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: 15RW278
# Created Fri Apr 19 01:17:38 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 1.60y
# First observation: 2015/06/23
# Last observation: 2017/01/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000076 0.029051 0.000000 -0.000585 0.027568 0.000000
# Chi-squared of fit: 5.63 DOF: 52 RMS: 0.08
# Min/Max residuals: -0.25 0.25
# Exact a, adot, b, bdot, g, gdot:
1.634502E-05 2.835391E-02 -6.454930E-07 -5.757377E-04 2.704939E-02 -4.941625E-04
# Covariance matrix:
2.6029E-13 1.2080E-13 -2.0549E-15 -6.2989E-15 3.0276E-13 1.0996E-11
1.2080E-13 6.7525E-13 -2.9005E-15 -1.6654E-14 6.2520E-13 2.8823E-11
-2.0549E-15 -2.9005E-15 1.3149E-13 -1.1324E-13 -4.1715E-15 -9.7989E-14
-6.2989E-15 -1.6654E-14 -1.1324E-13 1.5531E-13 -1.8912E-14 -1.0215E-12
3.0276E-13 6.2520E-13 -4.1715E-15 -1.8912E-14 7.7070E-13 3.2817E-11
1.0996E-11 2.8823E-11 -9.7989E-14 -1.0215E-12 3.2817E-11 1.7601E-09
# lat0 lon0 xBary yBary zBary JD0
1.037483 7.821639 1.010632 -0.001854 0.107472 2457197.046308
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 299.07680 +/- 0.569
Argument of Peri: 203.69749 +/- 0.728
Long of Asc Node: 228.73826 +/- 0.020
Inclination: 1.54000 +/- 0.001
Eccentricity: 0.05134376 +/- 0.0014
Semi-Major Axis: 37.73600804 +/- 0.0052
Time of Perihelion: 2471519.3911 +/- 133.7
Perihelion: 35.79849934 +/- 0.0518
Aphelion: 39.67351675 +/- 0.0519
Period (y) 231.8153 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.64701366 +/- 0.0012
Ecliptic Y 4.01492125 +/- 0.0002
Ecliptic Z 0.66942230 +/- 0.0000
Ecliptic XDOT -0.00044153 +/- 0.0000
Ecliptic YDOT 0.00283029 +/- 0.0000
Ecliptic ZDOT -0.00005910 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.87236539 +/- 0.0012
Geocenter to KBO 36.96940640 +/- 0.0012
# Hcoef: 8.69
The following table shows the complete astrometric record for 15RW278. 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 (15RW278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.54553 00 27 05.471 +04 03 22.73 24.4r 15RW278 568 C~2lVS 2015 07 14.59595 00 27 17.548 +04 05 12.11 24.1r 15RW278 568 C~2lVS 2015 07 19.57506 00 27 14.111 +04 04 57.32 24.5r 15RW278 568 C~2lVS 2015 08 11.48002 00 26 29.175 +04 00 37.85 24.5r 15RW278 568 C~2lVS 2015 08 11.52446 00 26 29.042 +04 00 37.01 24.6r 15RW278 568 C~2lVS 2015 09 08.38855 00 24 41.369 +03 49 24.34 24.5r 15RW278 568 C~2lVS 2015 09 08.49278 00 24 40.879 +03 49 21.32 24.1r 15RW278 568 C~2lVS 2015 09 08.53500 00 24 40.682 +03 49 20.20 24.3r 15RW278 568 C~2lVS 2015 09 09.51188 00 24 36.152 +03 48 51.25 24.4w 15RW278 568 C~2lVS 2015 09 16.43732 00 24 03.109 +03 45 19.64 25.1w 15RW278 568 C~2lVS 2015 10 03.36404 00 22 38.584 +03 36 10.98 24.6w 15RW278 568 C~2lVS 2015 11 07.22874 00 20 00.527 +03 18 32.79 24.6w 15RW278 568 C~2lVS 2015 11 07.28121 00 20 00.329 +03 18 31.39 24.4w 15RW278 568 C~2lVS 2015 11 10.35840 00 19 49.346 +03 17 15.51 24.6w 15RW278 568 C~2lVS 2015 12 07.30512 00 18 46.699 +03 09 37.64 24.8w 15RW278 568 C~2lVS 2016 01 01.23433 00 18 51.878 +03 09 15.43 24.5w 15RW278 568 C~2lVS 2016 09 05.47023 00 31 03.462 +04 28 07.31 24.5w 15RW278 568 C~2lVS 2016 09 06.42437 00 30 59.182 +04 27 40.25 24.5w 15RW278 568 C~2lVS 2016 09 06.46487 00 30 58.994 +04 27 39.05 24.5w 15RW278 568 C~2lVS 2016 09 25.31706 00 29 28.201 +04 17 58.06 24.9w 15RW278 568 C~2lVS 2016 09 25.34339 00 29 28.051 +04 17 57.31 24.3w 15RW278 568 C~2lVS 2016 09 25.44037 00 29 27.532 +04 17 54.17 24.2w 15RW278 568 C~2lVS 2016 09 26.42319 00 29 22.600 +04 17 22.24 24.2w 15RW278 568 C~2lVS 2016 10 30.34865 00 26 39.283 +03 59 25.21 24.5w 15RW278 568 C~2lVS 2016 11 03.30427 00 26 23.002 +03 57 34.83 24.8w 15RW278 568 C~2lVS 2016 11 03.35669 00 26 22.797 +03 57 33.36 24.9w 15RW278 568 C~2lVS 2016 12 24.27431 00 24 46.371 +03 45 33.50 24.7w 15RW278 568 C~2lVS 2017 01 02.26396 00 24 55.831 +03 46 14.62 24.6w 15RW278 568 C~2lVS 2017 01 29.22410 00 26 12.648 +03 53 33.90 24.0w 15RW278 568 C~2lVS
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 0.05 0.00 0.06
2 0.0576 209.21 -0.03 29.10 -0.05
3 0.0713 156.13 -0.02 35.83 -0.04
4 0.1340 -564.05 0.02 63.14 0.02
5 0.1341 -566.21 0.02 63.16 -0.03
6 0.2104 -2312.29 -0.01 82.58 -0.09
7 0.2107 -2320.22 0.01 82.71 -0.06
8 0.2108 -2323.37 0.08 82.85 0.04
9 0.2135 -2397.10 0.01 83.09 -0.02
10 0.2324 -2935.12 -0.08 84.53 -0.03
11 0.2788 -4314.65 -0.07 81.89 -0.01
12 0.3742 -6908.74 0.01 48.98 0.06
13 0.3744 -6912.03 -0.03 48.87 0.00
14 0.3828 -7093.31 0.02 44.50 0.11
15 0.4566 -8137.63 -0.05 -3.24 0.09
16 0.5248 -8075.16 0.09 -54.47 0.03
17 1.2044 3857.37 0.05 -40.18 0.01
18 1.2071 3787.86 -0.03 -39.84 0.02
19 1.2072 3784.80 -0.08 -39.84 -0.02
20 1.2588 2307.49 0.25 -38.58 -0.25
21 1.2589 2305.13 0.08 -38.39 -0.07
22 1.2591 2296.75 -0.23 -38.21 0.07
23 1.2618 2216.36 -0.01 -38.46 0.04
24 1.3547 -453.82 -0.13 -63.36 0.10
25 1.3655 -721.24 -0.04 -68.47 0.04
26 1.3657 -724.64 0.08 -68.60 -0.05
27 1.5051 -2334.88 -0.09 -159.05 0.05
28 1.5297 -2188.56 0.02 -177.32 -0.01
29 1.6035 -958.80 0.10 -228.53 -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.
15RW278 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 38.074 38.080 38.068 ecceobj 0.055 0.056 0.054 incobj 1.537 1.537 1.537 qmin 35.509 35.471 35.490 qmax 40.514 40.546 40.520 amean 37.899 37.904 37.894 amin 37.600 37.610 37.606 amax 38.198 38.205 38.190 emean 0.038 0.039 0.038 emin 0.016 0.015 0.014 emax 0.061 0.061 0.061 imean 2.462 2.462 2.463 imin 0.940 0.937 0.942 imax 3.541 3.542 3.543 excite_mean 0.059 0.060 0.059 fracstop 1.000 1.000 1.000 cjmean 3.035 3.035 3.035 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 186.8 186.2 186.7 kozaiamp 179.9 179.9 180.0