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: 16GY367 # Created Sun Dec 22 02:10:41 2024 # Orbit generated from Bernstein formalism # Fitting 20 observations of 20 # Arc: 0.93y # First observation: 2016/04/02 # Last observation: 2017/03/06 Preliminary a, adot, b, bdot, g, gdot: -0.000008 0.029369 0.000007 -0.005341 0.026817 0.000000 # Chi-squared of fit: 13.93 DOF: 34 RMS: 0.15 # Min/Max residuals: -0.41 0.26 # Exact a, adot, b, bdot, g, gdot: 1.645447E-05 2.889008E-02 -3.133454E-06 -5.275863E-03 2.700217E-02 -9.557660E-04 # Covariance matrix: 2.9688E-13 2.2764E-13 2.3694E-15 -9.0468E-14 2.1335E-13 1.6963E-11 2.2764E-13 1.2041E-10 4.2024E-13 -1.9741E-11 5.7709E-11 3.8232E-09 2.3694E-15 4.2024E-13 2.9048E-13 -4.0865E-13 1.9795E-13 1.3320E-11 -9.0468E-14 -1.9741E-11 -4.0865E-13 3.7865E-12 -9.5375E-12 -6.3026E-10 2.1335E-13 5.7709E-11 1.9795E-13 -9.5375E-12 2.8466E-11 1.8535E-09 1.6963E-11 3.8232E-09 1.3320E-11 -6.3026E-10 1.8535E-09 1.2218E-07 # lat0 lon0 xBary yBary zBary JD0 -13.542559 145.462348 -0.731157 -0.158093 -0.656977 2457480.831819 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 354.45989 +/- 4.221 Argument of Peri: 240.85775 +/- 5.627 Long of Asc Node: 274.27960 +/- 0.014 Inclination: 16.62630 +/- 0.003 Eccentricity: 0.13619234 +/- 0.0020 Semi-Major Axis: 43.60146656 +/- 0.0453 Time of Perihelion: 2459098.8250 +/- 1232.9 Perihelion: 37.66328096 +/- 0.0969 Aphelion: 49.53965217 +/- 0.1025 Period (y) 287.9121 +/- 0.45 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.63400028 +/- 0.0059 Ecliptic Y 20.19084729 +/- 0.0040 Ecliptic Z -8.67227231 +/- 0.0017 Ecliptic XDOT -0.00147984 +/- 0.0000 Ecliptic YDOT -0.00254441 +/- 0.0000 Ecliptic ZDOT -0.00049737 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.70040576 +/- 0.0052 Geocenter to KBO 37.03406407 +/- 0.0073 # Hcoef: 9.48
The following table shows the complete astrometric record for 16GY367. 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 (16GY367) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.331030 09 32 50.91 +00 15 08.4 16GY367 T09 C~89Tb 2016 04 04.244078 09 32 45.62 +00 16 03.3 16GY367 T09 C~89Tb 2016 04 04.25331 09 32 45.58 +00 16 03.5 25.5g 16GY367 T09 C~8COT 2016 04 04.25541 09 32 45.58 +00 16 03.7 25.2g 16GY367 T09 C~8COT 2016 04 04.265999 09 32 45.56 +00 16 03.9 16GY367 T09 C~89Tb 2016 12 25.449137 09 45 57.01 -01 05 29.6 16GY367 T09 C~89Tb 2016 12 25.46448 09 45 56.94 -01 05 30.0 25.7r 16GY367 T09 C~8COT 2016 12 25.47707 09 45 56.89 -01 05 29.7 26.5r 16GY367 T09 C~8COT 2016 12 25.491694 09 45 56.87 -01 05 29.9 16GY367 T09 C~89Tb 2017 01 28.41954 09 43 37.18 -01 02 58.4 25.3g 16GY367 T09 C~8COT 2017 01 28.438146 09 43 37.10 -01 02 58.1 16GY367 T09 C~89Tb 2017 01 28.452912 09 43 37.02 -01 02 57.9 16GY367 T09 C~89Tb 2017 01 28.46760 09 43 36.91 -01 02 57.4 26.0g 16GY367 T09 C~8COT 2017 03 04.39457 09 40 39.44 -00 49 26.4 24.8i 16GY367 T09 C~89Tb 2017 03 04.39993 09 40 39.43 -00 49 26.3 25.1i 16GY367 T09 C~89Tb 2017 03 04.40261 09 40 39.42 -00 49 26.1 24.8i 16GY367 T09 C~89Tb 2017 03 04.41889 09 40 39.34 -00 49 25.6 24.5i 16GY367 T09 C~89Tb 2017 03 04.42965 09 40 39.29 -00 49 25.8 24.9i 16GY367 T09 C~89Tb 2017 03 04.43238 09 40 39.28 -00 49 25.3 24.8i 16GY367 T09 C~89Tb 2017 03 06.416212 09 40 29.86 -00 48 27.3 16GY367 T09 C~89Tb
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 0.01
2 0.0052 -92.96 0.05 25.87 0.03
3 0.0053 -93.59 -0.13 25.86 -0.10
4 0.0053 -93.66 -0.09 26.05 0.06
5 0.0053 -94.00 0.07 26.14 0.01
6 0.7313 12741.38 0.22 -709.47 0.10
7 0.7314 12740.52 -0.02 -710.20 -0.29
8 0.7314 12739.71 -0.32 -710.16 0.01
9 0.7314 12739.49 0.06 -710.45 0.04
10 0.8243 10703.80 0.06 -1253.64 -0.04
11 0.8244 10702.57 0.26 -1253.75 0.05
12 0.8244 10701.37 0.19 -1253.96 0.00
13 0.8245 10699.64 -0.41 -1254.02 0.09
14 0.9201 7913.38 -0.27 -1359.00 -0.01
15 0.9201 7913.21 -0.02 -1358.96 0.02
16 0.9201 7913.00 -0.02 -1358.82 0.15
17 0.9202 7911.70 -0.04 -1358.74 0.17
18 0.9202 7911.06 0.17 -1359.17 -0.31
19 0.9202 7910.75 0.08 -1358.75 0.11
20 0.9256 7758.04 0.05 -1350.19 -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.
16GY367 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.364 43.458 43.337 ecceobj 0.130 0.135 0.130 incobj 16.606 16.616 16.603 qmin 37.081 36.811 37.078 qmax 49.855 50.349 49.904 amean 43.346 43.423 43.332 amin 43.000 43.069 42.984 amax 43.727 43.812 43.725 emean 0.128 0.134 0.127 emin 0.115 0.119 0.112 emax 0.142 0.150 0.142 imean 18.347 18.306 18.370 imin 17.834 17.761 17.874 imax 18.824 18.823 18.873 excite_mean 0.340 0.342 0.340 fracstop 1.000 1.000 1.000 cjmean 2.953 2.952 2.953 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 181.2 189.1 187.5 kozaiamp 180.0 180.0 180.0