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: 15GL56
# Created Fri Nov 22 02:10:20 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 34 observations of 34
# Arc: 6.23y
# First observation: 2015/02/17
# Last observation: 2021/05/12
# Chi-squared of fit: 6.87 DOF: 62 RMS: 0.08
# Min/Max residuals: -0.16 0.29
# Exact a, adot, b, bdot, g, gdot:
1.517994E-05 2.578493E-02 -5.202923E-06 -8.241425E-03 2.631063E-02 -1.513407E-03
# Covariance matrix:
1.8253E-13 -4.8710E-14 -8.4793E-15 1.5886E-14 1.0636E-13 -2.9779E-13
-4.8710E-14 1.6096E-13 2.8709E-14 -5.6723E-14 6.3584E-14 1.0822E-12
-8.4793E-15 2.8709E-14 6.9662E-14 -2.8838E-14 9.9096E-15 2.1360E-13
1.5886E-14 -5.6723E-14 -2.8838E-14 3.6626E-14 -2.0508E-14 -4.2151E-13
1.0636E-13 6.3584E-14 9.9096E-15 -2.0508E-14 1.5591E-13 3.9689E-13
-2.9779E-13 1.0822E-12 2.1360E-13 -4.2151E-13 3.9689E-13 8.0382E-12
# lat0 lon0 xBary yBary zBary JD0
1.486262 -157.622835 0.798767 0.015111 -0.576659 2457070.990628
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 303.14817 +/- 0.037
Argument of Peri: 240.54213 +/- 0.050
Long of Asc Node: 25.76513 +/- 0.000
Inclination: 17.75503 +/- 0.000
Eccentricity: 0.08380273 +/- 0.0001
Semi-Major Axis: 40.22666180 +/- 0.0023
Time of Perihelion: 2471787.2327 +/- 11.8
Perihelion: 36.85555773 +/- 0.0043
Aphelion: 43.59776587 +/- 0.0045
Period (y) 255.1404 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -35.97390102 +/- 0.0005
Ecliptic Y -13.94556854 +/- 0.0002
Ecliptic Z 0.98560432 +/- 0.0000
Ecliptic XDOT 0.00114283 +/- 0.0000
Ecliptic YDOT -0.00243520 +/- 0.0000
Ecliptic ZDOT -0.00086130 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.59501720 +/- 0.0005
Geocenter to KBO 38.00750412 +/- 0.0006
# Hcoef: 7.54
The following table shows the complete astrometric record for 15GL56. 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 (15GL56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.48985 13 25 00.162 -07 19 48.55 23.5r 15GL56 568 C~2nvS 2015 02 17.53111 13 25 00.043 -07 19 48.09 23.4r 15GL56 568 C~2nvS 2015 03 18.45830 13 23 15.077 -07 11 00.58 23.4r 15GL56 568 C~2nvS 2015 03 18.50960 13 23 14.841 -07 10 59.45 23.0r 15GL56 568 C~2nvS 2015 03 20.51135 13 23 05.733 -07 10 13.17 22.8r 15GL56 568 C~2nvS 2015 04 11.37862 13 21 18.597 -07 01 11.63 23.0r 15GL56 568 C~2nvS 2015 04 11.40216 13 21 18.450 -07 01 10.82 23.4r 15GL56 568 C~2nvS 2015 04 12.35479 13 21 13.626 -07 00 46.84 23.3r 15GL56 568 C~2nvS 2015 04 12.39573 13 21 13.411 -07 00 45.77 23.4r 15GL56 568 C~2nvS 2015 04 12.44139 13 21 13.180 -07 00 44.58 23.2r 15GL56 568 C~2nvS 2015 04 19.27164 13 20 38.65 -06 57 53.0 24.1V 15GL56 W84 C~2zsP 2015 04 21.27595 13 20 28.61 -06 57 03.4 15GL56 W84 C~2zsP 2015 04 22.27234 13 20 23.62 -06 56 39.1 15GL56 W84 C~2zsP 2015 05 25.36134 13 17 58.794 -06 45 30.75 23.2r 15GL56 568 C~2nvS 2015 07 12.26411 13 16 45.637 -06 43 45.24 23.5r 15GL56 568 C~2nvS 2015 07 15.25415 13 16 48.013 -06 44 20.68 23.5r 15GL56 568 C~2nvS 2015 07 19.25345 13 16 52.508 -06 45 16.27 23.7r 15GL56 568 C~2nvS 2016 02 04.55519 13 30 16.069 -08 20 41.66 23.8w 15GL56 568 C~2nvS 2016 02 10.54313 13 30 06.960 -08 20 08.37 23.5w 15GL56 568 C~2nvS 2016 04 03.42913 13 26 48.770 -08 04 15.14 23.6w 15GL56 568 C~2nvS 2016 04 09.40893 13 26 18.557 -08 01 45.75 23.4w 15GL56 568 C~2nvS 2016 05 06.30882 13 24 05.480 -07 51 00.71 23.5w 15GL56 568 C~2nvS 2016 05 28.27599 13 22 36.977 -07 44 24.54 23.5w 15GL56 568 C~2nvS 2016 05 28.28005 13 22 36.964 -07 44 24.51 23.5w 15GL56 568 C~2nvS 2016 05 28.28814 13 22 36.937 -07 44 24.33 23.5w 15GL56 568 C~2nvS 2016 06 04.35749 13 22 15.107 -07 42 58.00 23.6w 15GL56 568 C~2nvS 2016 06 04.36154 13 22 15.094 -07 42 58.06 23.7w 15GL56 568 C~2nvS 2016 06 27.28890 13 21 32.862 -07 41 10.91 23.5w 15GL56 568 C~2nvS 2016 07 07.29150 13 21 29.408 -07 41 54.19 23.9w 15GL56 568 C~2nvS 2017 03 28.57437 13 32 15.609 -09 06 44.29 15GL56 568 C~2nvS 2017 03 29.43565 13 32 11.435 -09 06 23.99 23.6w 15GL56 568 C~2nvS 2021 05 12.210920 13 48 43.990 -12 49 00.38 23.5G 15GL56 G37 C~4pVn 2021 05 12.262680 13 48 43.743 -12 48 59.23 15GL56 G37 C~4pVn 2021 05 12.310510 13 48 43.511 -12 48 58.19 15GL56 G37 C~4pVn
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 0.08 0.00 0.02
2 0.0001 0.00 -0.07 0.00 -0.02
3 0.0793 0.00 -0.01 0.00 0.08
4 0.0795 0.00 -0.01 0.00 0.04
5 0.0849 0.00 -0.06 0.00 -0.00
6 0.1448 0.00 0.29 0.00 -0.16
7 0.1449 0.00 -0.09 0.00 0.05
8 0.1475 0.00 -0.08 0.00 -0.09
9 0.1476 0.00 -0.14 0.00 -0.06
10 0.1477 0.00 -0.07 0.00 -0.02
11 0.1664 0.00 0.10 0.00 0.01
12 0.1719 0.00 0.25 0.00 0.18
13 0.1746 0.00 -0.03 0.00 0.11
14 0.2652 0.00 0.00 0.00 -0.05
15 0.3964 0.00 -0.06 0.00 -0.01
16 0.4046 0.00 0.00 0.00 0.16
17 0.4155 0.00 -0.04 0.00 0.09
18 0.9639 0.00 0.05 0.00 -0.04
19 0.9803 0.00 -0.09 0.00 -0.02
20 1.1251 0.00 -0.01 0.00 -0.00
21 1.1415 0.00 -0.04 0.00 0.00
22 1.2151 0.00 0.08 0.00 0.03
23 1.2753 0.00 -0.02 0.00 -0.03
24 1.2753 0.00 -0.00 0.00 -0.05
25 1.2753 0.00 0.01 0.00 0.02
26 1.2946 0.00 -0.01 0.00 -0.01
27 1.2947 0.00 -0.03 0.00 -0.12
28 1.3574 0.00 -0.03 0.00 -0.01
29 1.3848 0.00 -0.06 0.00 -0.06
30 2.1084 0.00 -0.12 0.00 -0.04
31 2.1107 0.00 -0.04 0.00 0.02
32 6.2306 0.00 -0.03 0.00 0.03
33 6.2307 0.00 0.05 0.00 0.03
34 6.2309 0.00 0.05 0.00 -0.00
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.
15GL56 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 39.886 39.886 39.886 ecceobj 0.082 0.082 0.082 incobj 17.828 17.828 17.828 qmin 36.041 35.860 35.893 qmax 44.349 44.542 44.433 amean 40.107 40.119 40.111 amin 39.778 39.792 39.778 amax 40.451 40.465 40.467 emean 0.077 0.079 0.078 emin 0.057 0.060 0.058 emax 0.099 0.102 0.100 imean 16.664 16.674 16.665 imin 15.503 15.529 15.494 imax 17.832 17.843 17.830 excite_mean 0.297 0.298 0.297 fracstop 1.000 1.000 1.000 cjmean 2.955 2.955 2.955 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 182.4 181.8 181.5 kozaiamp 179.9 180.0 179.9