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: 15RB278
# Created Sat Apr 20 01:17:28 2024
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 2.42y
# First observation: 2015/06/23
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000100 0.017916 0.000040 0.009354 0.020339 0.000000
# Chi-squared of fit: 8.56 DOF: 58 RMS: 0.09
# Min/Max residuals: -0.31 0.21
# Exact a, adot, b, bdot, g, gdot:
1.381083E-05 1.771552E-02 7.127165E-06 9.324620E-03 2.021934E-02 6.360711E-03
# Covariance matrix:
1.8154E-13 2.3541E-14 -1.8341E-14 5.4556E-14 1.6107E-13 2.7720E-12
2.3541E-14 3.0547E-13 -5.6092E-14 1.9257E-13 2.8138E-13 9.6731E-12
-1.8341E-14 -5.6092E-14 1.2098E-13 -1.2846E-13 -6.5480E-14 -2.7870E-12
5.4556E-14 1.9257E-13 -1.2846E-13 2.8650E-13 2.1568E-13 9.9474E-12
1.6107E-13 2.8138E-13 -6.5480E-14 2.1568E-13 4.0336E-13 1.0868E-11
2.7720E-12 9.6731E-12 -2.7870E-12 9.9474E-12 1.0868E-11 4.9824E-10
# lat0 lon0 xBary yBary zBary JD0
1.936683 8.195872 1.009926 -0.003757 0.113859 2457197.056068
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 22.56030 +/- 0.045
Argument of Peri: 306.75318 +/- 0.093
Long of Asc Node: 3.33058 +/- 0.000
Inclination: 27.75437 +/- 0.001
Eccentricity: 0.43563880 +/- 0.0012
Semi-Major Axis: 75.19927059 +/- 0.0949
Time of Perihelion: 2442263.8878 +/- 8.5
Perihelion: 42.43955069 +/- 0.1028
Aphelion: 107.95899049 +/- 0.1621
Period (y) 652.1217 +/- 1.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 48.95219894 +/- 0.0015
Ecliptic Y 6.03120076 +/- 0.0002
Ecliptic Z 1.67183387 +/- 0.0001
Ecliptic XDOT 0.00046534 +/- 0.0000
Ecliptic YDOT 0.00248471 +/- 0.0000
Ecliptic ZDOT 0.00129108 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.35066557 +/- 0.0015
Geocenter to KBO 49.45760094 +/- 0.0016
# Hcoef: 7.62
The following table shows the complete astrometric record for 15RB278. 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 (15RB278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.55529 00 27 02.665 +05 01 48.58 24.5r 15RB278 568 C~2lVP 2015 07 14.60008 00 27 06.012 +05 05 06.16 24.8r 15RB278 568 C~2lVP 2015 07 19.57915 00 27 02.079 +05 05 22.45 24.6r 15RB278 568 C~2lVP 2015 08 13.47170 00 26 17.365 +05 03 57.65 24.4r 15RB278 568 C~2lVP 2015 08 20.40889 00 25 58.252 +05 02 48.62 24.3r 15RB278 568 C~2lVP 2015 08 20.45757 00 25 58.105 +05 02 48.06 24.8r 15RB278 568 C~2lVP 2015 09 07.55453 00 24 57.802 +04 58 32.42 24.6w 15RB278 568 C~2lVP 2015 09 09.38065 00 24 51.064 +04 58 01.56 24.6r 15RB278 568 C~2lVP 2015 09 09.42501 00 24 50.898 +04 58 00.79 24.9r 15RB278 568 C~2lVP 2015 09 09.46595 00 24 50.744 +04 58 00.13 24.5r 15RB278 568 C~2lVP 2015 09 10.48959 00 24 46.926 +04 57 42.55 24.9w 15RB278 568 C~2lVP 2015 09 18.44605 00 24 16.369 +04 55 18.53 25.0w 15RB278 568 C~2lVP 2015 10 08.33404 00 22 57.178 +04 48 46.19 24.1w 15RB278 568 C~2lVP 2015 10 08.38664 00 22 56.985 +04 48 45.15 25.0w 15RB278 568 C~2lVP 2015 10 09.30372 00 22 53.353 +04 48 26.66 24.8w 15RB278 568 C~2lVP 2015 12 08.22831 00 20 05.766 +04 34 23.37 24.8w 15RB278 568 C~2lVP 2016 01 01.29102 00 20 03.502 +04 35 14.37 25.0w 15RB278 568 C~2lVP 2016 09 05.49854 00 27 58.928 +05 53 06.07 25.1w 15RB278 568 C~2lVP 2016 09 06.45273 00 27 55.485 +05 52 50.87 24.7w 15RB278 568 C~2lVP 2016 09 06.49401 00 27 55.346 +05 52 50.23 24.7w 15RB278 568 C~2lVP 2016 09 26.45157 00 26 38.618 +05 46 49.84 24.6w 15RB278 568 C~2lVP 2016 09 26.45563 00 26 38.604 +05 46 49.90 24.7w 15RB278 568 C~2lVP 2016 09 26.53383 00 26 38.271 +05 46 48.22 24.7w 15RB278 568 C~2lVP 2016 10 30.34461 00 24 29.727 +05 35 48.03 24.8w 15RB278 568 C~2lVP 2016 11 03.29848 00 24 16.778 +05 34 39.25 24.8w 15RB278 568 C~2lVP 2016 11 03.35091 00 24 16.606 +05 34 38.34 24.9w 15RB278 568 C~2lVP 2016 12 24.25721 00 22 53.733 +05 27 54.28 24.5w 15RB278 568 C~2lVP 2016 12 24.27988 00 22 53.708 +05 27 54.36 24.6w 15RB278 568 C~2lVP 2017 01 26.23123 00 23 41.709 +05 34 08.50 24.9w 15RB278 568 C~2lVP 2017 09 16.53261 00 30 13.698 +06 43 35.47 24.3w 15RB278 568 C~2lVP 2017 09 22.48632 00 29 50.567 +06 41 46.68 24.8w 15RB278 568 C~2lVP 2017 11 22.35339 00 26 20.596 +06 23 30.12 24.8w 15RB278 568 C~2lVP
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 0.01 0.00 0.03
2 0.0576 124.03 0.19 161.73 -0.05
3 0.0712 76.49 0.02 199.92 -0.08
4 0.1394 -570.69 -0.06 386.17 -0.01
5 0.1584 -860.28 0.08 435.73 0.04
6 0.1585 -862.52 0.06 436.09 0.03
7 0.2081 -1791.25 -0.05 557.97 0.05
8 0.2131 -1895.94 -0.15 569.51 0.03
9 0.2132 -1898.52 -0.13 569.78 0.01
10 0.2133 -1900.90 -0.10 570.09 0.04
11 0.2161 -1960.26 0.02 576.54 0.03
12 0.2379 -2436.66 -0.03 625.20 0.04
13 0.2923 -3679.09 -0.10 734.25 0.03
14 0.2925 -3682.15 0.16 734.44 -0.07
15 0.2950 -3739.34 -0.03 739.00 -0.06
16 0.4591 -6375.23 0.01 960.20 0.02
17 0.5249 -6386.03 0.10 1020.48 -0.04
18 1.2045 1987.73 -0.04 2495.45 -0.04
19 1.2071 1934.52 -0.14 2501.77 -0.03
20 1.2072 1932.36 0.05 2502.00 -0.09
21 1.2619 738.03 0.07 2623.34 -0.01
22 1.2619 737.86 0.16 2623.48 0.11
23 1.2621 732.63 -0.12 2623.90 0.07
24 1.3547 -1290.85 0.03 2777.05 0.08
25 1.3655 -1495.62 0.06 2790.51 -0.13
26 1.3656 -1498.34 0.04 2790.69 -0.15
27 1.5050 -2794.73 0.07 2910.49 0.03
28 1.5051 -2795.04 -0.31 2910.71 0.21
29 1.5953 -1988.57 0.15 2969.87 -0.11
30 2.2340 5030.67 -0.08 4488.11 0.00
31 2.2503 4670.81 0.10 4523.83 0.06
32 2.4170 1361.46 -0.03 4751.33 -0.03
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.
15RB278 quality flag:2 Type: 4:1EEE 4:1EEE SCATNEAR axisobj 76.391 76.676 76.111 ecceobj 0.443 0.446 0.440 incobj 27.629 27.629 27.629 qmin 37.535 36.958 41.326 qmax 116.687 117.297 111.326 amean 75.870 75.870 75.495 amin 74.784 74.769 74.569 amax 77.441 77.432 76.828 emean 0.470 0.474 0.434 emin 0.432 0.432 0.418 emax 0.507 0.515 0.450 imean 26.156 25.930 28.207 imin 24.169 23.460 27.622 imax 28.283 28.280 28.840 excite_mean 0.645 0.645 0.641 fracstop 1.000 1.000 1.000 cjmean 2.910 2.909 2.914 libcent 0 86.4 88.7 -180.0 libamp 0 45.8 50.7 -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 308.1 319.5 144.1 kozaiamp 2.3 12.8 180.0