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: 15RW280
# Created Fri Nov 22 02:10:28 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 2.44y
# First observation: 2015/07/14
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000129 0.015807 -0.000026 -0.009975 0.021646 0.000000
# Chi-squared of fit: 13.97 DOF: 48 RMS: 0.13
# Min/Max residuals: -0.38 0.27
# Exact a, adot, b, bdot, g, gdot:
1.176312E-05 1.568526E-02 -8.578456E-06 -9.949623E-03 2.160711E-02 1.523636E-03
# Covariance matrix:
2.5235E-13 3.5504E-14 3.0885E-14 -1.5258E-13 2.6532E-13 7.5221E-12
3.5504E-14 2.0113E-13 1.6331E-14 -8.5984E-14 2.0105E-13 4.2604E-12
3.0885E-14 1.6331E-14 1.3115E-13 -1.7989E-13 7.0570E-14 5.0111E-12
-1.5258E-13 -8.5984E-14 -1.7989E-13 5.6842E-13 -3.3933E-13 -2.2454E-11
2.6532E-13 2.0105E-13 7.0570E-14 -3.3933E-13 4.9970E-13 1.6691E-11
7.5221E-12 4.2604E-12 5.0111E-12 -2.2454E-11 1.6691E-11 1.0977E-09
# lat0 lon0 xBary yBary zBary JD0
2.176219 9.382277 0.993636 0.008436 -0.219201 2457218.113129
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 150.40453 +/- 0.587
Argument of Peri: 18.60243 +/- 0.584
Long of Asc Node: 191.56958 +/- 0.000
Inclination: 32.43085 +/- 0.001
Eccentricity: 0.14177394 +/- 0.0006
Semi-Major Axis: 41.25120647 +/- 0.0080
Time of Perihelion: 2416779.7486 +/- 157.4
Perihelion: 35.40286033 +/- 0.0242
Aphelion: 47.09955262 +/- 0.0249
Period (y) 264.9495 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 46.00389552 +/- 0.0015
Ecliptic Y 6.59500752 +/- 0.0002
Ecliptic Z 1.75708367 +/- 0.0001
Ecliptic XDOT -0.00008871 +/- 0.0000
Ecliptic YDOT 0.00199387 +/- 0.0000
Ecliptic ZDOT -0.00125242 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.50741737 +/- 0.0015
Geocenter to KBO 46.28106999 +/- 0.0015
# Hcoef: 8.34
The following table shows the complete astrometric record for 15RW280. 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 (15RW280) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.61234 00 31 02.456 +05 43 06.13 25.7r 15RW280 568 C~2nvr 2015 08 13.51278 00 30 18.490 +05 36 42.72 25.3r 15RW280 568 C~2nvr 2015 08 20.41706 00 29 59.947 +05 34 16.21 25.2r 15RW280 568 C~2nvr 2015 08 20.46647 00 29 59.789 +05 34 15.11 25.1r 15RW280 568 C~2nvr 2015 09 07.56274 00 28 59.820 +05 26 28.66 25.4w 15RW280 568 C~2nvr 2015 09 09.39169 00 28 53.045 +05 25 35.82 24.8r 15RW280 568 C~2nvr 2015 09 09.43322 00 28 52.885 +05 25 34.71 25.0r 15RW280 568 C~2nvr 2015 09 09.47414 00 28 52.728 +05 25 33.45 24.6r 15RW280 568 C~2nvr 2015 09 10.49775 00 28 48.876 +05 25 03.59 25.1w 15RW280 568 C~2nvr 2015 09 18.45683 00 28 18.008 +05 21 02.82 25.4w 15RW280 568 C~2nvr 2015 09 18.49367 00 28 17.867 +05 21 01.91 25.3w 15RW280 568 C~2nvr 2015 10 08.34456 00 26 57.404 +05 10 24.75 25.2w 15RW280 568 C~2nvr 2015 10 08.39721 00 26 57.196 +05 10 23.13 25.1w 15RW280 568 C~2nvr 2015 10 09.31421 00 26 53.493 +05 09 53.01 24.8w 15RW280 568 C~2nvr 2015 12 08.23879 00 24 02.689 +04 43 38.25 25.2w 15RW280 568 C~2nvr 2016 01 01.30142 00 24 02.505 +04 40 03.25 24.8w 15RW280 568 C~2nvr 2016 09 05.48640 00 33 20.925 +05 16 45.76 25.5w 15RW280 568 C~2nvr 2016 09 06.44060 00 33 17.479 +05 16 18.66 25.3w 15RW280 568 C~2nvr 2016 09 06.48188 00 33 17.313 +05 16 17.58 25.3w 15RW280 568 C~2nvr 2016 09 26.43130 00 31 59.665 +05 06 08.31 25.2w 15RW280 568 C~2nvr 2016 10 30.35270 00 29 47.137 +04 48 13.02 25.0w 15RW280 568 C~2nvr 2016 11 03.31006 00 29 33.775 +04 46 18.17 25.2w 15RW280 568 C~2nvr 2016 11 03.36248 00 29 33.603 +04 46 17.00 25.5w 15RW280 568 C~2nvr 2016 12 25.23477 00 28 09.555 +04 30 29.99 25.2w 15RW280 568 C~2nvr 2017 01 02.28151 00 28 15.179 +04 30 01.67 24.5w 15RW280 568 C~2nvr 2017 11 22.34219 00 32 55.502 +04 28 07.52 25.3w 15RW280 568 C~2nvr 2017 12 23.31121 00 32 20.246 +04 20 38.76 25.4w 15RW280 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 -0.06 0.00 0.27
2 0.0819 -754.31 0.19 -93.36 0.11
3 0.1008 -1066.49 0.11 -118.69 -0.06
4 0.1009 -1069.09 -0.05 -118.77 0.03
5 0.1504 -2075.97 -0.05 -193.59 0.06
6 0.1555 -2189.80 -0.05 -202.15 -0.06
7 0.1556 -2192.44 -0.04 -202.22 0.03
8 0.1557 -2195.09 -0.08 -202.45 -0.03
9 0.1585 -2259.74 -0.08 -207.15 0.02
10 0.1803 -2778.43 -0.12 -246.04 -0.27
11 0.1804 -2780.72 0.08 -246.05 -0.10
12 0.2347 -4137.00 -0.07 -355.62 0.09
13 0.2349 -4140.49 0.09 -355.87 0.13
14 0.2374 -4203.24 -0.06 -361.63 -0.06
15 0.4014 -7173.27 0.12 -795.56 0.05
16 0.4673 -7261.26 0.22 -991.94 -0.09
17 1.1468 1277.71 0.17 -2267.20 0.05
18 1.1494 1219.72 0.13 -2271.85 -0.00
19 1.1495 1217.02 -0.01 -2271.87 0.16
20 1.2042 -89.23 -0.06 -2375.10 0.06
21 1.2970 -2333.56 -0.38 -2582.06 -0.11
22 1.3079 -2562.47 -0.06 -2608.72 -0.29
23 1.3080 -2565.29 0.13 -2608.78 -0.01
24 1.4500 -4094.43 -0.20 -2982.37 -0.18
25 1.4721 -4028.36 0.01 -3041.65 -0.03
26 2.3593 -220.51 -0.06 -4801.02 0.17
27 2.4441 -882.12 0.18 -5005.98 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.
15RW280 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.543 41.569 41.519 ecceobj 0.135 0.136 0.133 incobj 32.257 32.259 32.255 qmin 34.413 34.206 34.219 qmax 48.732 48.812 48.773 amean 41.400 41.387 41.357 amin 41.072 41.046 41.028 amax 41.783 41.769 41.727 emean 0.146 0.150 0.149 emin 0.127 0.132 0.130 emax 0.167 0.169 0.170 imean 32.305 32.256 32.236 imin 31.920 31.790 31.769 imax 32.739 32.696 32.685 excite_mean 0.554 0.555 0.554 fracstop 1.000 1.000 1.000 cjmean 2.689 2.689 2.689 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 168.7 170.6 171.5 kozaiamp 179.9 179.9 179.9