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: 16EF364 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 34.96d # First observation: 2016/03/07 # Last observation: 2016/04/11 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.029729 -0.000003 0.007928 0.027333 0.000000 # Chi-squared of fit: 6.18 DOF: 26 RMS: 0.11 # Min/Max residuals: -0.19 0.29 # Exact a, adot, b, bdot, g, gdot: 1.438975E-05 2.657834E-02 4.790369E-06 8.133187E-03 2.661814E-02 3.277959E-04 # Covariance matrix: 3.7366E-13 6.4514E-11 -8.2764E-14 -3.7105E-12 1.6565E-11 2.1522E-09 6.4514E-11 1.8834E-07 -1.5324E-10 -1.4417E-08 3.8509E-08 2.4191E-06 -8.2764E-14 -1.5324E-10 3.6806E-13 8.6107E-12 -3.2035E-11 -2.2874E-09 -3.7105E-12 -1.4417E-08 8.6107E-12 1.1748E-09 -2.9128E-09 -1.6883E-07 1.6565E-11 3.8509E-08 -3.2035E-11 -2.9128E-09 7.9452E-09 5.2666E-07 2.1522E-09 2.4191E-06 -2.2874E-09 -1.6883E-07 5.2666E-07 4.5730E-05 # lat0 lon0 xBary yBary zBary JD0 11.205483 -150.434202 0.668352 0.141886 -0.715482 2457455.091949 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 355.85367 +/- 210.092 Argument of Peri: 38.03707 +/- 238.002 Long of Asc Node: 176.85878 +/- 0.546 Inclination: 20.29009 +/- 0.287 Eccentricity: 0.06217019 +/- 0.0130 Semi-Major Axis: 40.82467331 +/- 1.0001 Time of Perihelion: 2458547.8479 +/- 55601.8 Perihelion: 38.28659579 +/- 1.0776 Aphelion: 43.36275082 +/- 1.1874 Period (y) 260.8509 +/- 9.59 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.02133191 +/- 0.1073 Ecliptic Y -17.96460467 +/- 0.0609 Ecliptic Z 7.30078854 +/- 0.0245 Ecliptic XDOT 0.00146139 +/- 0.0006 Ecliptic YDOT -0.00232088 +/- 0.0004 Ecliptic ZDOT 0.00082717 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 38.29408434 +/- 0.0970 Geocenter to KBO 37.56835919 +/- 0.1258 # Hcoef: 8.13
The following table shows the complete astrometric record for 16EF364. 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 (16EF364) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.59116 14 05 42.75 -00 48 56.9 25.1g 16EF364 T09 C~89T4 2016 03 07.59691 14 05 42.71 -00 48 56.6 25.3g 16EF364 T09 C~89T4 2016 03 07.62483 14 05 42.62 -00 48 55.6 25.1g 16EF364 T09 C~89T4 2016 03 07.64412 14 05 42.56 -00 48 54.9 24.9g 16EF364 T09 C~89T4 2016 03 16.48552 14 05 13.14 -00 43 39.7 23.7z 16EF364 T09 C~89T4 2016 03 16.51315 14 05 13.06 -00 43 38.7 23.2z 16EF364 T09 C~89T4 2016 03 16.53802 14 05 12.97 -00 43 37.9 23.2z 16EF364 T09 C~89T4 2016 03 16.56805 14 05 12.84 -00 43 36.7 23.4z 16EF364 T09 C~89T5 2016 04 08.53538 14 03 35.58 -00 29 49.3 24.0r 16EF364 T09 C~89T5 2016 04 08.54322 14 03 35.53 -00 29 49.2 23.9r 16EF364 T09 C~89T5 2016 04 11.43756 14 03 21.88 -00 28 09.1 23.5i 16EF364 T09 C~89T5 2016 04 11.45409 14 03 21.79 -00 28 08.4 23.2i 16EF364 T09 C~89T5 2016 04 11.47599 14 03 21.68 -00 28 07.6 23.4i 16EF364 T09 C~89T5 2016 04 11.50575 14 03 21.56 -00 28 06.6 23.6i 16EF364 T09 C~89T5 2016 04 11.52732 14 03 21.44 -00 28 05.9 23.4i 16EF364 T09 C~89T5 2016 04 11.54904 14 03 21.33 -00 28 05.2 23.6i 16EF364 T09 C~89T5
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 0.29 0.00 0.01
2 0.0000 -0.67 -0.06 0.07 -0.01
3 0.0001 -2.28 -0.12 0.55 -0.01
4 0.0001 -3.37 -0.13 0.89 0.01
5 0.0244 -526.44 -0.19 143.93 -0.05
6 0.0244 -527.91 0.13 144.45 0.07
7 0.0245 -529.45 0.20 144.74 -0.01
8 0.0246 -531.70 -0.09 145.19 0.01
9 0.0875 -2186.80 0.01 416.60 0.05
10 0.0875 -2187.53 -0.10 416.43 -0.18
11 0.0954 -2414.30 0.12 439.49 -0.07
12 0.0954 -2415.81 -0.07 439.67 0.01
13 0.0955 -2417.63 -0.14 439.85 0.04
14 0.0956 -2419.67 0.21 440.17 0.14
15 0.0956 -2421.60 0.00 440.20 0.03
16 0.0957 -2423.39 -0.05 440.29 -0.04
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.