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: 15VT207 # Created Sat Apr 27 01:17:55 2024 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 4.01y # First observation: 2014/11/27 # Last observation: 2018/12/02 Preliminary a, adot, b, bdot, g, gdot: -0.000058 0.032321 0.000135 -0.006008 0.029429 0.000000 # Chi-squared of fit: 2.56 DOF: 14 RMS: 0.09 # Min/Max residuals: -0.18 0.19 # Exact a, adot, b, bdot, g, gdot: 1.838035E-05 3.233141E-02 -3.516368E-06 -5.967223E-03 2.761681E-02 8.187060E-04 # Covariance matrix: 1.1989E-12 -1.3251E-12 -1.8624E-13 2.3032E-13 -7.7684E-13 -8.0951E-12 -1.3251E-12 1.8794E-12 2.7218E-13 -3.4858E-13 1.0455E-12 1.2247E-11 -1.8624E-13 2.7218E-13 4.5688E-13 -1.8661E-13 2.5413E-13 1.8819E-12 2.3032E-13 -3.4858E-13 -1.8661E-13 1.3480E-13 -2.1479E-13 -2.3620E-12 -7.7684E-13 1.0455E-12 2.5413E-13 -2.1479E-13 1.8064E-12 7.5896E-12 -8.0951E-12 1.2247E-11 1.8819E-12 -2.3620E-12 7.5896E-12 8.3003E-11 # lat0 lon0 xBary yBary zBary JD0 -36.716033 -1.384431 -0.900700 -0.241271 -0.323834 2456988.685058 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 5.64660 +/- 0.032 Argument of Peri: 246.01414 +/- 0.066 Long of Asc Node: 106.13198 +/- 0.001 Inclination: 37.38093 +/- 0.000 Eccentricity: 0.31219280 +/- 0.0002 Semi-Major Axis: 52.88315834 +/- 0.0140 Time of Perihelion: 2454777.2731 +/- 12.6 Perihelion: 36.37341705 +/- 0.0129 Aphelion: 69.39289963 +/- 0.0202 Period (y) 384.5779 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.44034855 +/- 0.0014 Ecliptic Y 0.19109577 +/- 0.0000 Ecliptic Z -21.64819565 +/- 0.0011 Ecliptic XDOT -0.00021529 +/- 0.0000 Ecliptic YDOT 0.00320625 +/- 0.0000 Ecliptic ZDOT -0.00052263 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.54333066 +/- 0.0013 Geocenter to KBO 36.20983042 +/- 0.0018 # Hcoef: 8.00
The following table shows the complete astrometric record for 15VT207. 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 (15VT207) followed by the observatory code and reference code for the source of the astrometry.
2014 11 27.18428 01 01 24.936 -33 47 41.24 24.1g 15VT207 W84 C~55XF 2015 11 07.17980 01 11 28.341 -33 18 43.42 23.5i 15VT207 W84 C~55XF 2015 11 08.10848 01 11 23.527 -33 18 34.99 23.4r 15VT207 W84 C~55XF 2015 11 08.10986 01 11 23.521 -33 18 35.16 24.2g 15VT207 W84 C~55XF 2015 11 30.19352 01 09 47.356 -33 10 01.45 22.6z 15VT207 W84 C~55XF 2015 12 01.15503 01 09 44.127 -33 09 26.26 23.3r 15VT207 W84 C~55XF 2017 11 24.20883 01 26 46.202 -31 54 38.55 24.7g 15VT207 W84 C~55XF 2018 09 10.38836 01 41 31.678 -30 48 59.43 24.4g 15VT207 W84 C~55XF 2018 12 02.06328 01 34 20.959 -31 08 56.76 23.9r 15VT207 W84 C~55XF 2018 12 02.06465 01 34 20.952 -31 08 56.51 24.7g 15VT207 W84 C~55XF
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 0.03 0.00 0.02
2 0.9445 7432.22 0.06 -2174.91 0.19
3 0.9471 7384.08 -0.03 -2137.42 0.01
4 0.9471 7383.93 -0.11 -2137.53 -0.16
5 1.0076 6592.22 0.05 -1090.63 -0.05
6 1.0102 6574.45 -0.02 -1039.93 0.04
7 2.9925 20031.46 0.03 -3836.83 -0.18
8 3.7870 31883.94 -0.01 -6754.40 -0.06
9 4.0134 26491.76 -0.05 -4664.19 -0.00
10 4.0134 26491.82 0.05 -4663.93 0.18
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.
15VT207 quality flag:2 Type: SCATNEAR SCATNEAR 7:3EEEE axisobj 53.541 53.584 53.498 ecceobj 0.321 0.321 0.320 incobj 37.383 37.383 37.383 qmin 35.251 35.482 33.955 qmax 71.620 71.560 73.058 amean 53.076 53.147 52.967 amin 52.357 52.607 52.323 amax 53.783 53.800 53.805 emean 0.306 0.308 0.336 emin 0.273 0.282 0.303 emax 0.334 0.330 0.359 imean 35.961 35.941 35.049 imin 35.302 35.418 34.408 imax 36.810 36.637 35.970 excite_mean 0.662 0.663 0.666 fracstop 1.000 1.000 1.000 cjmean 2.614 2.614 2.614 libcent 0 -180.0 -180.0 182.0 libamp 0 -180.0 -180.0 176.3 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 186.0 204.3 194.8 kozaiamp 180.0 179.9 180.0