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: 496315
# Created Wed May 21 01:07:13 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 34 observations of 34
# Arc: 12.20y
# First observation: 2013/02/08
# Last observation: 2025/04/23
# Chi-squared of fit: 9.09 DOF: 62 RMS: 0.09
# Min/Max residuals: -0.28 0.22
# Exact a, adot, b, bdot, g, gdot:
1.539323E-05 2.161541E-02 9.609820E-06 1.419361E-02 2.211552E-02 -7.252560E-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
1.489937 -145.842561 0.948693 0.007020 -0.267848 2456332.068818
# Heliocentric elements and errors
Epoch: 2456332.5000 = 2013/02/09
Mean Anomaly: 355.29308 +/- 0.000
Argument of Peri: 42.52758 +/- 0.000
Long of Asc Node: 210.72871 +/- 0.000
Inclination: 33.58108 +/- 0.000
Eccentricity: 0.72447164 +/- 0.0000
Semi-Major Axis: 148.99981820 +/- 0.0000
Time of Perihelion: 2465018.3300 +/- 0.0
Perihelion: 41.05367539 +/- 0.0000
Aphelion: 256.94596101 +/- 0.0000
Period (y) 1818.8078 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.15735335 +/- 0.0000
Ecliptic Y -24.74288883 +/- 0.0000
Ecliptic Z 1.17613595 +/- 0.0000
Ecliptic XDOT 0.00227677 +/- 0.0000
Ecliptic YDOT -0.00168378 +/- 0.0000
Ecliptic ZDOT 0.00173333 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.49285595 +/- 0.0000
Geocenter to KBO 45.21737064 +/- 0.0000
# Hcoef: 6.58
The following table shows the complete astrometric record for 496315. 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 (496315) followed by the observatory code and reference code for the source of the astrometry.
2013 02 08.56804 14 09 40.000 -11 30 08.47 23.5r 496315 568 C~1WkW 2013 02 08.62754 14 09 39.986 -11 30 07.87 23.1r 496315 568 C~1WkW 2013 04 04.42583 14 07 32.880 -11 09 38.81 22.9r 496315 568 C~1WkW 2013 04 04.46629 14 07 32.721 -11 09 37.64 23.2r 496315 568 C~1WkW 2013 04 04.50656 14 07 32.568 -11 09 36.49 23.1r 496315 568 C~1WkW 2013 04 05.56132 14 07 28.532 -11 09 05.16 22.9r 496315 568 C~1WkW 2013 04 05.56537 14 07 28.525 -11 09 04.98 22.7r 496315 568 C~1WkW 2013 04 06.59893 14 07 24.542 -11 08 34.28 22.8r 496315 568 C~1WkW 2013 04 08.39969 14 07 17.560 -11 07 40.32 23.2r 496315 568 C~1WkW 2013 05 11.43388 14 05 04.514 -10 51 08.13 23.1r 496315 568 C~1WkW 2013 06 13.26956 14 03 19.569 -10 37 47.51 23.2r 496315 568 C~1WkW 2013 06 13.30999 14 03 19.491 -10 37 46.94 23.2r 496315 568 C~1WkW 2013 07 04.29102 14 02 46.561 -10 32 36.08 23.3r 496315 568 C~1WkW 2013 07 06.29852 14 02 45.147 -10 32 16.12 23.3r 496315 568 C~1WkW 2014 02 27.63490 14 15 16.139 -11 03 28.52 22.7r 496315 568 C~1WkW 2014 03 27.42459 14 14 01.981 -10 51 55.06 22.9r 496315 568 C~1WkW 2014 03 27.44930 14 14 01.904 -10 51 54.55 23.0r 496315 568 C~1WkW 2014 03 28.42582 14 13 58.502 -10 51 26.72 23.1r 496315 568 C~1WkW 2014 04 05.39234 14 13 29.341 -10 47 33.41 23.3r 496315 568 C~1WkW 2014 05 22.40950 14 10 22.419 -10 24 32.79 23.0r 496315 568 C~1WkW 2014 05 28.38167 14 10 01.712 -10 22 02.60 23.2r 496315 568 C~1WkW 2014 06 26.30928 14 08 49.366 -10 12 46.86 23.3r 496315 568 C~1WkW 2014 07 18.27586 14 08 34.407 -10 09 35.90 23.3r 496315 568 C~1WkW 2015 01 26.63780 14 21 25.977 -10 48 59.71 23.4r 496315 568 C~1WkW 2016 05 29.35593 14 22 05.639 -09 35 57.77 23.2w 496315 568 C~2GtA 2016 06 05.34098 14 21 42.686 -09 33 23.77 23.2w 496315 568 C~2GtA 2017 01 31.64818 14 33 40.102 -10 02 05.93 23.2w 496315 568 C~2GtA 2017 02 03.64476 14 33 42.595 -10 01 30.46 496315 568 C~2GtA 2017 03 27.64094 14 32 25.580 -09 42 13.51 496315 568 C~2GtA 2017 03 28.59333 14 32 22.406 -09 41 45.50 496315 568 C~2GtA 2017 05 24.26566 14 28 36.798 -09 14 13.39 23.0w 496315 568 C~2GtA 2025 04 23.395020 15 22 47.826 -05 50 34.11 22.7G 496315 G37 C~8uSm 2025 04 23.438510 15 22 47.641 -05 50 32.62 496315 G37 C~8uSm 2025 04 23.473510 15 22 47.488 -05 50 31.54 496315 G37 C~8uSm
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 0.05 0.00 0.10
2 0.0002 0.00 0.19 0.00 -0.03
3 0.1502 0.00 -0.09 0.00 -0.03
4 0.1503 0.00 -0.12 0.00 -0.05
5 0.1504 0.00 -0.07 0.00 -0.10
6 0.1533 0.00 -0.13 0.00 -0.04
7 0.1533 0.00 0.00 0.00 0.02
8 0.1561 0.00 -0.03 0.00 -0.06
9 0.1611 0.00 0.03 0.00 0.02
10 0.2515 0.00 0.03 0.00 -0.09
11 0.3414 0.00 -0.28 0.00 0.22
12 0.3415 0.00 -0.00 0.00 0.02
13 0.3990 0.00 0.02 0.00 -0.05
14 0.4045 0.00 0.03 0.00 0.02
15 1.0515 0.00 -0.02 0.00 0.06
16 1.1276 0.00 0.01 0.00 0.19
17 1.1277 0.00 0.16 0.00 -0.00
18 1.1303 0.00 0.08 0.00 -0.06
19 1.1522 0.00 -0.01 0.00 0.09
20 1.2809 0.00 0.18 0.00 0.03
21 1.2972 0.00 0.04 0.00 0.01
22 1.3764 0.00 0.13 0.00 -0.02
23 1.4366 0.00 0.08 0.00 -0.09
24 1.9632 0.00 -0.13 0.00 0.06
25 3.3013 0.00 -0.06 0.00 0.08
26 3.3204 0.00 0.04 0.00 -0.04
27 3.9783 0.00 0.03 0.00 0.05
28 3.9865 0.00 0.02 0.00 -0.25
29 4.1289 0.00 -0.09 0.00 -0.01
30 4.1315 0.00 0.00 0.00 -0.01
31 4.2866 0.00 -0.08 0.00 -0.09
32 12.2021 0.00 0.09 0.00 -0.06
33 12.2022 0.00 0.02 0.00 0.07
34 12.2023 0.00 -0.09 0.00 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.
496315 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 147.588 147.585 147.591 ecceobj 0.722 0.722 0.722 incobj 33.638 33.638 33.638 qmin 38.736 38.727 38.653 qmax 273.285 272.927 273.378 amean 150.433 150.379 150.598 amin 146.803 146.815 146.664 amax 156.770 156.640 156.756 emean 0.731 0.731 0.731 emin 0.719 0.719 0.719 emax 0.743 0.742 0.744 imean 33.425 33.421 33.418 imin 32.869 32.856 32.848 imax 34.333 34.307 34.333 excite_mean 0.915 0.915 0.915 fracstop 1.000 1.000 1.000 cjmean 2.748 2.748 2.748 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 64.8 64.9 64.9 kozaiamp 22.7 22.9 23.0