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: 15FF495
# Created Tue Apr 1 01:10:22 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 10.86d
# First observation: 2015/03/18
# Last observation: 2015/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.029208 -0.000000 0.010415 0.024088 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 4.54 DOF: 25 RMS: 0.10
# Min/Max residuals: -0.30 0.15
# Exact a, adot, b, bdot, g, gdot:
1.070125E-05 1.562019E-02 7.214330E-06 1.041611E-02 2.193456E-02 9.224343E-03
# Covariance matrix:
2.5945E-10 3.6236E-07 -1.6921E-12 -5.1598E-11 5.7384E-08 -3.3828E-07
3.6236E-07 5.0662E-04 -2.3645E-09 -7.2667E-08 8.0226E-05 -4.7465E-04
-1.6921E-12 -2.3645E-09 2.5241E-13 -9.5883E-12 -3.7447E-10 2.1432E-09
-5.1598E-11 -7.2667E-08 -9.5883E-12 7.0450E-10 -1.1489E-08 9.9615E-08
5.7384E-08 8.0226E-05 -3.7447E-10 -1.1489E-08 1.2704E-05 -7.5104E-05
-3.3828E-07 -4.7465E-04 2.1432E-09 9.9615E-08 -7.5104E-05 5.4669E-04
# lat0 lon0 xBary yBary zBary JD0
1.192617 -178.457737 0.072198 0.020722 -0.989310 2457099.995558
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 54.76154 +/- 54.635
Argument of Peri: 255.04933 +/- 135.471
Long of Asc Node: 179.69720 +/- 2.526
Inclination: 33.62606 +/- 37.878
Eccentricity: 0.44551610 +/- 1.1945
Semi-Major Axis: 50.52223013 +/- 25.7108
Time of Perihelion: 2437138.0900 +/- 12817.2
Perihelion: 28.01376321 +/- 62.0119
Aphelion: 73.03069705 +/- 70.8767
Period (y) 359.1137 +/- 274.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -46.55798180 +/- 7.4040
Ecliptic Y -1.18127590 +/- 0.1987
Ecliptic Z 0.94924148 +/- 0.1543
Ecliptic XDOT -0.00107460 +/- 0.0031
Ecliptic YDOT -0.00198501 +/- 0.0024
Ecliptic ZDOT 0.00132390 +/- 0.0003
# Distances at JD0 (AU)
Heliocenter to KBO 46.58263777 +/- 7.4001
Geocenter to KBO 45.59015333 +/- 7.4083
# Hcoef: 7.56
The following table shows the complete astrometric record for 15FF495. 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 (15FF495) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.49478 12 07 33.43 +00 28 51.1 24.2r 15FF495 T09 C~8iaj 2015 03 18.55140 12 07 33.19 +00 28 52.9 24.4r 15FF495 T09 C~8iaj 2015 03 18.57964 12 07 33.07 +00 28 53.8 24.2r 15FF495 T09 C~8iaj 2015 03 20.46072 12 07 25.42 +00 29 55.9 23.7i 15FF495 T09 C~8iaj 2015 03 20.49692 12 07 25.27 +00 29 57.3 23.8i 15FF495 T09 C~8iaj 2015 03 20.49965 12 07 25.25 +00 29 57.3 23.7i 15FF495 T09 C~8iaj 2015 03 20.53554 12 07 25.10 +00 29 58.5 23.6i 15FF495 T09 C~8iaj 2015 03 25.47205 12 07 04.98 +00 32 40.9 24.9g 15FF495 T09 C~8iaj 2015 03 25.48492 12 07 04.92 +00 32 41.6 25.0g 15FF495 T09 C~8iaj 2015 03 25.52811 12 07 04.74 +00 32 42.9 24.9g 15FF495 T09 C~8iaj 2015 03 29.26630 12 06 49.57 +00 34 45.2 23.0y 15FF495 T09 C~8iaj 2015 03 29.29365 12 06 49.45 +00 34 46.2 23.7y 15FF495 T09 C~8iaj 2015 03 29.32352 12 06 49.33 +00 34 46.7 24.3y 15FF495 T09 C~8iaj 2015 03 29.34265 12 06 49.25 +00 34 47.7 24.1y 15FF495 T09 C~8iaj 2015 03 29.35897 12 06 49.19 +00 34 48.2 23.7y 15FF495 T09 C~8iaj
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 0.12 0.00 0.06
2 0.0002 -4.02 0.06 0.22 -0.04
3 0.0002 -6.03 0.02 0.33 -0.09
4 0.0054 -136.01 0.04 11.68 -0.06
5 0.0055 -138.63 -0.04 12.07 0.13
6 0.0055 -138.90 -0.12 11.95 0.00
7 0.0056 -141.44 -0.14 12.16 0.01
8 0.0191 -482.92 0.15 41.17 -0.10
9 0.0191 -484.03 -0.05 41.45 0.11
10 0.0193 -487.02 -0.02 41.57 -0.00
11 0.0295 -744.43 0.04 63.31 0.07
12 0.0296 -746.48 -0.12 63.51 0.12
13 0.0296 -748.33 0.11 63.26 -0.30
14 0.0297 -749.83 -0.06 63.70 0.04
15 0.0297 -750.85 0.05 63.80 0.06
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.
15FF495 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