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: 15RX277 # Created Sun Dec 22 02:10:27 2024 # Orbit generated from Bernstein formalism # Fitting 24 observations of 24 # Arc: 2.19y # First observation: 2015/07/14 # Last observation: 2017/09/22 Preliminary a, adot, b, bdot, g, gdot: -0.000130 0.019049 0.000000 0.000011 0.021138 0.000000 # Chi-squared of fit: 4.94 DOF: 42 RMS: 0.08 # Min/Max residuals: -0.16 0.20 # Exact a, adot, b, bdot, g, gdot: 1.368315E-05 1.872339E-02 5.688425E-07 1.053447E-05 2.100678E-02 -3.539440E-03 # Covariance matrix: 2.4030E-13 -1.7937E-14 7.6021E-17 2.0015E-17 1.7402E-13 3.2830E-12 -1.7937E-14 3.5709E-13 7.9862E-17 1.1253E-16 2.4150E-13 1.1274E-11 7.6021E-17 7.9862E-17 1.3683E-13 -1.0170E-13 1.3976E-16 3.4309E-15 2.0015E-17 1.1253E-16 -1.0170E-13 1.3436E-13 9.6226E-17 5.9926E-15 1.7402E-13 2.4150E-13 1.3976E-16 9.6226E-17 3.5803E-13 1.1118E-11 3.2830E-12 1.1274E-11 3.4309E-15 5.9926E-15 1.1118E-11 5.8337E-10 # lat0 lon0 xBary yBary zBary JD0 -0.066538 8.946233 0.992233 -0.000163 -0.225679 2457218.038549 # Heliocentric elements and errors Epoch: 2457210.5000 = 2015/07/07 Mean Anomaly: 279.92631 +/- 0.150 Argument of Peri: 40.09911 +/- 0.783 Long of Asc Node: 71.56199 +/- 0.780 Inclination: 0.07369 +/- 0.001 Eccentricity: 0.20787062 +/- 0.0012 Semi-Major Axis: 47.49948217 +/- 0.0244 Time of Perihelion: 2483806.6676 +/- 45.4 Perihelion: 37.62573543 +/- 0.0605 Aphelion: 57.37322890 +/- 0.0645 Period (y) 327.3720 +/- 0.25 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 47.39821600 +/- 0.0013 Ecliptic Y 6.45801958 +/- 0.0002 Ecliptic Z -0.05520123 +/- 0.0000 Ecliptic XDOT -0.00083745 +/- 0.0000 Ecliptic YDOT 0.00233255 +/- 0.0000 Ecliptic ZDOT 0.00000197 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.83617819 +/- 0.0013 Geocenter to KBO 47.60368851 +/- 0.0014 # Hcoef: 7.86
The following table shows the complete astrometric record for 15RX277. 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 (15RX277) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.53776 00 32 58.747 +03 29 06.95 25.5r 15RX277 568 C~2lVO 2015 07 19.50263 00 32 56.104 +03 28 49.71 24.4r 15RX277 568 C~2lVO 2015 09 08.39268 00 30 57.171 +03 16 03.59 24.8r 15RX277 568 C~2lVO 2015 09 08.49686 00 30 56.800 +03 16 01.19 24.1r 15RX277 568 C~2lVO 2015 09 08.54047 00 30 56.638 +03 16 00.22 24.6r 15RX277 568 C~2lVO 2015 09 09.51600 00 30 53.106 +03 15 37.43 24.8w 15RX277 568 C~2lVO 2015 09 10.45696 00 30 49.657 +03 15 15.35 24.6w 15RX277 568 C~2lVO 2015 09 16.44258 00 30 27.207 +03 12 50.90 24.7w 15RX277 568 C~2lVO 2015 10 03.36936 00 29 20.527 +03 05 42.24 24.7w 15RX277 568 C~2lVO 2015 11 07.23400 00 27 13.025 +02 52 03.03 25.1w 15RX277 568 C~2lVO 2015 11 07.28647 00 27 12.853 +02 52 02.04 25.1w 15RX277 568 C~2lVO 2015 12 07.31039 00 26 08.627 +02 45 10.74 25.0w 15RX277 568 C~2lVO 2016 01 01.23954 00 26 05.592 +02 44 53.57 25.2w 15RX277 568 C~2lVO 2016 07 07.57912 00 36 56.334 +03 54 30.70 25.1w 15RX277 568 C~2lVO 2016 07 08.55858 00 36 56.488 +03 54 31.80 24.9w 15RX277 568 C~2lVO 2016 09 05.54486 00 35 05.204 +03 42 36.39 24.7w 15RX277 568 C~2lVO 2016 09 07.48422 00 34 58.327 +03 41 52.30 24.8w 15RX277 568 C~2lVO 2016 09 07.53054 00 34 58.147 +03 41 51.16 25.1w 15RX277 568 C~2lVO 2016 09 26.54877 00 33 45.406 +03 34 04.99 24.6w 15RX277 568 C~2lVO 2016 12 25.24114 00 29 56.758 +03 09 43.31 24.9w 15RX277 568 C~2lVO 2017 01 02.28800 00 30 01.722 +03 10 15.91 24.3w 15RX277 568 C~2lVO 2017 01 29.24345 00 30 55.274 +03 16 02.61 24.7w 15RX277 568 C~2lVO 2017 09 15.44947 00 38 32.590 +04 04 43.41 25.0w 15RX277 568 C~2lVO 2017 09 22.51463 00 38 05.205 +04 01 48.81 24.6w 15RX277 568 C~2lVO
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 0.08 0.00 -0.12
2 0.0136 -43.16 -0.05 -0.27 -0.01
3 0.1529 -1981.92 -0.16 -2.93 0.07
4 0.1532 -1987.97 0.01 -2.94 0.01
5 0.1533 -1990.59 0.01 -2.88 0.06
6 0.1560 -2048.19 0.08 -2.97 -0.01
7 0.1586 -2104.36 -0.06 -2.91 0.10
8 0.1750 -2470.34 0.11 -3.12 -0.01
9 0.2213 -3557.37 -0.02 -3.17 -0.01
10 0.3168 -5636.63 0.07 -1.95 -0.08
11 0.3169 -5639.39 -0.04 -1.85 0.01
12 0.3991 -6686.78 0.06 0.44 -0.02
13 0.4674 -6735.38 -0.12 2.64 -0.09
14 0.9830 3869.52 -0.01 2.80 -0.01
15 0.9857 3872.07 -0.14 2.91 0.18
16 1.1472 2058.97 0.02 -0.59 0.04
17 1.1525 1946.98 0.09 -0.66 0.05
18 1.1526 1944.05 -0.08 -0.64 0.04
19 1.2047 759.49 0.20 -0.95 -0.04
20 1.4502 -2963.47 0.10 4.31 -0.02
21 1.4723 -2882.28 -0.02 4.95 -0.13
22 1.5461 -2008.42 -0.15 7.37 -0.01
23 2.1736 5435.56 -0.07 1.15 -0.07
24 2.1930 4989.88 0.07 1.27 0.07
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.
15RX277 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.987 48.053 47.922 ecceobj 0.206 0.209 0.203 incobj 0.074 0.074 0.074 qmin 37.210 37.108 37.306 qmax 59.484 59.550 59.406 amean 47.798 47.798 47.798 amin 47.125 47.113 47.097 amax 48.593 48.588 48.619 emean 0.207 0.208 0.206 emin 0.190 0.192 0.188 emax 0.224 0.226 0.222 imean 1.677 1.695 1.672 imin 1.395 1.433 1.299 imax 2.001 1.992 2.055 excite_mean 0.209 0.210 0.208 fracstop 1.000 1.000 1.000 cjmean 3.094 3.093 3.095 libcent 0 180.3 180.4 180.8 libamp 0 157.6 157.2 162.2 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 234.3 235.6 201.8 kozaiamp 180.0 180.0 180.0