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: 14YR72 # Created Sun Dec 22 02:10:14 2024 # Orbit generated from Bernstein formalism # Fitting 23 observations of 23 # Arc: 3.78y # First observation: 2014/12/20 # Last observation: 2018/10/01 Preliminary a, adot, b, bdot, g, gdot: -0.000118 0.020200 0.000052 0.001238 0.023526 0.000000 # Chi-squared of fit: 7.44 DOF: 40 RMS: 0.10 # Min/Max residuals: -0.26 0.29 # Exact a, adot, b, bdot, g, gdot: 1.442888E-05 2.006890E-02 6.048922E-07 1.198860E-03 2.271618E-02 1.103246E-03 # Covariance matrix: 3.1902E-13 -2.4674E-13 -1.4895E-14 -3.1972E-15 -1.4481E-13 -2.0854E-12 -2.4674E-13 3.2177E-13 8.5882E-15 -2.1307E-15 9.3949E-14 3.0347E-12 -1.4895E-14 8.5882E-15 1.9391E-13 -7.0032E-14 4.2146E-14 1.8244E-13 -3.1972E-15 -2.1307E-15 -7.0032E-14 4.1983E-14 1.7885E-14 1.9409E-14 -1.4481E-13 9.3949E-14 4.2146E-14 1.7885E-14 3.8650E-13 1.8256E-12 -2.0854E-12 3.0347E-12 1.8244E-13 1.9409E-14 1.8256E-12 3.4648E-11 # lat0 lon0 xBary yBary zBary JD0 -26.596093 6.329616 -0.972106 -0.065483 -0.131241 2457011.615388 # Heliocentric elements and errors Epoch: 2457010.5000 = 2014/12/19 Mean Anomaly: 144.81850 +/- 0.093 Argument of Peri: 124.83507 +/- 0.090 Long of Asc Node: 88.81616 +/- 0.001 Inclination: 26.78533 +/- 0.000 Eccentricity: 0.14538901 +/- 0.0001 Semi-Major Axis: 39.26286311 +/- 0.0036 Time of Perihelion: 2420861.7799 +/- 22.7 Perihelion: 33.55447413 +/- 0.0061 Aphelion: 44.97125210 +/- 0.0067 Period (y) 246.0261 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 39.15914623 +/- 0.0011 Ecliptic Y 5.32363376 +/- 0.0001 Ecliptic Z -19.70838239 +/- 0.0005 Ecliptic XDOT -0.00008825 +/- 0.0000 Ecliptic YDOT 0.00241912 +/- 0.0000 Ecliptic ZDOT 0.00006977 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.16107049 +/- 0.0010 Geocenter to KBO 44.02149303 +/- 0.0012 # Hcoef: 6.76
The following table shows the complete astrometric record for 14YR72. 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 (14YR72) followed by the observatory code and reference code for the source of the astrometry.
2014 12 20.11461 01 07 14.933 -21 48 38.53 24.4g 14YR72 W84 C~4yVV 2014 12 20.11752 01 07 14.94 -21 48 38.4 23.3r 14YR72 W84 C~3cpj 2014 12 22.06982 01 07 12.872 -21 47 32.20 23.0r 14YR72 W84 C~4yVW 2014 12 25.07215 01 07 10.347 -21 45 45.39 22.7z 14YR72 W84 C~4yVW 2015 10 08.20997 01 15 58.085 -21 19 59.78 23.1r 14YR72 W84 C~4yVW 2015 11 06.10918 01 13 45.049 -21 26 51.23 22.9i 14YR72 W84 C~4yVW 2015 11 06.11056 01 13 45.043 -21 26 51.27 23.2r 14YR72 W84 C~4yVW 2015 11 06.11194 01 13 45.018 -21 26 51.15 24.1g 14YR72 W84 C~4yVW 2015 11 16.15178 01 13 04.360 -21 26 37.17 22.9i 14YR72 W84 C~4yVW 2016 08 26.38295 01 23 04.49 -20 20 53.4 23.5r 14YR72 W84 C~3cpk 2016 10 05.27534 01 20 28.104 -20 44 32.77 22.7i 14YR72 W84 C~4yVW 2016 10 05.27673 01 20 28.101 -20 44 32.73 22.9r 14YR72 W84 C~4yVW 2016 10 05.27813 01 20 28.080 -20 44 32.58 24.3g 14YR72 W84 C~4yVW 2016 12 01.07156 01 16 30.684 -20 49 38.44 23.3r 14YR72 W84 C~4yVW 2016 12 01.07293 01 16 30.683 -20 49 38.30 23.1i 14YR72 W84 C~4yVW 2016 12 21.11576 01 15 49.172 -20 41 09.59 23.4r 14YR72 W84 C~4yVW 2016 12 21.11714 01 15 49.172 -20 41 09.64 22.8i 14YR72 W84 C~4yVW 2017 12 08.05814 01 20 28.276 -20 13 18.89 23.2i 14YR72 W84 C~4yVW 2017 12 08.05950 01 20 28.273 -20 13 18.93 23.4r 14YR72 W84 C~4yVW 2018 09 14.37686 01 30 30.550 -19 22 50.89 22.8i 14YR72 W84 C~4yVW 2018 09 14.37824 01 30 30.552 -19 22 51.06 23.4r 14YR72 W84 C~4yVW 2018 09 14.37961 01 30 30.528 -19 22 51.19 24.0g 14YR72 W84 C~4yVW 2018 10 01.33038 01 29 19.763 -19 32 23.30 21.7z 14YR72 W84 C~4yVW
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 -0.09 0.00 0.05
2 0.0000 0.14 0.05 0.08 0.01
3 0.0054 2.27 0.10 72.24 -0.12
4 0.0136 15.92 -0.03 183.86 -0.02
5 0.7997 7326.86 0.04 -1604.62 -0.08
6 0.8788 5473.84 0.03 -1162.57 -0.00
7 0.8788 5473.74 0.02 -1162.57 -0.04
8 0.8788 5473.48 -0.17 -1162.31 0.19
9 0.9063 4968.03 0.01 -902.80 -0.06
10 1.6845 14276.77 -0.03 -1076.46 0.04
11 1.7937 11667.27 0.01 -1365.99 -0.14
12 1.7937 11667.25 0.09 -1365.93 -0.10
13 1.7937 11667.05 -0.01 -1365.67 0.16
14 1.9492 8537.69 0.05 -167.16 0.07
15 1.9492 8537.74 0.14 -167.02 0.16
16 2.0041 8237.10 -0.07 546.10 0.03
17 2.0041 8237.08 -0.09 546.05 -0.07
18 2.9677 12505.27 -0.03 314.28 0.02
19 2.9677 12505.21 -0.05 314.27 -0.05
20 3.7351 21519.19 -0.02 -823.51 0.01
21 3.7352 21519.14 0.02 -823.68 -0.14
22 3.7352 21518.77 -0.26 -823.64 -0.09
23 3.7816 20355.23 0.29 -874.97 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.
14YR72 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.556 39.568 39.545 ecceobj 0.139 0.139 0.139 incobj 26.795 26.795 26.795 qmin 31.353 31.343 31.316 qmax 47.929 47.984 47.930 amean 39.455 39.455 39.455 amin 39.099 39.127 39.104 amax 39.834 39.829 39.852 emean 0.164 0.164 0.164 emin 0.118 0.116 0.119 emax 0.205 0.205 0.205 imean 24.897 24.896 24.905 imin 23.988 23.966 24.028 imax 25.765 25.783 25.740 excite_mean 0.453 0.452 0.453 fracstop 1.000 1.000 1.000 cjmean 2.811 2.811 2.811 libcent 0 180.3 180.1 179.7 libamp 0 53.4 48.2 58.8 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 180.2 180.7 179.4 kozaiamp 180.0 180.0 180.0