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: 15RF281
# Created Sun Nov 24 02:10:26 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 2.25y
# First observation: 2015/06/23
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000065 0.016614 -0.000001 0.002055 0.019965 0.000000
# Chi-squared of fit: 8.10 DOF: 50 RMS: 0.10
# Min/Max residuals: -0.42 0.20
# Exact a, adot, b, bdot, g, gdot:
1.264375E-05 1.625762E-02 1.839531E-06 2.004339E-03 1.968674E-02 -2.099778E-03
# Covariance matrix:
1.7507E-13 8.0429E-15 -7.7393E-15 1.3232E-14 1.4564E-13 2.8042E-12
8.0429E-15 3.6428E-13 -2.2191E-14 6.0652E-14 2.8503E-13 1.2474E-11
-7.7393E-15 -2.2191E-14 1.0371E-13 -8.2300E-14 -2.5615E-14 -1.1085E-12
1.3232E-14 6.0652E-14 -8.2300E-14 1.3178E-13 6.1392E-14 3.2907E-12
1.4564E-13 2.8503E-13 -2.5615E-14 6.1392E-14 3.7932E-13 1.2716E-11
2.8042E-12 1.2474E-11 -1.1085E-12 3.2907E-12 1.2716E-11 6.7402E-10
# lat0 lon0 xBary yBary zBary JD0
2.412124 11.232434 1.002600 -0.006910 0.166336 2457197.102358
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 243.97840 +/- 0.325
Argument of Peri: 151.39069 +/- 0.294
Long of Asc Node: 351.42087 +/- 0.003
Inclination: 7.51765 +/- 0.001
Eccentricity: 0.17909483 +/- 0.0011
Semi-Major Axis: 45.97650904 +/- 0.0172
Time of Perihelion: 2493888.1943 +/- 100.6
Perihelion: 37.74235383 +/- 0.0508
Aphelion: 54.21066426 +/- 0.0528
Period (y) 311.7541 +/- 0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 49.80693408 +/- 0.0016
Ecliptic Y 8.87034214 +/- 0.0003
Ecliptic Z 2.13798637 +/- 0.0001
Ecliptic XDOT -0.00074055 +/- 0.0000
Ecliptic YDOT 0.00215230 +/- 0.0000
Ecliptic ZDOT 0.00026627 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 50.63580391 +/- 0.0015
Geocenter to KBO 50.79560134 +/- 0.0016
# Hcoef: 7.51
The following table shows the complete astrometric record for 15RF281. 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 (15RF281) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.60158 00 37 30.296 +06 39 46.59 24.5r 15RF281 568 C~2nvt 2015 07 14.55012 00 37 39.470 +06 42 16.93 24.6r 15RF281 568 C~2nvt 2015 07 19.52115 00 37 37.046 +06 42 23.25 24.7r 15RF281 568 C~2nvt 2015 08 13.61738 00 36 59.345 +06 40 06.34 24.5r 15RF281 568 C~2nvt 2015 08 19.55480 00 36 44.768 +06 38 55.54 24.1r 15RF281 568 C~2nvt 2015 08 20.42524 00 36 42.522 +06 38 44.04 24.5r 15RF281 568 C~2nvt 2015 08 20.47472 00 36 42.382 +06 38 43.28 24.5r 15RF281 568 C~2nvt 2015 09 07.57672 00 35 46.726 +06 33 45.65 24.4w 15RF281 568 C~2nvt 2015 09 09.40442 00 35 40.405 +06 33 10.23 24.9r 15RF281 568 C~2nvt 2015 09 09.44553 00 35 40.263 +06 33 09.43 24.7r 15RF281 568 C~2nvt 2015 09 09.48644 00 35 40.117 +06 33 08.64 25.0r 15RF281 568 C~2nvt 2015 09 18.47260 00 35 07.624 +06 30 02.69 24.7w 15RF281 568 C~2nvt 2015 10 08.36042 00 33 51.564 +06 22 28.05 24.6w 15RF281 568 C~2nvt 2015 10 08.41303 00 33 51.372 +06 22 26.75 24.6w 15RF281 568 C~2nvt 2015 10 09.33000 00 33 47.849 +06 22 05.12 24.6w 15RF281 568 C~2nvt 2015 11 10.45634 00 31 56.516 +06 10 13.47 25.0w 15RF281 568 C~2nvt 2015 12 08.25463 00 30 59.174 +06 03 26.79 24.6w 15RF281 568 C~2nvt 2016 01 01.31705 00 30 53.149 +06 01 59.52 24.7w 15RF281 568 C~2nvt 2016 01 02.26815 00 30 53.820 +06 02 01.77 24.9w 15RF281 568 C~2nvt 2016 09 05.49045 00 39 11.375 +07 03 05.19 24.6w 15RF281 568 C~2nvt 2016 09 06.44465 00 39 08.141 +07 02 47.19 24.7w 15RF281 568 C~2nvt 2016 09 26.44346 00 37 54.831 +06 55 47.20 24.9w 15RF281 568 C~2nvt 2016 11 03.40304 00 35 34.671 +06 41 15.05 24.6w 15RF281 568 C~2nvt 2016 11 03.46810 00 35 34.462 +06 41 13.60 25.0w 15RF281 568 C~2nvt 2016 12 29.24794 00 34 07.379 +06 30 24.05 24.9w 15RF281 568 C~2nvt 2017 01 03.21812 00 34 10.443 +06 30 32.26 25.0w 15RF281 568 C~2nvt 2017 09 16.50931 00 41 54.875 +07 28 30.93 24.4w 15RF281 568 C~2nvt 2017 09 22.46275 00 41 32.608 +07 26 23.20 24.5w 15RF281 568 C~2nvt
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 0.0574 184.74 0.08 84.58 -0.06
3 0.0710 154.01 0.11 104.57 -0.03
4 0.1397 -416.28 -0.24 199.35 -0.08
5 0.1559 -643.81 -0.42 219.63 0.12
6 0.1583 -679.10 0.15 222.21 -0.09
7 0.1584 -681.31 0.04 222.33 -0.15
8 0.2080 -1560.86 0.01 274.95 0.01
9 0.2130 -1661.40 -0.04 279.47 0.08
10 0.2131 -1663.66 0.02 279.56 0.06
11 0.2132 -1665.97 0.03 279.69 0.08
12 0.2378 -2184.35 -0.00 299.46 0.02
13 0.2923 -3405.71 -0.03 328.54 0.07
14 0.2924 -3408.85 0.13 328.47 -0.07
15 0.2949 -3465.66 0.03 329.31 -0.02
16 0.3829 -5272.60 0.04 331.08 0.20
17 0.4590 -6219.69 0.00 295.82 -0.10
18 0.5249 -6336.87 -0.03 251.22 0.06
19 0.5275 -6326.77 -0.01 249.32 0.02
20 1.2044 1933.48 0.15 695.73 0.07
21 1.2070 1882.13 -0.01 698.04 -0.10
22 1.2617 713.33 -0.03 739.93 0.03
23 1.3656 -1549.07 -0.06 758.79 0.02
24 1.3658 -1552.50 -0.04 758.68 -0.07
25 1.5185 -3001.25 -0.02 673.01 -0.03
26 1.5321 -2956.04 0.07 662.54 -0.04
27 2.2338 4770.19 -0.02 1147.96 0.04
28 2.2501 4415.24 -0.01 1159.76 -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.
15RF281 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.400 46.447 46.354 ecceobj 0.172 0.175 0.169 incobj 7.476 7.476 7.476 qmin 36.985 36.973 37.190 qmax 55.843 55.826 55.454 amean 46.185 46.187 46.124 amin 45.778 45.779 45.725 amax 46.688 46.676 46.590 emean 0.181 0.183 0.177 emin 0.167 0.169 0.163 emax 0.197 0.197 0.191 imean 7.910 7.882 7.896 imin 7.128 7.169 7.169 imax 8.510 8.514 8.471 excite_mean 0.228 0.229 0.224 fracstop 1.000 1.000 1.000 cjmean 3.064 3.064 3.065 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 185.2 182.9 182.3 kozaiamp 179.9 180.0 180.0