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: 15RJ279
# Created Mon Apr 28 01:10:34 2025
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 2.43y
# First observation: 2015/07/19
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000040 0.026877 0.000020 -0.015624 0.026568 0.000000
# Chi-squared of fit: 9.67 DOF: 52 RMS: 0.10
# Min/Max residuals: -0.23 0.22
# Exact a, adot, b, bdot, g, gdot:
1.514998E-05 2.643660E-02 -8.609974E-06 -1.539033E-02 2.627618E-02 -2.101120E-03
# Covariance matrix:
2.1577E-13 3.8887E-14 1.2981E-14 -6.8326E-14 1.7946E-13 2.0422E-12
3.8887E-14 3.3074E-13 5.2508E-14 -2.3603E-13 2.6556E-13 6.9635E-12
1.2981E-14 5.2508E-14 1.2153E-13 -1.2112E-13 4.4867E-14 1.5685E-12
-6.8326E-14 -2.3603E-13 -1.2112E-13 3.1118E-13 -2.1268E-13 -6.9077E-12
1.7946E-13 2.6556E-13 4.4867E-14 -2.1268E-13 3.5243E-13 6.3039E-12
2.0422E-12 6.9635E-12 1.5685E-12 -6.9077E-12 6.3039E-12 2.0342E-10
# lat0 lon0 xBary yBary zBary JD0
2.803254 10.148465 0.976003 0.014181 -0.287400 2457223.088139
# Heliocentric elements and errors
Epoch: 2457220.5000 = 2015/07/17
Mean Anomaly: 349.76402 +/- 0.046
Argument of Peri: 195.78396 +/- 0.100
Long of Asc Node: 193.44689 +/- 0.000
Inclination: 30.36066 +/- 0.001
Eccentricity: 0.33046107 +/- 0.0002
Semi-Major Axis: 56.31238479 +/- 0.0103
Time of Perihelion: 2461609.1548 +/- 19.8
Perihelion: 37.70333396 +/- 0.0138
Aphelion: 74.92143561 +/- 0.0182
Period (y) 422.5850 +/- 0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.86869225 +/- 0.0008
Ecliptic Y 5.78787113 +/- 0.0001
Ecliptic Z 1.86096655 +/- 0.0000
Ecliptic XDOT -0.00062564 +/- 0.0000
Ecliptic YDOT 0.00268046 +/- 0.0000
Ecliptic ZDOT -0.00161232 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.35362436 +/- 0.0008
Geocenter to KBO 38.05728519 +/- 0.0009
# Hcoef: 9.43
The following table shows the complete astrometric record for 15RJ279. 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 (15RJ279) followed by the observatory code and reference code for the source of the astrometry.
2015 07 19.58735 00 32 52.584 +06 35 47.11 25.4r 15RJ279 568 C~2lVU 2015 08 13.48399 00 32 11.269 +06 29 12.67 25.1r 15RJ279 568 C~2lVU 2015 08 20.42114 00 31 50.943 +06 26 20.45 25.0r 15RJ279 568 C~2lVU 2015 08 20.47055 00 31 50.801 +06 26 19.25 25.3r 15RJ279 568 C~2lVU 2015 09 07.56844 00 30 43.697 +06 17 04.47 25.3w 15RJ279 568 C~2lVU 2015 09 09.39585 00 30 36.020 +06 16 01.23 25.0r 15RJ279 568 C~2lVU 2015 09 09.43729 00 30 35.838 +06 15 59.93 25.2r 15RJ279 568 C~2lVU 2015 09 09.47825 00 30 35.660 +06 15 58.39 25.1r 15RJ279 568 C~2lVU 2015 09 10.50253 00 30 31.298 +06 15 22.40 25.4w 15RJ279 568 C~2lVU 2015 10 08.34986 00 28 23.928 +05 57 35.10 25.3w 15RJ279 568 C~2lVU 2015 10 08.40249 00 28 23.671 +05 57 32.69 25.8w 15RJ279 568 C~2lVU 2015 10 09.31945 00 28 19.426 +05 56 56.32 25.1w 15RJ279 568 C~2lVU 2015 11 15.26831 00 25 53.211 +05 34 06.70 25.3w 15RJ279 568 C~2lVU 2015 12 08.23879 00 25 08.091 +05 24 11.76 25.9w 15RJ279 568 C~2lVU 2016 01 01.30142 00 25 14.310 +05 19 22.55 25.9w 15RJ279 568 C~2lVU 2016 09 05.47427 00 37 56.179 +06 04 36.32 15RJ279 568 C~2lVU 2016 09 06.42847 00 37 52.303 +06 04 03.47 15RJ279 568 C~2lVU 2016 09 26.43536 00 36 23.776 +05 51 44.05 15RJ279 568 C~2lVU 2016 09 26.44752 00 36 23.709 +05 51 43.57 15RJ279 568 C~2lVU 2016 11 03.39147 00 33 35.358 +05 27 15.35 15RJ279 568 C~2lVU 2016 11 03.45641 00 33 35.094 +05 27 13.04 15RJ279 568 C~2lVU 2016 12 25.25214 00 32 03.772 +05 07 09.92 25.4w 15RJ279 568 C~2lVU 2016 12 29.24332 00 32 07.137 +05 06 42.46 26.4w 15RJ279 568 C~2lVU 2017 01 03.21350 00 32 13.575 +05 06 23.49 24.9w 15RJ279 568 C~2lVU 2017 09 16.50467 00 44 19.512 +05 44 34.02 25.4w 15RJ279 568 C~2lVU 2017 09 17.40380 00 44 15.543 +05 44 00.57 25.0w 15RJ279 568 C~2lVU 2017 09 22.45810 00 43 52.763 +05 40 49.30 25.8w 15RJ279 568 C~2lVU 2017 11 22.37200 00 39 40.730 +05 03 51.47 25.9w 15RJ279 568 C~2lVU 2017 12 23.29716 00 39 01.817 +04 54 12.46 15RJ279 568 C~2lVU
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 0.16 0.00 -0.13
2 0.0682 -721.34 -0.12 -119.70 0.18
3 0.0872 -1067.67 -0.23 -158.42 0.02
4 0.0873 -1070.09 0.07 -158.69 0.01
5 0.1368 -2208.30 0.12 -273.36 -0.03
6 0.1418 -2338.46 0.00 -286.23 0.01
7 0.1420 -2341.47 0.02 -286.35 0.16
8 0.1421 -2344.51 -0.03 -286.72 0.06
9 0.1449 -2418.49 0.07 -294.07 -0.02
10 0.2211 -4586.12 0.19 -522.68 0.11
11 0.2213 -4590.59 -0.04 -523.37 -0.13
12 0.2238 -4663.19 -0.02 -531.68 0.14
13 0.3249 -7211.78 -0.10 -923.70 -0.19
14 0.3878 -8067.60 -0.03 -1202.32 -0.09
15 0.4537 -8097.38 0.02 -1504.87 -0.00
16 1.1332 3427.23 0.04 -3499.78 0.08
17 1.1358 3361.14 -0.19 -3507.33 -0.23
18 1.1905 1855.77 0.01 -3669.27 -0.09
19 1.1906 1854.66 -0.12 -3669.32 -0.04
20 1.2945 -1033.77 0.10 -4031.09 -0.07
21 1.2946 -1038.30 -0.08 -4031.66 0.01
22 1.4365 -2766.70 0.18 -4600.15 0.22
23 1.4474 -2731.33 -0.01 -4645.23 -0.11
24 1.4610 -2650.40 -0.11 -4700.63 0.06
25 2.1627 8229.67 0.06 -6845.72 0.01
26 2.1651 8161.95 -0.00 -6853.45 0.04
27 2.1790 7773.54 0.07 -6897.08 0.05
28 2.3457 3436.77 -0.01 -7468.23 -0.02
29 2.4304 2674.40 -0.03 -7773.58 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.
15RJ279 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 57.051 57.070 57.032 ecceobj 0.339 0.339 0.338 incobj 30.238 30.238 30.238 qmin 35.951 36.068 35.825 qmax 78.015 78.073 78.194 amean 56.572 56.600 56.522 amin 55.985 56.000 55.886 amax 57.312 57.363 57.319 emean 0.343 0.343 0.344 emin 0.324 0.324 0.324 emax 0.363 0.361 0.364 imean 29.877 29.918 29.834 imin 29.336 29.453 29.256 imax 30.530 30.540 30.532 excite_mean 0.605 0.605 0.605 fracstop 1.000 1.000 1.000 cjmean 2.765 2.765 2.764 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 193.6 191.6 194.8 kozaiamp 179.9 180.0 180.0