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: 15NX43 # Created Thu Aug 28 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 0.84y # First observation: 2014/09/18 # Last observation: 2015/07/23 Preliminary a, adot, b, bdot, g, gdot: -0.000060 0.039690 -0.000003 -0.000336 0.031515 0.000000 # Chi-squared of fit: 14.58 DOF: 46 RMS: 0.13 # Min/Max residuals: -0.45 0.23 # Exact a, adot, b, bdot, g, gdot: 1.757500E-05 3.816410E-02 1.640630E-07 -3.060671E-04 3.258044E-02 -8.689919E-03 # Covariance matrix: 7.1119E-13 5.5397E-11 7.4643E-14 -8.2809E-13 2.0448E-11 1.2545E-09 5.5397E-11 8.2695E-09 9.6343E-12 -1.2536E-10 2.6238E-09 1.7866E-07 7.4643E-14 9.6343E-12 2.2578E-13 -4.0090E-13 3.2796E-12 2.1231E-10 -8.2809E-13 -1.2536E-10 -4.0090E-13 2.3187E-12 -3.9423E-11 -2.7019E-09 2.0448E-11 2.6238E-09 3.2796E-12 -3.9423E-11 8.9589E-10 5.7873E-08 1.2545E-09 1.7866E-07 2.1231E-10 -2.7019E-09 5.7873E-08 3.8822E-06 # lat0 lon0 xBary yBary zBary JD0 10.723309 -24.830159 -0.341864 0.176418 -0.931074 2456918.771278 # Heliocentric elements and errors Epoch: 2456910.5000 = 2014/09/10 Mean Anomaly: 317.97245 +/- 2.080 Argument of Peri: 160.69261 +/- 5.171 Long of Asc Node: 242.28292 +/- 0.084 Inclination: 10.42341 +/- 0.001 Eccentricity: 0.25946581 +/- 0.0522 Semi-Major Axis: 37.31133000 +/- 1.0815 Time of Perihelion: 2466628.8181 +/- 229.9 Perihelion: 27.63031537 +/- 2.1051 Aphelion: 46.99234463 +/- 2.3760 Period (y) 227.9131 +/- 9.91 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.37086847 +/- 0.0251 Ecliptic Y -12.74976333 +/- 0.0117 Ecliptic Z 5.71101929 +/- 0.0052 Ecliptic XDOT 0.00069523 +/- 0.0002 Ecliptic YDOT 0.00320534 +/- 0.0001 Ecliptic ZDOT -0.00016103 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.62401594 +/- 0.0231 Geocenter to KBO 30.69326644 +/- 0.0282 # Hcoef: 9.40
The following table shows the complete astrometric record for 15NX43. 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 (15NX43) followed by the observatory code and reference code for the source of the astrometry.
2014 09 18.27050 22 12 21.87 +00 22 39.5 25.3g 15NX43 T09 C~90Hg 2014 09 18.28118 22 12 21.79 +00 22 39.0 25.5g 15NX43 T09 C~90Hg 2014 09 22.23487 22 12 01.81 +00 20 07.1 25.9r 15NX43 T09 C~90Hg 2014 09 22.24278 22 12 01.78 +00 20 07.0 25.4r 15NX43 T09 C~90Hg 2014 09 22.26419 22 12 01.67 +00 20 06.1 25.3r 15NX43 T09 C~90Hg 2014 09 22.27494 22 12 01.61 +00 20 05.8 24.6r 15NX43 T09 C~90Hg 2014 09 22.36421 22 12 01.17 +00 20 02.3 25.1i 15NX43 T09 C~90Hg 2015 07 15.44957 22 26 21.56 +01 38 28.1 24.5r 15NX43 T09 C~8eSf 2015 07 15.46937 22 26 21.49 +01 38 28.1 24.8r 15NX43 T09 C~8eSf 2015 07 15.49326 22 26 21.39 +01 38 27.6 24.6r 15NX43 T09 C~8eSf 2015 07 20.46939 22 26 01.11 +01 37 41.6 24.3i 15NX43 T09 C~8eSf 2015 07 20.54409 22 26 00.77 +01 37 40.6 24.4i 15NX43 T09 C~8eSf 2015 07 20.54678 22 26 00.76 +01 37 40.6 24.3i 15NX43 T09 C~8eSf 2015 07 20.56035 22 26 00.70 +01 37 40.4 24.0i 15NX43 T09 C~8eSf 2015 07 22.44091 22 25 52.52 +01 37 18.1 23.8z 15NX43 T09 C~8eSf 2015 07 22.45708 22 25 52.45 +01 37 18.1 23.6z 15NX43 T09 C~8eSf 2015 07 22.48140 22 25 52.34 +01 37 17.8 23.8z 15NX43 T09 C~8eSf 2015 07 22.49762 22 25 52.27 +01 37 17.4 23.6z 15NX43 T09 C~8eSf 2015 07 22.50032 22 25 52.27 +01 37 17.4 23.6z 15NX43 T09 C~8eSf 2015 07 22.51655 22 25 52.19 +01 37 17.4 23.7z 15NX43 T09 C~8eSf 2015 07 23.42835 22 25 48.13 +01 37 05.7 23.5y 15NX43 T09 C~8eSf 2015 07 23.45259 22 25 47.98 +01 37 05.2 23.3y 15NX43 T09 C~8eSf 2015 07 23.49892 22 25 47.80 +01 37 04.5 23.9y 15NX43 T09 C~8eSf 2015 07 23.52092 22 25 47.68 +01 37 04.2 23.5y 15NX43 T09 C~8eSf 2015 07 23.52362 22 25 47.70 +01 37 04.3 23.7y 15NX43 T09 C~8eSf 2015 07 23.54555 22 25 47.59 +01 37 03.8 23.2y 15NX43 T09 C~8eSf
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 0.20 0.00 -0.06
2 0.0000 -1.30 -0.17 -0.03 -0.02
3 0.0109 -335.62 -0.15 -33.49 -0.09
4 0.0109 -336.08 0.06 -33.42 0.05
5 0.0109 -337.94 0.01 -33.67 -0.01
6 0.0110 -338.89 -0.04 -33.62 0.13
7 0.0112 -346.31 0.09 -34.50 0.01
8 0.8218 13404.93 -0.09 -299.16 0.10
9 0.8219 13403.95 0.08 -298.78 0.19
10 0.8220 13402.37 -0.11 -298.71 -0.09
11 0.8356 13100.88 0.22 -232.00 -0.04
12 0.8358 13095.74 -0.02 -231.10 -0.13
13 0.8358 13095.60 0.02 -231.04 -0.11
14 0.8358 13094.68 -0.00 -230.91 -0.15
15 0.8410 12971.74 -0.11 -207.50 -0.09
16 0.8410 12970.76 0.01 -207.12 0.09
17 0.8411 12969.10 0.01 -206.81 0.09
18 0.8411 12967.98 -0.01 -206.80 -0.11
19 0.8411 12967.98 0.18 -206.80 -0.15
20 0.8412 12966.85 0.16 -206.37 0.08
21 0.8437 12905.61 0.16 -195.34 0.18
22 0.8438 12903.32 -0.45 -195.00 0.23
23 0.8439 12900.54 -0.02 -194.68 -0.03
24 0.8439 12898.75 -0.28 -194.31 0.06
25 0.8440 12899.06 0.22 -194.32 0.01
26 0.8440 12897.34 0.03 -194.20 -0.13
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.
15NX43 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 37.548 40.695 36.401 ecceobj 0.263 0.390 0.172 incobj 10.439 10.440 10.437 qmin 26.865 24.443 28.883 qmax 48.015 57.207 47.702 amean 37.029 40.254 37.269 amin 35.865 38.870 35.242 amax 37.621 41.034 38.886 emean 0.255 0.372 0.189 emin 0.208 0.327 0.138 emax 0.277 0.395 0.234 imean 11.510 12.847 11.604 imin 10.556 11.336 10.057 imax 13.366 15.535 12.652 excite_mean 0.325 0.434 0.278 fracstop 0.029 0.035 0.035 cjmean 2.918 2.844 2.951 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 198.1 212.8 247.7 kozaiamp 38.3 38.8 113.4