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: 16EF367 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 11.11d # First observation: 2016/03/04 # Last observation: 2016/03/15 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.044548 0.000001 -0.008785 0.030372 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 21.15 DOF: 59 RMS: 0.14 # Min/Max residuals: -0.33 0.57 # Exact a, adot, b, bdot, g, gdot: 1.948141E-05 3.618300E-02 -4.331430E-06 -8.384428E-03 2.902688E-02 8.368879E-03 # Covariance matrix: 3.0740E-12 4.3409E-09 2.5642E-13 -2.1346E-10 7.1649E-10 -1.1135E-08 4.3409E-09 6.6739E-06 3.9296E-10 -3.2653E-07 1.0960E-06 -2.1781E-05 2.5642E-13 3.9296E-10 1.8454E-13 -2.6901E-11 6.4550E-11 -1.2689E-09 -2.1346E-10 -3.2653E-07 -2.6901E-11 1.6493E-08 -5.3649E-08 1.0394E-06 7.1649E-10 1.0960E-06 6.4550E-11 -5.3649E-08 1.8008E-07 -3.4884E-06 -1.1135E-08 -2.1781E-05 -1.2689E-09 1.0394E-06 -3.4884E-06 1.8953E-04 # lat0 lon0 xBary yBary zBary JD0 -8.775943 151.148184 -0.217997 -0.146967 -0.953057 2457451.926989 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 8.14279 +/- 10.654 Argument of Peri: 177.96373 +/- 50.089 Long of Asc Node: 298.86833 +/- 1.618 Inclination: 15.55191 +/- 0.660 Eccentricity: 0.57869636 +/- 0.2569 Semi-Major Axis: 78.26625729 +/- 33.3844 Time of Perihelion: 2451730.0375 +/- 6528.7 Perihelion: 32.97385917 +/- 24.5398 Aphelion: 123.55865540 +/- 56.4098 Period (y) 692.4207 +/- 443.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.77509181 +/- 0.4359 Ecliptic Y 16.70143265 +/- 0.2402 Ecliptic Z -5.25634174 +/- 0.0768 Ecliptic XDOT -0.00222462 +/- 0.0011 Ecliptic YDOT -0.00267795 +/- 0.0007 Ecliptic ZDOT -0.00090199 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 35.40724865 +/- 0.3957 Geocenter to KBO 34.45082958 +/- 0.5036 # Hcoef: 8.72
The following table shows the complete astrometric record for 16EF367. 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 (16EF367) followed by the observatory code and reference code for the source of the astrometry.
2016 03 04.42620 10 00 18.25 +02 50 59.2 23.9i 16EF367 T09 C~8AhO 2016 03 04.43733 10 00 18.19 +02 50 59.5 23.6i 16EF367 T09 C~8AhO 2016 03 04.45194 10 00 18.12 +02 50 59.9 23.8i 16EF367 T09 C~8AhO 2016 03 07.27865 10 00 03.84 +02 52 16.4 25.1g 16EF367 T09 C~8AhO 2016 03 07.28113 10 00 03.81 +02 52 16.6 25.1g 16EF367 T09 C~8AhO 2016 03 07.28866 10 00 03.77 +02 52 16.9 25.1g 16EF367 T09 C~8AhO 2016 03 07.29878 10 00 03.72 +02 52 17.1 25.4g 16EF367 T09 C~8AhO 2016 03 07.30953 10 00 03.67 +02 52 17.3 25.1g 16EF367 T09 C~8AhO 2016 03 07.31343 10 00 03.66 +02 52 17.3 25.2g 16EF367 T09 C~8AhO 2016 03 07.32114 10 00 03.61 +02 52 17.6 25.1g 16EF367 T09 C~8AhO 2016 03 07.32499 10 00 03.60 +02 52 17.8 24.9g 16EF367 T09 C~8AhO 2016 03 07.32886 10 00 03.58 +02 52 17.8 24.8g 16EF367 T09 C~8AhO 2016 03 09.153116 09 59 54.499 +02 53 08.05 23.8r 16EF367 W84 C~8HEL 2016 03 09.166380 09 59 54.427 +02 53 08.34 23.7i 16EF367 W84 C~8HEL 2016 03 09.200558 09 59 54.276 +02 53 09.13 23.8r 16EF367 W84 C~8HEL 2016 03 09.29953 09 59 53.79 +02 53 11.5 24.3r 16EF367 T09 C~8AhO 2016 03 09.30973 09 59 53.73 +02 53 12.0 24.5r 16EF367 T09 C~8AhO 2016 03 09.33622 09 59 53.61 +02 53 12.7 24.7r 16EF367 T09 C~8AhO 2016 03 09.34016 09 59 53.60 +02 53 12.8 24.5r 16EF367 T09 C~8AhO 2016 03 12.39109 09 59 38.76 +02 54 36.3 23.6z 16EF367 T09 C~8AhO 2016 03 12.42050 09 59 38.62 +02 54 37.0 23.6z 16EF367 T09 C~8AhO 2016 03 12.44690 09 59 38.49 +02 54 37.8 23.7z 16EF367 T09 C~8AhO 2016 03 12.45077 09 59 38.47 +02 54 37.8 23.6z 16EF367 T09 C~8AhO 2016 03 12.45461 09 59 38.45 +02 54 38.0 23.6z 16EF367 T09 C~8AhO 2016 03 12.46234 09 59 38.43 +02 54 38.1 24.2z 16EF367 T09 C~8AhO 2016 03 12.47390 09 59 38.36 +02 54 38.5 23.8z 16EF367 T09 C~8AhO 2016 03 15.49118 09 59 24.17 +02 56 00.9 23.8y 16EF367 T09 C~8AhO 2016 03 15.49888 09 59 24.13 +02 56 01.4 23.4y 16EF367 T09 C~8AhO 2016 03 15.50274 09 59 24.12 +02 56 01.2 23.1y 16EF367 T09 C~8AhO 2016 03 15.50659 09 59 24.12 +02 56 00.9 23.3y 16EF367 T09 C~8AhO 2016 03 15.51045 09 59 24.06 +02 56 01.7 23.7y 16EF367 T09 C~8AhO 2016 03 15.53155 09 59 23.95 +02 56 02.0 23.7y 16EF367 T09 C~8AhO
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 0.05 0.00 -0.05
2 0.0000 -0.95 0.02 -0.03 -0.06
3 0.0001 -2.07 0.10 -0.02 -0.02
4 0.0078 -229.25 0.17 -2.95 -0.06
5 0.0078 -229.74 -0.12 -2.92 -0.03
6 0.0078 -230.41 -0.18 -2.85 0.05
7 0.0079 -231.18 -0.13 -2.92 -0.01
8 0.0079 -231.95 -0.03 -2.99 -0.07
9 0.0079 -232.09 0.14 -3.05 -0.12
10 0.0079 -232.90 -0.04 -3.03 -0.09
11 0.0079 -233.11 0.06 -2.89 0.05
12 0.0079 -233.39 0.10 -3.00 -0.05
13 0.0129 -378.42 -0.14 -3.35 0.19
14 0.0130 -379.53 -0.19 -3.45 0.09
15 0.0131 -381.92 0.15 -3.50 0.07
16 0.0133 -389.57 0.03 -3.82 -0.10
17 0.0134 -390.59 -0.17 -3.66 0.06
18 0.0134 -392.52 0.02 -3.64 0.10
19 0.0135 -392.69 0.16 -3.59 0.15
20 0.0218 -630.17 -0.11 -2.86 0.09
21 0.0219 -632.38 -0.02 -2.94 0.01
22 0.0220 -634.49 -0.07 -2.87 0.07
23 0.0220 -634.77 -0.05 -2.97 -0.03
24 0.0220 -635.12 -0.10 -2.89 0.05
25 0.0220 -635.44 0.19 -2.90 0.04
26 0.0220 -636.56 -0.04 -2.89 0.05
27 0.0303 -864.52 0.11 0.22 -0.05
28 0.0303 -865.26 -0.05 0.48 0.20
29 0.0303 -865.33 0.17 0.24 -0.05
30 0.0303 -865.23 0.57 -0.04 -0.33
31 0.0303 -866.35 -0.26 0.40 0.10
32 0.0304 -868.00 -0.32 0.10 -0.22
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.