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: 16SE58 # Created Fri Nov 22 02:10:46 2024 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 3.38y # First observation: 2014/08/19 # Last observation: 2018/01/05 Preliminary a, adot, b, bdot, g, gdot: 0.000235 0.022613 -0.000017 -0.003168 0.023879 0.000000 # Chi-squared of fit: 5.74 DOF: 30 RMS: 0.10 # Min/Max residuals: -0.27 0.24 # Exact a, adot, b, bdot, g, gdot: 1.463680E-05 2.262635E-02 -2.066486E-06 -3.172218E-03 2.375825E-02 3.722376E-03 # Covariance matrix: 7.0890E-13 -2.3717E-13 -4.9635E-15 2.2415E-14 2.0973E-13 -1.1278E-12 -2.3717E-13 5.1403E-13 5.3498E-14 -1.0338E-13 2.5278E-13 8.6114E-12 -4.9635E-15 5.3498E-14 4.6421E-13 -1.9716E-13 3.3609E-14 1.0867E-12 2.2415E-14 -1.0338E-13 -1.9716E-13 1.1580E-13 -5.2309E-14 -2.1026E-12 2.0973E-13 2.5278E-13 3.3609E-14 -5.2309E-14 3.8866E-13 5.0858E-12 -1.1278E-12 8.6114E-12 1.0867E-12 -2.1026E-12 5.0858E-12 1.7498E-10 # lat0 lon0 xBary yBary zBary JD0 -13.933148 30.696538 0.916456 -0.104795 -0.422957 2456888.884168 # Heliocentric elements and errors Epoch: 2456880.5000 = 2014/08/11 Mean Anomaly: 73.37087 +/- 0.063 Argument of Peri: 150.26535 +/- 0.030 Long of Asc Node: 150.94216 +/- 0.002 Inclination: 16.05981 +/- 0.000 Eccentricity: 0.13878629 +/- 0.0006 Semi-Major Axis: 43.43852521 +/- 0.0088 Time of Perihelion: 2435568.1077 +/- 17.1 Perihelion: 37.40985338 +/- 0.0262 Aphelion: 49.46719703 +/- 0.0270 Period (y) 286.2996 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.96809799 +/- 0.0009 Ecliptic Y 20.29111229 +/- 0.0005 Ecliptic Z -10.13508412 +/- 0.0003 Ecliptic XDOT -0.00105363 +/- 0.0000 Ecliptic YDOT 0.00240538 +/- 0.0000 Ecliptic ZDOT -0.00045797 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.52238518 +/- 0.0008 Geocenter to KBO 42.09064642 +/- 0.0011 # Hcoef: 7.59
The following table shows the complete astrometric record for 16SE58. 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 (16SE58) followed by the observatory code and reference code for the source of the astrometry.
2014 08 19.38339 02 13 36.691 -01 21 56.40 24.0i 16SE58 W84 C~52Zn 2014 12 16.15305 02 06 37.118 -02 07 06.63 23.5r 16SE58 W84 C~52Zn 2015 01 14.06383 02 05 56.372 -02 02 01.69 24.3r 16SE58 W84 C~52Zn 2015 12 15.15674 02 11 48.670 -01 50 45.41 23.9r 16SE58 W84 C~52Zn 2016 09 27.52408 02 22 12.97 -01 09 18.6 24.3g 16SE58 568 C~2eAJ 2016 09 27.58325 02 22 12.75 -01 09 20.5 24.1g 16SE58 568 C~2eAJ 2016 09 28.47270 02 22 09.48 -01 09 48.4 24.6g 16SE58 568 C~2eAJ 2016 09 28.53321 02 22 09.25 -01 09 50.3 24.3g 16SE58 568 C~2eAJ 2016 09 29.48459 02 22 05.69 -01 10 20.2 24.4g 16SE58 568 C~2eAJ 2016 09 29.60513 02 22 05.23 -01 10 24.0 24.3g 16SE58 568 C~2eAJ 2016 10 27.21542 02 20 07.938 -01 23 40.32 24.3r 16SE58 W84 C~52Zn 2016 11 29.17977 02 17 45.812 -01 33 19.96 24.0r 16SE58 W84 C~52Zn 2016 12 05.18107 02 17 24.053 -01 34 03.18 23.4i 16SE58 W84 C~52Zn 2016 12 05.18245 02 17 24.034 -01 34 03.13 24.4g 16SE58 W84 C~52Zn 2017 10 29.27587 02 25 05.753 -01 08 01.21 23.8i 16SE58 W84 C~52Zn 2017 10 29.27726 02 25 05.750 -01 08 01.09 23.7r 16SE58 W84 C~52Zn 2017 10 29.27862 02 25 05.728 -01 08 01.24 23.8g 16SE58 W84 C~52Zn 2018 01 05.06821 02 21 12.568 -01 15 53.50 24.2g 16SE58 W84 C~52Zn
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 0.09 0.00 -0.01
2 0.3252 -6840.62 -0.12 -397.48 -0.06
3 0.4043 -7311.23 0.02 97.86 -0.04
4 1.3218 -2113.47 0.08 -1070.78 0.03
5 2.1085 7537.08 -0.03 -1941.00 0.04
6 2.1087 7533.32 -0.03 -1941.65 -0.01
7 2.1111 7477.61 0.01 -1951.04 0.07
8 2.1113 7473.72 0.01 -1951.64 0.08
9 2.1139 7413.23 -0.13 -1961.42 0.10
10 2.1142 7405.44 -0.09 -1962.62 0.06
11 2.1898 5478.13 0.21 -2107.42 0.03
12 2.2801 3276.22 -0.08 -1921.36 0.24
13 2.2965 2954.80 0.09 -1850.16 -0.27
14 2.2965 2954.55 -0.09 -1850.02 -0.14
15 3.1948 10002.46 0.04 -2758.65 -0.10
16 3.1948 10002.46 0.15 -2758.52 0.03
17 3.1948 10002.09 -0.12 -2758.55 -0.00
18 3.3804 6549.57 -0.02 -2001.24 -0.05
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.
16SE58 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.801 43.828 43.774 ecceobj 0.143 0.144 0.142 incobj 16.023 16.024 16.023 qmin 36.540 36.476 36.595 qmax 50.697 50.844 50.636 amean 43.469 43.497 43.446 amin 43.104 43.133 43.081 amax 43.868 43.888 43.851 emean 0.139 0.140 0.138 emin 0.123 0.123 0.123 emax 0.156 0.159 0.155 imean 15.080 15.073 15.077 imin 14.428 14.404 14.472 imax 15.796 15.802 15.810 excite_mean 0.295 0.296 0.295 fracstop 1.000 1.000 1.000 cjmean 2.991 2.991 2.991 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 180.8 181.8 180.4 kozaiamp 180.0 180.0 180.0