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: 15FN494 # Created Sun Apr 27 01:10:23 2025 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 62.83d # First observation: 2015/01/16 # Last observation: 2015/03/20 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.030063 -0.000001 -0.017913 0.026745 0.000000 # Chi-squared of fit: 11.22 DOF: 68 RMS: 0.10 # Min/Max residuals: -0.20 0.28 # Exact a, adot, b, bdot, g, gdot: 1.744836E-05 2.990430E-02 -1.149245E-05 -1.787252E-02 2.666895E-02 1.792287E-03 # Covariance matrix: 1.1096E-13 5.5795E-12 2.0768E-14 -1.0311E-12 2.2550E-12 3.3514E-10 5.5795E-12 5.0678E-08 5.2324E-11 4.0985E-11 9.0622E-09 1.8888E-07 2.0768E-14 5.2324E-11 1.1326E-13 -6.3059E-13 9.6736E-12 2.7822E-10 -1.0311E-12 4.0985E-11 -6.3059E-13 2.9622E-11 -1.5050E-11 -5.7507E-09 2.2550E-12 9.0622E-09 9.6736E-12 -1.5050E-11 1.6464E-09 4.0541E-08 3.3514E-10 1.8888E-07 2.7822E-10 -5.7507E-09 4.0541E-08 2.4869E-06 # lat0 lon0 xBary yBary zBary JD0 -10.257832 151.867170 0.578750 -0.141073 -0.780437 2457039.061148 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 0.78567 +/- 0.954 Argument of Peri: 193.73654 +/- 6.324 Long of Asc Node: 314.77219 +/- 0.120 Inclination: 32.38575 +/- 0.185 Eccentricity: 0.66499450 +/- 0.0172 Semi-Major Axis: 114.08797813 +/- 5.3174 Time of Perihelion: 2456059.1016 +/- 1177.3 Perihelion: 38.22009985 +/- 2.6515 Aphelion: 189.95585642 +/- 9.0686 Period (y) 1218.6192 +/- 85.20 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.96791677 +/- 0.0495 Ecliptic Y 18.28227737 +/- 0.0265 Ecliptic Z -6.67780221 +/- 0.0102 Ecliptic XDOT -0.00132296 +/- 0.0001 Ecliptic YDOT -0.00278133 +/- 0.0001 Ecliptic ZDOT -0.00183815 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.28469988 +/- 0.0445 Geocenter to KBO 37.49679623 +/- 0.0571 # Hcoef: 8.35
The following table shows the complete astrometric record for 15FN494. 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 (15FN494) followed by the observatory code and reference code for the source of the astrometry.
2015 01 16.56037 10 00 53.28 +01 12 48.5 23.5z 15FN494 T09 C~8eRp 2015 01 16.59524 10 00 53.12 +01 12 48.5 23.7z 15FN494 T09 C~8eRp 2015 01 16.64776 10 00 52.90 +01 12 48.6 23.7z 15FN494 T09 C~8eRp 2015 01 16.66214 10 00 52.83 +01 12 48.6 24.0z 15FN494 T09 C~8eRp 2015 01 17.37763 10 00 49.78 +01 12 50.5 24.2i 15FN494 T09 C~8eRp 2015 01 17.42357 10 00 49.58 +01 12 50.6 24.0i 15FN494 T09 C~8eRp 2015 01 17.42812 10 00 49.56 +01 12 50.6 23.9i 15FN494 T09 C~8eRp 2015 01 17.43268 10 00 49.54 +01 12 50.6 23.7i 15FN494 T09 C~8eRp 2015 01 17.43723 10 00 49.53 +01 12 50.6 23.9i 15FN494 T09 C~8eRp 2015 01 17.44180 10 00 49.52 +01 12 50.6 23.7i 15FN494 T09 C~8eRp 2015 01 19.39214 10 00 40.98 +01 12 57.4 23.7z 15FN494 T09 C~8eRp 2015 01 19.43808 10 00 40.78 +01 12 57.6 23.7z 15FN494 T09 C~8eRp 2015 01 19.44263 10 00 40.76 +01 12 57.7 24.1z 15FN494 T09 C~8eRp 2015 01 19.44721 10 00 40.74 +01 12 57.6 23.7z 15FN494 T09 C~8eRp 2015 01 19.45179 10 00 40.71 +01 12 57.7 23.9z 15FN494 T09 C~8eRp 2015 01 20.39453 10 00 36.52 +01 13 01.6 25.0g 15FN494 T09 C~8eRp 2015 01 20.39935 10 00 36.50 +01 13 01.6 25.4g 15FN494 T09 C~8eRp 2015 01 20.40897 10 00 36.47 +01 13 01.4 24.5g 15FN494 T09 C~8eRp 2015 01 20.41375 10 00 36.42 +01 13 01.6 24.9g 15FN494 T09 C~8eRp 2015 01 20.44268 10 00 36.30 +01 13 01.9 24.7g 15FN494 T09 C~8eRp 2015 01 20.45227 10 00 36.25 +01 13 01.9 24.9g 15FN494 T09 C~8eRp 2015 01 20.45704 10 00 36.23 +01 13 01.9 24.9g 15FN494 T09 C~8eRp 2015 01 20.46183 10 00 36.22 +01 13 01.9 24.7g 15FN494 T09 C~8eRp 2015 01 21.60626 10 00 31.03 +01 13 07.5 23.8i 15FN494 T09 C~8eRp 2015 01 21.63572 10 00 30.90 +01 13 07.5 24.5i 15FN494 T09 C~8eRp 2015 01 21.65807 10 00 30.80 +01 13 07.7 24.5i 15FN494 T09 C~8eRp 2015 01 27.57640 10 00 03.13 +01 13 48.1 23.2y 15FN494 T09 C~8iai 2015 01 27.60312 10 00 02.99 +01 13 48.4 23.7y 15FN494 T09 C~8iai 2015 01 27.60667 10 00 02.99 +01 13 48.4 23.4y 15FN494 T09 C~8iai 2015 01 27.63660 10 00 02.84 +01 13 48.7 24.2y 15FN494 T09 C~8iai 2015 03 18.39734 09 55 55.01 +01 27 57.4 24.4r 15FN494 T09 C~8eRp 2015 03 18.41671 09 55 54.92 +01 27 57.9 24.3r 15FN494 T09 C~8eRp 2015 03 18.43485 09 55 54.84 +01 27 58.3 24.5r 15FN494 T09 C~8eRp 2015 03 18.45301 09 55 54.76 +01 27 58.8 24.1r 15FN494 T09 C~8eRp 2015 03 20.36143 09 55 46.52 +01 28 39.6 23.9i 15FN494 T09 C~8eRp 2015 03 20.37600 09 55 46.46 +01 28 39.9 23.8i 15FN494 T09 C~8eRp 2015 03 20.39052 09 55 46.39 +01 28 40.3 24.1i 15FN494 T09 C~8eRp
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 0.06 0.00 0.18
2 0.0001 -2.25 -0.03 -0.84 0.06
3 0.0002 -5.37 0.09 -1.91 0.08
4 0.0003 -6.35 -0.00 -2.27 0.01
5 0.0022 -49.85 -0.06 -16.54 0.01
6 0.0024 -52.70 -0.03 -17.50 -0.02
7 0.0024 -52.98 -0.03 -17.61 -0.03
8 0.0024 -53.26 -0.02 -17.71 -0.04
9 0.0024 -53.40 0.12 -17.76 -0.00
10 0.0024 -53.54 0.27 -17.82 0.04
11 0.0078 -175.86 -0.07 -56.38 0.03
12 0.0079 -178.73 0.01 -57.25 0.08
13 0.0079 -179.05 -0.01 -57.26 0.16
14 0.0079 -179.30 0.04 -57.46 0.05
15 0.0079 -179.75 -0.12 -57.52 0.08
16 0.0105 -239.96 -0.04 -75.92 -0.03
17 0.0105 -240.24 -0.00 -76.02 -0.04
18 0.0105 -240.59 0.28 -76.37 -0.20
19 0.0105 -241.37 -0.18 -76.44 -0.18
20 0.0106 -243.16 -0.07 -76.79 0.04
21 0.0107 -243.86 -0.15 -77.06 -0.04
22 0.0107 -244.14 -0.11 -77.16 -0.05
23 0.0107 -244.28 0.06 -77.21 -0.00
24 0.0138 -319.13 -0.17 -99.28 -0.09
25 0.0139 -320.96 -0.03 -99.96 -0.20
26 0.0140 -322.43 -0.02 -100.30 -0.11
27 0.0302 -725.19 0.06 -208.04 -0.00
28 0.0302 -727.26 -0.10 -208.49 0.02
29 0.0302 -727.26 0.15 -208.49 0.08
30 0.0303 -729.47 0.07 -209.00 0.11
31 0.1666 -4508.28 0.13 -717.23 -0.13
32 0.1666 -4509.72 0.05 -717.24 -0.07
33 0.1667 -4510.99 0.06 -717.28 -0.05
34 0.1667 -4512.29 0.03 -717.23 0.06
35 0.1719 -4642.38 -0.08 -722.32 0.04
36 0.1720 -4643.32 -0.02 -722.35 0.05
37 0.1720 -4644.45 -0.15 -722.35 0.10
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.
15FN494 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0