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: 15FB495 # Created Mon Apr 28 01:10:23 2025 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 65.88d # First observation: 2015/03/18 # Last observation: 2015/05/23 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.030927 0.000001 0.003337 0.025815 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 3.38 DOF: 27 RMS: 0.08 # Min/Max residuals: -0.11 0.16 # Exact a, adot, b, bdot, g, gdot: 1.504187E-05 2.318641E-02 2.586955E-06 3.484699E-03 2.459001E-02 3.837241E-03 # Covariance matrix: 2.4816E-12 3.7006E-09 3.8283E-13 -7.2625E-11 5.7337E-10 -4.0626E-08 3.7006E-09 6.0170E-06 6.2540E-10 -1.1870E-07 9.2856E-07 -6.6985E-05 3.8283E-13 6.2540E-10 1.9565E-13 -1.3139E-11 9.6458E-11 -6.9771E-09 -7.2625E-11 -1.1870E-07 -1.3139E-11 2.3603E-09 -1.8307E-08 1.3246E-06 5.7337E-10 9.2856E-07 9.6458E-11 -1.8307E-08 1.4336E-07 -1.0320E-05 -4.0626E-08 -6.6985E-05 -6.9771E-09 1.3246E-06 -1.0320E-05 7.5025E-04 # lat0 lon0 xBary yBary zBary JD0 -1.259700 179.922724 0.044767 -0.021660 -0.990903 2457099.963238 # Heliocentric elements and errors Epoch: 2457090.5000 = 2015/03/09 Mean Anomaly: 84.32627 +/- 70.096 Argument of Peri: 248.90651 +/- 36.556 Long of Asc Node: 188.00843 +/- 0.913 Inclination: 8.61163 +/- 0.948 Eccentricity: 0.16176091 +/- 1.1206 Semi-Major Axis: 41.24078281 +/- 9.4873 Time of Perihelion: 2434431.0615 +/- 17136.0 Perihelion: 34.56963619 +/- 46.8943 Aphelion: 47.91192942 +/- 47.5112 Period (y) 264.8491 +/- 91.39 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.65126709 +/- 0.6260 Ecliptic Y 0.10076226 +/- 0.0009 Ecliptic Z -0.89390743 +/- 0.0138 Ecliptic XDOT -0.00044256 +/- 0.0031 Ecliptic YDOT -0.00258675 +/- 0.0002 Ecliptic ZDOT 0.00037859 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 41.66098023 +/- 0.6259 Geocenter to KBO 40.66692641 +/- 0.6262 # Hcoef: 8.95
The following table shows the complete astrometric record for 15FB495. 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 (15FB495) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.46246 11 57 42.71 -01 07 30.0 25.1r 15FB495 T09 C~8iai 2015 03 18.49910 11 57 42.54 -01 07 28.8 25.0r 15FB495 T09 C~8iai 2015 03 18.52754 11 57 42.42 -01 07 28.0 25.1r 15FB495 T09 C~8iai 2015 03 18.52967 11 57 42.40 -01 07 27.8 24.8r 15FB495 T09 C~8iai 2015 03 18.55580 11 57 42.29 -01 07 27.0 25.0r 15FB495 T09 C~8iai 2015 03 18.56877 11 57 42.23 -01 07 26.5 24.8r 15FB495 T09 C~8iai 2015 03 20.48863 11 57 33.58 -01 06 26.3 24.9i 15FB495 T09 C~8iai 2015 03 20.52736 11 57 33.41 -01 06 25.3 24.6i 15FB495 T09 C~8iai 2015 03 20.53005 11 57 33.39 -01 06 25.2 24.1i 15FB495 T09 C~8iai 2015 03 25.44011 11 57 11.31 -01 03 50.9 26.3g 15FB495 T09 C~8iai 2015 03 25.50459 11 57 11.01 -01 03 48.6 26.3g 15FB495 T09 C~8iai 2015 03 25.54542 11 57 10.82 -01 03 47.4 26.9g 15FB495 T09 C~8iai 2015 05 23.30928 11 53 52.95 -00 39 14.0 24.4z 15FB495 T09 C~8iai 2015 05 23.31221 11 53 52.93 -00 39 14.0 24.6z 15FB495 T09 C~8iai 2015 05 23.32981 11 53 52.90 -00 39 13.7 24.3z 15FB495 T09 C~8iai 2015 05 23.34721 11 53 52.88 -00 39 13.3 24.7z 15FB495 T09 C~8iai
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 -0.07
2 0.0001 -2.82 -0.08 0.09 -0.03
3 0.0002 -4.79 0.10 0.10 -0.06
4 0.0002 -5.14 -0.09 0.17 0.00
5 0.0003 -6.97 0.05 0.25 0.04
6 0.0003 -8.00 -0.00 0.35 0.13
7 0.0055 -150.96 -0.07 3.96 0.10
8 0.0057 -153.70 0.12 3.87 -0.05
9 0.0057 -154.02 0.01 3.84 -0.08
10 0.0191 -519.21 0.13 13.65 -0.11
11 0.0193 -524.25 -0.06 13.97 0.11
12 0.0194 -527.35 -0.08 13.93 0.01
13 0.1803 -3836.74 0.16 184.48 0.03
14 0.1803 -3837.01 -0.04 184.36 -0.10
15 0.1803 -3837.54 -0.08 184.46 -0.06
16 0.1804 -3837.98 -0.03 184.70 0.13
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.
15FB495 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