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: 15RA279
# Created Tue Jan 21 02:10:40 2025
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 35
# Arc: 2.25y
# First observation: 2015/06/23
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000038 0.012009 0.000049 -0.006965 0.019774 0.000000
# Chi-squared of fit: 10.30 DOF: 62 RMS: 0.10
# Min/Max residuals: -0.27 0.26
# Exact a, adot, b, bdot, g, gdot:
8.940069E-06 1.167592E-02 -5.222602E-06 -6.676296E-03 1.934278E-02 -1.207337E-02
# Covariance matrix:
1.7706E-13 -3.1665E-14 1.2927E-14 -5.0147E-14 1.4279E-13 3.7425E-12
-3.1665E-14 1.4622E-13 1.7595E-14 -6.7745E-14 1.0392E-13 5.0149E-12
1.2927E-14 1.7595E-14 1.0500E-13 -1.0749E-13 3.7527E-14 2.3205E-12
-5.0147E-14 -6.7745E-14 -1.0749E-13 2.2446E-13 -1.4486E-13 -8.9175E-12
1.4279E-13 1.0392E-13 3.7527E-14 -1.4486E-13 2.8875E-13 1.0754E-11
3.7425E-12 5.0149E-12 2.3205E-12 -8.9175E-12 1.0754E-11 6.5878E-10
# lat0 lon0 xBary yBary zBary JD0
0.189892 10.441449 1.004792 -0.000410 0.152692 2457197.098238
# Heliocentric elements and errors
Epoch: 2457190.5000 = 2015/06/17
Mean Anomaly: 320.31836 +/- 0.162
Argument of Peri: 304.16100 +/- 0.054
Long of Asc Node: 189.65045 +/- 0.000
Inclination: 30.35399 +/- 0.001
Eccentricity: 0.68968286 +/- 0.0010
Semi-Major Axis: 59.87542264 +/- 0.1551
Time of Perihelion: 2475843.9203 +/- 22.8
Perihelion: 18.58036972 +/- 0.0766
Aphelion: 101.17047557 +/- 0.2687
Period (y) 463.3200 +/- 1.80
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 50.87093012 +/- 0.0014
Ecliptic Y 8.35384361 +/- 0.0002
Ecliptic Z 0.17112712 +/- 0.0000
Ecliptic XDOT -0.00197950 +/- 0.0000
Ecliptic YDOT 0.00130991 +/- 0.0000
Ecliptic ZDOT -0.00095058 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 51.55257044 +/- 0.0014
Geocenter to KBO 51.69886895 +/- 0.0014
# Hcoef: 7.55
The following table shows the complete astrometric record for 15RA279. 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 (15RA279) followed by the observatory code and reference code for the source of the astrometry.
2015 06 23.59746 00 38 05.250 +04 18 31.24 24.9r 15RA279 568 C~2lVS 2015 07 14.54188 00 38 14.021 +04 18 05.81 25.0r 15RA279 568 C~2lVS 2015 07 19.50673 00 38 11.607 +04 17 30.92 25.0r 15RA279 568 C~2lVS 2015 08 11.49525 00 37 39.064 +04 12 31.89 24.5r 15RA279 568 C~2lVS 2015 08 11.53687 00 37 38.989 +04 12 31.01 25.8r 15RA279 568 C~2lVS 2015 09 08.40090 00 36 20.032 +04 02 12.77 24.7r 15RA279 568 C~2lVS 2015 09 08.50503 00 36 19.678 +04 02 10.43 24.3r 15RA279 568 C~2lVS 2015 09 08.54864 00 36 19.523 +04 02 09.10 24.1r 15RA279 568 C~2lVS 2015 09 09.52420 00 36 16.188 +04 01 43.77 24.9w 15RA279 568 C~2lVS 2015 09 10.46510 00 36 12.943 +04 01 19.07 24.8w 15RA279 568 C~2lVS 2015 09 16.45310 00 35 51.647 +03 58 38.15 25.0w 15RA279 568 C~2lVS 2015 10 03.37987 00 34 48.167 +03 50 41.00 24.5w 15RA279 568 C~2lVS 2015 10 07.34557 00 34 33.041 +03 48 47.34 24.6r 15RA279 568 C~2lVS 2015 10 07.36748 00 34 32.966 +03 48 46.72 24.3r 15RA279 568 C~2lVS 2015 10 07.40358 00 34 32.812 +03 48 45.82 24.7r 15RA279 568 C~2lVS 2015 11 07.24449 00 32 44.629 +03 35 01.35 24.8w 15RA279 568 C~2lVS 2015 11 07.29726 00 32 44.466 +03 35 00.20 24.9w 15RA279 568 C~2lVS 2015 11 10.38064 00 32 35.398 +03 33 49.28 25.4w 15RA279 568 C~2lVS 2015 12 07.32092 00 31 38.839 +03 25 51.99 24.5w 15RA279 568 C~2lVS 2016 01 01.24995 00 31 30.703 +03 23 15.64 25.6w 15RA279 568 C~2lVS 2016 07 07.57912 00 41 21.648 +04 13 01.43 25.2w 15RA279 568 C~2lVS 2016 07 08.55858 00 41 21.825 +04 12 57.98 24.8w 15RA279 568 C~2lVS 2016 09 05.53271 00 39 36.249 +03 57 19.36 23.1w 15RA279 568 C~2lVS 2016 09 05.54486 00 39 36.177 +03 57 18.44 24.7w 15RA279 568 C~2lVS 2016 09 07.47209 00 39 29.666 +03 56 28.25 24.9w 15RA279 568 C~2lVS 2016 09 07.48422 00 39 29.619 +03 56 27.99 24.8w 15RA279 568 C~2lVS 2016 09 07.51840 00 39 29.501 +03 56 27.06 24.7w 15RA279 568 C~2lVS 2016 09 07.53054 00 39 29.447 +03 56 26.74 25.0w 15RA279 568 C~2lVS 2016 09 26.57954 00 38 19.739 +03 47 37.78 24.8w 15RA279 568 C~2lVS 2016 11 03.40883 00 36 00.498 +03 30 08.47 24.7w 15RA279 568 C~2lVS 2016 11 03.47388 00 36 00.285 +03 30 06.94 24.7w 15RA279 568 C~2lVS 2016 12 29.25118 00 34 32.105 +03 17 06.29 23.8w 15RA279 568 C~2lVT 2017 01 03.22129 00 34 34.977 +03 17 06.04 25.3w 15RA279 568 C~2lVT 2017 09 15.44947 00 42 16.113 +03 46 55.74 24.7w 15RA279 568 C~2lVT 2017 09 22.51463 00 41 49.695 +03 43 34.69 25.0w 15RA279 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 0.12 0.00 -0.05
2 0.0573 110.70 -0.10 -74.86 -0.04
3 0.0709 63.80 -0.06 -92.79 -0.04
4 0.1339 -501.29 -0.01 -176.84 0.07
5 0.1340 -502.67 0.16 -177.21 -0.16
6 0.2103 -1831.88 -0.27 -282.01 -0.18
7 0.2106 -1837.67 -0.02 -282.09 0.10
8 0.2107 -1840.33 -0.14 -282.40 -0.06
9 0.2134 -1896.17 0.03 -286.09 -0.03
10 0.2159 -1950.53 0.12 -289.73 -0.06
11 0.2323 -2306.83 -0.00 -312.51 0.06
12 0.2787 -3368.11 0.16 -377.84 0.10
13 0.2895 -3621.03 -0.11 -393.32 0.03
14 0.2896 -3622.30 0.03 -393.45 -0.02
15 0.2897 -3624.78 -0.12 -393.37 0.18
16 0.3741 -5438.83 -0.02 -514.10 -0.10
17 0.3743 -5441.52 0.00 -514.19 -0.01
18 0.3827 -5594.35 0.09 -525.93 0.26
19 0.4565 -6561.55 0.08 -631.13 -0.07
20 0.5247 -6735.31 -0.03 -726.89 0.03
21 1.0403 2573.88 -0.08 -1454.60 0.07
22 1.0430 2574.97 0.26 -1458.82 -0.07
23 1.2045 753.77 ( 0.62) -1703.88 ( 0.36)
24 1.2045 752.42 -0.03 -1704.30 -0.02
25 1.2098 643.11 0.05 -1712.29 -0.05
26 1.2098 642.36 0.01 -1712.26 0.03
27 1.2099 640.37 0.01 -1712.42 -0.01
28 1.2099 639.50 -0.15 -1712.40 0.06
29 1.2621 -527.64 0.09 -1790.00 -0.07
30 1.3657 -2856.90 -0.02 -1936.95 0.07
31 1.3658 -2860.44 0.01 -1937.11 0.14
32 1.5186 -4381.95 -0.07 -2136.13 -0.00
33 1.5322 -4342.49 0.08 -2153.27 -0.11
34 2.2309 2711.55 -0.09 -3214.73 0.01
35 2.2503 2268.88 0.02 -3245.05 -0.06
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.
15RA279 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 60.385 60.837 59.942 ecceobj 0.688 0.691 0.685 incobj 30.118 30.119 30.118 qmin 16.886 17.236 16.782 qmax 112.134 107.932 105.473 amean 59.791 60.871 58.304 amin 57.321 59.663 54.667 amax 64.881 62.941 61.528 emean 0.706 0.702 0.691 emin 0.683 0.685 0.631 emax 0.729 0.722 0.718 imean 27.322 28.982 28.148 imin 25.972 27.221 25.608 imax 30.174 30.155 33.593 excite_mean 0.842 0.853 0.837 fracstop 0.194 0.080 0.274 cjmean 2.275 2.273 2.286 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 225.1 324.1 169.6 kozaiamp 180.0 18.9 180.0