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: 15DM319
# Created Mon Apr 28 01:10:21 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 18 observations of 18
# Arc: 5.91y
# First observation: 2011/08/01
# Last observation: 2017/06/28
# Chi-squared of fit: 9.04 DOF: 30 RMS: 0.13
# Min/Max residuals: -0.22 0.22
# Exact a, adot, b, bdot, g, gdot:
2.011083E-05 3.274247E-02 5.910757E-07 1.789247E-03 2.467884E-02 4.728251E-03
# Covariance matrix:
7.2663E-13 -3.3418E-13 1.0305E-14 -1.1401E-14 -8.4314E-14 -1.1046E-12
-3.3418E-13 3.5501E-13 -1.1901E-14 1.8917E-14 -4.0477E-14 1.6302E-12
1.0305E-14 -1.1901E-14 5.5507E-13 -1.3402E-13 -5.2452E-15 -6.5622E-14
-1.1401E-14 1.8917E-14 -1.3402E-13 3.8724E-14 -3.7972E-15 9.6233E-14
-8.4314E-14 -4.0477E-14 -5.2452E-15 -3.7972E-15 2.7305E-13 -2.9553E-14
-1.1046E-12 1.6302E-12 -6.5622E-14 9.6233E-14 -2.9553E-14 8.4908E-12
# lat0 lon0 xBary yBary zBary JD0
6.179943 -131.503892 -0.997217 0.019212 -0.177990 2455774.744719
# Heliocentric elements and errors
Epoch: 2455774.5000 = 2011/08/01
Mean Anomaly: 0.84506 +/- 0.002
Argument of Peri: 43.28697 +/- 0.010
Long of Asc Node: 165.98722 +/- 0.003
Inclination: 6.84224 +/- 0.000
Eccentricity: 0.85670816 +/- 0.0002
Semi-Major Axis: 275.54799564 +/- 0.3186
Time of Perihelion: 2451852.7455 +/- 9.7
Perihelion: 39.48378054 +/- 0.0646
Aphelion: 511.61221074 +/- 0.5933
Period (y) 4574.0835 +/- 7.93
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -26.06314894 +/- 0.0006
Ecliptic Y -30.96480700 +/- 0.0006
Ecliptic Z 4.36216463 +/- 0.0001
Ecliptic XDOT 0.00238605 +/- 0.0000
Ecliptic YDOT -0.00277610 +/- 0.0000
Ecliptic ZDOT 0.00025387 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.70778646 +/- 0.0006
Geocenter to KBO 40.52046846 +/- 0.0009
# Hcoef: 8.69
The following table shows the complete astrometric record for 15DM319. 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 (15DM319) followed by the observatory code and reference code for the source of the astrometry.
2011 08 01.243953 15 11 06.00 -11 23 05.9 24.8r 15DM319 T14 C~7X9K 2011 08 01.275567 15 11 05.98 -11 23 06.1 15DM319 T14 C~7X9K 2014 06 22.329301 15 34 37.81 -12 31 46.8 15DM319 T14 C~7X9K 2014 06 22.372229 15 34 37.65 -12 31 46.4 15DM319 T14 C~7X9K 2015 02 25.630100 15 48 08.32 -13 21 19.9 15DM319 T14 C~7X9K 2015 03 22.543249 15 47 51.60 -13 16 15.9 15DM319 T14 C~7X9K 2015 04 18.560459 15 46 34.82 -13 08 37.5 15DM319 T14 C~7X9K 2015 05 21.326470 15 44 14.62 -12 59 08.7 24.9r 15DM319 T14 C~7X9K 2015 05 21.367719 15 44 14.43 -12 59 08.0 15DM319 T14 C~7X9K 2015 05 21.408941 15 44 14.24 -12 59 07.7 15DM319 T14 C~7X9K 2015 05 22.485414 15 44 09.33 -12 58 51.1 15DM319 T14 C~7X9K 2015 05 25.475993 15 43 55.82 -12 58 06.1 15DM319 T14 C~7X9K 2015 06 20.365304 15 42 07.16 -12 53 06.0 15DM319 T14 C~7X9K 2015 06 20.406170 15 42 07.01 -12 53 05.8 15DM319 T14 C~7X9K 2015 06 23.426435 15 41 56.06 -12 52 43.0 15DM319 T14 C~7X9K 2016 04 08.628567 15 54 21.81 -13 30 41.1 15DM319 T14 C~7X9K 2017 06 28.263520 15 56 05.62 -13 31 10.7 15DM319 T14 C~7X9K 2017 06 28.274291 15 56 05.58 -13 31 10.6 24.8r 15DM319 T14 C~7X9K
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 0.21 0.00 0.06
2 0.0001 0.00 -0.11 0.00 0.14
3 2.8914 0.00 -0.12 0.00 -0.08
4 2.8915 0.00 -0.22 0.00 -0.00
5 3.5712 0.00 0.16 0.00 -0.02
6 3.6394 0.00 -0.05 0.00 -0.09
7 3.7134 0.00 -0.12 0.00 -0.01
8 3.8031 0.00 0.06 0.00 0.11
9 3.8032 0.00 0.07 0.00 0.17
10 3.8033 0.00 0.08 0.00 -0.16
11 3.8063 0.00 -0.17 0.00 -0.15
12 3.8145 0.00 0.22 0.00 -0.07
13 3.8853 0.00 0.03 0.00 -0.09
14 3.8855 0.00 0.10 0.00 -0.22
15 3.8937 0.00 -0.04 0.00 -0.01
16 4.6883 0.00 -0.14 0.00 0.15
17 5.9083 0.00 0.03 0.00 0.13
18 5.9084 0.00 -0.00 0.00 0.17
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.
15DM319 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 269.536 269.535 269.536 ecceobj 0.854 0.854 0.854 incobj 6.847 6.847 6.847 qmin 36.726 36.663 36.757 qmax 578.064 608.638 603.676 amean 280.479 290.389 284.910 amin 262.158 269.535 269.009 amax 308.750 324.051 321.573 emean 0.859 0.864 0.861 emin 0.846 0.851 0.850 emax 0.872 0.878 0.877 imean 5.926 6.056 5.935 imin 5.682 5.837 5.700 imax 6.321 6.321 6.321 excite_mean 0.865 0.870 0.868 fracstop 1.000 1.000 1.000 cjmean 3.214 3.214 3.214 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 62.8 55.3 62.0 kozaiamp 18.2 13.3 19.4