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 Sun Nov 24 02:10:17 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 38 observations of 38
# Arc: 9.29y
# First observation: 2015/02/17
# Last observation: 2024/06/03
# Chi-squared of fit: 12.44 DOF: 70 RMS: 0.10
# Min/Max residuals: -0.27 0.24
# Exact a, adot, b, bdot, g, gdot:
1.594038E-05 2.306118E-02 -2.817003E-07 -4.194676E-04 2.379134E-02 6.400593E-04
# Covariance matrix:
1.7344E-13 -5.8480E-14 -8.9752E-16 1.2260E-15 9.1147E-14 -3.0430E-13
-5.8480E-14 1.4036E-13 1.5270E-15 -2.8455E-15 3.5443E-14 7.1758E-13
-8.9752E-16 1.5270E-15 5.0692E-14 -9.0177E-15 7.2034E-17 8.3095E-15
1.2260E-15 -2.8455E-15 -9.0177E-15 6.5567E-15 -5.7976E-16 -1.5318E-14
9.1147E-14 3.5443E-14 7.2034E-17 -5.7976E-16 1.1342E-13 1.5108E-13
-3.0430E-13 7.1758E-13 8.3095E-15 -1.5318E-14 1.5108E-13 3.8611E-12
# 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: 30.59290 +/- 0.175
Argument of Peri: 113.68602 +/- 0.184
Long of Asc Node: 59.72110 +/- 0.005
Inclination: 1.24523 +/- 0.000
Eccentricity: 0.01969399 +/- 0.0001
Semi-Major Axis: 43.29330071 +/- 0.0026
Time of Perihelion: 2448228.5581 +/- 50.6
Perihelion: 42.44068300 +/- 0.0041
Aphelion: 44.14591842 +/- 0.0042
Period (y) 284.8651 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.51583918 +/- 0.0005
Ecliptic Y -18.10898678 +/- 0.0003
Ecliptic Z 0.52452729 +/- 0.0000
Ecliptic XDOT 0.00110599 +/- 0.0000
Ecliptic YDOT -0.00241741 +/- 0.0000
Ecliptic ZDOT -0.00004726 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.56383254 +/- 0.0005
Geocenter to KBO 42.03209675 +/- 0.0006
# Hcoef: 7.87
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 2024 06 03.208710 14 17 16.877 -13 13 26.69 24.5G 15GL57 G37 C~83DF 2024 06 03.253610 14 17 16.705 -13 13 26.13 15GL57 G37 C~83DF 2024 06 03.301110 14 17 16.548 -13 13 25.29 15GL57 G37 C~83DF
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 0.05
2 0.0081 0.00 -0.01 0.00 -0.06
3 0.0793 0.00 -0.09 0.00 0.01
4 0.0795 0.00 -0.02 0.00 0.00
5 0.0849 0.00 -0.13 0.00 0.03
6 0.1450 0.00 -0.02 0.00 0.12
7 0.1475 0.00 0.24 0.00 0.02
8 0.1476 0.00 0.11 0.00 0.18
9 0.1477 0.00 0.01 0.00 -0.27
10 0.1641 0.00 -0.22 0.00 0.02
11 0.1642 0.00 0.20 0.00 -0.01
12 0.2403 0.00 0.23 0.00 -0.16
13 0.2429 0.00 -0.12 0.00 -0.07
14 0.2652 0.00 -0.02 0.00 -0.04
15 0.2654 0.00 -0.02 0.00 0.08
16 0.3390 0.00 0.07 0.00 0.03
17 0.3416 0.00 -0.00 0.00 -0.03
18 0.3964 0.00 -0.00 0.00 0.04
19 0.4046 0.00 -0.21 0.00 0.13
20 0.4155 0.00 -0.02 0.00 0.00
21 0.9640 0.00 -0.05 0.00 0.02
22 0.9831 0.00 -0.03 0.00 -0.06
23 1.0625 0.00 0.13 0.00 0.22
24 1.1252 0.00 -0.05 0.00 -0.10
25 1.1415 0.00 -0.04 0.00 0.02
26 1.2018 0.00 0.14 0.00 0.05
27 1.2042 0.00 0.01 0.00 -0.01
28 1.2179 0.00 -0.01 0.00 0.07
29 1.2753 0.00 0.07 0.00 0.08
30 1.2781 0.00 0.00 0.00 -0.07
31 1.2947 0.00 -0.13 0.00 -0.16
32 1.3574 0.00 -0.08 0.00 0.01
33 1.3848 0.00 -0.05 0.00 -0.10
34 2.0291 0.00 0.00 0.00 -0.03
35 2.3512 0.00 -0.02 0.00 0.06
36 9.2914 0.00 0.02 0.00 0.14
37 9.2916 0.00 -0.11 0.00 -0.08
38 9.2917 0.00 0.12 0.00 -0.07
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 42.894 42.894 ecceobj 0.011 0.011 0.011 incobj 1.248 1.248 1.248 qmin 41.469 41.460 41.486 qmax 45.042 45.044 45.043 amean 43.171 43.171 43.169 amin 42.845 42.843 42.836 amax 43.511 43.507 43.507 emean 0.018 0.018 0.018 emin 0.000 0.000 0.000 emax 0.036 0.036 0.036 imean 1.060 1.060 1.061 imin 0.000 0.000 0.000 imax 1.672 1.672 1.672 excite_mean 0.029 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 179.6 178.8 179.9 kozaiamp 180.0 180.0 180.0