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: 15RG278
# Created Sun Dec 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 2.25y
# First observation: 2015/06/23
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000093 0.031651 0.000004 0.001563 0.027970 0.000000
# Chi-squared of fit: 9.39 DOF: 54 RMS: 0.10
# Min/Max residuals: -0.27 0.25
# Exact a, adot, b, bdot, g, gdot:
1.795655E-05 3.082237E-02 7.009300E-07 1.520525E-03 2.741978E-02 1.529355E-03
# Covariance matrix:
1.8939E-13 -3.3451E-14 -4.5470E-15 2.0392E-15 1.2868E-13 6.8250E-13
-3.3451E-14 5.4825E-13 -1.9001E-14 4.0675E-14 3.3721E-13 1.0385E-11
-4.5470E-15 -1.9001E-14 1.1707E-13 -8.9705E-14 -1.7500E-14 -4.3159E-13
2.0392E-15 4.0675E-14 -8.9705E-14 1.1534E-13 2.7432E-14 9.9520E-13
1.2868E-13 3.3721E-13 -1.7500E-14 2.7432E-14 3.7311E-13 7.2149E-12
6.8250E-13 1.0385E-11 -4.3159E-13 9.9520E-13 7.2149E-12 2.5259E-10
# lat0 lon0 xBary yBary zBary JD0
2.084191 10.154046 1.005356 -0.005327 0.148869 2457197.020648
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 5.94325 +/- 0.143
Argument of Peri: 27.50879 +/- 0.204
Long of Asc Node: 332.67403 +/- 0.006
Inclination: 3.56556 +/- 0.000
Eccentricity: 0.16545817 +/- 0.0001
Semi-Major Axis: 43.46794533 +/- 0.0037
Time of Perihelion: 2455462.3809 +/- 41.6
Perihelion: 36.27581875 +/- 0.0062
Aphelion: 50.66007191 +/- 0.0069
Period (y) 286.5906 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 35.90214315 +/- 0.0008
Ecliptic Y 5.40986253 +/- 0.0001
Ecliptic Z 1.32642774 +/- 0.0000
Ecliptic XDOT -0.00040025 +/- 0.0000
Ecliptic YDOT 0.00304909 +/- 0.0000
Ecliptic ZDOT 0.00015734 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.33166533 +/- 0.0008
Geocenter to KBO 36.47002775 +/- 0.0008
# Hcoef: 8.91
The following table shows the complete astrometric record for 15RG278. 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 (15RG278) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.51987 00 34 02.209 +05 56 15.68 24.2r 15RG278 568 C~2lVP 2015 07 19.59146 00 34 17.174 +05 59 54.73 24.9r 15RG278 568 C~2lVP 2015 08 13.47989 00 33 30.642 +05 56 46.81 24.4r 15RG278 568 C~2lVP 2015 08 19.58390 00 33 11.186 +05 55 06.27 24.7r 15RG278 568 C~2lVP 2015 08 19.61259 00 33 11.094 +05 55 05.56 25.1r 15RG278 568 C~2lVP 2015 09 07.56274 00 31 54.898 +05 47 58.89 24.4w 15RG278 568 C~2lVP 2015 09 09.39169 00 31 46.534 +05 47 10.14 24.4r 15RG278 568 C~2lVP 2015 09 09.43322 00 31 46.346 +05 47 09.00 24.6r 15RG278 568 C~2lVP 2015 09 09.47414 00 31 46.150 +05 47 07.87 24.4r 15RG278 568 C~2lVP 2015 09 10.49775 00 31 41.403 +05 46 39.97 24.7w 15RG278 568 C~2lVP 2015 09 18.45683 00 31 03.187 +05 42 52.54 24.5w 15RG278 568 C~2lVP 2015 09 18.49367 00 31 02.993 +05 42 51.47 24.9w 15RG278 568 C~2lVP 2015 10 09.31421 00 29 17.868 +05 32 02.43 24.8w 15RG278 568 C~2lVP 2015 11 10.43997 00 26 54.053 +05 16 17.21 24.5w 15RG278 568 C~2lVP 2015 12 08.23879 00 25 46.091 +05 07 55.47 24.8w 15RG278 568 C~2lVP 2016 01 01.30142 00 25 48.655 +05 06 59.67 24.9w 15RG278 568 C~2lVP 2016 09 05.47427 00 38 34.899 +06 36 16.01 15RG278 568 C~2lVP 2016 09 05.49045 00 38 34.824 +06 36 15.42 15RG278 568 C~2lVP 2016 09 06.42847 00 38 30.670 +06 35 51.74 15RG278 568 C~2lVP 2016 09 06.44465 00 38 30.599 +06 35 51.44 15RG278 568 C~2lVP 2016 09 06.46893 00 38 30.486 +06 35 50.81 15RG278 568 C~2lVP 2016 09 06.48592 00 38 30.412 +06 35 50.37 15RG278 568 C~2lVP 2016 09 26.43536 00 36 54.350 +06 26 21.87 24.5w 15RG278 568 C~2lVP 2016 10 26.40787 00 34 25.742 +06 10 43.92 24.3r 15RG278 568 C~2lVQ 2016 10 26.47363 00 34 25.443 +06 10 41.80 24.3r 15RG278 568 C~2lVQ 2016 11 03.40304 00 33 50.849 +06 06 52.54 15RG278 568 C~2lVQ 2016 11 03.46810 00 33 50.572 +06 06 50.71 15RG278 568 C~2lVQ 2017 01 02.29442 00 32 14.064 +05 53 55.30 25.0w 15RG278 568 C~2lVQ 2017 09 16.50931 00 44 19.893 +07 18 49.47 24.6w 15RG278 568 C~2lVQ 2017 09 22.46275 00 43 50.799 +07 15 58.18 24.6w 15RG278 568 C~2lVQ
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 -0.04 0.00 0.04
2 0.0714 291.46 0.08 113.49 -0.13
3 0.1395 -420.65 -0.27 214.06 0.05
4 0.1562 -727.07 0.04 236.01 0.25
5 0.1563 -728.61 0.09 235.90 0.03
6 0.2082 -1941.76 -0.03 292.07 0.01
7 0.2132 -2075.70 -0.06 296.52 0.13
8 0.2133 -2078.73 0.03 296.58 0.07
9 0.2134 -2081.86 -0.02 296.70 0.07
10 0.2162 -2157.97 0.08 299.02 -0.02
11 0.2380 -2771.88 0.20 315.21 -0.25
12 0.2381 -2774.96 0.09 315.37 -0.18
13 0.2951 -4473.53 -0.10 339.41 0.00
14 0.3831 -6821.70 -0.08 322.00 -0.21
15 0.4592 -7954.12 0.07 264.10 -0.03
16 0.5251 -7941.08 -0.07 197.63 -0.03
17 1.2045 4682.64 0.10 611.05 0.10
18 1.2046 4681.38 0.00 610.94 -0.05
19 1.2071 4615.12 -0.10 613.40 0.01
20 1.2072 4614.03 -0.02 613.54 0.10
21 1.2073 4612.23 -0.06 613.62 0.11
22 1.2073 4611.05 -0.02 613.64 0.08
23 1.2619 3070.61 0.03 651.90 -0.11
24 1.3440 664.42 0.04 660.02 0.08
25 1.3442 659.48 0.07 659.82 -0.10
26 1.3659 94.96 -0.07 652.14 0.00
27 1.3660 90.44 -0.11 652.09 0.00
28 1.5298 -1538.33 0.09 506.77 0.09
29 2.2341 10416.70 0.07 957.76 -0.01
30 2.2504 9950.15 -0.06 968.32 -0.12
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.
15RG278 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.955 43.972 43.939 ecceobj 0.175 0.176 0.175 incobj 3.555 3.555 3.555 qmin 35.660 35.920 35.242 qmax 52.193 51.785 52.633 amean 43.727 43.727 43.727 amin 43.319 43.328 43.287 amax 44.188 44.176 44.217 emean 0.147 0.132 0.165 emin 0.098 0.076 0.123 emax 0.182 0.176 0.193 imean 5.973 6.962 4.306 imin 3.331 4.798 1.575 imax 8.921 9.801 7.389 excite_mean 0.183 0.182 0.184 fracstop 1.000 1.000 1.000 cjmean 3.057 3.058 3.057 libcent 0 187.0 177.6 179.1 libamp 0 105.8 149.9 98.1 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 76.8 82.7 91.3 kozaiamp 57.5 64.8 76.6