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: 15GO55
# Created Sun Nov 24 02:10:16 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 2.33y
# First observation: 2015/02/20
# Last observation: 2017/06/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000068 0.026099 0.000011 -0.003566 0.025522 0.000000
# Chi-squared of fit: 4.64 DOF: 54 RMS: 0.07
# Min/Max residuals: -0.14 0.18
# Exact a, adot, b, bdot, g, gdot:
1.603336E-05 2.599668E-02 -1.509016E-06 -3.542401E-03 2.559260E-02 -2.244642E-03
# Covariance matrix:
2.4383E-13 -3.7883E-14 2.7619E-15 -1.2678E-14 1.5765E-13 1.8605E-12
-3.7883E-14 3.2977E-13 1.3283E-14 -5.0891E-14 1.9206E-13 7.3336E-12
2.7619E-15 1.3283E-14 1.3389E-13 -1.0263E-13 1.0806E-14 4.6099E-13
-1.2678E-14 -5.0891E-14 -1.0263E-13 1.2927E-13 -4.3702E-14 -1.7602E-12
1.5765E-13 1.9206E-13 1.0806E-14 -4.3702E-14 2.8548E-13 6.3345E-12
1.8605E-12 7.3336E-12 4.6099E-13 -1.7602E-12 6.3345E-12 2.5356E-10
# lat0 lon0 xBary yBary zBary JD0
3.357090 -158.173581 0.760274 0.036887 -0.626543 2457074.106708
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 309.36588 +/- 0.087
Argument of Peri: 219.22280 +/- 0.146
Long of Asc Node: 43.78512 +/- 0.002
Inclination: 8.38233 +/- 0.001
Eccentricity: 0.12210756 +/- 0.0006
Semi-Major Axis: 42.58383715 +/- 0.0067
Time of Perihelion: 2471346.4951 +/- 24.4
Perihelion: 37.38402854 +/- 0.0248
Aphelion: 47.78364576 +/- 0.0252
Period (y) 277.8916 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.07862629 +/- 0.0008
Ecliptic Y -14.03012387 +/- 0.0003
Ecliptic Z 2.28806179 +/- 0.0000
Ecliptic XDOT 0.00123230 +/- 0.0000
Ecliptic YDOT -0.00250643 +/- 0.0000
Ecliptic ZDOT -0.00039228 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.71025220 +/- 0.0007
Geocenter to KBO 39.07379021 +/- 0.0008
# Hcoef: 8.30
The following table shows the complete astrometric record for 15GO55. 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 (15GO55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 20.60593 13 25 44.306 -05 23 19.23 24.2r 15GO55 568 C~2lVB 2015 03 18.55062 13 24 13.166 -05 13 38.76 24.6r 15GO55 568 C~2lVB 2015 03 18.59161 13 24 12.989 -05 13 37.83 24.2r 15GO55 568 C~2lVB 2015 04 11.48904 13 22 22.702 -05 02 57.80 24.0r 15GO55 568 C~2lVB 2015 04 13.35330 13 22 13.755 -05 02 07.77 24.1r 15GO55 568 C~2lVB 2015 04 13.39426 13 22 13.549 -05 02 06.74 24.2r 15GO55 568 C~2lVB 2015 04 13.46376 13 22 13.210 -05 02 04.90 24.3r 15GO55 568 C~2lVB 2015 04 13.46849 13 22 13.187 -05 02 04.88 24.2r 15GO55 568 C~2lVB 2015 06 20.26671 13 18 12.695 -04 43 44.57 24.4r 15GO55 568 C~2lVB 2015 06 20.30767 13 18 12.636 -04 43 44.53 24.5r 15GO55 568 C~2lVB 2015 06 22.31136 13 18 10.225 -04 43 44.33 24.3r 15GO55 568 C~2lVB 2015 07 14.26266 13 18 07.419 -04 46 09.89 24.4r 15GO55 568 C~2lVB 2015 07 20.25407 13 18 14.305 -04 47 35.89 24.3r 15GO55 568 C~2lVB 2016 02 04.54303 13 31 30.908 -06 11 26.47 24.7w 15GO55 568 C~2lVB 2016 02 10.53099 13 31 22.849 -06 10 22.50 24.4w 15GO55 568 C~2lVB 2016 03 11.52813 13 29 57.641 -06 01 06.16 24.6w 15GO55 568 C~2lVB 2016 03 17.46439 13 29 33.639 -05 58 41.26 25.6w 15GO55 568 C~2lVB 2016 04 03.41700 13 28 17.227 -05 51 17.43 24.5w 15GO55 568 C~2lVB 2016 04 09.39673 13 27 48.602 -05 48 36.94 24.3w 15GO55 568 C~2lVB 2016 05 01.34835 13 26 04.303 -05 39 19.96 24.3w 15GO55 568 C~2lVB 2016 05 01.39731 13 26 04.085 -05 39 19.03 24.3w 15GO55 568 C~2lVB 2016 05 02.29095 13 26 00.038 -05 38 58.42 24.5w 15GO55 568 C~2lVB 2016 05 06.30070 13 25 42.185 -05 37 28.60 24.4w 15GO55 568 C~2lVB 2016 05 28.26386 13 24 18.118 -05 30 59.71 24.3w 15GO55 568 C~2lVB 2016 06 04.34531 13 23 57.389 -05 29 38.79 24.2w 15GO55 568 C~2lVB 2016 06 27.27676 13 23 17.731 -05 28 15.88 24.5w 15GO55 568 C~2lVB 2016 07 06.31265 13 23 14.773 -05 29 02.24 23.6w 15GO55 568 C~2lVB 2017 02 24.63168 13 36 09.476 -06 51 09.80 15GO55 568 C~2lVB 2017 03 29.44523 13 34 03.912 -06 38 40.50 24.5w 15GO55 568 C~2lVB 2017 06 22.27110 13 28 38.793 -06 12 41.37 24.6w 15GO55 568 C~2lVB
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 0.01 0.00 -0.14
2 0.0710 -1479.48 -0.05 33.73 0.02
3 0.0711 -1482.28 0.01 33.61 -0.09
4 0.1366 -3250.02 -0.01 15.14 -0.08
5 0.1417 -3392.76 0.04 11.82 0.17
6 0.1418 -3396.00 -0.01 11.63 0.09
7 0.1420 -3401.39 0.01 11.46 0.09
8 0.1420 -3401.72 0.06 11.35 -0.01
9 0.3276 -7149.62 0.00 -308.17 -0.04
10 0.3277 -7150.45 -0.04 -308.46 -0.04
11 0.3332 -7184.00 -0.01 -321.75 0.04
12 0.3933 -7168.51 0.01 -472.53 0.02
13 0.4097 -7040.75 -0.03 -513.86 0.05
14 0.9553 5875.07 0.01 -770.33 0.03
15 0.9717 5739.66 -0.08 -755.15 0.02
16 1.0539 4352.33 -0.10 -706.80 -0.04
17 1.0701 3965.91 -0.01 -704.36 -0.01
18 1.1165 2742.19 0.04 -713.33 -0.06
19 1.1329 2285.90 0.06 -722.26 0.03
20 1.1930 633.55 -0.02 -781.52 0.13
21 1.1931 630.19 0.18 -781.86 -0.01
22 1.1956 566.44 0.11 -785.12 -0.05
23 1.2066 285.63 -0.08 -800.53 -0.03
24 1.2667 -1024.13 -0.01 -905.29 -0.12
25 1.2861 -1341.55 -0.00 -945.15 0.02
26 1.3489 -1922.14 -0.14 -1088.31 -0.14
27 1.3736 -1945.90 0.09 -1147.78 0.09
28 2.0124 10619.81 0.06 -1462.42 -0.08
29 2.1022 8600.49 -0.04 -1451.24 0.09
30 2.3345 3516.13 -0.03 -1787.49 0.04
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.
15GO55 quality flag:2 Type: SCATNEAR SCATNEAR 5:3EE axisobj 42.187 42.201 42.173 ecceobj 0.119 0.120 0.118 incobj 8.407 8.407 8.407 qmin 36.624 36.805 34.592 qmax 48.582 48.405 50.571 amean 42.326 42.326 42.328 amin 41.837 41.866 41.853 amax 42.859 42.835 42.854 emean 0.112 0.108 0.137 emin 0.070 0.069 0.092 emax 0.134 0.130 0.181 imean 6.538 5.866 5.196 imin 4.667 3.805 1.449 imax 8.071 7.860 8.167 excite_mean 0.161 0.149 0.167 fracstop 1.000 1.000 1.000 cjmean 3.051 3.055 3.049 libcent 0 -180.0 -180.0 183.7 libamp 0 -180.0 -180.0 139.2 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 188.5 170.6 147.6 kozaiamp 179.9 179.9 179.8