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: 17GU36
# Created Mon Apr 28 01:11:08 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 16 observations of 16
# Arc: 5.09y
# First observation: 2014/02/27
# Last observation: 2019/04/03
# Chi-squared of fit: 6.87 DOF: 26 RMS: 0.12
# Min/Max residuals: -0.21 0.20
# Exact a, adot, b, bdot, g, gdot:
1.604017E-05 2.375057E-02 2.305096E-06 1.711618E-03 2.418297E-02 1.743110E-03
# Covariance matrix:
3.6355E-13 -2.0793E-13 5.4098E-15 -9.8937E-15 -6.2823E-14 -1.2156E-12
-2.0793E-13 2.9071E-13 -1.0857E-14 1.9919E-14 1.5358E-13 2.4513E-12
5.4098E-15 -1.0857E-14 3.0130E-13 -8.1312E-14 4.9688E-16 -1.0911E-13
-9.8937E-15 1.9919E-14 -8.1312E-14 3.2606E-14 1.8404E-15 1.9753E-13
-6.2823E-14 1.5358E-13 4.9688E-16 1.8404E-15 1.1901E-12 3.9555E-13
-1.2156E-12 2.4513E-12 -1.0911E-13 1.9753E-13 3.9555E-13 2.4147E-11
# lat0 lon0 xBary yBary zBary JD0
4.530420 -176.080714 0.419558 0.070784 -0.892198 2456716.099916
# Heliocentric elements and errors
Epoch: 2456716.5000 = 2014/02/28
Mean Anomaly: 51.32374 +/- 0.076
Argument of Peri: 348.04932 +/- 0.096
Long of Asc Node: 136.59374 +/- 0.003
Inclination: 6.07704 +/- 0.000
Eccentricity: 0.07932846 +/- 0.0002
Semi-Major Axis: 44.25835002 +/- 0.0086
Time of Perihelion: 2441384.2106 +/- 23.2
Perihelion: 40.74740342 +/- 0.0124
Aphelion: 47.76929662 +/- 0.0133
Period (y) 294.4429 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.04866685 +/- 0.0019
Ecliptic Y -2.45871775 +/- 0.0001
Ecliptic Z 3.26638748 +/- 0.0001
Ecliptic XDOT -0.00000297 +/- 0.0000
Ecliptic YDOT -0.00269797 +/- 0.0000
Ecliptic ZDOT 0.00020889 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.24691020 +/- 0.0018
Geocenter to KBO 41.35139314 +/- 0.0019
# Hcoef: 9.05
The following table shows the complete astrometric record for 17GU36. 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 (17GU36) followed by the observatory code and reference code for the source of the astrometry.
2014 02 27.599138 12 21 34.94 +02 36 00.8 17GU36 T09 C~86vM 2014 02 27.604633 12 21 34.93 +02 36 01.0 17GU36 T09 C~86vM 2014 02 27.621003 12 21 34.87 +02 36 01.7 17GU36 T09 C~86vM 2014 02 27.632392 12 21 34.83 +02 36 02.1 17GU36 T09 C~86vM 2016 04 04.489312 12 29 18.81 +01 59 49.0 17GU36 T09 C~86vM 2017 01 30.640269 12 38 16.83 +01 03 36.9 17GU36 T09 C~86vM 2017 02 23.55566 12 37 13.07 +01 13 02.6 25.5r 17GU36 T09 C~86vM 2017 02 23.58678 12 37 12.95 +01 13 03.6 25.4r 17GU36 T09 C~86vM 2017 02 23.58888 12 37 12.93 +01 13 03.7 25.5r 17GU36 T09 C~86vM 2017 02 23.62075 12 37 12.82 +01 13 04.4 25.0r 17GU36 T09 C~86vM 2017 04 02.38545 12 34 37.52 +01 31 34.4 25.2r 17GU36 T09 C~86vM 2017 04 02.45608 12 34 37.19 +01 31 36.6 25.0r 17GU36 T09 C~86vM 2017 04 02.48785 12 34 37.05 +01 31 37.4 25.0r 17GU36 T09 C~86vM 2019 04 03.426512 12 44 48.31 +00 37 47.1 17GU36 T09 C~86vM 2019 04 03.46156 12 44 48.13 +00 37 47.9 25.1i 17GU36 T09 C~8COx 2019 04 03.482982 12 44 48.05 +00 37 48.7 17GU36 T09 C~86vM
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 -0.19 0.00 -0.18
2 0.0000 0.00 -0.02 0.00 -0.14
3 0.0001 0.00 0.04 0.00 0.08
4 0.0001 0.00 0.11 0.00 0.15
5 2.0996 0.00 0.10 0.00 0.02
6 2.9241 0.00 0.11 0.00 0.09
7 2.9896 0.00 0.20 0.00 -0.03
8 2.9897 0.00 0.04 0.00 0.11
9 2.9897 0.00 -0.15 0.00 0.15
10 2.9898 0.00 -0.12 0.00 -0.02
11 3.0932 0.00 0.06 0.00 -0.09
12 3.0934 0.00 -0.13 0.00 0.08
13 3.0935 0.00 -0.09 0.00 -0.03
14 5.0947 0.00 0.13 0.00 0.03
15 5.0948 0.00 -0.21 0.00 -0.18
16 5.0948 0.00 0.04 0.00 0.01
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.
17GU36 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.948 43.948 43.948 ecceobj 0.075 0.075 0.075 incobj 6.090 6.090 6.090 qmin 39.799 39.798 39.805 qmax 48.763 48.779 48.727 amean 44.150 44.150 44.150 amin 43.789 43.794 43.789 amax 44.528 44.529 44.532 emean 0.080 0.080 0.080 emin 0.066 0.066 0.066 emax 0.096 0.096 0.095 imean 5.082 5.082 5.082 imin 4.471 4.471 4.471 imax 5.781 5.780 5.781 excite_mean 0.119 0.119 0.119 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 181.2 181.0 181.1 kozaiamp 180.0 179.9 180.0