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: 15RY279
# Created Wed Apr 24 01:17:24 2024
# Orbit generated from Bernstein formalism
# Fitting 33 observations of 33
# Arc: 2.44y
# First observation: 2015/07/14
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000117 0.026900 -0.000041 -0.008534 0.026231 0.000000
# WARNING -- MRQMIN stopped after 17 iterations
# Chi-squared of fit: 9.71 DOF: 60 RMS: 0.10
# Min/Max residuals: -0.37 0.18
# Exact a, adot, b, bdot, g, gdot:
1.618379E-05 2.666099E-02 -4.786465E-06 -8.564549E-03 2.610779E-02 3.692234E-03
# Covariance matrix:
1.9885E-13 5.7220E-14 9.5218E-15 -4.5431E-14 1.8068E-13 2.7453E-12
5.7220E-14 3.6391E-13 3.7031E-14 -1.6383E-13 3.2919E-13 9.8038E-12
9.5218E-15 3.7031E-14 1.1537E-13 -1.0943E-13 3.8073E-14 1.9899E-12
-4.5431E-14 -1.6383E-13 -1.0943E-13 2.3408E-13 -1.7097E-13 -8.5474E-12
1.8068E-13 3.2919E-13 3.8073E-14 -1.7097E-13 4.1203E-13 1.0252E-11
2.7453E-12 9.8038E-12 1.9899E-12 -8.5474E-12 1.0252E-11 5.0943E-10
# lat0 lon0 xBary yBary zBary JD0
0.998590 10.783162 0.998929 0.003479 -0.193864 2457218.046739
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 31.27043 +/- 0.128
Argument of Peri: 133.00904 +/- 0.210
Long of Asc Node: 192.39517 +/- 0.000
Inclination: 17.78779 +/- 0.001
Eccentricity: 0.17230396 +/- 0.0006
Semi-Major Axis: 44.62456563 +/- 0.0110
Time of Perihelion: 2447752.6855 +/- 38.7
Perihelion: 36.93557609 +/- 0.0302
Aphelion: 52.31355516 +/- 0.0316
Period (y) 298.1050 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.99448189 +/- 0.0009
Ecliptic Y 6.22038495 +/- 0.0002
Ecliptic Z 0.66740275 +/- 0.0000
Ecliptic XDOT -0.00012969 +/- 0.0000
Ecliptic YDOT 0.00281557 +/- 0.0000
Ecliptic ZDOT -0.00089119 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.50609393 +/- 0.0009
Geocenter to KBO 38.30274555 +/- 0.0009
# Hcoef: 8.25
The following table shows the complete astrometric record for 15RY279. 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 (15RY279) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.54595 00 38 04.534 +05 11 11.74 24.1r 15RY279 568 C~2nvo 2015 07 19.51084 00 38 03.122 +05 10 44.91 24.1r 15RY279 568 C~2nvo 2015 08 11.49932 00 37 27.958 +05 05 34.21 24.3r 15RY279 568 C~2nvo 2015 08 11.55875 00 37 27.811 +05 05 33.02 24.3r 15RY279 568 C~2nvo 2015 09 08.40498 00 35 52.253 +04 53 23.38 23.8r 15RY279 568 C~2nvo 2015 09 08.50910 00 35 51.809 +04 53 20.16 24.1r 15RY279 568 C~2nvo 2015 09 08.55273 00 35 51.623 +04 53 18.82 24.1r 15RY279 568 C~2nvo 2015 09 09.52831 00 35 47.498 +04 52 47.77 24.4w 15RY279 568 C~2nvo 2015 09 10.46916 00 35 43.483 +04 52 17.70 24.3w 15RY279 568 C~2nvo 2015 09 16.45837 00 35 17.148 +04 49 00.75 24.0w 15RY279 568 C~2nvo 2015 10 03.38583 00 33 58.371 +04 39 09.86 23.9w 15RY279 568 C~2nvo 2015 10 07.35453 00 33 39.610 +04 36 48.20 23.8r 15RY279 568 C~2nvo 2015 10 07.40769 00 33 39.364 +04 36 46.41 23.7r 15RY279 568 C~2nvo 2015 11 10.38589 00 31 15.638 +04 18 04.38 24.9w 15RY279 568 C~2nvo 2015 12 07.32615 00 30 11.522 +04 08 18.31 24.4w 15RY279 568 C~2nvo 2016 01 01.25515 00 30 11.420 +04 05 32.96 24.7w 15RY279 568 C~2nvo 2016 09 05.53675 00 42 31.300 +05 03 26.53 24.3w 15RY279 568 C~2nvo 2016 09 07.47613 00 42 23.406 +05 02 26.83 24.2w 15RY279 568 C~2nvo 2016 09 07.52244 00 42 23.213 +05 02 25.42 24.2w 15RY279 568 C~2nvo 2016 11 03.42043 00 38 08.110 +04 30 18.34 24.2w 15RY279 568 C~2nvo 2016 11 03.48549 00 38 07.828 +04 30 16.00 24.4w 15RY279 568 C~2nvo 2016 11 03.49709 00 38 07.782 +04 30 15.80 24.6w 15RY279 568 C~2nvo 2016 11 04.26545 00 38 04.853 +04 29 52.72 24.4w 15RY279 568 C~2nvo 2016 11 04.28299 00 38 04.787 +04 29 52.10 24.3w 15RY279 568 C~2nvo 2016 11 04.32471 00 38 04.616 +04 29 50.98 24.5w 15RY279 568 C~2nvo 2016 11 04.34222 00 38 04.552 +04 29 50.42 24.2w 15RY279 568 C~2nvo 2016 12 29.26158 00 36 30.555 +04 14 35.86 24.5w 15RY279 568 C~2nvo 2017 01 03.23211 00 36 35.917 +04 14 41.98 24.8w 15RY279 568 C~2nvo 2017 01 27.23800 00 37 35.268 +04 18 46.75 24.5w 15RY279 568 C~2nvo 2017 01 28.23385 00 37 38.852 +04 19 04.19 24.1w 15RY279 568 C~2nvo 2017 01 30.24057 00 37 46.374 +04 19 40.82 24.0w 15RY279 568 C~2nvo 2017 11 22.36455 00 43 32.132 +04 30 52.65 24.3w 15RY279 568 C~2nvo 2017 12 23.29716 00 42 48.183 +04 23 41.00 24.6w 15RY279 568 C~2nvo
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 -0.08
2 0.0136 -29.93 0.00 -16.40 -0.12
3 0.0765 -635.06 -0.05 -95.99 0.03
4 0.0767 -637.55 0.04 -96.22 -0.02
5 0.1529 -2237.41 -0.05 -206.23 0.02
6 0.1532 -2244.78 0.02 -206.58 0.05
7 0.1533 -2247.86 0.06 -206.72 0.08
8 0.1560 -2316.76 0.02 -211.03 -0.04
9 0.1586 -2383.77 -0.00 -215.09 -0.00
10 0.1750 -2823.19 0.01 -241.38 0.07
11 0.2213 -4138.71 0.02 -321.15 -0.02
12 0.2322 -4452.46 -0.05 -340.91 -0.02
13 0.2323 -4456.55 0.12 -341.11 0.02
14 0.3254 -6876.05 -0.08 -525.00 0.18
15 0.3991 -7990.11 0.05 -684.99 -0.01
16 0.4674 -8056.92 -0.02 -836.42 -0.02
17 1.1471 3485.56 -0.04 -1988.88 -0.06
18 1.1524 3353.62 0.01 -1997.73 -0.01
19 1.1526 3350.41 0.05 -1997.90 0.00
20 1.3083 -913.47 0.11 -2277.75 -0.01
21 1.3085 -918.27 -0.37 -2278.25 -0.20
22 1.3086 -918.98 -0.31 -2278.17 -0.05
23 1.3107 -968.33 0.08 -2282.21 -0.00
24 1.3107 -969.48 0.08 -2282.40 -0.10
25 1.3108 -972.27 0.04 -2282.42 0.06
26 1.3109 -973.37 0.10 -2282.56 0.00
27 1.4612 -2625.67 0.05 -2571.85 -0.01
28 1.4748 -2549.49 0.08 -2597.74 0.11
29 1.5406 -1636.74 0.02 -2721.22 0.10
30 1.5433 -1580.58 -0.15 -2726.22 0.14
31 1.5488 -1462.71 0.09 -2736.68 -0.18
32 2.3595 3559.66 -0.11 -4143.54 0.04
33 2.4442 2785.70 0.18 -4284.10 0.04
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.
15RY279 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.100 45.139 45.062 ecceobj 0.180 0.182 0.178 incobj 17.711 17.712 17.710 qmin 36.289 36.166 36.257 qmax 53.900 54.012 53.814 amean 44.851 44.863 44.788 amin 44.471 44.433 44.415 amax 45.322 45.325 45.245 emean 0.173 0.175 0.172 emin 0.159 0.159 0.157 emax 0.190 0.192 0.189 imean 18.067 18.058 18.026 imin 17.458 17.439 17.420 imax 18.620 18.608 18.588 excite_mean 0.355 0.356 0.354 fracstop 1.000 1.000 1.000 cjmean 2.956 2.956 2.957 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 178.9 179.2 179.2 kozaiamp 180.0 180.0 179.9