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: 15GA59
# Created Wed May 8 01:17:06 2024
# Orbit generated from Bernstein formalism
# Fitting 26 observations of 26
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000114 0.025142 0.000006 -0.001551 0.024620 0.000000
# Chi-squared of fit: 10.44 DOF: 46 RMS: 0.11
# Min/Max residuals: -0.23 0.26
# Exact a, adot, b, bdot, g, gdot:
1.569055E-05 2.496907E-02 -2.430058E-07 -1.538994E-03 2.464884E-02 -1.252009E-03
# Covariance matrix:
2.1302E-13 -2.3128E-14 2.6041E-16 -6.1570E-15 1.5087E-13 2.6357E-12
-2.3128E-14 4.1857E-13 3.4120E-15 -2.5222E-14 2.2662E-13 1.0616E-11
2.6041E-16 3.4120E-15 1.1826E-13 -1.0333E-13 2.1707E-15 1.5531E-13
-6.1570E-15 -2.5222E-14 -1.0333E-13 1.7293E-13 -2.0820E-14 -1.1005E-12
1.5087E-13 2.2662E-13 2.1707E-15 -2.0820E-14 2.9485E-13 8.8129E-12
2.6357E-12 1.0616E-11 1.5531E-13 -1.1005E-12 8.8129E-12 4.6269E-10
# lat0 lon0 xBary yBary zBary JD0
2.041341 -153.009991 0.841563 0.018390 -0.512089 2457071.101558
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 322.51166 +/- 0.278
Argument of Peri: 195.41607 +/- 0.372
Long of Asc Node: 55.78839 +/- 0.007
Inclination: 4.02881 +/- 0.001
Eccentricity: 0.10294760 +/- 0.0006
Semi-Major Axis: 44.53266630 +/- 0.0063
Time of Perihelion: 2468373.9284 +/- 83.8
Perihelion: 39.94813537 +/- 0.0290
Aphelion: 49.11719722 +/- 0.0293
Period (y) 297.1846 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.96954847 +/- 0.0008
Ecliptic Y -17.88295867 +/- 0.0004
Ecliptic Z 1.44511602 +/- 0.0000
Ecliptic XDOT 0.00137344 +/- 0.0000
Ecliptic YDOT -0.00241662 +/- 0.0000
Ecliptic ZDOT -0.00017570 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.09301748 +/- 0.0007
Geocenter to KBO 40.56985510 +/- 0.0009
# Hcoef: 8.81
The following table shows the complete astrometric record for 15GA59. 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 (15GA59) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.60078 13 43 09.448 -08 29 43.32 25.1r 15GA59 568 C~2nvc 2015 02 17.64179 13 43 09.361 -08 29 42.84 25.2r 15GA59 568 C~2nvc 2015 02 20.63493 13 43 03.252 -08 29 02.15 24.4r 15GA59 568 C~2nvc 2015 03 18.57924 13 41 42.592 -08 20 46.38 24.8r 15GA59 568 C~2nvc 2015 03 18.62665 13 41 42.409 -08 20 45.31 24.9r 15GA59 568 C~2nvc 2015 04 11.51839 13 39 58.419 -08 10 46.95 24.5r 15GA59 568 C~2nvc 2015 04 13.38199 13 39 49.760 -08 09 58.34 24.8r 15GA59 568 C~2nvc 2015 04 13.44320 13 39 49.480 -08 09 56.89 24.7r 15GA59 568 C~2nvc 2015 04 13.52553 13 39 49.097 -08 09 54.66 24.7r 15GA59 568 C~2nvc 2015 04 19.54045 13 39 21.033 -08 07 18.77 24.8r 15GA59 568 C~2nvc 2015 05 18.34540 13 37 15.065 -07 56 05.83 24.6r 15GA59 568 C~2nvc 2015 06 20.29539 13 35 41.379 -07 48 51.28 24.7r 15GA59 568 C~2nvc 2015 06 20.33619 13 35 41.289 -07 48 51.13 25.5r 15GA59 568 C~2nvc 2015 06 22.34024 13 35 38.202 -07 48 40.83 25.6r 15GA59 568 C~2nvc 2015 07 14.29246 13 35 26.871 -07 49 02.56 24.8r 15GA59 568 C~2nvc 2015 07 20.28549 13 35 31.210 -07 49 52.31 25.7r 15GA59 568 C~2nvc 2016 02 04.62240 13 48 43.380 -09 07 19.53 25.0w 15GA59 568 C~2nvc 2016 02 11.60562 13 48 36.929 -09 06 29.03 25.2w 15GA59 568 C~2nvc 2016 03 11.61299 13 47 25.939 -08 59 04.34 24.9w 15GA59 568 C~2nvc 2016 04 03.48173 13 45 52.870 -08 50 08.47 24.9w 15GA59 568 C~2nvc 2016 05 02.35180 13 43 39.444 -08 37 59.09 25.4w 15GA59 568 C~2nvc 2016 05 07.35515 13 43 17.226 -08 36 01.94 25.5w 15GA59 568 C~2nvc 2016 06 04.39796 13 41 32.836 -08 27 21.10 25.3w 15GA59 568 C~2nvc 2016 06 27.32960 13 40 46.133 -08 24 15.29 25.1w 15GA59 568 C~2nvc 2016 07 07.31994 13 40 39.437 -08 24 15.45 25.0w 15GA59 568 C~2nvc 2017 03 30.49709 13 51 34.977 -09 27 56.32 25.0w 15GA59 568 C~2nvc
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 0.07 0.00 -0.15
2 0.0001 -1.38 0.02 -0.01 -0.23
3 0.0083 -100.57 0.07 5.49 -0.09
4 0.0793 -1395.66 -0.06 38.74 -0.00
5 0.0795 -1398.57 0.03 38.76 -0.00
6 0.1449 -3054.34 0.08 41.72 -0.03
7 0.1500 -3191.82 -0.20 40.74 -0.03
8 0.1502 -3196.22 -0.01 40.59 -0.11
9 0.1504 -3202.33 0.06 40.62 0.01
10 0.1668 -3647.35 -0.20 35.81 -0.11
11 0.2457 -5636.12 -0.08 -12.55 0.13
12 0.3359 -7092.42 0.16 -111.85 0.26
13 0.3360 -7093.72 -0.09 -112.20 0.08
14 0.3415 -7140.26 0.15 -119.25 0.12
15 0.4016 -7289.48 0.04 -200.63 0.22
16 0.4180 -7211.25 -0.05 -223.61 0.01
17 0.9638 5430.30 -0.19 -342.43 0.22
18 0.9829 5322.98 0.11 -329.12 0.03
19 1.0623 4181.38 0.08 -287.12 -0.06
20 1.1249 2701.36 0.03 -277.69 -0.00
21 1.2040 593.00 0.12 -303.48 -0.05
22 1.2177 243.39 0.04 -312.13 0.07
23 1.2944 -1388.94 -0.22 -381.65 -0.09
24 1.3572 -2102.43 0.11 -457.46 -0.10
25 1.3846 -2195.09 -0.06 -493.36 0.02
26 2.1133 8246.95 -0.01 -600.25 -0.09
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.
15GA59 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.101 44.114 44.088 ecceobj 0.098 0.099 0.097 incobj 4.038 4.038 4.037 qmin 39.383 39.343 39.438 qmax 49.721 49.774 49.598 amean 44.405 44.419 44.392 amin 44.044 44.060 44.038 amax 44.794 44.797 44.778 emean 0.094 0.095 0.092 emin 0.077 0.079 0.076 emax 0.110 0.111 0.108 imean 2.649 2.641 2.654 imin 1.911 1.902 1.921 imax 3.307 3.308 3.307 excite_mean 0.104 0.105 0.103 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 189.8 190.4 189.4 kozaiamp 180.0 179.9 180.0