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: 15RF279
# Created Tue Jan 21 02:10:40 2025
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 2.42y
# First observation: 2015/06/23
# Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000033 0.029784 -0.000015 0.003190 0.027511 0.000000
# Chi-squared of fit: 5.40 DOF: 58 RMS: 0.07
# Min/Max residuals: -0.23 0.25
# Exact a, adot, b, bdot, g, gdot:
1.680441E-05 2.876353E-02 1.854447E-06 3.070809E-03 2.677792E-02 -5.186059E-03
# Covariance matrix:
1.6870E-13 1.6877E-14 -8.6117E-15 1.0737E-14 1.2884E-13 1.2973E-12
1.6877E-14 4.5896E-13 -3.2627E-14 7.2111E-14 3.2886E-13 8.6945E-12
-8.6117E-15 -3.2627E-14 1.0323E-13 -7.1754E-14 -2.9819E-14 -7.2270E-13
1.0737E-14 7.2111E-14 -7.1754E-14 9.0020E-14 5.6391E-14 1.6924E-12
1.2884E-13 3.2886E-13 -2.9819E-14 5.6391E-14 3.4877E-13 6.8022E-12
1.2973E-12 8.6945E-12 -7.2270E-13 1.6924E-12 6.8022E-12 2.0402E-10
# lat0 lon0 xBary yBary zBary JD0
3.071837 11.563034 1.001634 -0.009130 0.171950 2457197.106478
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 314.44479 +/- 0.021
Argument of Peri: 96.11144 +/- 0.049
Long of Asc Node: 343.76664 +/- 0.002
Inclination: 6.94794 +/- 0.000
Eccentricity: 0.24103607 +/- 0.0005
Semi-Major Axis: 42.77833649 +/- 0.0114
Time of Perihelion: 2470122.6223 +/- 2.8
Perihelion: 32.46721446 +/- 0.0232
Aphelion: 53.08945851 +/- 0.0257
Period (y) 279.7976 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.56226190 +/- 0.0008
Ecliptic Y 6.45937722 +/- 0.0002
Ecliptic Z 2.00132475 +/- 0.0000
Ecliptic XDOT -0.00112716 +/- 0.0000
Ecliptic YDOT 0.00276544 +/- 0.0000
Ecliptic ZDOT 0.00028517 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.18235939 +/- 0.0008
Geocenter to KBO 37.34420525 +/- 0.0008
# Hcoef: 8.25
The following table shows the complete astrometric record for 15RF279. 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 (15RF279) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.60570 00 37 41.050 +07 23 57.64 24.2r 15RF279 568 C~2lVT 2015 08 13.54561 00 37 10.916 +07 26 50.91 23.4r 15RF279 568 C~2lVT 2015 08 13.61739 00 37 10.727 +07 26 50.25 24.0r 15RF279 568 C~2lVT 2015 08 19.55480 00 36 52.134 +07 25 28.80 23.5r 15RF279 568 C~2lVT 2015 08 20.43022 00 36 49.178 +07 25 15.30 23.8r 15RF279 568 C~2lVT 2015 08 20.47949 00 36 49.015 +07 25 14.47 23.9r 15RF279 568 C~2lVT 2015 09 07.57672 00 35 36.823 +07 19 10.58 24.2w 15RF279 568 C~2lVT 2015 09 09.40442 00 35 28.561 +07 18 26.00 24.0r 15RF279 568 C~2lVT 2015 09 09.44553 00 35 28.373 +07 18 24.95 24.1r 15RF279 568 C~2lVT 2015 09 09.48644 00 35 28.183 +07 18 24.00 24.1r 15RF279 568 C~2lVT 2015 09 10.51074 00 35 23.479 +07 17 58.44 24.2w 15RF279 568 C~2lVT 2015 09 18.47260 00 34 45.602 +07 14 27.96 24.3w 15RF279 568 C~2lVT 2015 10 08.36042 00 33 05.617 +07 04 39.39 24.1w 15RF279 568 C~2lVT 2015 10 08.41303 00 33 05.342 +07 04 37.80 24.0w 15RF279 568 C~2lVT 2015 11 10.45634 00 30 35.540 +06 48 32.27 24.5w 15RF279 568 C~2lVT 2015 12 08.25463 00 29 24.127 +06 39 38.70 24.4w 15RF279 568 C~2lVT 2016 01 01.31706 00 29 22.324 +06 37 55.56 24.2w 15RF279 568 C~2lVT 2016 01 02.26815 00 29 23.502 +06 37 59.25 24.0w 15RF279 568 C~2lVT 2016 09 05.57499 00 41 44.157 +08 09 50.94 15RF279 568 C~2lVT 2016 09 06.52410 00 41 39.982 +08 09 29.16 15RF279 568 C~2lVT 2016 09 06.56619 00 41 39.796 +08 09 28.08 15RF279 568 C~2lVT 2016 09 27.47990 00 39 58.994 +08 00 10.02 24.1w 15RF279 568 C~2lVT 2016 11 03.41462 00 36 59.207 +07 41 34.07 15RF279 568 C~2lVT 2016 11 03.47967 00 36 58.922 +07 41 32.14 15RF279 568 C~2lVT 2016 12 29.25523 00 35 10.408 +07 27 00.08 24.4w 15RF279 568 C~2lVT 2017 01 03.22553 00 35 15.598 +07 27 11.75 24.2w 15RF279 568 C~2lVT 2017 01 27.27188 00 36 16.151 +07 32 00.24 24.1w 15RF279 568 C~2lVT 2017 01 28.26808 00 36 19.853 +07 32 20.06 15RF279 568 C~2lVT 2017 09 16.50002 00 47 02.733 +08 55 59.09 24.0w 15RF279 568 C~2lVT 2017 09 17.39915 00 46 58.407 +08 55 35.62 15RF279 568 C~2lVT 2017 09 22.45345 00 46 33.510 +08 53 18.84 24.1w 15RF279 568 C~2lVT 2017 11 22.33845 00 41 54.461 +08 24 05.02 24.1w 15RF279 568 C~2lVT
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 0.04 0.00 -0.01
2 0.1395 -344.02 -0.18 335.52 -0.02
3 0.1397 -346.87 0.25 336.02 0.02
4 0.1559 -633.17 -0.08 369.91 -0.03
5 0.1583 -678.90 -0.12 374.79 0.09
6 0.1584 -681.46 -0.01 374.98 -0.02
7 0.2080 -1811.96 0.00 463.34 0.04
8 0.2130 -1942.52 -0.06 470.81 0.05
9 0.2131 -1945.50 -0.03 470.95 -0.01
10 0.2132 -1948.48 0.00 471.19 0.05
11 0.2160 -2022.88 0.03 475.28 0.02
12 0.2378 -2623.88 0.14 504.10 -0.04
13 0.2923 -4223.89 0.00 551.02 -0.04
14 0.2924 -4228.28 -0.04 551.18 0.01
15 0.3829 -6660.57 0.08 547.70 -0.23
16 0.4590 -7850.23 -0.06 480.01 0.01
17 0.5249 -7915.93 -0.07 395.96 0.08
18 0.5275 -7898.33 0.08 392.37 -0.02
19 1.2046 4403.71 -0.03 1117.33 0.07
20 1.2072 4338.10 0.01 1121.51 0.05
21 1.2073 4335.14 0.03 1121.59 -0.07
22 1.2645 2738.62 0.03 1193.71 0.01
23 1.3657 -156.76 0.06 1216.00 0.05
24 1.3658 -161.41 -0.05 1215.89 -0.00
25 1.5185 -1988.06 -0.05 1049.75 0.05
26 1.5322 -1912.51 -0.03 1030.03 0.09
27 1.5980 -971.09 0.10 940.38 0.00
28 1.6007 -912.68 -0.03 936.93 -0.15
29 2.2338 9841.03 -0.05 1829.06 -0.04
30 2.2363 9772.68 0.04 1832.26 -0.03
31 2.2501 9378.70 0.03 1849.20 0.09
32 2.4168 4878.51 -0.05 1844.03 -0.05
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.
15RF279 quality flag:1 Type: CENTAURS SCATNEAR CENTAURR axisobj 43.229 43.254 43.204 ecceobj 0.244 0.245 0.243 incobj 6.920 6.920 6.920 qmin 30.128 30.621 29.413 qmax 58.296 63.415 57.063 amean 43.052 43.290 42.413 amin 41.121 41.634 38.678 amax 44.775 47.342 44.677 emean 0.250 0.233 0.250 emin 0.205 0.180 0.200 emax 0.304 0.344 0.290 imean 12.419 11.309 10.646 imin 7.910 7.910 7.910 imax 14.675 13.722 14.105 excite_mean 0.330 0.307 0.311 fracstop 1.000 1.000 0.366 cjmean 2.955 2.976 2.969 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 183.4 177.5 179.2 kozaiamp 179.9 180.0 179.9