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: 15GV55
# Created Sun Dec 22 02:10:20 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 31 observations of 31
# Arc: 9.21y
# First observation: 2015/03/18
# Last observation: 2024/06/03
# Chi-squared of fit: 3.78 DOF: 56 RMS: 0.06
# Min/Max residuals: -0.20 0.14
# Exact a, adot, b, bdot, g, gdot:
1.399331E-05 2.521425E-02 7.395007E-06 1.363602E-02 2.965114E-02 8.978153E-03
# Covariance matrix:
1.3421E-13 -7.2480E-14 1.8288E-14 -4.4117E-14 8.7726E-14 -3.7046E-13
-7.2480E-14 1.5361E-13 -3.8489E-14 9.3366E-14 1.2706E-15 7.8135E-13
1.8288E-14 -3.8489E-14 7.1109E-14 -3.4363E-14 2.9877E-15 -2.0701E-13
-4.4117E-14 9.3366E-14 -3.4363E-14 6.7383E-14 -6.7785E-15 5.0198E-13
8.7726E-14 1.2706E-15 2.9877E-15 -6.7785E-15 1.6835E-13 -5.9129E-14
-3.7046E-13 7.8135E-13 -2.0701E-13 5.0198E-13 -5.9129E-14 4.2019E-12
# lat0 lon0 xBary yBary zBary JD0
0.163607 -152.238129 0.501916 0.002570 -0.855834 2457099.998148
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 92.39614 +/- 0.022
Argument of Peri: 235.59122 +/- 0.013
Long of Asc Node: 206.63043 +/- 0.000
Inclination: 28.25200 +/- 0.000
Eccentricity: 0.30299475 +/- 0.0000
Semi-Major Axis: 31.50712261 +/- 0.0024
Time of Perihelion: 2440521.3260 +/- 4.4
Perihelion: 21.96062977 +/- 0.0020
Aphelion: 41.05361546 +/- 0.0033
Period (y) 176.8566 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.83731084 +/- 0.0004
Ecliptic Y -15.66370043 +/- 0.0002
Ecliptic Z 0.09657003 +/- 0.0000
Ecliptic XDOT 0.00035065 +/- 0.0000
Ecliptic YDOT -0.00245042 +/- 0.0000
Ecliptic ZDOT 0.00126154 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.58742304 +/- 0.0004
Geocenter to KBO 33.72538778 +/- 0.0005
# Hcoef: 7.62
The following table shows the complete astrometric record for 15GV55. 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 (15GV55) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.49737 13 43 21.116 -10 31 29.71 22.8r 15GV55 568 C~2lVC 2015 03 18.53825 13 43 20.926 -10 31 28.25 22.9r 15GV55 568 C~2lVC 2015 03 20.54180 13 43 11.536 -10 30 18.30 22.8r 15GV55 568 C~2lVC 2015 04 11.47664 13 41 17.274 -10 16 26.43 23.0r 15GV55 568 C~2lVC 2015 04 12.38346 13 41 12.288 -10 15 50.34 23.1r 15GV55 568 C~2lVC 2015 04 12.42916 13 41 12.013 -10 15 48.64 23.0r 15GV55 568 C~2lVC 2015 04 12.47137 13 41 11.781 -10 15 46.87 22.7r 15GV55 568 C~2lVC 2015 04 18.30266 13 40 39.46 -10 11 54.2 15GV55 W84 C~2zsP 2015 04 18.44198 13 40 38.694 -10 11 48.92 22.7r 15GV55 568 C~2lVC 2015 04 18.48972 13 40 38.423 -10 11 47.10 22.7r 15GV55 568 C~2lVC 2015 04 19.28953 13 40 33.98 -10 11 14.8 23.5V 15GV55 W84 C~2zsP 2015 04 21.29051 13 40 22.89 -10 09 55.2 15GV55 W84 C~2zsP 2015 05 17.25091 13 38 07.821 -09 53 32.12 22.8r 15GV55 568 C~2lVC 2015 05 25.39277 13 37 31.915 -09 49 01.69 22.8r 15GV55 568 C~2lVC 2015 05 25.45091 13 37 31.668 -09 48 59.83 23.2r 15GV55 568 C~2lVC 2015 06 21.34235 13 36 10.035 -09 37 43.22 23.0r 15GV55 568 C~2lVC 2015 07 12.29292 13 35 54.713 -09 33 39.79 23.4r 15GV55 568 C~2lVC 2015 07 19.28272 13 35 59.913 -09 33 18.99 23.2r 15GV55 568 C~2lVC 2016 02 04.63544 13 51 50.197 -10 35 52.29 23.2w 15GV55 568 C~2lVC 2016 02 11.61375 13 51 43.309 -10 34 07.71 23.5w 15GV55 568 C~2lVC 2016 03 11.61710 13 50 21.946 -10 22 03.81 23.1w 15GV55 568 C~2lVC 2016 03 12.48956 13 50 18.381 -10 21 35.86 23.2w 15GV55 568 C~2lVC 2016 04 03.48576 13 48 33.078 -10 08 32.62 23.1w 15GV55 568 C~2lVC 2016 04 09.46692 13 48 00.969 -10 04 41.94 23.1w 15GV55 568 C~2lVC 2016 06 27.31561 13 42 31.125 -09 24 20.03 23.2w 15GV55 568 C~2lVC 2016 07 07.31185 13 42 23.148 -09 22 35.86 23.2w 15GV55 568 C~2lVC 2017 03 30.52059 13 55 24.130 -09 58 17.14 15GV55 568 C~2lVC 2017 03 31.45585 13 55 19.394 -09 57 42.51 23.0w 15GV55 568 C~2lVC 2024 06 03.216010 14 32 21.898 -07 48 19.45 23.5G 15GV55 G37 C~83DF 2024 06 03.261140 14 32 21.700 -07 48 18.58 15GV55 G37 C~83DF 2024 06 03.308570 14 32 21.490 -07 48 17.49 15GV55 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 0.02
2 0.0001 0.00 -0.07 0.00 0.06
3 0.0056 0.00 -0.01 0.00 0.04
4 0.0657 0.00 -0.05 0.00 0.01
5 0.0681 0.00 0.07 0.00 0.09
6 0.0683 0.00 -0.20 0.00 -0.02
7 0.0684 0.00 -0.12 0.00 0.07
8 0.0843 0.00 0.09 0.00 0.10
9 0.0847 0.00 0.08 0.00 0.05
10 0.0849 0.00 0.06 0.00 -0.04
11 0.0870 0.00 0.04 0.00 0.14
12 0.0925 0.00 0.07 0.00 -0.01
13 0.1636 0.00 0.02 0.00 -0.00
14 0.1859 0.00 0.05 0.00 -0.07
15 0.1860 0.00 0.03 0.00 -0.05
16 0.2597 0.00 0.02 0.00 -0.05
17 0.3170 0.00 -0.08 0.00 0.01
18 0.3362 0.00 0.01 0.00 -0.01
19 0.8847 0.00 0.03 0.00 -0.03
20 0.9038 0.00 0.01 0.00 0.00
21 0.9832 0.00 -0.04 0.00 -0.02
22 0.9856 0.00 0.06 0.00 -0.01
23 1.0458 0.00 -0.02 0.00 -0.05
24 1.0622 0.00 -0.01 0.00 -0.01
25 1.2781 0.00 -0.06 0.00 -0.07
26 1.3054 0.00 -0.09 0.00 -0.09
27 2.0343 0.00 0.10 0.00 -0.07
28 2.0368 0.00 0.00 0.00 -0.01
29 9.2121 0.00 0.01 0.00 0.06
30 9.2122 0.00 0.01 0.00 -0.04
31 9.2124 0.00 -0.01 0.00 0.03
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.
15GV55 quality flag:2 Type: CENTAURS CENTAURR CENTAURR axisobj 31.317 31.317 31.317 ecceobj 0.304 0.304 0.304 incobj 28.359 28.359 28.359 qmin 21.323 19.585 20.070 qmax 42.073 42.626 41.419 amean 31.543 30.862 30.726 amin 30.573 29.592 28.545 amax 32.367 31.678 32.297 emean 0.216 0.222 0.228 emin 0.057 0.044 0.047 emax 0.323 0.366 0.336 imean 28.257 30.310 29.880 imin 23.201 26.430 26.899 imax 32.949 33.188 33.009 excite_mean 0.525 0.560 0.556 fracstop 1.000 0.100 0.158 cjmean 2.713 2.681 2.688 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 181.0 177.6 186.7 kozaiamp 65.9 74.9 73.3