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: 15GX56 # Created Sun Nov 24 02:10:17 2024 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.11y # First observation: 2015/02/17 # Last observation: 2017/03/29 Preliminary a, adot, b, bdot, g, gdot: -0.000114 0.023521 0.000000 -0.000845 0.023797 0.000000 # Chi-squared of fit: 6.64 DOF: 64 RMS: 0.08 # Min/Max residuals: -0.18 0.16 # Exact a, adot, b, bdot, g, gdot: 1.514301E-05 2.342404E-02 -4.663064E-07 -8.429450E-04 2.387224E-02 1.982706E-03 # Covariance matrix: 1.9066E-13 5.6112E-15 7.8068E-16 -4.3327E-15 1.5871E-13 3.2057E-12 5.6112E-15 2.9347E-13 2.0363E-15 -1.1390E-14 1.8509E-13 8.3942E-12 7.8068E-16 2.0363E-15 8.7605E-14 -7.8215E-14 2.0523E-15 1.1183E-13 -4.3327E-15 -1.1390E-14 -7.8215E-14 1.3361E-13 -1.1444E-14 -6.2622E-13 1.5871E-13 1.8509E-13 2.0523E-15 -1.1444E-14 2.7846E-13 8.4472E-12 3.2057E-12 8.3942E-12 1.1183E-13 -6.2622E-13 8.4472E-12 4.6124E-10 # lat0 lon0 xBary yBary zBary JD0 -0.007438 -155.200721 0.822314 0.000077 -0.542766 2457071.002878 # Heliocentric elements and errors Epoch: 2457070.5000 = 2015/02/17 Mean Anomaly: 51.06625 +/- 0.240 Argument of Peri: 121.38039 +/- 0.334 Long of Asc Node: 23.48183 +/- 0.001 Inclination: 2.05339 +/- 0.001 Eccentricity: 0.08170817 +/- 0.0008 Semi-Major Axis: 44.53540551 +/- 0.0068 Time of Perihelion: 2441671.6612 +/- 72.2 Perihelion: 40.89649922 +/- 0.0372 Aphelion: 48.17431180 +/- 0.0374 Period (y) 297.2120 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.86709642 +/- 0.0008 Ecliptic Y -17.05138051 +/- 0.0004 Ecliptic Z -0.00546332 +/- 0.0000 Ecliptic XDOT 0.00091674 +/- 0.0000 Ecliptic YDOT -0.00253965 +/- 0.0000 Ecliptic ZDOT -0.00009661 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.44291214 +/- 0.0008 Geocenter to KBO 41.88966474 +/- 0.0009 # Hcoef: 7.89
The following table shows the complete astrometric record for 15GX56. 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 (15GX56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.50210 13 31 52.897 -09 36 40.64 24.0r 15GX56 568 C~2nvU 2015 02 17.54344 13 31 52.800 -09 36 40.23 24.3r 15GX56 568 C~2nvU 2015 02 20.47426 13 31 46.302 -09 36 03.75 24.1r 15GX56 568 C~2nvU 2015 03 18.47063 13 30 22.936 -09 28 11.35 24.4r 15GX56 568 C~2nvU 2015 03 18.47537 13 30 22.927 -09 28 11.31 24.0r 15GX56 568 C~2nvU 2015 03 18.52182 13 30 22.731 -09 28 10.23 24.4r 15GX56 568 C~2nvU 2015 03 20.52388 13 30 14.760 -09 27 24.61 23.9r 15GX56 568 C~2nvU 2015 04 11.41445 13 28 39.827 -09 18 20.24 24.2r 15GX56 568 C~2nvU 2015 04 12.36711 13 28 35.507 -09 17 55.43 24.1r 15GX56 568 C~2nvU 2015 04 12.40803 13 28 35.317 -09 17 54.33 24.3r 15GX56 568 C~2nvU 2015 04 12.45503 13 28 35.105 -09 17 53.14 23.8r 15GX56 568 C~2nvU 2015 04 14.46499 13 28 26.004 -09 17 00.88 23.8r 15GX56 568 C~2nvU 2015 04 18.42564 13 28 08.074 -09 15 17.49 24.0r 15GX56 568 C~2nvU 2015 04 18.47335 13 28 07.865 -09 15 16.39 24.0r 15GX56 568 C~2nvU 2015 05 16.27210 13 26 10.776 -09 04 01.33 24.0r 15GX56 568 C~2nvU 2015 05 25.37637 13 25 39.117 -09 00 59.14 24.0r 15GX56 568 C~2nvU 2015 05 25.43418 13 25 38.916 -09 00 58.02 24.0r 15GX56 568 C~2nvU 2015 06 21.32593 13 24 37.293 -08 55 06.74 24.2r 15GX56 568 C~2nvU 2015 06 22.28249 13 24 36.120 -08 55 00.18 24.3r 15GX56 568 C~2nvU 2015 07 12.27649 13 24 29.172 -08 54 28.49 24.2r 15GX56 568 C~2nvU 2015 07 15.26670 13 24 31.086 -08 54 40.99 24.3r 15GX56 568 C~2nvU 2015 07 19.26636 13 24 34.859 -08 55 05.30 24.2r 15GX56 568 C~2nvU 2016 03 11.58783 13 35 48.334 -10 02 43.84 24.2w 15GX56 568 C~2nvU 2016 03 11.63454 13 35 48.169 -10 02 43.05 24.6w 15GX56 568 C~2nvU 2016 03 12.48427 13 35 45.127 -10 02 26.02 24.4w 15GX56 568 C~2nvU 2016 04 03.46148 13 34 15.350 -09 53 59.65 24.3w 15GX56 568 C~2nvU 2016 04 09.44264 13 33 48.585 -09 51 27.82 24.2w 15GX56 568 C~2nvU 2016 05 02.32341 13 32 06.368 -09 41 46.14 24.2w 15GX56 568 C~2nvU 2016 05 06.33319 13 31 49.417 -09 40 09.51 24.4w 15GX56 568 C~2nvU 2016 05 28.31243 13 30 28.738 -09 32 29.27 24.5w 15GX56 568 C~2nvU 2016 05 29.31935 13 30 25.663 -09 32 11.73 24.5w 15GX56 568 C~2nvU 2016 06 04.38178 13 30 08.563 -09 30 34.56 24.3w 15GX56 568 C~2nvU 2016 06 27.29699 13 29 28.537 -09 26 49.78 24.3w 15GX56 568 C~2nvU 2016 07 07.29960 13 29 24.488 -09 26 30.32 24.6w 15GX56 568 C~2nvU 2017 03 29.46402 13 39 41.524 -10 28 18.29 15GX56 568 C~2nvU
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 0.08 0.00 -0.02
2 0.0001 -1.49 0.01 -0.14 -0.12
3 0.0081 -104.27 0.09 -1.40 0.03
4 0.0793 -1424.83 0.00 -14.24 -0.04
5 0.0793 -1424.97 0.16 -14.25 -0.05
6 0.0795 -1428.06 0.02 -14.31 -0.07
7 0.0849 -1554.52 -0.02 -15.20 0.04
8 0.1449 -3061.40 0.06 -25.82 0.06
9 0.1475 -3130.01 -0.13 -26.32 0.00
10 0.1476 -3133.03 -0.17 -26.33 0.03
11 0.1477 -3136.38 -0.09 -26.38 0.03
12 0.1532 -3280.92 0.01 -27.44 -0.05
13 0.1641 -3565.86 -0.12 -29.18 0.12
14 0.1642 -3569.14 0.07 -29.30 0.05
15 0.2403 -5430.70 0.11 -42.43 0.05
16 0.2652 -5934.19 0.11 -46.79 -0.02
17 0.2654 -5937.37 -0.06 -46.85 -0.03
18 0.3390 -6916.54 0.06 -59.02 -0.08
19 0.3416 -6935.14 0.05 -59.38 -0.03
20 0.3964 -7042.63 0.05 -68.16 -0.07
21 0.4046 -7011.62 -0.09 -69.24 0.13
22 0.4155 -6950.61 -0.16 -71.08 0.01
23 1.0625 3810.62 -0.18 -185.74 0.10
24 1.0626 3808.06 -0.05 -185.89 -0.01
25 1.0650 3760.00 0.04 -186.36 -0.08
26 1.1251 2340.03 0.00 -197.62 0.00
27 1.1415 1916.33 -0.06 -200.52 0.09
28 1.2042 297.23 0.03 -211.34 0.05
29 1.2151 28.61 -0.02 -213.21 0.01
30 1.2753 -1250.27 0.03 -222.62 -0.01
31 1.2781 -1299.02 -0.04 -223.01 0.02
32 1.2947 -1570.01 -0.05 -225.55 -0.03
33 1.3574 -2203.42 0.15 -234.23 0.10
34 1.3848 -2266.30 0.02 -238.17 -0.16
35 2.1108 7577.58 0.06 -369.82 -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.
15GX56 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.102 44.125 44.081 ecceobj 0.075 0.078 0.073 incobj 2.062 2.062 2.063 qmin 39.906 39.850 40.006 qmax 49.133 49.271 48.995 amean 44.387 44.410 44.365 amin 44.024 44.059 44.013 amax 44.766 44.789 44.751 emean 0.082 0.084 0.079 emin 0.066 0.068 0.064 emax 0.098 0.100 0.095 imean 2.174 2.176 2.173 imin 1.397 1.393 1.398 imax 2.812 2.822 2.806 excite_mean 0.090 0.093 0.088 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 167.9 168.3 168.1 kozaiamp 180.0 180.0 180.0