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: 16FD60 # Created Fri Apr 26 01:17:52 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 22 observations of 22 # Arc: 19.99y # First observation: 2001/03/20 # Last observation: 2021/03/17 # Chi-squared of fit: 38.50 DOF: 38 RMS: 0.23 # Min/Max residuals: -0.59 0.58 # Exact a, adot, b, bdot, g, gdot: 1.568866E-05 2.673205E-02 2.940513E-06 5.515648E-03 2.587932E-02 3.893655E-03 # Covariance matrix: 4.7908E-13 -6.2351E-14 1.0378E-14 -6.9341E-15 -7.6788E-14 -7.5170E-14 -6.2351E-14 2.6462E-14 -6.9933E-15 4.9997E-15 8.0588E-15 5.4204E-14 1.0378E-14 -6.9933E-15 4.2433E-13 -2.9496E-14 -6.1809E-15 -1.5543E-14 -6.9341E-15 4.9997E-15 -2.9496E-14 3.2417E-15 6.0607E-16 1.1197E-14 -7.6788E-14 8.0588E-15 -6.1809E-15 6.0607E-16 5.1634E-13 6.5335E-15 -7.5170E-14 5.4204E-14 -1.5543E-14 1.1197E-14 6.5335E-15 1.2140E-13 # lat0 lon0 xBary yBary zBary JD0 -11.066385 160.013314 -0.340712 -0.180601 -0.922587 2451988.705676 # Heliocentric elements and errors Epoch: 2451988.5000 = 2001/03/20 Mean Anomaly: 38.84389 +/- 0.014 Argument of Peri: 259.92489 +/- 0.019 Long of Asc Node: 202.49870 +/- 0.000 Inclination: 15.92187 +/- 0.000 Eccentricity: 0.20567220 +/- 0.0001 Semi-Major Axis: 45.94249048 +/- 0.0063 Time of Perihelion: 2439715.7912 +/- 5.1 Perihelion: 36.49339761 +/- 0.0058 Aphelion: 55.39158336 +/- 0.0081 Period (y) 311.4082 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.63456755 +/- 0.0010 Ecliptic Y 12.96770327 +/- 0.0004 Ecliptic Z -7.41684644 +/- 0.0002 Ecliptic XDOT -0.00146015 +/- 0.0000 Ecliptic YDOT -0.00247833 +/- 0.0000 Ecliptic ZDOT 0.00049379 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.56329877 +/- 0.0009 Geocenter to KBO 38.64083628 +/- 0.0011 # Hcoef: 7.07
The following table shows the complete astrometric record for 16FD60. 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 (16FD60) followed by the observatory code and reference code for the source of the astrometry.
2001 03 20.204933 10 29 33.43 -02 26 44.9 23.2r 16FD60 645 C~5z86 2001 03 20.205762 10 29 33.41 -02 26 44.9 22.6i 16FD60 645 C~5z86 2001 03 20.208250 10 29 33.40 -02 26 45.0 23.7g 16FD60 645 C~5z86 2008 01 05.567912 11 16 08.66 -04 43 46.5 22.9i 16FD60 T14 C~5z86 2014 03 28.06150 11 45 07.30 -05 38 09.3 23.9V 16FD60 W84 C~5z86 2014 03 28.12977 11 45 07.00 -05 38 07.0 16FD60 W84 C~5z86 2014 03 28.19693 11 45 06.71 -05 38 04.7 16FD60 W84 C~5z86 2015 12 27.328936 12 00 26.06 -06 28 44.8 22.5z 16FD60 W84 C~5z86 2016 03 03.341969 11 57 54.64 -06 16 23.7 23.0i 16FD60 W84 C~5z86 2016 03 03.342991 11 57 54.64 -06 16 23.8 22.6i 16FD60 W84 C~5z86 2016 03 30.18968 11 55 57.52 -06 02 28.8 24.4V 16FD60 W84 C~1qoK 2016 03 30.19662 11 55 57.51 -06 02 28.8 16FD60 W84 C~1qoK 2016 03 30.20356 11 55 57.50 -06 02 28.8 16FD60 W84 C~1qoK 2016 03 31.15051 11 55 53.39 -06 01 57.0 16FD60 W84 C~1qoK 2016 03 31.15745 11 55 53.38 -06 01 56.9 16FD60 W84 C~1qoK 2016 03 31.16439 11 55 53.38 -06 01 56.7 16FD60 W84 C~1qoK 2016 04 01.16488 11 55 49.02 -06 01 23.3 16FD60 W84 C~1qoK 2016 04 01.17182 11 55 49.02 -06 01 23.3 16FD60 W84 C~1qoK 2016 04 01.17876 11 55 49.01 -06 01 23.3 16FD60 W84 C~1qoK 2016 04 09.157352 11 55 15.56 -05 56 58.3 16FD60 W84 C~5z86 2018 03 14.341781 12 07 59.91 -06 35 41.6 23.2r 16FD60 W84 C~5z86 2021 03 17.255768 12 23 39.85 -07 08 13.2 22.6i 16FD60 W84 C~5z86
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 0.16 0.00 0.03
2 0.0000 0.00 -0.09 0.00 0.00
3 0.0000 0.00 -0.08 0.00 -0.18
4 6.7963 0.00 0.05 0.00 0.16
5 13.0208 0.00 -0.18 0.00 0.06
6 13.0210 0.00 -0.15 0.00 0.08
7 13.0212 0.00 -0.03 0.00 0.13
8 14.7710 0.00 -0.29 0.00 -0.59
9 14.9545 0.00 0.05 0.00 0.12
10 14.9545 0.00 0.11 0.00 -0.01
11 15.0280 0.00 -0.36 0.00 0.28
12 15.0280 0.00 -0.06 0.00 0.05
13 15.0281 0.00 0.25 0.00 -0.18
14 15.0307 0.00 -0.18 0.00 0.23
15 15.0307 0.00 0.13 0.00 0.10
16 15.0307 0.00 0.58 0.00 0.07
17 15.0334 0.00 -0.35 0.00 0.26
18 15.0334 0.00 0.11 0.00 0.03
19 15.0335 0.00 0.41 0.00 -0.20
20 15.0553 0.00 -0.39 0.00 -0.29
21 16.9833 0.00 0.46 0.00 -0.07
22 19.9919 0.00 -0.27 0.00 -0.07
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.
16FD60 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.723 45.723 45.723 ecceobj 0.203 0.203 0.203 incobj 15.932 15.932 15.932 qmin 35.855 35.890 35.891 qmax 56.343 56.336 56.324 amean 45.864 45.881 45.876 amin 45.458 45.480 45.475 amax 46.352 46.364 46.364 emean 0.199 0.199 0.199 emin 0.184 0.184 0.184 emax 0.217 0.216 0.216 imean 16.635 16.645 16.640 imin 16.002 16.023 16.016 imax 17.253 17.269 17.255 excite_mean 0.349 0.349 0.349 fracstop 1.000 1.000 1.000 cjmean 2.974 2.974 2.974 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 180.1 179.6 179.9 kozaiamp 180.0 180.0 179.9