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 177.9 179.0 175.6 kozaiamp 180.0 180.0 180.0