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: 15GL57
# Created Wed May 8 01:17:04 2024
# Orbit generated from Bernstein formalism
# Fitting 35 observations of 35
# Arc: 2.35y
# First observation: 2015/02/17
# Last observation: 2017/06/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000118 0.023123 0.000001 -0.000420 0.023727 0.000000
# Chi-squared of fit: 11.13 DOF: 64 RMS: 0.10
# Min/Max residuals: -0.25 0.27
# Exact a, adot, b, bdot, g, gdot:
1.588558E-05 2.306113E-02 -2.749349E-07 -4.194763E-04 2.379127E-02 6.361228E-04
# Covariance matrix:
2.0474E-13 1.0077E-15 1.1275E-16 -2.1553E-15 1.5808E-13 3.0982E-12
1.0077E-15 2.5357E-13 8.7316E-16 -5.2434E-15 1.6274E-13 7.1883E-12
1.1275E-16 8.7316E-16 9.3591E-14 -7.6218E-14 6.3747E-16 4.8511E-14
-2.1553E-15 -5.2434E-15 -7.6218E-14 1.1193E-13 -5.3141E-15 -2.7392E-13
1.5808E-13 1.6274E-13 6.3747E-16 -5.3141E-15 2.5660E-13 7.4294E-12
3.0982E-12 7.1883E-12 4.8511E-14 -2.7392E-13 7.4294E-12 3.7384E-10
# lat0 lon0 xBary yBary zBary JD0
0.715047 -153.691086 0.836212 0.006649 -0.521060 2457071.015468
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 30.18407 +/- 2.002
Argument of Peri: 114.11518 +/- 2.098
Long of Asc Node: 59.72037 +/- 0.021
Inclination: 1.24526 +/- 0.001
Eccentricity: 0.01960241 +/- 0.0005
Semi-Major Axis: 43.29323518 +/- 0.0027
Time of Perihelion: 2448346.7391 +/- 578.6
Perihelion: 42.44458326 +/- 0.0200
Aphelion: 44.14188710 +/- 0.0200
Period (y) 284.8645 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.51596299 +/- 0.0008
Ecliptic Y -18.10904543 +/- 0.0004
Ecliptic Z 0.52452928 +/- 0.0000
Ecliptic XDOT 0.00110640 +/- 0.0000
Ecliptic YDOT -0.00241722 +/- 0.0000
Ecliptic ZDOT -0.00004726 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.56397611 +/- 0.0007
Geocenter to KBO 42.03223193 +/- 0.0009
# Hcoef: 7.85
The following table shows the complete astrometric record for 15GL57. 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 (15GL57) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.51469 13 38 39.088 -09 29 15.65 23.7r 15GL57 568 C~2nvW 2015 02 20.48657 13 38 32.913 -09 28 38.19 24.1r 15GL57 568 C~2nvW 2015 03 18.49249 13 37 12.428 -09 20 42.21 24.1r 15GL57 568 C~2nvW 2015 03 18.53407 13 37 12.269 -09 20 41.28 24.6r 15GL57 568 C~2nvW 2015 03 20.53726 13 37 04.446 -09 19 55.67 24.0r 15GL57 568 C~2nvW 2015 04 11.47256 13 35 30.329 -09 10 50.92 24.0r 15GL57 568 C~2nvW 2015 04 12.37938 13 35 26.263 -09 10 27.50 24.0r 15GL57 568 C~2nvW 2015 04 12.42509 13 35 26.044 -09 10 26.15 24.2r 15GL57 568 C~2nvW 2015 04 12.46730 13 35 25.843 -09 10 25.51 24.1r 15GL57 568 C~2nvW 2015 04 18.43790 13 34 58.811 -09 07 50.25 24.5r 15GL57 568 C~2nvW 2015 04 18.48560 13 34 58.619 -09 07 49.04 24.2r 15GL57 568 C~2nvW 2015 05 16.28656 13 33 00.204 -08 56 37.26 23.9r 15GL57 568 C~2nvW 2015 05 17.24686 13 32 56.553 -08 56 16.82 24.0r 15GL57 568 C~2nvW 2015 05 25.38864 13 32 27.658 -08 53 35.81 23.8r 15GL57 568 C~2nvW 2015 05 25.44647 13 32 27.462 -08 53 34.62 24.2r 15GL57 568 C~2nvW 2015 06 21.33827 13 31 22.280 -08 47 44.28 24.3r 15GL57 568 C~2nvW 2015 06 22.29486 13 31 20.955 -08 47 37.80 24.2r 15GL57 568 C~2nvW 2015 07 12.28879 13 31 10.808 -08 47 04.30 24.1r 15GL57 568 C~2nvW 2015 07 15.27909 13 31 12.221 -08 47 16.49 23.9r 15GL57 568 C~2nvW 2015 07 19.27863 13 31 15.358 -08 47 40.14 24.4r 15GL57 568 C~2nvW 2016 02 04.61430 13 43 54.635 -10 00 56.51 24.5w 15GL57 568 C~2nvW 2016 02 11.59752 13 43 47.453 -10 00 10.60 24.5w 15GL57 568 C~2nvW 2016 03 11.60487 13 42 35.610 -09 53 05.83 23.8w 15GL57 568 C~2nvW 2016 04 03.47768 13 41 04.137 -09 44 20.97 24.5w 15GL57 568 C~2nvW 2016 04 09.45883 13 40 37.530 -09 41 49.41 24.3w 15GL57 568 C~2nvW 2016 05 01.46556 13 38 58.722 -09 32 31.24 24.4w 15GL57 568 C~2nvW 2016 05 02.33963 13 38 54.924 -09 32 09.99 23.9w 15GL57 568 C~2nvW 2016 05 07.34298 13 38 33.571 -09 30 10.42 24.2w 15GL57 568 C~2nvW 2016 05 28.31649 13 37 15.150 -09 22 56.50 24.0w 15GL57 568 C~2nvW 2016 05 29.32340 13 37 11.957 -09 22 39.27 24.4w 15GL57 568 C~2nvW 2016 06 04.38582 13 36 54.103 -09 21 02.76 24.7w 15GL57 568 C~2nvW 2016 06 27.31141 13 36 10.732 -09 17 18.93 24.5w 15GL57 568 C~2nvW 2016 07 07.30770 13 36 05.111 -09 16 59.19 24.4w 15GL57 568 C~2nvW 2017 02 27.64150 13 48 13.807 -10 26 32.08 15GL57 568 C~2nvW 2017 06 25.27303 13 41 10.671 -09 47 28.81 24.4w 15GL57 568 C~2nvW
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 -0.12 0.00 -0.00
2 0.0081 -98.72 0.03 1.89 -0.06
3 0.0793 -1381.30 -0.08 14.39 -0.02
4 0.0795 -1383.83 -0.01 14.41 -0.00
5 0.0849 -1508.28 -0.12 14.94 -0.02
6 0.1450 -3004.54 -0.06 16.60 0.10
7 0.1475 -3069.16 0.22 16.53 0.10
8 0.1476 -3072.67 0.04 16.60 0.21
9 0.1477 -3075.68 0.11 16.12 -0.25
10 0.1641 -3505.16 -0.21 15.11 -0.06
11 0.1642 -3508.24 0.19 15.20 0.06
12 0.2403 -5387.49 0.27 1.23 -0.07
13 0.2429 -5445.36 -0.08 0.50 -0.10
14 0.2652 -5903.11 -0.00 -6.08 -0.04
15 0.2654 -5906.26 -0.05 -6.04 0.07
16 0.3390 -6934.55 0.06 -33.48 0.05
17 0.3416 -6955.23 0.01 -34.65 -0.03
18 0.3964 -7107.64 -0.02 -58.59 0.04
19 0.4046 -7083.65 -0.24 -62.26 0.05
20 0.4155 -7031.66 -0.02 -67.23 -0.01
21 0.9640 5037.31 -0.04 -95.60 0.00
22 0.9831 4921.75 0.01 -90.70 -0.07
23 1.0625 3778.06 0.05 -74.56 0.26
24 1.1252 2327.42 0.00 -70.61 -0.11
25 1.1415 1905.81 -0.03 -70.84 0.01
26 1.2018 341.51 0.12 -77.40 0.10
27 1.2042 281.45 0.03 -77.88 -0.00
28 1.2179 -56.30 -0.02 -80.58 0.06
29 1.2753 -1295.07 0.06 -96.17 0.10
30 1.2781 -1345.36 0.04 -97.24 -0.06
31 1.2947 -1626.63 -0.05 -103.10 -0.20
32 1.3574 -2306.13 -0.06 -127.53 -0.02
33 1.3848 -2390.84 0.01 -139.36 -0.11
34 2.0291 9164.16 -0.01 -167.17 -0.03
35 2.3512 2485.15 -0.04 -211.12 0.06
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.
15GL57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.894 42.903 42.885 ecceobj 0.011 0.012 0.010 incobj 1.248 1.248 1.248 qmin 41.460 41.430 41.501 qmax 45.054 45.112 44.982 amean 43.170 43.180 43.162 amin 42.848 42.853 42.832 amax 43.504 43.516 43.491 emean 0.018 0.019 0.017 emin 0.000 0.000 0.000 emax 0.036 0.037 0.035 imean 1.060 1.057 1.064 imin 0.000 0.000 0.000 imax 1.672 1.671 1.677 excite_mean 0.028 0.029 0.028 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 179.9 178.6 180.5 kozaiamp 179.9 179.9 180.0