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: 15GJ58
# Created Wed May 8 01:17:05 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 2.25y
# First observation: 2015/02/17
# Last observation: 2017/05/18
Preliminary a, adot, b, bdot, g, gdot:
-0.000081 0.022933 0.000005 -0.001176 0.023450 0.000000
# Chi-squared of fit: 6.31 DOF: 62 RMS: 0.08
# Min/Max residuals: -0.21 0.22
# Exact a, adot, b, bdot, g, gdot:
1.547693E-05 2.278815E-02 -7.648442E-07 -1.167275E-03 2.343188E-02 -2.096178E-03
# Covariance matrix:
1.7417E-13 -2.3595E-14 3.2015E-16 -4.3147E-15 1.1479E-13 2.3156E-12
-2.3595E-14 2.9443E-13 2.4139E-15 -1.5758E-14 2.0840E-13 8.2297E-12
3.2015E-16 2.4139E-15 1.1947E-13 -9.3459E-14 2.0249E-15 1.2814E-13
-4.3147E-15 -1.5758E-14 -9.3459E-14 1.1483E-13 -1.5975E-14 -7.6905E-13
1.1479E-13 2.0840E-13 2.0249E-15 -1.5975E-14 2.8281E-13 8.4205E-12
2.3156E-12 8.2297E-12 1.2814E-13 -7.6905E-13 8.4205E-12 3.9977E-10
# lat0 lon0 xBary yBary zBary JD0
2.095938 -155.660886 0.817123 0.020275 -0.550183 2457071.085238
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 300.93974 +/- 0.068
Argument of Peri: 216.07063 +/- 0.148
Long of Asc Node: 58.73160 +/- 0.008
Inclination: 3.56135 +/- 0.001
Eccentricity: 0.11885313 +/- 0.0009
Semi-Major Axis: 45.50215127 +/- 0.0099
Time of Perihelion: 2475462.9332 +/- 20.3
Perihelion: 40.09407812 +/- 0.0401
Aphelion: 50.91022443 +/- 0.0406
Period (y) 306.9418 +/- 0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.69899925 +/- 0.0009
Ecliptic Y -17.05934926 +/- 0.0004
Ecliptic Z 1.56078627 +/- 0.0000
Ecliptic XDOT 0.00131218 +/- 0.0000
Ecliptic YDOT -0.00233274 +/- 0.0000
Ecliptic ZDOT -0.00014516 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.23734488 +/- 0.0008
Geocenter to KBO 42.67690364 +/- 0.0010
# Hcoef: 8.23
The following table shows the complete astrometric record for 15GJ58. 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 (15GJ58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.58446 13 33 15.745 -07 29 07.50 24.5r 15GJ58 568 C~2nvZ 2015 02 17.62541 13 33 15.655 -07 29 06.98 24.3r 15GJ58 568 C~2nvZ 2015 02 20.61856 13 33 09.188 -07 28 23.13 24.1r 15GJ58 568 C~2nvZ 2015 03 18.56291 13 31 48.020 -07 19 51.21 24.5r 15GJ58 568 C~2nvZ 2015 03 18.60407 13 31 47.854 -07 19 50.29 24.6r 15GJ58 568 C~2nvZ 2015 04 11.50134 13 30 07.180 -07 09 55.08 24.5r 15GJ58 568 C~2nvZ 2015 04 13.36562 13 29 58.930 -07 09 07.57 24.5r 15GJ58 568 C~2nvZ 2015 04 13.40656 13 29 58.733 -07 09 06.59 24.6r 15GJ58 568 C~2nvZ 2015 04 13.50913 13 29 58.273 -07 09 03.82 24.4r 15GJ58 568 C~2nvZ 2015 04 19.40635 13 29 32.121 -07 06 34.46 24.8r 15GJ58 568 C~2nvZ 2015 05 18.32905 13 27 33.674 -06 55 46.01 24.0r 15GJ58 568 C~2nvZ 2015 06 20.27906 13 26 09.607 -06 49 10.18 24.5r 15GJ58 568 C~2nvZ 2015 06 20.31989 13 26 09.547 -06 49 10.10 24.9r 15GJ58 568 C~2nvZ 2015 07 20.26893 13 26 05.512 -06 50 38.05 24.4r 15GJ58 568 C~2nvZ 2016 02 04.56733 13 38 24.163 -08 03 47.15 24.9w 15GJ58 568 C~2nvZ 2016 02 10.55526 13 38 17.617 -08 02 56.26 24.7w 15GJ58 568 C~2nvZ 2016 02 10.60492 13 38 17.545 -08 02 55.34 25.0w 15GJ58 568 C~2nvZ 2016 02 11.57713 13 38 16.186 -08 02 45.63 24.8w 15GJ58 568 C~2nvZ 2016 03 11.55250 13 37 02.686 -07 54 52.05 24.7w 15GJ58 568 C~2nvZ 2016 03 12.47618 13 36 59.460 -07 54 32.34 24.8w 15GJ58 568 C~2nvZ 2016 04 03.43722 13 35 31.567 -07 45 51.16 24.5w 15GJ58 568 C~2nvZ 2016 04 09.41701 13 35 05.306 -07 43 19.92 24.3w 15GJ58 568 C~2nvZ 2016 05 02.32746 13 33 24.607 -07 33 56.53 25.1w 15GJ58 568 C~2nvZ 2016 05 06.33724 13 33 07.899 -07 32 26.18 24.6w 15GJ58 568 C~2nvZ 2016 05 28.29624 13 31 48.178 -07 25 31.77 25.0w 15GJ58 568 C~2nvZ 2016 05 28.30839 13 31 48.139 -07 25 31.62 24.8w 15GJ58 568 C~2nvZ 2016 05 29.31531 13 31 45.090 -07 25 16.54 24.9w 15GJ58 568 C~2nvZ 2016 06 04.37369 13 31 28.105 -07 23 55.11 24.6w 15GJ58 568 C~2nvZ 2016 06 27.33366 13 30 47.819 -07 21 16.15 15GJ58 568 C~2nvZ 2016 06 27.34232 13 30 47.806 -07 21 16.39 26.3w 15GJ58 568 C~2nvZ 2016 07 07.32400 13 30 43.452 -07 21 27.39 24.9w 15GJ58 568 C~2nvZ 2016 07 07.33209 13 30 43.444 -07 21 27.37 25.1w 15GJ58 568 C~2nvZ 2017 03 29.46871 13 40 48.506 -08 20 47.03 24.6w 15GJ58 568 C~2nvZ 2017 05 18.26658 13 37 15.554 -08 01 14.19 24.4w 15GJ58 568 C~2nvZ
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 -0.02 0.00 -0.00
2 0.0001 -1.44 -0.04 -0.01 -0.07
3 0.0083 -106.99 0.00 5.65 0.01
4 0.0793 -1417.97 0.04 40.22 0.01
5 0.0795 -1420.61 -0.01 40.17 -0.06
6 0.1449 -3032.75 0.01 44.52 0.03
7 0.1500 -3164.44 0.12 43.63 -0.01
8 0.1501 -3167.53 -0.02 43.46 -0.13
9 0.1504 -3174.91 -0.03 43.53 0.03
10 0.1665 -3591.92 -0.07 39.45 0.09
11 0.2457 -5471.12 -0.11 -6.44 0.05
12 0.3359 -6781.95 0.02 -100.26 0.06
13 0.3360 -6782.81 0.05 -100.51 -0.05
14 0.4180 -6806.22 0.03 -204.49 0.01
15 0.9637 5027.31 0.06 -267.78 0.05
16 0.9801 4918.19 0.10 -255.62 -0.17
17 0.9802 4916.86 -0.06 -255.15 0.22
18 0.9829 4894.51 -0.02 -253.42 -0.00
19 1.0622 3704.73 -0.21 -208.63 -0.04
20 1.0647 3652.89 0.06 -207.69 -0.04
21 1.1249 2246.41 -0.02 -197.54 0.01
22 1.1412 1827.77 0.06 -198.94 -0.00
23 1.2040 228.31 -0.00 -220.87 0.18
24 1.2149 -35.97 0.09 -227.58 0.02
25 1.2750 -1291.03 0.06 -275.82 -0.00
26 1.2751 -1291.63 0.06 -275.89 -0.04
27 1.2778 -1339.35 0.01 -278.47 0.05
28 1.2944 -1604.28 0.05 -295.28 0.01
29 1.3573 -2220.17 -0.06 -367.13 0.16
30 1.3573 -2220.26 -0.04 -367.42 -0.10
31 1.3846 -2276.49 0.03 -401.42 -0.14
32 1.3847 -2276.61 -0.10 -401.45 -0.14
33 2.1106 7396.33 0.04 -442.83 -0.05
34 2.2469 4021.80 -0.07 -495.23 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.
15GJ58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.068 45.091 45.045 ecceobj 0.118 0.120 0.115 incobj 3.568 3.569 3.568 qmin 39.436 39.340 39.525 qmax 51.646 51.753 51.507 amean 45.382 45.406 45.359 amin 45.006 45.031 44.978 amax 45.797 45.821 45.775 emean 0.114 0.116 0.112 emin 0.099 0.101 0.097 emax 0.128 0.130 0.126 imean 2.221 2.218 2.225 imin 1.579 1.570 1.583 imax 2.800 2.800 2.800 excite_mean 0.121 0.123 0.119 fracstop 1.000 1.000 1.000 cjmean 3.101 3.100 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 183.9 183.8 184.0 kozaiamp 180.0 180.0 179.9