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: 16YY39 # Created Wed May 8 01:18:04 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 70.94d # First observation: 2016/12/25 # Last observation: 2017/03/06 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.037130 0.000003 -0.000797 0.034346 0.000000 # Chi-squared of fit: 9.49 DOF: 26 RMS: 0.14 # Min/Max residuals: -0.32 0.34 # Exact a, adot, b, bdot, g, gdot: 1.640091E-05 3.633353E-02 -5.226309E-07 -8.136743E-04 3.388289E-02 1.164508E-02 # Covariance matrix: 4.8319E-13 -6.1085E-12 1.1757E-14 -4.8992E-13 2.4723E-13 1.6852E-10 -6.1085E-12 4.5391E-09 2.7612E-11 3.1717E-10 9.8638E-10 3.5877E-08 1.1757E-14 2.7612E-11 4.8883E-13 -2.2624E-13 6.2685E-12 2.6245E-10 -4.8992E-13 3.1717E-10 -2.2624E-13 4.2735E-11 6.7831E-11 2.2671E-09 2.4723E-13 9.8638E-10 6.2685E-12 6.7831E-11 2.2278E-10 9.1688E-09 1.6852E-10 3.5877E-08 2.6245E-10 2.2671E-09 9.1688E-09 5.2433E-07 # lat0 lon0 xBary yBary zBary JD0 -13.495934 150.280460 0.824458 -0.126538 -0.528081 2457747.965269 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 80.79137 +/- 3.485 Argument of Peri: 150.13550 +/- 1.893 Long of Asc Node: 246.22872 +/- 0.045 Inclination: 13.36068 +/- 0.001 Eccentricity: 0.27871740 +/- 0.0155 Semi-Major Axis: 29.10757138 +/- 0.3417 Time of Perihelion: 2444867.7940 +/- 507.0 Perihelion: 20.99478484 +/- 0.5145 Aphelion: 37.22035793 +/- 0.6284 Period (y) 157.0425 +/- 2.77 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -24.99004142 +/- 0.0110 Ecliptic Y 15.20830397 +/- 0.0063 Ecliptic Z -6.88779205 +/- 0.0030 Ecliptic XDOT -0.00223421 +/- 0.0001 Ecliptic YDOT -0.00211041 +/- 0.0000 Ecliptic ZDOT -0.00028358 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.05389091 +/- 0.0097 Geocenter to KBO 29.51342368 +/- 0.0130 # Hcoef: 9.97
The following table shows the complete astrometric record for 16YY39. 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 (16YY39) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.46448 09 50 33.36 -01 16 53.3 24.9r 16YY39 T09 C~7xTe 2016 12 25.48961 09 50 33.25 -01 16 53.3 25.2r 16YY39 T09 C~7xTe 2016 12 25.49379 09 50 33.25 -01 16 53.6 25.1r 16YY39 T09 C~7xTe 2017 01 26.45718 09 47 54.69 -01 12 59.7 24.3z 16YY39 T09 C~7xTe 2017 01 26.47468 09 47 54.59 -01 12 59.7 24.5z 16YY39 T09 C~7xTe 2017 01 26.49073 09 47 54.49 -01 12 59.2 24.0z 16YY39 T09 C~7xTe 2017 01 26.49344 09 47 54.48 -01 12 59.5 24.5z 16YY39 T09 C~7xTe 2017 01 28.42233 09 47 42.72 -01 12 18.6 25.6g 16YY39 T09 C~7xTe 2017 01 28.44025 09 47 42.60 -01 12 18.4 25.4g 16YY39 T09 C~7xTe 2017 01 28.45292 09 47 42.52 -01 12 17.9 25.5g 16YY39 T09 C~7xTe 2017 01 28.46551 09 47 42.45 -01 12 17.4 25.0g 16YY39 T09 C~7xTe 2017 03 04.39457 09 44 01.57 -00 53 42.1 24.3i 16YY39 T09 C~7xTe 2017 03 04.39725 09 44 01.55 -00 53 42.1 24.0i 16YY39 T09 C~7xTe 2017 03 04.43505 09 44 01.33 -00 53 40.4 24.4i 16YY39 T09 C~7xTe 2017 03 06.38592 09 43 49.76 -00 52 23.4 24.7i 16YY39 T09 C~7xTe 2017 03 06.39997 09 43 49.67 -00 52 22.5 24.3i 16YY39 T09 C~7xTe
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 0.11 0.00 0.03
2 0.0001 -1.55 -0.21 -0.57 0.08
3 0.0001 -1.44 0.10 -0.85 -0.10
4 0.0876 -2313.66 -0.23 -603.32 0.11
5 0.0876 -2315.07 0.00 -603.84 -0.18
6 0.0877 -2316.65 -0.07 -603.89 -0.02
7 0.0877 -2316.69 0.15 -604.22 -0.32
8 0.0930 -2496.34 0.11 -626.83 0.10
9 0.0930 -2498.09 0.06 -627.27 -0.12
10 0.0931 -2499.39 -0.03 -627.21 0.09
11 0.0931 -2500.55 0.02 -627.11 0.34
12 0.1887 -5996.07 -0.06 -726.74 0.02
13 0.1887 -5996.36 -0.07 -726.84 -0.10
14 0.1888 -6000.04 0.00 -726.39 0.16
15 0.1942 -6189.66 0.16 -714.20 -0.19
16 0.1942 -6191.24 -0.04 -713.83 0.10
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.
16YY39 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 29.183 30.459 28.122 ecceobj 0.285 0.312 0.266 incobj 13.338 13.335 13.341 qmin 20.169 20.336 20.054 qmax 37.814 41.264 39.291 amean 28.222 30.306 28.691 amin 26.494 29.475 27.327 amax 29.301 31.347 29.792 emean 0.266 0.299 0.285 emin 0.214 0.247 0.259 emax 0.292 0.331 0.319 imean 14.316 14.875 14.289 imin 13.924 13.968 13.560 imax 14.625 17.170 15.422 excite_mean 0.364 0.395 0.377 fracstop 0.010 0.024 0.020 cjmean 2.880 2.848 2.867 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 182.9 220.7 199.0 kozaiamp 38.4 51.5 51.7