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: 15GP58
# Created Wed May 8 01:17:06 2024
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000097 0.018988 0.000002 -0.000702 0.021408 0.000000
# Chi-squared of fit: 4.77 DOF: 58 RMS: 0.07
# Min/Max residuals: -0.22 0.15
# Exact a, adot, b, bdot, g, gdot:
1.377817E-05 1.887439E-02 -8.720741E-07 -6.982587E-04 2.143127E-02 4.285001E-04
# Covariance matrix:
1.8583E-13 -1.7277E-14 -2.5875E-16 -2.8952E-15 1.4423E-13 2.7450E-12
-1.7277E-14 2.7558E-13 8.7020E-16 -9.2116E-15 1.7125E-13 8.5675E-12
-2.5875E-16 8.7020E-16 9.8100E-14 -7.9184E-14 2.2346E-16 5.3750E-14
-2.8952E-15 -9.2116E-15 -7.9184E-14 1.1965E-13 -9.1794E-15 -5.1190E-13
1.4423E-13 1.7125E-13 2.2346E-16 -9.1794E-15 2.7999E-13 8.6006E-12
2.7450E-12 8.5675E-12 5.3750E-14 -5.1190E-13 8.6006E-12 4.7557E-10
# lat0 lon0 xBary yBary zBary JD0
1.587910 -154.807175 0.825157 0.015059 -0.538229 2457071.093388
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 173.26843 +/- 0.896
Argument of Peri: 328.94910 +/- 0.897
Long of Asc Node: 61.09563 +/- 0.014
Inclination: 2.61235 +/- 0.001
Eccentricity: 0.06834282 +/- 0.0001
Semi-Major Axis: 44.20583643 +/- 0.0029
Time of Perihelion: 2512754.8413 +/- 267.1
Perihelion: 41.18468483 +/- 0.0052
Aphelion: 47.22698802 +/- 0.0054
Period (y) 293.9190 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.04743900 +/- 0.0010
Ecliptic Y -19.33679715 +/- 0.0005
Ecliptic Z 1.29296581 +/- 0.0000
Ecliptic XDOT 0.00097097 +/- 0.0000
Ecliptic YDOT -0.00221177 +/- 0.0000
Ecliptic ZDOT -0.00008756 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.20874378 +/- 0.0010
Geocenter to KBO 46.66079632 +/- 0.0012
# Hcoef: 7.09
The following table shows the complete astrometric record for 15GP58. 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 (15GP58) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.59261 13 35 43.366 -08 16 10.55 24.0r 15GP58 568 C~2nva 2015 02 17.63360 13 35 43.282 -08 16 10.02 23.7r 15GP58 568 C~2nva 2015 02 20.62674 13 35 37.291 -08 15 30.92 24.0r 15GP58 568 C~2nva 2015 03 18.57107 13 34 22.163 -08 07 46.78 23.9r 15GP58 568 C~2nva 2015 03 18.61845 13 34 21.987 -08 07 45.75 23.7r 15GP58 568 C~2nva 2015 03 20.57526 13 34 14.945 -08 07 03.45 23.8r 15GP58 568 C~2nva 2015 04 11.50958 13 32 48.629 -07 58 36.56 23.5r 15GP58 568 C~2nva 2015 04 13.37381 13 32 40.951 -07 57 52.31 23.6r 15GP58 568 C~2nva 2015 04 13.41479 13 32 40.773 -07 57 51.30 23.8r 15GP58 568 C~2nva 2015 04 13.51735 13 32 40.345 -07 57 48.83 23.7r 15GP58 568 C~2nva 2015 04 19.41451 13 32 16.022 -07 55 29.40 23.3r 15GP58 568 C~2nva 2015 04 19.53152 13 32 15.517 -07 55 26.82 23.4r 15GP58 568 C~2nva 2015 04 19.54875 13 32 15.450 -07 55 26.21 23.7r 15GP58 568 C~2nva 2015 05 18.33721 13 30 25.140 -07 45 12.21 23.9r 15GP58 568 C~2nva 2015 06 20.28725 13 29 04.510 -07 38 26.28 23.9r 15GP58 568 C~2nva 2015 06 20.32802 13 29 04.451 -07 38 26.02 24.0r 15GP58 568 C~2nva 2015 06 22.33199 13 29 01.842 -07 38 15.53 24.0r 15GP58 568 C~2nva 2015 07 14.28422 13 28 53.042 -07 38 19.32 23.9r 15GP58 568 C~2nva 2016 02 04.59812 13 40 02.258 -08 43 59.49 24.3w 15GP58 568 C~2nva 2016 02 10.61713 13 39 56.020 -08 43 13.91 24.1w 15GP58 568 C~2nva 2016 03 11.56702 13 38 46.444 -08 35 56.30 24.2w 15GP58 568 C~2nva 2016 03 11.60082 13 38 46.337 -08 35 55.64 24.1w 15GP58 568 C~2nva 2016 04 03.45744 13 37 22.011 -08 27 38.80 23.9w 15GP58 568 C~2nva 2016 04 09.43859 13 36 57.659 -08 25 18.53 23.9w 15GP58 568 C~2nva 2016 05 02.31935 13 35 24.239 -08 16 31.54 24.0w 15GP58 568 C~2nva 2016 05 06.32911 13 35 08.650 -08 15 05.69 23.9w 15GP58 568 C~2nva 2016 05 28.30028 13 33 53.858 -08 08 25.05 24.1w 15GP58 568 C~2nva 2016 06 04.37773 13 33 34.826 -08 06 48.22 24.1w 15GP58 568 C~2nva 2016 06 27.33366 13 32 55.648 -08 03 51.81 23.9w 15GP58 568 C~2nva 2016 07 07.32400 13 32 50.588 -08 03 47.13 24.1w 15GP58 568 C~2nva 2017 03 29.46871 13 41 46.954 -08 55 38.15 23.9w 15GP58 568 C~2nva 2017 03 29.49962 13 41 46.847 -08 55 37.25 24.0w 15GP58 568 C~2nva
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 0.03 0.00 0.07
2 0.0001 -1.35 -0.02 0.04 0.07
3 0.0083 -98.42 0.01 4.11 0.05
4 0.0793 -1306.28 0.03 30.21 -0.03
5 0.0795 -1309.09 -0.04 30.22 -0.04
6 0.0848 -1421.89 -0.05 31.49 0.06
7 0.1449 -2800.60 0.00 35.50 0.08
8 0.1500 -2922.96 -0.00 35.01 0.00
9 0.1501 -2925.79 -0.10 34.98 0.01
10 0.1504 -2932.61 -0.07 34.96 0.05
11 0.1665 -3320.01 0.13 32.64 0.03
12 0.1668 -3327.94 -0.01 32.29 -0.22
13 0.1669 -3329.08 -0.02 32.50 0.00
14 0.2457 -5079.99 0.08 3.54 0.04
15 0.3359 -6344.86 0.02 -58.88 -0.02
16 0.3360 -6345.77 0.01 -58.96 0.00
17 0.3415 -6385.73 0.04 -63.46 -0.02
18 0.4016 -6506.13 -0.08 -115.09 -0.20
19 0.9637 4185.02 0.00 -163.47 0.06
20 0.9802 4082.28 -0.04 -154.37 0.05
21 1.0622 2961.78 0.01 -119.38 -0.09
22 1.0623 2960.06 0.08 -119.33 -0.06
23 1.1249 1613.97 -0.00 -109.49 -0.04
24 1.1413 1226.36 -0.02 -109.89 -0.05
25 1.2039 -256.83 0.12 -122.85 0.11
26 1.2149 -503.61 -0.01 -127.11 0.02
27 1.2750 -1683.71 0.06 -158.69 -0.01
28 1.2944 -1982.19 -0.07 -171.65 -0.02
29 1.3573 -2588.33 -0.09 -219.88 0.09
30 1.3846 -2660.01 0.02 -242.99 -0.02
31 2.1105 5885.40 -0.08 -255.62 -0.13
32 2.1106 5883.60 0.06 -255.35 0.15
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.
15GP58 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.823 43.832 43.813 ecceobj 0.078 0.077 0.078 incobj 2.618 2.618 2.618 qmin 39.789 39.755 39.767 qmax 48.658 48.649 48.688 amean 44.099 44.107 44.088 amin 43.751 43.767 43.744 amax 44.475 44.475 44.477 emean 0.079 0.079 0.079 emin 0.062 0.062 0.062 emax 0.094 0.094 0.095 imean 1.296 1.301 1.291 imin 0.468 0.476 0.458 imax 1.917 1.916 1.916 excite_mean 0.082 0.082 0.083 fracstop 1.000 1.000 1.000 cjmean 3.094 3.095 3.094 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 172.3 171.6 173.1 kozaiamp 180.0 180.0 180.0