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: 15GL55
# Created Sat Apr 20 01:17:13 2024
# Orbit generated from Bernstein formalism
# Fitting 37 observations of 37
# Arc: 2.11y
# First observation: 2015/02/17
# Last observation: 2017/03/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000149 0.024230 0.000008 -0.004714 0.024425 0.000000
# Chi-squared of fit: 2.08 DOF: 68 RMS: 0.04
# Min/Max residuals: -0.09 0.10
# Exact a, adot, b, bdot, g, gdot:
1.552264E-05 2.410500E-02 -3.230085E-06 -4.682882E-03 2.448890E-02 3.502528E-04
# Covariance matrix:
1.8304E-13 1.9913E-14 1.8521E-15 -2.4296E-14 1.7329E-13 3.5340E-12
1.9913E-14 2.9862E-13 7.2787E-15 -6.0027E-14 2.2971E-13 8.6503E-12
1.8521E-15 7.2787E-15 9.0691E-14 -8.0901E-14 6.7324E-15 4.1479E-13
-2.4296E-14 -6.0027E-14 -8.0901E-14 1.4106E-13 -6.6522E-14 -3.1486E-12
1.7329E-13 2.2971E-13 6.7324E-15 -6.6522E-14 3.5249E-13 9.6262E-12
3.5340E-12 8.6503E-12 4.1479E-13 -3.1486E-12 9.6262E-12 4.5275E-10
# lat0 lon0 xBary yBary zBary JD0
2.876035 -154.127092 0.831452 0.026664 -0.527995 2457071.097458
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 356.84731 +/- 0.821
Argument of Peri: 168.87531 +/- 0.922
Long of Asc Node: 39.10675 +/- 0.001
Inclination: 11.28344 +/- 0.001
Eccentricity: 0.05675291 +/- 0.0001
Semi-Major Axis: 43.85854654 +/- 0.0029
Time of Perihelion: 2457999.5923 +/- 242.0
Perihelion: 41.36944654 +/- 0.0039
Aphelion: 46.34764653 +/- 0.0042
Period (y) 290.4622 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.53669332 +/- 0.0009
Ecliptic Y -17.27947274 +/- 0.0004
Ecliptic Z 2.04876757 +/- 0.0001
Ecliptic XDOT 0.00111353 +/- 0.0000
Ecliptic YDOT -0.00245890 +/- 0.0000
Ecliptic ZDOT -0.00052083 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.37367487 +/- 0.0008
Geocenter to KBO 40.83482881 +/- 0.0010
# Hcoef: 7.40
The following table shows the complete astrometric record for 15GL55. 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 (15GL55) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.59668 13 40 09.842 -07 18 54.58 23.3r 15GL55 568 C~2lVB 2015 02 17.63771 13 40 09.756 -07 18 54.12 23.3r 15GL55 568 C~2lVB 2015 02 20.63083 13 40 03.308 -07 18 13.64 23.8r 15GL55 568 C~2lVB 2015 03 18.57516 13 38 40.362 -07 10 07.57 23.5r 15GL55 568 C~2lVB 2015 03 18.62254 13 38 40.173 -07 10 06.47 23.5r 15GL55 568 C~2lVB 2015 03 20.57938 13 38 32.290 -07 09 22.21 23.7r 15GL55 568 C~2lVB 2015 04 11.51365 13 36 55.088 -07 00 33.73 23.3r 15GL55 568 C~2lVB 2015 04 13.37789 13 36 46.392 -06 59 47.91 23.7r 15GL55 568 C~2lVB 2015 04 13.41891 13 36 46.201 -06 59 46.88 23.3r 15GL55 568 C~2lVB 2015 04 13.42365 13 36 46.167 -06 59 46.82 23.3r 15GL55 568 C~2lVB 2015 04 13.42846 13 36 46.148 -06 59 46.68 23.3r 15GL55 568 C~2lVB 2015 04 13.43331 13 36 46.133 -06 59 46.57 23.3r 15GL55 568 C~2lVB 2015 04 13.43815 13 36 46.099 -06 59 46.41 23.4r 15GL55 568 C~2lVB 2015 04 13.52145 13 36 45.701 -06 59 44.39 23.5r 15GL55 568 C~2lVB 2015 04 19.48929 13 36 17.766 -06 57 19.24 23.2r 15GL55 568 C~2lVB 2015 04 19.53630 13 36 17.545 -06 57 18.07 23.0r 15GL55 568 C~2lVB 2015 04 19.56015 13 36 17.431 -06 57 17.62 23.5r 15GL55 568 C~2lVB 2015 06 22.33610 13 32 35.374 -06 41 19.76 23.5r 15GL55 568 C~2lVB 2015 07 14.28829 13 32 24.293 -06 42 49.42 24.2r 15GL55 568 C~2lVB 2015 07 20.28135 13 32 28.642 -06 43 57.40 23.4r 15GL55 568 C~2lVB 2016 02 04.60621 13 45 16.899 -08 05 41.47 24.0w 15GL55 568 C~2lVB 2016 02 11.58929 13 45 09.457 -08 04 51.23 23.7w 15GL55 568 C~2lVB 2016 03 11.59678 13 43 55.321 -07 57 36.67 23.7w 15GL55 568 C~2lVB 2016 04 03.46957 13 42 20.884 -07 49 02.19 23.8w 15GL55 568 C~2lVB 2016 04 09.45073 13 41 53.385 -07 46 37.29 23.9w 15GL55 568 C~2lVB 2016 05 01.45743 13 40 11.057 -07 37 58.98 23.8w 15GL55 568 C~2lVB 2016 05 01.46152 13 40 11.033 -07 37 58.79 23.6w 15GL55 568 C~2lVB 2016 05 02.33152 13 40 07.128 -07 37 39.82 24.0w 15GL55 568 C~2lVB 2016 05 02.33557 13 40 07.106 -07 37 39.67 23.7w 15GL55 568 C~2lVB 2016 05 02.36396 13 40 06.974 -07 37 39.05 23.9w 15GL55 568 C~2lVB 2016 05 07.33487 13 39 44.962 -07 35 53.01 23.8w 15GL55 568 C~2lVB 2016 05 07.33893 13 39 44.946 -07 35 52.92 24.0w 15GL55 568 C~2lVB 2016 05 29.33959 13 38 19.896 -07 29 32.41 24.0w 15GL55 568 C~2lVB 2016 06 04.40200 13 38 01.219 -07 28 19.32 23.7w 15GL55 568 C~2lVB 2016 06 27.33817 13 37 15.213 -07 26 16.99 23.7w 15GL55 568 C~2lVB 2016 07 07.32804 13 37 08.774 -07 26 46.00 23.7w 15GL55 568 C~2lVB 2017 03 30.48771 13 47 33.193 -08 35 58.58 15GL55 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 0.04
2 0.0001 -1.36 0.04 -0.03 -0.02
3 0.0083 -105.44 0.05 3.10 0.02
4 0.0793 -1431.98 -0.04 10.46 -0.02
5 0.0795 -1435.00 -0.01 10.46 0.03
6 0.0848 -1560.40 -0.08 9.30 -0.02
7 0.1449 -3100.68 0.09 -21.98 -0.00
8 0.1500 -3237.98 0.02 -26.22 0.01
9 0.1501 -3241.01 0.07 -26.29 0.06
10 0.1501 -3241.50 -0.07 -26.41 -0.06
11 0.1501 -3241.81 -0.02 -26.39 -0.02
12 0.1501 -3242.06 0.09 -26.37 0.02
13 0.1501 -3242.59 -0.07 -26.40 -0.00
14 0.1504 -3248.85 -0.09 -26.67 -0.03
15 0.1667 -3689.22 -0.03 -42.25 -0.00
16 0.1668 -3692.71 -0.01 -42.35 0.04
17 0.1669 -3694.46 0.02 -42.55 -0.08
18 0.3415 -7126.05 0.03 -353.32 -0.01
19 0.4016 -7247.22 0.02 -497.09 -0.03
20 0.4180 -7162.00 -0.02 -536.78 0.03
21 0.9637 5269.32 0.00 -978.78 0.01
22 0.9829 5148.06 -0.05 -971.44 -0.01
23 1.0623 3963.71 -0.04 -960.42 0.08
24 1.1249 2469.02 0.00 -984.31 -0.02
25 1.1413 2035.53 0.07 -996.14 0.05
26 1.2015 429.80 0.05 -1060.79 -0.01
27 1.2015 429.40 -0.05 -1060.74 0.05
28 1.2039 368.41 0.10 -1064.00 -0.05
29 1.2039 368.05 0.03 -1063.98 -0.01
30 1.2040 365.99 0.00 -1064.11 -0.02
31 1.2176 22.51 -0.04 -1083.35 0.00
32 1.2176 22.25 -0.01 -1083.35 0.02
33 1.2779 -1294.52 0.01 -1185.69 -0.04
34 1.2945 -1579.93 0.01 -1218.08 -0.02
35 1.3573 -2262.12 -0.06 -1351.90 0.01
36 1.3846 -2340.88 -0.03 -1413.65 0.04
37 2.1133 7810.63 -0.00 -1953.87 -0.02
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.
15GL55 quality flag:3 Type: 7:4EII 7:4EII 7:4EII axisobj 43.443 43.452 43.434 ecceobj 0.048 0.048 0.048 incobj 11.322 11.323 11.322 qmin 40.869 40.815 40.812 qmax 46.776 46.835 46.854 amean 43.727 43.727 43.727 amin 43.383 43.382 43.386 amax 44.072 44.085 44.086 emean 0.032 0.040 0.040 emin 0.004 0.016 0.013 emax 0.062 0.062 0.063 imean 10.558 10.451 10.482 imin 9.886 9.754 9.788 imax 11.173 11.146 11.175 excite_mean 0.187 0.186 0.186 fracstop 1.000 1.000 1.000 cjmean 3.056 3.056 3.056 libcent 0 167.2 170.3 179.5 libamp 0 69.3 74.2 65.3 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 216.3 160.0 193.6 kozaiamp 180.0 180.0 180.0