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: 15RQ280
# Created Wed May 8 01:17:19 2024
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 24
# Arc: 2.42y
# First observation: 2015/06/23
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000120 0.022598 0.000014 0.000509 0.023230 0.000000
# Chi-squared of fit: 11.45 DOF: 40 RMS: 0.12
# Min/Max residuals: -0.30 0.31
# Exact a, adot, b, bdot, g, gdot:
1.459239E-05 2.240803E-02 6.391263E-07 5.055262E-04 2.315514E-02 -3.387735E-04
# Covariance matrix:
2.4181E-13 1.0089E-13 -7.6071E-15 8.8919E-15 2.7198E-13 5.7796E-12
1.0089E-13 8.3519E-13 -2.3600E-14 3.4672E-14 8.1622E-13 2.3756E-11
-7.6071E-15 -2.3600E-14 1.5846E-13 -1.1125E-13 -2.7969E-14 -7.5594E-13
8.8919E-15 3.4672E-14 -1.1125E-13 1.2833E-13 3.7989E-14 1.2494E-12
2.7198E-13 8.1622E-13 -2.7969E-14 3.7989E-14 9.7939E-13 2.5604E-11
5.7796E-12 2.3756E-11 -7.5594E-13 1.2494E-12 2.5604E-11 8.7502E-10
# lat0 lon0 xBary yBary zBary JD0
1.604467 8.477348 1.009354 -0.003236 0.118837 2457197.056068
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 296.86460 +/- 0.557
Argument of Peri: 117.96963 +/- 0.698
Long of Asc Node: 316.88034 +/- 0.020
Inclination: 2.09183 +/- 0.001
Eccentricity: 0.04377567 +/- 0.0012
Semi-Major Axis: 43.87627980 +/- 0.0063
Time of Perihelion: 2475807.6643 +/- 164.2
Perihelion: 41.95556610 +/- 0.0546
Aphelion: 45.79699350 +/- 0.0547
Period (y) 290.6383 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.72606311 +/- 0.0018
Ecliptic Y 5.34867392 +/- 0.0003
Ecliptic Z 1.20930217 +/- 0.0001
Ecliptic XDOT -0.00043431 +/- 0.0000
Ecliptic YDOT 0.00260818 +/- 0.0000
Ecliptic ZDOT 0.00005869 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.07652717 +/- 0.0018
Geocenter to KBO 43.18695030 +/- 0.0018
# Hcoef: 8.74
The following table shows the complete astrometric record for 15RQ280. 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 (15RQ280) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.55529 00 28 36.540 +04 50 09.98 24.7r 15RQ280 568 C~2nvr 2015 07 14.60008 00 28 45.901 +04 52 08.89 24.6r 15RQ280 568 C~2nvr 2015 08 13.47170 00 27 57.964 +04 48 16.49 24.4r 15RQ280 568 C~2nvr 2015 08 20.40889 00 27 37.808 +04 46 21.89 26.3r 15RQ280 568 C~2nvr 2015 08 20.45757 00 27 37.629 +04 46 20.72 24.5r 15RQ280 568 C~2nvr 2015 09 07.55453 00 26 32.806 +04 39 54.27 24.9w 15RQ280 568 C~2nvr 2015 09 09.38065 00 26 25.484 +04 39 09.63 24.7r 15RQ280 568 C~2nvr 2015 09 09.42501 00 26 25.302 +04 39 08.61 24.7r 15RQ280 568 C~2nvr 2015 09 09.46595 00 26 25.144 +04 39 07.49 25.1r 15RQ280 568 C~2nvr 2015 09 10.48959 00 26 20.996 +04 38 42.05 25.6w 15RQ280 568 C~2nvr 2015 09 18.44605 00 25 47.728 +04 35 16.20 25.0w 15RQ280 568 C~2nvr 2016 01 01.29102 00 21 18.297 +04 04 17.77 25.5w 15RQ280 568 C~2nvr 2016 09 05.48640 00 31 25.784 +05 13 10.03 25.6w 15RQ280 568 C~2nvr 2016 09 06.44060 00 31 22.074 +05 12 47.41 25.9w 15RQ280 568 C~2nvr 2016 09 06.48188 00 31 21.917 +05 12 46.34 25.5w 15RQ280 568 C~2nvr 2016 09 26.45157 00 29 58.040 +05 04 08.35 25.0w 15RQ280 568 C~2nvr 2016 09 26.45563 00 29 58.011 +05 04 08.09 25.5w 15RQ280 568 C~2nvr 2016 11 03.31006 00 27 21.571 +04 47 10.14 25.8w 15RQ280 568 C~2nvr 2016 11 03.36248 00 27 21.388 +04 47 08.93 25.4w 15RQ280 568 C~2nvr 2017 01 02.25760 00 26 00.879 +04 36 32.91 25.7w 15RQ280 568 C~2nvr 2017 01 26.24327 00 26 54.129 +04 41 23.26 25.6w 15RQ280 568 C~2nvr 2017 01 29.22410 00 27 04.002 +04 42 20.97 25.1w 15RQ280 568 C~2nvr 2017 05 30.60776 00 37 01.344 +05 46 39.18 24.5w 15RQ280 568 C~2nvr 2017 11 22.34219 00 31 12.239 +05 13 17.67 25.6w 15RQ280 568 C~2nvr
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 0.15 0.00 -0.06
2 0.0576 175.49 -0.17 54.01 0.14
3 0.1394 -574.54 0.11 123.46 -0.07
4 0.1584 -896.60 ( 0.76) 137.22 ( 0.18)
5 0.1585 -899.52 0.31 137.21 0.05
6 0.2081 -1942.45 0.14 165.35 -0.08
7 0.2131 -2060.66 -0.14 167.65 0.09
8 0.2132 -2063.56 -0.11 167.79 0.15
9 0.2133 -2066.18 -0.01 167.70 -0.01
10 0.2161 -2133.20 0.07 168.86 -0.04
11 0.2379 -2671.54 -0.17 176.63 -0.10
12 0.5249 -7110.67 -0.10 68.14 -0.10
13 1.2045 2868.36 -0.30 270.97 0.14
14 1.2071 2808.49 -0.17 272.01 -0.04
15 1.2072 2805.92 -0.09 271.95 -0.17
16 1.2619 1449.95 0.18 289.74 0.06
17 1.2619 1449.45 -0.03 289.67 -0.01
18 1.3655 -1100.48 0.05 277.47 0.06
19 1.3657 -1103.47 0.14 277.44 0.06
20 1.5296 -2460.57 0.24 169.26 0.05
21 1.5953 -1614.44 -0.20 121.02 -0.08
22 1.6035 -1456.05 -0.02 115.67 -0.08
23 1.9358 8269.31 0.11 150.65 0.01
24 2.4169 2685.36 0.03 357.69 0.02
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.
15RQ280 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.315 44.328 44.303 ecceobj 0.048 0.050 0.046 incobj 2.088 2.088 2.088 qmin 41.028 40.950 41.071 qmax 47.353 47.508 47.262 amean 44.081 44.093 44.069 amin 43.741 43.757 43.728 amax 44.440 44.462 44.428 emean 0.050 0.052 0.048 emin 0.034 0.036 0.032 emax 0.066 0.069 0.064 imean 3.477 3.474 3.480 imin 2.762 2.755 2.768 imax 4.096 4.096 4.094 excite_mean 0.079 0.080 0.078 fracstop 1.000 1.000 1.000 cjmean 3.095 3.095 3.095 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 181.2 181.0 180.9 kozaiamp 180.0 180.0 180.0