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: 15VF171 # Created Sun Dec 22 02:10:36 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.34y # First observation: 2015/08/11 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000104 0.026134 -0.000020 0.008574 0.026029 0.000000 # Chi-squared of fit: 3.35 DOF: 52 RMS: 0.06 # Min/Max residuals: -0.14 0.17 # Exact a, adot, b, bdot, g, gdot: 1.566042E-05 2.560032E-02 5.282166E-06 8.363048E-03 2.563898E-02 -4.569318E-04 # Covariance matrix: 2.0820E-13 -6.3139E-15 -4.7955E-15 2.6613E-14 1.4198E-13 1.5580E-12 -6.3139E-15 4.3794E-13 -5.7539E-14 2.2578E-13 2.6928E-13 1.2932E-11 -4.7955E-15 -5.7539E-14 1.1517E-13 -1.2314E-13 -4.0419E-14 -2.4506E-12 2.6613E-14 2.2578E-13 -1.2314E-13 2.8215E-13 1.6577E-13 9.4892E-12 1.4198E-13 2.6928E-13 -4.0419E-14 1.6577E-13 2.9899E-13 9.5250E-12 1.5580E-12 1.2932E-11 -2.4506E-12 9.4892E-12 9.5250E-12 5.4294E-10 # lat0 lon0 xBary yBary zBary JD0 -1.513071 51.826114 1.014204 0.001669 0.058614 2457246.064839 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 335.96814 +/- 0.395 Argument of Peri: 24.26553 +/- 0.494 Long of Asc Node: 54.96741 +/- 0.000 Inclination: 18.13968 +/- 0.001 Eccentricity: 0.09779825 +/- 0.0004 Semi-Major Axis: 42.69109358 +/- 0.0036 Time of Perihelion: 2464041.7590 +/- 111.8 Perihelion: 38.51597952 +/- 0.0181 Aphelion: 46.86620763 +/- 0.0183 Period (y) 278.9421 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.85454244 +/- 0.0005 Ecliptic Y 29.97816081 +/- 0.0006 Ecliptic Z -1.02963726 +/- 0.0000 Ecliptic XDOT -0.00216672 +/- 0.0000 Ecliptic YDOT 0.00166342 +/- 0.0000 Ecliptic ZDOT 0.00089408 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.95508386 +/- 0.0006 Geocenter to KBO 39.00311575 +/- 0.0008 # Hcoef: 7.85
The following table shows the complete astrometric record for 15VF171. 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 (15VF171) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.56405 03 19 15.813 +16 45 38.04 23.8w 15VF171 568 C~2nw8 2015 09 07.63311 03 19 11.853 +16 46 31.23 23.8w 15VF171 568 C~2nw8 2015 09 12.50083 03 19 03.344 +16 46 11.99 24.0w 15VF171 568 C~2nw8 2015 10 07.54436 03 17 45.979 +16 42 33.67 24.0w 15VF171 568 C~2nw8 2015 10 07.60373 03 17 45.727 +16 42 32.90 23.9w 15VF171 568 C~2nw8 2015 10 09.58362 03 17 37.514 +16 42 08.30 23.9w 15VF171 568 C~2nw8 2015 11 07.33788 03 15 15.840 +16 34 59.00 23.5r 15VF171 568 C~2nw8 2015 11 07.38006 03 15 15.610 +16 34 58.31 23.5r 15VF171 568 C~2nw8 2015 11 07.42224 03 15 15.381 +16 34 57.62 23.5r 15VF171 568 C~2nw8 2015 11 10.50536 03 14 58.680 +16 34 07.39 23.7w 15VF171 568 C~2nw8 2015 11 17.35218 03 14 21.522 +16 32 16.49 23.8w 15VF171 568 C~2nw8 2015 11 17.39878 03 14 21.267 +16 32 15.72 23.9w 15VF171 568 C~2nw8 2015 12 06.49848 03 12 41.465 +16 27 29.60 23.9w 15VF171 568 C~2nw8 2016 01 01.34872 03 10 54.885 +16 23 11.12 24.2w 15VF171 568 C~2nw8 2016 01 07.41130 03 10 37.347 +16 22 42.29 23.9w 15VF171 568 C~2nw8 2016 01 07.42868 03 10 37.296 +16 22 42.13 24.3w 15VF171 568 C~2nw8 2016 01 08.25624 03 10 35.179 +16 22 39.43 23.9w 15VF171 568 C~2nw8 2016 02 05.28768 03 10 03.857 +16 23 50.41 24.0w 15VF171 568 C~2nw8 2016 02 10.30807 03 10 07.012 +16 24 38.50 24.1w 15VF171 568 C~2nw8 2016 09 26.58416 03 23 55.537 +17 35 34.20 24.2w 15VF171 568 C~2nw8 2016 10 09.54522 03 23 07.153 +17 33 25.37 24.1w 15VF171 568 C~2nw8 2016 10 09.61729 03 23 06.853 +17 33 24.48 24.1w 15VF171 568 C~2nw8 2016 11 04.40084 03 21 00.791 +17 27 26.54 23.9w 15VF171 568 C~2nw8 2016 12 24.31334 03 16 49.407 +17 16 00.04 24.2w 15VF171 568 C~2nw8 2016 12 25.28177 03 16 45.693 +17 15 51.68 24.5w 15VF171 568 C~2nw8 2016 12 28.42845 03 16 34.050 +17 15 25.60 24.1w 15VF171 568 C~2nw8 2017 01 02.41556 03 16 17.320 +17 14 51.23 15VF171 568 C~2nw8 2017 12 13.39064 03 23 11.494 +18 09 32.76 23.8w 15VF171 568 C~2nw8 2017 12 13.42791 03 23 11.310 +18 09 32.25 23.9w 15VF171 568 C~2nw8
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 0.03 0.00 -0.03
2 0.0741 -41.31 -0.04 66.01 -0.03
3 0.0874 -164.35 -0.01 78.81 -0.04
4 0.1560 -1294.39 -0.03 154.36 0.02
5 0.1562 -1298.09 -0.10 154.55 -0.00
6 0.1616 -1418.43 -0.06 161.31 -0.03
7 0.2403 -3496.41 0.08 276.54 0.06
8 0.2404 -3499.78 0.09 276.74 0.05
9 0.2405 -3503.14 0.12 276.93 0.03
10 0.2490 -3748.10 -0.13 291.31 0.04
11 0.2677 -4292.96 0.01 324.45 -0.00
12 0.2679 -4296.70 0.03 324.67 -0.03
13 0.3201 -5757.62 -0.04 427.21 -0.03
14 0.3909 -7306.22 0.01 585.66 0.01
15 0.4075 -7557.48 0.08 625.29 0.03
16 0.4076 -7558.23 -0.01 625.33 -0.04
17 0.4098 -7588.35 0.03 630.87 0.07
18 0.4866 -8004.29 0.02 820.00 -0.05
19 0.5003 -7947.59 -0.14 854.20 0.03
20 1.1280 4638.89 0.06 1880.66 -0.05
21 1.1635 3936.52 -0.04 1929.89 -0.01
22 1.1637 3932.14 0.08 1930.11 -0.08
23 1.2343 2096.46 -0.04 2040.47 -0.02
24 1.3710 -1558.30 -0.08 2302.65 -0.01
25 1.3736 -1611.85 0.17 2308.40 0.15
26 1.3822 -1779.70 -0.05 2326.59 -0.00
27 1.3959 -2020.08 -0.01 2355.79 -0.08
28 2.3404 4543.02 0.01 4012.78 0.03
29 2.3405 4540.35 -0.06 4012.95 -0.00
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.
15VF171 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.093 43.101 43.084 ecceobj 0.103 0.103 0.103 incobj 18.079 18.080 18.079 qmin 37.664 37.688 37.683 qmax 48.055 48.151 48.057 amean 42.746 42.759 42.736 amin 42.416 42.423 42.396 amax 43.103 43.136 43.107 emean 0.101 0.101 0.101 emin 0.086 0.087 0.087 emax 0.116 0.117 0.116 imean 16.728 16.727 16.726 imin 16.186 16.171 16.186 imax 17.323 17.317 17.325 excite_mean 0.305 0.305 0.305 fracstop 1.000 1.000 1.000 cjmean 2.975 2.975 2.975 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 181.7 179.3 181.8 kozaiamp 180.0 180.0 180.0