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: 16CY430 # Created Sun Feb 23 02:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 37.88d # First observation: 2016/02/03 # Last observation: 2016/03/12 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.027905 0.000002 0.004348 0.024595 0.000000 # Chi-squared of fit: 7.85 DOF: 32 RMS: 0.11 # Min/Max residuals: -0.30 0.24 # Exact a, adot, b, bdot, g, gdot: 1.454272E-05 2.266955E-02 3.208701E-06 4.538630E-03 2.378508E-02 -4.703410E-03 # Covariance matrix: 3.3345E-13 1.8069E-10 5.7992E-14 -6.4039E-12 2.9208E-11 -2.8160E-10 1.8069E-10 3.5714E-07 1.1644E-10 -1.3283E-08 5.3978E-08 -2.1112E-06 5.7992E-14 1.1644E-10 2.2026E-13 -6.4195E-12 1.7557E-11 -7.1067E-10 -6.4039E-12 -1.3283E-08 -6.4195E-12 5.3797E-10 -1.9970E-09 8.3998E-08 2.9208E-11 5.3978E-08 1.7557E-11 -1.9970E-09 8.2025E-09 -2.9720E-07 -2.8160E-10 -2.1112E-06 -7.1067E-10 8.3998E-08 -2.9720E-07 2.3550E-05 # lat0 lon0 xBary yBary zBary JD0 -10.602250 140.778157 0.122871 -0.179491 -0.959890 2457421.970349 # Heliocentric elements and errors Epoch: 2457420.5000 = 2016/02/02 Mean Anomaly: 302.37715 +/- 16.497 Argument of Peri: 38.28413 +/- 7.613 Long of Asc Node: 182.59033 +/- 0.789 Inclination: 15.29170 +/- 0.225 Eccentricity: 0.21571143 +/- 0.2206 Semi-Major Axis: 46.57828871 +/- 5.9642 Time of Perihelion: 2476005.6449 +/- 3945.6 Perihelion: 36.53081940 +/- 11.2898 Aphelion: 56.62575803 +/- 12.5759 Period (y) 317.8949 +/- 61.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.69793038 +/- 0.1219 Ecliptic Y 26.84165697 +/- 0.0995 Ecliptic Z -7.73540868 +/- 0.0295 Ecliptic XDOT -0.00131270 +/- 0.0004 Ecliptic YDOT -0.00230423 +/- 0.0004 Ecliptic ZDOT 0.00061314 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 43.00541533 +/- 0.1117 Geocenter to KBO 42.04316752 +/- 0.1601 # Hcoef: 7.48
The following table shows the complete astrometric record for 16CY430. 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 (16CY430) followed by the observatory code and reference code for the source of the astrometry.
2016 02 03.46956 09 19 12.73 +04 29 52.5 23.2y 16CY430 T09 C~8eUf 2016 02 03.51398 09 19 12.52 +04 29 53.8 23.5y 16CY430 T09 C~8eUf 2016 02 03.53584 09 19 12.42 +04 29 54.1 23.3y 16CY430 T09 C~8eUf 2016 02 03.57940 09 19 12.21 +04 29 55.0 22.8y 16CY430 T09 C~8eUf 2016 02 03.58209 09 19 12.19 +04 29 55.1 23.1y 16CY430 T09 C~8eUf 2016 02 08.47270 09 18 49.78 +04 31 50.2 24.3r 16CY430 T09 C~8eUf 2016 02 08.47482 09 18 49.77 +04 31 50.3 24.1r 16CY430 T09 C~8eUf 2016 02 08.50402 09 18 49.66 +04 31 51.2 23.9r 16CY430 T09 C~8eUf 2016 02 08.51504 09 18 49.60 +04 31 51.3 23.8r 16CY430 T09 C~8eUf 2016 03 04.34717 09 17 00.97 +04 42 55.4 23.4i 16CY430 T09 C~8eUf 2016 03 04.35871 09 17 00.96 +04 42 55.7 23.5i 16CY430 T09 C~8eUf 2016 03 04.37528 09 17 00.88 +04 42 56.4 23.2i 16CY430 T09 C~8eUf 2016 03 07.35667 09 16 49.18 +04 44 20.7 24.5g 16CY430 T09 C~8eUf 2016 03 07.37512 09 16 49.10 +04 44 21.3 24.6g 16CY430 T09 C~8eUf 2016 03 07.37729 09 16 49.10 +04 44 21.3 24.7g 16CY430 T09 C~8eUf 2016 03 07.40643 09 16 48.98 +04 44 22.1 24.6g 16CY430 T09 C~8eUf 2016 03 12.31203 09 16 30.70 +04 46 41.2 23.4z 16CY430 T09 C~8eUf 2016 03 12.32378 09 16 30.66 +04 46 41.6 23.3z 16CY430 T09 C~8eUf 2016 03 12.35418 09 16 30.54 +04 46 42.3 23.6z 16CY430 T09 C~8eUf
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 -0.04
2 0.0001 -3.39 -0.03 0.27 0.22
3 0.0002 -4.90 0.06 0.09 0.04
4 0.0003 -8.17 -0.03 -0.03 -0.08
5 0.0003 -8.48 -0.15 -0.02 -0.08
6 0.0137 -362.76 -0.11 5.88 -0.16
7 0.0137 -362.93 -0.13 5.93 -0.11
8 0.0138 -364.77 0.18 6.27 0.19
9 0.0138 -365.66 0.11 6.09 -0.01
10 0.0818 -2115.56 -0.30 136.42 -0.16
11 0.0818 -2115.79 0.24 136.66 -0.01
12 0.0819 -2117.15 -0.01 136.95 0.15
13 0.0900 -2309.55 0.06 163.22 0.03
14 0.0901 -2310.87 -0.07 163.42 0.07
15 0.0901 -2310.87 0.07 163.42 0.05
16 0.0902 -2312.82 0.00 163.63 -0.00
17 0.1036 -2615.69 0.00 211.73 -0.02
18 0.1036 -2616.38 0.03 211.92 0.06
19 0.1037 -2618.31 -0.04 212.04 -0.13
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.
16CY430 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0