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: 15GF56
# Created Wed May 8 01:17:03 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 35
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000140 0.023401 0.000001 -0.000672 0.023904 0.000000
# Chi-squared of fit: 6.42 DOF: 62 RMS: 0.08
# Min/Max residuals: -0.26 0.21
# Exact a, adot, b, bdot, g, gdot:
1.535072E-05 2.326310E-02 -4.425622E-07 -6.684800E-04 2.396959E-02 3.121503E-04
# Covariance matrix:
1.7603E-13 -8.7958E-15 4.0733E-16 -2.5651E-15 1.4063E-13 2.2518E-12
-8.7958E-15 3.0439E-13 1.6819E-15 -9.2241E-15 1.8832E-13 8.0161E-12
4.0733E-16 1.6819E-15 9.2594E-14 -7.5331E-14 1.4396E-15 7.2384E-14
-2.5651E-15 -9.2241E-15 -7.5331E-14 1.1432E-13 -8.3070E-15 -3.9400E-13
1.4063E-13 1.8832E-13 1.4396E-15 -8.3070E-15 2.7933E-13 7.2472E-12
2.2518E-12 8.0161E-12 7.2384E-14 -3.9400E-13 7.2472E-12 3.4220E-10
# lat0 lon0 xBary yBary zBary JD0
0.209678 -157.323912 0.801807 0.002245 -0.572619 2457070.986558
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 345.37293 +/- 3.175
Argument of Peri: 187.83323 +/- 3.266
Long of Asc Node: 28.78083 +/- 0.003
Inclination: 1.65095 +/- 0.001
Eccentricity: 0.01370092 +/- 0.0002
Semi-Major Axis: 42.87013718 +/- 0.0027
Time of Perihelion: 2461236.1755 +/- 904.3
Perihelion: 42.28277688 +/- 0.0088
Aphelion: 43.45749748 +/- 0.0088
Period (y) 280.6988 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.33456605 +/- 0.0009
Ecliptic Y -15.56457280 +/- 0.0003
Ecliptic Z 0.15264947 +/- 0.0000
Ecliptic XDOT 0.00098758 +/- 0.0000
Ecliptic YDOT -0.00247118 +/- 0.0000
Ecliptic ZDOT -0.00007613 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.30233226 +/- 0.0008
Geocenter to KBO 41.71953546 +/- 0.0009
# Hcoef: 8.08
The following table shows the complete astrometric record for 15GF56. 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 (15GF56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.48578 13 24 12.638 -08 37 35.44 24.3r 15GF56 568 C~2nvR 2015 02 17.52702 13 24 12.541 -08 37 34.90 24.2r 15GF56 568 C~2nvR 2015 02 20.45766 13 24 05.571 -08 36 53.81 24.3r 15GF56 568 C~2nvR 2015 03 17.43316 13 22 43.028 -08 28 48.49 24.7r 15GF56 568 C~2nvR 2015 03 18.45231 13 22 38.909 -08 28 23.93 25.3r 15GF56 568 C~2nvR 2015 03 18.50553 13 22 38.706 -08 28 23.18 25.0r 15GF56 568 C~2nvR 2015 03 20.50715 13 22 30.577 -08 27 35.47 24.8r 15GF56 568 C~2nvR 2015 04 11.39801 13 20 54.578 -08 18 10.48 24.0r 15GF56 568 C~2nvR 2015 04 12.35069 13 20 50.256 -08 17 45.05 23.9r 15GF56 568 C~2nvR 2015 04 12.39167 13 20 50.084 -08 17 44.03 23.8r 15GF56 568 C~2nvR 2015 04 12.43732 13 20 49.857 -08 17 42.84 24.0r 15GF56 568 C~2nvR 2015 04 14.44843 13 20 40.737 -08 16 49.08 23.9r 15GF56 568 C~2nvR 2015 04 16.38638 13 20 31.965 -08 15 57.53 24.1r 15GF56 568 C~2nvR 2015 04 18.40224 13 20 22.862 -08 15 03.89 23.7r 15GF56 568 C~2nvR 2015 04 18.45015 13 20 22.648 -08 15 02.82 23.9r 15GF56 568 C~2nvR 2015 05 14.29473 13 18 34.254 -08 04 26.74 23.5r 15GF56 568 C~2nvR 2015 05 16.24826 13 18 27.096 -08 03 44.81 24.2r 15GF56 568 C~2nvR 2015 06 22.26586 13 16 57.422 -07 55 09.83 24.4r 15GF56 568 C~2nvR 2015 07 12.25999 13 16 53.854 -07 55 02.49 24.5r 15GF56 568 C~2nvR 2015 07 19.29173 13 17 00.796 -07 55 48.87 24.5r 15GF56 568 C~2nvR 2016 02 04.55925 13 29 31.926 -09 11 23.54 24.5w 15GF56 568 C~2nvR 2016 02 10.54717 13 29 24.061 -09 10 38.37 24.2w 15GF56 568 C~2nvR 2016 02 10.59675 13 29 23.973 -09 10 37.86 24.2w 15GF56 568 C~2nvR 2016 03 11.54434 13 28 02.656 -09 02 46.70 24.7w 15GF56 568 C~2nvR 2016 04 03.42913 13 26 27.749 -08 53 35.18 24.6w 15GF56 568 C~2nvR 2016 04 09.40893 13 26 00.784 -08 50 58.24 24.8w 15GF56 568 C~2nvR 2016 05 01.36049 13 24 22.788 -08 41 28.28 24.4w 15GF56 568 C~2nvR 2016 05 02.30311 13 24 18.774 -08 41 05.08 24.4w 15GF56 568 C~2nvR 2016 05 06.31289 13 24 02.060 -08 39 28.02 24.4w 15GF56 568 C~2nvR 2016 05 28.28005 13 22 43.458 -08 31 53.30 25.1w 15GF56 568 C~2nvR 2016 06 04.36154 13 22 24.170 -08 30 02.84 24.6w 15GF56 568 C~2nvR 2016 06 27.28890 13 21 47.658 -08 26 39.64 24.7w 15GF56 568 C~2nvR 2016 07 07.29150 13 21 45.346 -08 26 32.32 24.9w 15GF56 568 C~2nvR 2017 03 28.57437 13 31 56.267 -09 28 08.52 15GF56 568 C~2nvR 2017 03 29.43565 13 31 52.546 -09 27 47.11 24.6w 15GF56 568 C~2nvR
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 -0.00 0.00 0.00
2 0.0001 -1.54 -0.01 -0.03 -0.01
3 0.0081 -112.77 0.03 -0.26 0.12
4 0.0765 -1429.86 0.03 -4.84 0.11
5 0.0793 -1495.72 ( -0.67) -4.78 ( 0.42)
6 0.0795 -1498.80 -0.26 -5.21 0.04
7 0.0849 -1628.50 0.01 -5.82 -0.06
8 0.1449 -3161.25 0.02 -12.53 0.01
9 0.1475 -3230.27 -0.05 -12.88 -0.00
10 0.1476 -3233.02 0.21 -12.88 0.03
11 0.1477 -3236.60 0.00 -13.04 -0.09
12 0.1532 -3382.29 -0.02 -13.69 0.03
13 0.1585 -3522.37 -0.01 -14.49 -0.03
14 0.1640 -3667.80 -0.04 -15.20 0.09
15 0.1642 -3671.14 0.12 -15.39 -0.06
16 0.2349 -5402.52 -0.10 -27.46 -0.03
17 0.2403 -5516.88 0.04 -28.40 0.05
18 0.3416 -6946.15 -0.04 -50.59 -0.02
19 0.3964 -6998.09 0.06 -63.70 -0.20
20 0.4156 -6884.96 -0.01 -67.96 0.09
21 0.9639 5147.14 -0.08 -135.88 -0.09
22 0.9803 5022.15 0.17 -136.73 -0.06
23 0.9805 5020.75 0.07 -136.73 -0.03
24 1.0624 3726.94 -0.08 -142.40 0.15
25 1.1251 2216.15 -0.04 -149.24 -0.02
26 1.1415 1786.76 0.02 -151.29 0.06
27 1.2016 226.19 0.03 -160.34 0.07
28 1.2042 162.31 -0.10 -160.89 -0.07
29 1.2151 -103.86 0.02 -162.78 -0.06
30 1.2753 -1355.16 -0.12 -174.00 -0.04
31 1.2947 -1661.86 -0.02 -177.99 -0.04
32 1.3574 -2240.32 0.03 -191.20 0.00
33 1.3848 -2274.89 0.10 -197.19 -0.04
34 2.1084 7505.62 -0.00 -286.51 0.06
35 2.1107 7446.48 -0.00 -286.75 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.
15GF56 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.478 42.486 42.470 ecceobj 0.007 0.006 0.007 incobj 1.658 1.658 1.658 qmin 41.540 41.492 41.547 qmax 44.118 44.172 44.095 amean 42.742 42.750 42.733 amin 42.415 42.430 42.416 amax 43.064 43.085 43.053 emean 0.012 0.012 0.012 emin 0.000 0.000 0.000 emax 0.025 0.025 0.024 imean 1.764 1.759 1.769 imin 0.487 0.491 0.482 imax 2.509 2.505 2.512 excite_mean 0.034 0.034 0.034 fracstop 1.000 1.000 1.000 cjmean 3.085 3.085 3.085 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 181.9 182.0 182.0 kozaiamp 180.0 179.9 179.9