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: 516977
# Created Tue Nov 26 02:07:13 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 56 observations of 56
# Arc: 5.26y
# First observation: 2012/04/17
# Last observation: 2017/07/21
# Chi-squared of fit: 49.41 DOF: 106 RMS: 0.17
# Min/Max residuals: -1.29 0.23
# Exact a, adot, b, bdot, g, gdot:
1.544579E-05 2.486677E-02 1.082521E-06 2.194845E-03 2.449019E-02 -3.544204E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.928852 -81.047379 0.954546 0.010824 -0.321325 2456034.840996
# Heliocentric elements and errors
Epoch: 2456034.5000 = 2012/04/17
Mean Anomaly: 311.35982 +/- 0.000
Argument of Peri: 88.57094 +/- 0.000
Long of Asc Node: 257.18042 +/- 0.000
Inclination: 5.46244 +/- 0.000
Eccentricity: 0.19352617 +/- 0.0000
Semi-Major Axis: 45.86060547 +/- 0.0000
Time of Perihelion: 2471361.2735 +/- 0.0
Perihelion: 36.98537802 +/- 0.0000
Aphelion: 54.73583292 +/- 0.0000
Period (y) 310.5760 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 5.46116710 +/- 0.0000
Ecliptic Y -40.77663588 +/- 0.0000
Ecliptic Z 1.37441755 +/- 0.0000
Ecliptic XDOT 0.00267822 +/- 0.0000
Ecliptic YDOT 0.00083562 +/- 0.0000
Ecliptic ZDOT 0.00023200 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.16377529 +/- 0.0000
Geocenter to KBO 40.83280542 +/- 0.0000
# Hcoef: 8.99
The following table shows the complete astrometric record for 516977. 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 (516977) followed by the observatory code and reference code for the source of the astrometry.
2012 04 17.34023 18 38 24.90 -21 12 44.9 516977 268 C~11qh 2012 04 17.34199 18 38 24.89 -21 12 45.0 516977 268 C~11qh 2012 04 17.38720 18 38 24.85 -21 12 44.8 516977 268 C~11qh 2012 04 17.41592 18 38 24.81 -21 12 44.7 516977 268 C~11qh 2012 04 18.26755 18 38 24.04 -21 12 42.0 516977 268 C~11qh 2012 04 18.31485 18 38 23.97 -21 12 41.9 516977 268 C~11qh 2012 04 18.36265 18 38 23.93 -21 12 41.7 516977 268 C~11qh 2012 04 18.40528 18 38 23.88 -21 12 41.7 516977 268 C~11qh 2012 04 19.30535 18 38 22.94 -21 12 38.8 516977 268 C~11qh 2012 04 19.30696 18 38 22.95 -21 12 39.0 516977 268 C~11qh 2012 04 19.31725 18 38 22.93 -21 12 39.0 516977 268 C~11qh 2012 04 19.35214 18 38 22.90 -21 12 38.8 516977 268 C~11qh 2012 04 19.36183 18 38 22.89 -21 12 38.8 516977 268 C~11qh 2012 04 19.36529 18 38 22.87 -21 12 38.9 516977 268 C~11qh 2012 04 19.39518 18 38 22.85 -21 12 38.7 516977 268 C~11qh 2012 04 19.39905 18 38 22.84 -21 12 38.5 26.0R 516977 268 C~11qh 2012 04 19.40424 18 38 22.83 -21 12 38.6 516977 268 C~11qh 2012 04 19.41581 18 38 22.82 -21 12 38.5 516977 268 C~11qh 2013 06 11.21626 18 41 39.73 -20 58 52.3 516977 268 C~11qh 2013 06 11.27933 18 41 39.43 -20 58 52.4 516977 268 C~11qh 2013 06 11.34902 18 41 39.10 -20 58 52.5 516977 268 C~11qh 2013 06 13.21699 18 41 29.98 -20 58 57.4 516977 268 C~11qh 2013 06 13.27759 18 41 29.68 -20 58 57.5 516977 268 C~11qh 2013 06 13.35667 18 41 29.28 -20 58 57.9 516977 268 C~11qh 2013 06 13.37736 18 41 29.19 -20 58 57.7 516977 268 C~11qh 2013 07 05.44641 18 39 36.03 -21 00 13.1 516977 266 C~11qh 2013 07 05.52857 18 39 35.59 -21 00 13.1 516977 266 C~11qh 2013 07 06.35581 18 39 31.32 -21 00 16.8 516977 266 C~11qh 2013 07 06.44409 18 39 30.86 -21 00 16.9 516977 266 C~11qh 2013 07 06.52777 18 39 30.42 -21 00 17.3 516977 266 C~11qh 2013 08 28.07314 18 35 53.91 -21 03 52.6 516977 268 C~11qh 2013 08 30.06766 18 35 49.40 -21 03 59.7 516977 268 C~11qh 2013 09 01.05404 18 35 45.26 -21 04 06.2 516977 268 C~11qh 2013 09 03.04605 18 35 41.48 -21 04 12.6 516977 268 C~11qh 2013 09 04.04974 18 35 39.72 -21 04 15.8 516977 268 C~11qh 2014 06 25.39062 18 46 41.456 -20 45 16.41 516977 266 C~2Gt8 2014 06 25.42914 18 46 41.255 -20 45 16.58 516977 266 C~2Gt8 2014 06 25.44525 18 46 41.168 -20 45 16.67 516977 266 C~2Gt8 2014 06 25.53018 18 46 40.726 -20 45 16.96 516977 266 C~2Gt8 2014 06 25.54954 18 46 40.616 -20 45 17.01 516977 266 C~2Gt8 2014 06 27.35925 18 46 31.267 -20 45 24.74 516977 266 C~2Gt8 2014 06 27.37093 18 46 31.205 -20 45 24.76 516977 266 C~2Gt8 2016 06 05.44847 19 00 44.841 -20 12 21.40 25.7r 516977 266 C~7wCn 2016 06 05.52553 19 00 44.495 -20 12 21.67 25.7r 516977 266 C~7wCn 2016 06 05.60261 19 00 44.148 -20 12 21.92 25.7r 516977 266 C~7wCn 2017 05 20.47377 19 08 03.408 -19 54 20.28 516977 568 C~2ccW 2017 05 20.53047 19 08 03.229 -19 54 20.36 24.9r 516977 568 C~2ccW 2017 06 22.44393 19 05 42.842 -19 56 19.89 24.9r 516977 568 C~2ccW 2017 06 23.44025 19 05 37.823 -19 56 25.47 24.8r 516977 568 C~2ccW 2017 06 23.49734 19 05 37.442 -19 56 26.05 23.0r 516977 568 C~2ccW 2017 07 20.27714 19 03 19.236 -19 59 28.25 24.7r 516977 266 C~7wCn 2017 07 20.41604 19 03 18.521 -19 59 29.31 24.7r 516977 266 C~7wCn 2017 07 20.55184 19 03 17.823 -19 59 30.29 24.7r 516977 266 C~7wCn 2017 07 21.26989 19 03 14.221 -19 59 35.64 24.8r 516977 266 C~7wCn 2017 07 21.38884 19 03 13.612 -19 59 36.55 24.8r 516977 266 C~7wCn 2017 07 21.50636 19 03 13.010 -19 59 37.41 24.8r 516977 266 C~7wCn
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 0.13 0.00 0.08
2 0.0000 0.00 0.01 0.00 -0.03
3 0.0001 0.00 0.07 0.00 0.03
4 0.0002 0.00 -0.11 0.00 0.04
5 0.0025 0.00 0.21 0.00 0.04
6 0.0027 0.00 -0.09 0.00 0.01
7 0.0028 0.00 0.08 0.00 0.07
8 0.0029 0.00 0.02 0.00 -0.06
9 0.0054 0.00 -0.09 0.00 0.10
10 0.0054 0.00 0.09 0.00 -0.10
11 0.0054 0.00 -0.04 0.00 -0.13
12 0.0055 0.00 0.13 0.00 -0.03
13 0.0055 0.00 0.15 0.00 -0.06
14 0.0055 0.00 -0.09 0.00 -0.17
15 0.0056 0.00 0.14 0.00 -0.06
16 0.0056 0.00 0.06 0.00 0.13
17 0.0057 0.00 0.00 0.00 0.02
18 0.0057 0.00 0.06 0.00 0.08
19 1.1496 0.00 -0.33 0.00 -0.12
20 1.1497 0.00 -0.16 0.00 -0.06
21 1.1499 0.00 0.04 0.00 0.01
22 1.1550 0.00 -0.15 0.00 0.01
23 1.1552 0.00 -0.10 0.00 0.07
24 1.1554 0.00 -0.18 0.00 -0.13
25 1.1555 0.00 0.02 0.00 0.12
26 1.2159 0.00 -0.05 0.00 -0.25
27 1.2161 0.00 -0.14 0.00 0.06
28 1.2184 0.00 -0.03 0.00 -0.35
29 1.2186 0.00 0.06 0.00 -0.09
30 1.2189 0.00 0.07 0.00 -0.17
31 1.3627 0.00 -0.03 0.00 0.23
32 1.3682 0.00 0.06 0.00 -0.03
33 1.3736 0.00 0.00 0.00 0.08
34 1.3791 0.00 -0.03 0.00 0.07
35 1.3818 0.00 -0.01 0.00 0.00
36 2.1877 0.00 0.07 0.00 0.13
37 2.1878 0.00 0.09 0.00 0.12
38 2.1878 0.00 0.06 0.00 0.10
39 2.1881 0.00 0.12 0.00 0.16
40 2.1881 0.00 -0.00 0.00 0.18
41 2.1931 0.00 0.06 0.00 0.05
42 2.1931 0.00 0.06 0.00 0.08
43 4.1345 0.00 0.01 0.00 -0.04
44 4.1347 0.00 0.02 0.00 -0.04
45 4.1349 0.00 0.02 0.00 -0.04
46 5.0900 0.00 0.07 0.00 -0.17
47 5.0902 0.00 0.20 0.00 -0.18
48 5.1803 0.00 0.05 0.00 -0.15
49 5.1830 0.00 0.02 0.00 0.04
50 5.1832 0.00 -1.29 0.00 -0.21
51 5.2565 0.00 0.18 0.00 0.08
52 5.2569 0.00 0.17 0.00 0.07
53 5.2573 0.00 0.16 0.00 0.08
54 5.2592 0.00 0.14 0.00 0.09
55 5.2595 0.00 0.14 0.00 0.09
56 5.2599 0.00 0.14 0.00 0.09
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.
516977 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 45.798 45.798 45.798 ecceobj 0.195 0.195 0.195 incobj 5.466 5.466 5.466 qmin 36.274 36.251 36.241 qmax 56.183 56.302 56.287 amean 45.993 46.010 46.008 amin 45.559 45.588 45.593 amax 46.529 46.509 46.536 emean 0.192 0.194 0.195 emin 0.175 0.176 0.178 emax 0.209 0.211 0.211 imean 7.652 7.569 7.575 imin 6.837 6.774 6.717 imax 8.521 8.404 8.423 excite_mean 0.234 0.235 0.235 fracstop 1.000 1.000 1.000 cjmean 3.058 3.058 3.058 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 181.6 182.1 185.1 kozaiamp 179.9 180.0 180.0