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: 486958
# Created Sun Nov 24 02:07:08 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 112 observations of 112
# Arc: 4.11y
# First observation: 2014/06/26
# Last observation: 2018/08/04
# Chi-squared of fit: 52.10 DOF: 218 RMS: 0.12
# Min/Max residuals: -0.30 0.35
# Exact a, adot, b, bdot, g, gdot:
1.422577E-05 2.269851E-02 -5.687577E-07 -5.064427E-04 2.358590E-02 -6.946008E-04
# 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
2.142379 -79.448893 0.105648 0.037946 -1.012184 2456834.870018
# Heliocentric elements and errors
Epoch: 2456834.5000 = 2014/06/26
Mean Anomaly: 297.46761 +/- 0.000
Argument of Peri: 187.59348 +/- 0.000
Long of Asc Node: 159.00643 +/- 0.000
Inclination: 2.45123 +/- 0.000
Eccentricity: 0.03549688 +/- 0.0000
Semi-Major Axis: 44.08554368 +/- 0.0000
Time of Perihelion: 2475405.9273 +/- 0.0
Perihelion: 42.52064434 +/- 0.0000
Aphelion: 45.65044303 +/- 0.0000
Period (y) 292.7201 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.83845061 +/- 0.0000
Ecliptic Y -42.66549992 +/- 0.0000
Ecliptic Z 1.58497714 +/- 0.0000
Ecliptic XDOT 0.00257080 +/- 0.0000
Ecliptic YDOT 0.00055569 +/- 0.0000
Ecliptic ZDOT -0.00006164 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.40852599 +/- 0.0000
Geocenter to KBO 42.39823818 +/- 0.0000
# Hcoef: 11.01
The following table shows the complete astrometric record for 486958. 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 (486958) followed by the observatory code and reference code for the source of the astrometry.
2014 06 26.36924 18 45 10.671 -20 53 03.06 26.8R 486958 250 S~26fI 2014 06 26.37539 18 45 10.636 -20 53 03.10 27.0R 486958 250 S~26fI 2014 06 26.38153 18 45 10.595 -20 53 03.18 27.0R 486958 250 S~26fI 2014 06 26.38768 18 45 10.557 -20 53 03.23 26.5R 486958 250 S~26fI 2014 06 26.39382 18 45 10.521 -20 53 03.31 26.7R 486958 250 S~26fI 2014 06 26.50197 18 45 10.019 -20 53 03.77 26.2R 486958 250 S~26fI 2014 06 26.50812 18 45 09.983 -20 53 03.80 27.1R 486958 250 S~26fI 2014 06 26.51426 18 45 09.943 -20 53 03.88 27.2R 486958 250 S~26fI 2014 06 26.52041 18 45 09.905 -20 53 03.95 27.3R 486958 250 S~26fI 2014 06 26.52656 18 45 09.870 -20 53 04.01 27.4R 486958 250 S~26fI 2014 08 02.54538 18 42 15.467 -20 56 43.22 27.5R 486958 250 S~26fI 2014 08 02.55152 18 42 15.433 -20 56 43.22 27.1R 486958 250 S~26fI 2014 08 02.55767 18 42 15.402 -20 56 43.19 25.1R 486958 250 S~26fI 2014 08 02.56381 18 42 15.373 -20 56 43.16 27.0R 486958 250 S~26fI 2014 08 03.73983 18 42 10.581 -20 56 50.45 26.5R 486958 250 S~26fI 2014 08 03.74598 18 42 10.547 -20 56 50.41 27.0R 486958 250 S~26fI 2014 08 03.75212 18 42 10.517 -20 56 50.40 28.1R 486958 250 S~26fI 2014 08 03.75827 18 42 10.499 -20 56 50.37 27.6R 486958 250 S~26fI 2014 08 21.31900 18 41 08.704 -20 58 32.35 26.2R 486958 250 S~26fI 2014 08 21.32514 18 41 08.680 -20 58 32.41 25.8R 486958 250 S~26fI 2014 08 21.33129 18 41 08.655 -20 58 32.52 26.7R 486958 250 S~26fI 2014 08 21.33744 18 41 08.627 -20 58 32.59 27.2R 486958 250 S~26fI 2014 08 21.34358 18 41 08.606 -20 58 32.63 26.6R 486958 250 S~26fI 2014 08 21.38535 18 41 08.512 -20 58 32.73 27.4R 486958 250 S~26fI 2014 08 21.39150 18 41 08.486 -20 58 32.79 27.0R 486958 250 S~26fI 2014 08 21.39764 18 41 08.462 -20 58 32.88 26.8R 486958 250 S~26fI 2014 08 21.40379 18 41 08.436 -20 58 32.94 26.5R 486958 250 S~26fI 2014 08 21.40994 18 41 08.412 -20 58 33.00 26.7R 486958 250 S~26fI 2014 08 23.17695 18 41 03.420 -20 58 42.47 27.5R 486958 250 S~26fI 2014 08 23.18310 18 41 03.397 -20 58 42.52 27.0R 486958 250 S~26fI 2014 08 23.18924 18 41 03.373 -20 58 42.64 27.2R 486958 250 S~26fI 2014 08 23.19539 18 41 03.350 -20 58 42.70 27.7R 486958 250 S~26fI 2014 08 23.20153 18 41 03.324 -20 58 42.77 26.9R 486958 250 S~26fI 2014 08 23.24332 18 41 03.236 -20 58 42.85 26.1R 486958 250 S~26fI 2014 08 23.24946 18 41 03.213 -20 58 42.90 26.1R 486958 250 S~26fI 2014 08 23.25561 18 41 03.189 -20 58 42.98 26.3R 486958 250 S~26fI 2014 08 23.26175 18 41 03.163 -20 58 43.05 26.9R 486958 250 S~26fI 2014 08 23.26790 18 41 03.140 -20 58 43.13 26.1R 486958 250 S~26fI 2014 10 15.06699 18 40 43.948 -21 01 45.51 26.5R 486958 250 S~26fI 2014 10 15.07313 18 40 43.955 -21 01 45.55 26.2R 486958 250 S~26fI 2014 10 15.07928 18 40 43.962 -21 01 45.58 25.8R 486958 250 S~26fI 2014 10 15.08542 18 40 43.966 -21 01 45.64 25.4R 486958 250 S~26fI 2014 10 15.09157 18 40 43.977 -21 01 45.65 25.5R 486958 250 S~26fI 2014 10 15.13334 18 40 44.093 -21 01 45.60 26.7R 486958 250 S~26fI 2014 10 15.13949 18 40 44.100 -21 01 45.61 26.9R 486958 250 S~26fI 2014 10 15.14563 18 40 44.107 -21 01 45.65 27.1R 486958 250 S~26fI 2014 10 15.15178 18 40 44.113 -21 01 45.71 27.4R 486958 250 S~26fI 2014 10 15.15792 18 40 44.121 -21 01 45.73 26.8R 486958 250 S~26fI 2014 10 16.19482 18 40 46.483 -21 01 46.56 26.9R 486958 250 S~26fI 2014 10 16.20097 18 40 46.508 -21 01 46.94 29.0R 486958 250 S~26fI 2014 10 16.20711 18 40 46.497 -21 01 46.67 27.7R 486958 250 S~26fI 2014 10 16.21326 18 40 46.506 -21 01 46.71 26.9R 486958 250 S~26fI 2014 10 16.21941 18 40 46.513 -21 01 46.73 28.4R 486958 250 S~26fI 2014 10 22.36438 18 41 02.502 -21 01 49.71 26.0R 486958 250 S~26fI 2014 10 22.37053 18 41 02.513 -21 01 49.82 26.9R 486958 250 S~26fI 2014 10 22.37667 18 41 02.524 -21 01 49.87 26.9R 486958 250 S~26fI 2014 10 22.38282 18 41 02.533 -21 01 49.94 27.0R 486958 250 S~26fI 2014 10 22.38897 18 41 02.545 -21 01 49.95 27.2R 486958 250 S~26fI 2015 05 04.69178 18 54 04.856 -20 45 17.13 28.3R 486958 250 S~26fI 2015 05 04.69791 18 54 04.834 -20 45 17.09 27.0R 486958 250 S~26fI 2015 05 04.70403 18 54 04.815 -20 45 17.03 27.1R 486958 250 S~26fI 2015 05 04.71015 18 54 04.796 -20 45 16.99 26.7R 486958 250 S~26fI 2015 07 04.60444 18 50 04.474 -20 49 11.58 27.0R 486958 250 S~26fI 2015 07 04.61057 18 50 04.437 -20 49 11.60 26.8R 486958 250 S~26fI 2015 07 04.61670 18 50 04.399 -20 49 11.61 27.4R 486958 250 S~26fI 2015 07 04.62284 18 50 04.360 -20 49 11.62 26.8R 486958 250 S~26fI 2015 07 04.62897 18 50 04.324 -20 49 11.64 26.8R 486958 250 S~26fI 2016 03 15.00829 18 59 12.343 -20 42 13.66 27.0R 486958 250 S~26fI 2016 03 15.01440 18 59 12.355 -20 42 13.66 27.1R 486958 250 S~26fI 2016 03 15.02051 18 59 12.363 -20 42 13.62 27.3R 486958 250 S~26fI 2016 03 15.02662 18 59 12.373 -20 42 13.52 26.7R 486958 250 S~26fI 2016 03 15.03273 18 59 12.386 -20 42 13.41 27.1R 486958 250 S~26fI 2016 05 15.09107 18 59 07.565 -20 39 50.46 26.6R 486958 250 S~26fI 2016 05 15.09718 18 59 07.541 -20 39 50.50 26.5R 486958 250 S~26fI 2016 05 15.10329 18 59 07.518 -20 39 50.47 26.6R 486958 250 S~26fI 2016 05 15.10940 18 59 07.491 -20 39 50.45 27.0R 486958 250 S~26fI 2016 05 15.11551 18 59 07.468 -20 39 50.38 26.8R 486958 250 S~26fI 2016 07 03.57750 18 55 39.511 -20 43 53.11 27.5R 486958 250 S~26fI 2016 07 03.58339 18 55 39.474 -20 43 53.17 26.6R 486958 250 S~26fI 2016 07 03.59587 18 55 39.400 -20 43 53.14 28.8R 486958 250 S~26fI 2016 07 03.60205 18 55 39.361 -20 43 53.07 28.0R 486958 250 S~26fJ 2016 07 03.64376 18 55 39.182 -20 43 53.57 27.4R 486958 250 S~26fJ 2016 07 03.64965 18 55 39.142 -20 43 53.65 27.4R 486958 250 S~26fJ 2016 07 03.65595 18 55 39.107 -20 43 53.67 27.3R 486958 250 S~26fJ 2016 07 03.66214 18 55 39.070 -20 43 53.61 28.2R 486958 250 S~26fJ 2016 07 03.66832 18 55 39.036 -20 43 53.48 28.4R 486958 250 S~26fJ 2016 07 03.71002 18 55 38.855 -20 43 54.02 27.8R 486958 250 S~26fJ 2016 07 03.71591 18 55 38.819 -20 43 54.09 28.4R 486958 250 S~26fJ 2016 07 03.72222 18 55 38.780 -20 43 54.12 28.7R 486958 250 S~26fJ 2016 07 03.72840 18 55 38.742 -20 43 54.05 27.9R 486958 250 S~26fJ 2016 07 03.73458 18 55 38.708 -20 43 53.99 27.7R 486958 250 S~26fJ 2016 07 03.77627 18 55 38.528 -20 43 54.50 28.0R 486958 250 S~26fJ 2016 07 03.78216 18 55 38.493 -20 43 54.55 27.8R 486958 250 S~26fJ 2016 07 03.78847 18 55 38.454 -20 43 54.53 28.1R 486958 250 S~26fJ 2016 07 03.79465 18 55 38.413 -20 43 54.53 29.2R 486958 250 S~26fJ 2016 07 03.80083 18 55 38.381 -20 43 54.45 28.2R 486958 250 S~26fJ 2016 07 25.70106 18 53 53.037 -20 46 32.22 27.4R 486958 250 S~26fJ 2016 07 25.70717 18 53 53.003 -20 46 32.26 27.1R 486958 250 S~26fJ 2016 07 25.71328 18 53 52.967 -20 46 32.32 26.8R 486958 250 S~26fJ 2016 07 25.71939 18 53 52.930 -20 46 32.37 27.3R 486958 250 S~26fJ 2016 07 25.72550 18 53 52.897 -20 46 32.43 27.5R 486958 250 S~26fJ 2016 10 21.20737 18 51 48.303 -20 53 07.58 28.3R 486958 250 S~26fJ 2016 10 21.21348 18 51 48.318 -20 53 07.64 26.4R 486958 250 S~26fJ 2016 10 21.22570 18 51 48.335 -20 53 07.52 26.8R 486958 250 S~26fJ 2016 10 21.23181 18 51 48.345 -20 53 07.45 27.7R 486958 250 S~26fJ 2016 10 24.25448 18 51 56.623 -20 53 06.39 26.3R 486958 250 S~26fJ 2016 10 24.26059 18 51 56.630 -20 53 06.39 26.5R 486958 250 S~26fJ 2016 10 24.26670 18 51 56.644 -20 53 06.31 26.5R 486958 250 S~26fJ 2016 10 24.27281 18 51 56.654 -20 53 06.21 27.1R 486958 250 S~26fJ 2016 10 24.27892 18 51 56.667 -20 53 06.16 26.2R 486958 250 S~26fJ 2017 07 17.159792 19 00 08.292 -20 39 37.98 486958 275 S~7ml5 2018 08 04.056607 19 04 21.478 -20 35 36.55 486958 275 S~7ml5
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 0.21 0.00 0.06
2 0.0000 0.00 0.14 0.00 0.06
3 0.0000 0.00 -0.02 0.00 0.01
4 0.0001 0.00 -0.14 0.00 -0.01
5 0.0001 0.00 -0.22 0.00 -0.06
6 0.0004 0.00 0.22 0.00 0.06
7 0.0004 0.00 0.13 0.00 0.07
8 0.0004 0.00 -0.01 0.00 0.02
9 0.0004 0.00 -0.13 0.00 -0.02
10 0.0004 0.00 -0.20 0.00 -0.05
11 0.1018 0.00 0.08 0.00 -0.10
12 0.1018 0.00 -0.05 0.00 -0.06
13 0.1018 0.00 -0.14 0.00 0.00
14 0.1018 0.00 -0.19 0.00 0.07
15 0.1051 0.00 0.09 0.00 -0.10
16 0.1051 0.00 -0.04 0.00 -0.02
17 0.1051 0.00 -0.12 0.00 0.02
18 0.1051 0.00 -0.01 0.00 0.09
19 0.1532 0.00 0.19 0.00 0.09
20 0.1532 0.00 0.10 0.00 0.06
21 0.1532 0.00 -0.01 0.00 -0.01
22 0.1532 0.00 -0.16 0.00 -0.05
23 0.1532 0.00 -0.20 0.00 -0.05
24 0.1534 0.00 0.21 0.00 0.07
25 0.1534 0.00 0.09 0.00 0.05
26 0.1534 0.00 -0.00 0.00 -0.01
27 0.1534 0.00 -0.13 0.00 -0.03
28 0.1534 0.00 -0.22 0.00 -0.06
29 0.1583 0.00 0.20 0.00 0.08
30 0.1583 0.00 0.11 0.00 0.07
31 0.1583 0.00 0.01 0.00 -0.02
32 0.1583 0.00 -0.08 0.00 -0.05
33 0.1583 0.00 -0.21 0.00 -0.09
34 0.1585 0.00 0.20 0.00 0.06
35 0.1585 0.00 0.11 0.00 0.04
36 0.1585 0.00 0.01 0.00 -0.00
37 0.1585 0.00 -0.13 0.00 -0.04
38 0.1585 0.00 -0.22 0.00 -0.09
39 0.3031 0.00 0.19 0.00 0.07
40 0.3031 0.00 0.09 0.00 0.04
41 0.3031 0.00 -0.01 0.00 0.02
42 0.3031 0.00 -0.15 0.00 -0.04
43 0.3031 0.00 -0.19 0.00 -0.04
44 0.3033 0.00 0.18 0.00 0.05
45 0.3033 0.00 0.08 0.00 0.04
46 0.3033 0.00 -0.02 0.00 0.01
47 0.3033 0.00 -0.13 0.00 -0.04
48 0.3033 0.00 -0.22 0.00 -0.06
49 0.3062 0.00 0.18 0.00 0.07
50 0.3062 0.00 0.35 0.00 -0.30
51 0.3062 0.00 -0.03 0.00 -0.03
52 0.3062 0.00 -0.11 0.00 -0.06
53 0.3062 0.00 -0.22 0.00 -0.08
54 0.3231 0.00 0.23 0.00 0.11
55 0.3231 0.00 0.13 0.00 0.01
56 0.3231 0.00 0.03 0.00 -0.04
57 0.3231 0.00 -0.10 0.00 -0.11
58 0.3231 0.00 -0.19 0.00 -0.12
59 0.8551 0.00 0.13 0.00 -0.07
60 0.8551 0.00 -0.01 0.00 -0.03
61 0.8551 0.00 -0.11 0.00 0.03
62 0.8551 0.00 -0.21 0.00 0.07
63 1.0219 0.00 0.22 0.00 -0.03
64 1.0219 0.00 0.12 0.00 -0.01
65 1.0219 0.00 0.00 0.00 0.02
66 1.0219 0.00 -0.13 0.00 0.05
67 1.0219 0.00 -0.21 0.00 0.07
68 1.7184 0.00 0.19 0.00 -0.10
69 1.7184 0.00 0.11 0.00 -0.14
70 1.7184 0.00 -0.04 0.00 -0.14
71 1.7184 0.00 -0.15 0.00 -0.08
72 1.7184 0.00 -0.21 0.00 -0.01
73 1.8856 0.00 0.19 0.00 -0.08
74 1.8856 0.00 0.09 0.00 -0.11
75 1.8857 0.00 0.01 0.00 -0.06
76 1.8857 0.00 -0.13 0.00 -0.03
77 1.8857 0.00 -0.22 0.00 0.05
78 2.0211 0.00 0.20 0.00 -0.15
79 2.0211 0.00 0.08 0.00 -0.17
80 2.0212 0.00 -0.11 0.00 -0.05
81 2.0212 0.00 -0.24 0.00 0.06
82 2.0213 0.00 0.17 0.00 -0.15
83 2.0213 0.00 0.00 0.00 -0.19
84 2.0213 0.00 -0.06 0.00 -0.17
85 2.0213 0.00 -0.15 0.00 -0.07
86 2.0214 0.00 -0.21 0.00 0.11
87 2.0215 0.00 0.17 0.00 -0.15
88 2.0215 0.00 0.06 0.00 -0.18
89 2.0215 0.00 -0.05 0.00 -0.16
90 2.0215 0.00 -0.17 0.00 -0.05
91 2.0215 0.00 -0.22 0.00 0.05
92 2.0216 0.00 0.17 0.00 -0.17
93 2.0217 0.00 0.08 0.00 -0.18
94 2.0217 0.00 -0.04 0.00 -0.11
95 2.0217 0.00 -0.20 0.00 -0.07
96 2.0217 0.00 -0.22 0.00 0.05
97 2.0817 0.00 0.21 0.00 0.03
98 2.0817 0.00 0.12 0.00 0.04
99 2.0817 0.00 -0.01 0.00 0.02
100 2.0817 0.00 -0.14 0.00 0.01
101 2.0817 0.00 -0.22 0.00 -0.00
102 2.3213 0.00 0.09 0.00 -0.09
103 2.3213 0.00 0.08 0.00 -0.15
104 2.3213 0.00 -0.14 0.00 -0.03
105 2.3213 0.00 -0.23 0.00 0.03
106 2.3296 0.00 0.18 0.00 -0.14
107 2.3296 0.00 0.02 0.00 -0.14
108 2.3296 0.00 -0.03 0.00 -0.07
109 2.3296 0.00 -0.15 0.00 0.03
110 2.3297 0.00 -0.22 0.00 0.07
111 3.0576 0.00 0.01 0.00 0.06
112 4.1059 0.00 -0.12 0.00 -0.16
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.
486958 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.074 44.074 44.074 ecceobj 0.040 0.040 0.040 incobj 2.448 2.448 2.448 qmin 41.716 41.714 41.727 qmax 47.058 47.057 47.054 amean 44.287 44.287 44.287 amin 43.940 43.941 43.940 amax 44.634 44.636 44.635 emean 0.040 0.040 0.040 emin 0.024 0.024 0.024 emax 0.054 0.054 0.054 imean 2.521 2.521 2.521 imin 1.907 1.907 1.907 imax 3.103 3.103 3.103 excite_mean 0.060 0.060 0.060 fracstop 1.000 1.000 1.000 cjmean 3.101 3.101 3.101 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 177.9 177.8 177.9 kozaiamp 180.0 179.9 180.0