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: 15GU58
# Created Sun Nov 24 02:10:18 2024
# Orbit generated from Bernstein formalism
# Fitting 36 observations of 36
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000087 0.019265 0.000003 -0.000495 0.021532 0.000000
# Chi-squared of fit: 2.76 DOF: 66 RMS: 0.05
# Min/Max residuals: -0.13 0.17
# Exact a, adot, b, bdot, g, gdot:
1.377278E-05 1.915354E-02 -5.357331E-07 -4.920490E-04 2.155172E-02 -6.456906E-04
# Covariance matrix:
1.6436E-13 -1.0726E-14 -5.3113E-16 -1.5876E-15 1.2048E-13 2.0742E-12
-1.0726E-14 2.4028E-13 2.9588E-16 -5.9564E-15 1.5722E-13 7.5742E-12
-5.3113E-16 2.9588E-16 8.9202E-14 -6.4305E-14 -4.4116E-16 2.0378E-14
-1.5876E-15 -5.9564E-15 -6.4305E-14 8.4999E-14 -5.4794E-15 -2.9448E-13
1.2048E-13 1.5722E-13 -4.4116E-16 -5.4794E-15 2.3652E-13 7.0323E-12
2.0742E-12 7.5742E-12 2.0378E-14 -2.9448E-13 7.0323E-12 3.7394E-10
# lat0 lon0 xBary yBary zBary JD0
2.376575 -154.423011 0.828749 0.022236 -0.532431 2457071.093388
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 223.60765 +/- 0.565
Argument of Peri: 263.28784 +/- 0.561
Long of Asc Node: 83.16246 +/- 0.015
Inclination: 2.75157 +/- 0.000
Eccentricity: 0.07477662 +/- 0.0006
Semi-Major Axis: 44.42775742 +/- 0.0044
Time of Perihelion: 2498050.0818 +/- 169.7
Perihelion: 41.10559968 +/- 0.0272
Aphelion: 47.74991516 +/- 0.0273
Period (y) 296.1350 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.65829650 +/- 0.0009
Ecliptic Y -19.49724919 +/- 0.0004
Ecliptic Z 1.92405461 +/- 0.0000
Ecliptic XDOT 0.00111840 +/- 0.0000
Ecliptic YDOT -0.00216606 +/- 0.0000
Ecliptic ZDOT -0.00006576 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.94225146 +/- 0.0009
Geocenter to KBO 46.40000604 +/- 0.0010
# Hcoef: 6.73
The following table shows the complete astrometric record for 15GU58. 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 (15GU58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.59261 13 38 19.423 -07 40 26.44 23.4r 15GU58 568 C~2nvb 2015 02 17.63360 13 38 19.340 -07 40 25.91 23.2r 15GU58 568 C~2nvb 2015 02 20.62674 13 38 13.492 -07 39 44.48 23.4r 15GU58 568 C~2nvb 2015 03 18.57107 13 36 59.230 -07 31 43.52 23.3r 15GU58 568 C~2nvb 2015 03 18.61845 13 36 59.059 -07 31 42.50 23.3r 15GU58 568 C~2nvb 2015 03 20.57526 13 36 52.050 -07 30 59.22 23.3r 15GU58 568 C~2nvb 2015 04 11.50958 13 35 25.833 -07 22 24.90 23.4r 15GU58 568 C~2nvb 2015 04 13.37381 13 35 18.131 -07 21 40.21 23.4r 15GU58 568 C~2nvb 2015 04 13.41479 13 35 17.959 -07 21 39.28 23.4r 15GU58 568 C~2nvb 2015 04 13.51735 13 35 17.525 -07 21 36.82 23.4r 15GU58 568 C~2nvb 2015 04 19.41451 13 34 53.126 -07 19 16.55 23.3r 15GU58 568 C~2nvb 2015 04 19.53152 13 34 52.625 -07 19 13.78 23.2r 15GU58 568 C~2nvb 2015 04 19.54875 13 34 52.553 -07 19 13.15 23.2r 15GU58 568 C~2nvb 2015 05 18.33721 13 33 01.400 -07 09 02.76 23.4r 15GU58 568 C~2nvb 2015 06 20.28725 13 31 39.238 -07 02 32.42 23.5r 15GU58 568 C~2nvb 2015 06 20.32802 13 31 39.175 -07 02 32.21 23.5r 15GU58 568 C~2nvb 2015 06 22.33199 13 31 36.465 -07 02 22.93 23.5r 15GU58 568 C~2nvb 2015 07 14.28422 13 31 26.619 -07 02 41.35 23.4r 15GU58 568 C~2nvb 2015 07 20.27721 13 31 30.442 -07 03 25.06 23.5r 15GU58 568 C~2nvb 2016 02 04.58367 13 42 42.300 -08 08 03.13 23.7w 15GU58 568 C~2nvb 2016 02 10.57151 13 42 36.473 -08 07 12.81 23.6w 15GU58 568 C~2nvb 2016 02 10.61301 13 42 36.422 -08 07 12.43 23.7w 15GU58 568 C~2nvb 2016 03 11.56297 13 41 28.119 -07 59 32.65 23.9w 15GU58 568 C~2nvb 2016 04 03.45339 13 40 03.965 -07 51 04.43 23.6w 15GU58 568 C~2nvb 2016 04 09.43453 13 39 39.586 -07 48 42.46 23.5w 15GU58 568 C~2nvb 2016 05 01.46152 13 38 09.054 -07 40 12.46 23.6w 15GU58 568 C~2nvb 2016 05 02.33557 13 38 05.592 -07 39 53.39 23.6w 15GU58 568 C~2nvb 2016 05 07.33893 13 37 46.060 -07 38 07.44 23.3w 15GU58 568 C~2nvb 2016 05 29.33959 13 36 31.186 -07 31 38.97 23.7w 15GU58 568 C~2nvb 2016 06 04.40200 13 36 14.771 -07 30 19.98 23.6w 15GU58 568 C~2nvb 2016 06 27.33817 13 35 34.457 -07 27 37.43 23.9w 15GU58 568 C~2nvb 2016 07 07.32804 13 35 28.897 -07 27 39.54 23.8w 15GU58 568 C~2nvb 2017 03 29.51368 13 44 33.936 -08 18 43.68 23.6w 15GU58 568 C~2nvb 2017 03 30.48302 13 44 30.156 -08 18 21.53 15GU58 568 C~2nvb 2017 03 30.48771 13 44 30.136 -08 18 21.39 15GU58 568 C~2nvb 2017 06 24.30392 13 39 43.545 -07 53 15.34 23.9w 15GU58 568 C~2nvb
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 0.06 0.00 0.04
2 0.0001 -1.34 0.00 0.05 -0.00
3 0.0083 -97.38 0.03 7.19 -0.01
4 0.0793 -1300.80 0.02 55.28 -0.02
5 0.0795 -1303.54 0.03 55.30 -0.04
6 0.0848 -1416.37 -0.02 57.82 0.05
7 0.1449 -2798.10 0.06 71.27 0.01
8 0.1500 -2921.11 -0.10 71.24 -0.02
9 0.1501 -2923.83 -0.07 71.17 -0.07
10 0.1504 -2930.74 -0.10 71.12 -0.08
11 0.1665 -3319.98 0.07 69.74 0.01
12 0.1668 -3327.93 -0.05 69.61 -0.03
13 0.1669 -3329.16 -0.13 69.80 0.17
14 0.2457 -5092.62 0.02 35.60 -0.05
15 0.3359 -6374.69 0.07 -47.64 0.01
16 0.3360 -6375.64 0.04 -47.79 -0.00
17 0.3415 -6416.62 0.04 -53.90 0.00
18 0.4016 -6546.44 -0.03 -124.67 0.07
19 0.4180 -6477.42 0.05 -144.55 0.02
20 0.9637 4240.94 -0.04 -135.83 0.01
21 0.9801 4142.07 0.01 -119.99 -0.00
22 0.9802 4141.22 0.05 -119.91 -0.01
23 1.0622 3028.95 0.04 -56.10 -0.04
24 1.1249 1679.35 0.01 -33.05 -0.01
25 1.1413 1290.24 0.02 -31.51 0.03
26 1.2016 -148.75 -0.09 -42.78 -0.06
27 1.2040 -203.62 -0.03 -43.64 0.00
28 1.2176 -512.66 0.09 -50.08 -0.08
29 1.2779 -1691.08 0.01 -91.82 0.00
30 1.2945 -1947.23 -0.02 -106.86 0.01
31 1.3573 -2564.95 -0.02 -173.26 0.03
32 1.3846 -2641.23 0.00 -205.29 0.03
33 2.1107 6018.85 0.00 -138.62 0.06
34 2.1133 5958.48 0.01 -138.06 -0.03
35 2.1133 5958.16 -0.01 -138.03 -0.00
36 2.3483 1443.69 -0.02 -264.71 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.
15GU58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.043 44.054 44.032 ecceobj 0.083 0.085 0.082 incobj 2.752 2.752 2.752 qmin 39.919 39.870 39.944 qmax 49.046 49.050 48.983 amean 44.326 44.339 44.318 amin 43.964 43.989 43.972 amax 44.708 44.714 44.704 emean 0.080 0.082 0.080 emin 0.065 0.065 0.064 emax 0.097 0.097 0.096 imean 1.080 1.078 1.084 imin 0.318 0.317 0.320 imax 1.623 1.623 1.633 excite_mean 0.083 0.084 0.082 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 178.5 178.4 177.2 kozaiamp 180.0 180.0 180.0