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: 15KV167 # Created Wed Apr 17 01:17:10 2024 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 0.90y # First observation: 2015/05/18 # Last observation: 2016/04/10 Preliminary a, adot, b, bdot, g, gdot: -0.000012 0.009849 -0.000001 0.003487 0.015447 0.000000 # Chi-squared of fit: 10.86 DOF: 10 RMS: 0.21 # Min/Max residuals: -0.30 0.54 # Exact a, adot, b, bdot, g, gdot: 9.699301E-06 9.766375E-03 4.541743E-06 3.488365E-03 1.555495E-02 -4.159907E-04 # Covariance matrix: 4.8546E-13 1.7143E-12 3.1300E-14 5.3602E-13 1.8419E-12 1.9179E-10 1.7143E-12 8.2871E-11 3.5948E-13 1.5784E-11 3.4516E-11 5.6427E-09 3.1300E-14 3.5948E-13 3.1802E-13 -2.8093E-13 3.2907E-13 3.3602E-11 5.3602E-13 1.5784E-11 -2.8093E-13 4.2888E-12 7.7270E-12 1.1420E-09 1.8419E-12 3.4516E-11 3.2907E-13 7.7270E-12 2.2268E-11 2.7636E-09 1.9179E-10 5.6427E-09 3.3602E-11 1.1420E-09 2.7636E-09 4.0830E-07 # lat0 lon0 xBary yBary zBary JD0 19.552335 -143.141863 -0.347927 0.317324 -0.893202 2457160.818398 # Heliocentric elements and errors Epoch: 2457160.5000 = 2015/05/18 Mean Anomaly: 188.87673 +/- 9.436 Argument of Peri: 221.05210 +/- 9.719 Long of Asc Node: 174.10730 +/- 0.027 Inclination: 27.11231 +/- 0.012 Eccentricity: 0.26508545 +/- 0.0046 Semi-Major Axis: 51.60774405 +/- 0.1275 Time of Perihelion: 2521529.5824 +/- 3541.4 Perihelion: 37.92728211 +/- 0.2555 Aphelion: 65.28820599 +/- 0.2873 Period (y) 370.7494 +/- 1.37 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -49.02494428 +/- 0.0147 Ecliptic Y -37.18605257 +/- 0.0110 Ecliptic Z 21.51551648 +/- 0.0065 Ecliptic XDOT 0.00124791 +/- 0.0001 Ecliptic YDOT -0.00121689 +/- 0.0001 Ecliptic ZDOT 0.00055416 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 65.18562048 +/- 0.0129 Geocenter to KBO 64.28821391 +/- 0.0195 # Hcoef: 7.19
The following table shows the complete astrometric record for 15KV167. 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 (15KV167) followed by the observatory code and reference code for the source of the astrometry.
2015 05 18.31762 14 43 21.450 +04 42 56.05 25.4r 15KV167 568 C~2Zru 2015 05 18.40098 14 43 21.191 +04 42 56.92 15KV167 568 C~2Zru 2015 05 18.48649 14 43 20.932 +04 42 57.78 15KV167 568 C~2Zru 2015 06 11.32152 14 42 15.740 +04 45 21.77 25.2r 15KV167 568 C~2Zru 2015 06 12.32130 14 42 13.381 +04 45 22.94 15KV167 568 C~2Zru 2016 03 10.38472 14 48 48.131 +04 20 32.95 25.2r 15KV167 304 C~2Zru 2016 04 10.49149 14 47 37.259 +04 32 59.15 25.3r 15KV167 568 C~2Zru 2016 04 10.62356 14 47 36.877 +04 33 02.17 25.2r 15KV167 568 C~2Zru
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 0.05 0.00 -0.21
2 0.0002 -3.95 -0.00 -0.41 -0.26
3 0.0005 -7.89 0.04 -0.83 -0.30
4 0.0657 -977.43 -0.09 -175.41 0.27
5 0.0685 -1011.22 -0.01 -185.55 0.54
6 0.8133 5058.78 0.08 292.10 0.23
7 0.8985 3814.90 0.01 658.71 -0.18
8 0.8989 3808.52 -0.08 659.74 -0.09
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.
15KV167 quality flag:2 Type: SCATNEAR 7:3EEEE SCATNEAR axisobj 51.250 52.609 51.129 ecceobj 0.274 0.317 0.274 incobj 27.255 27.225 27.269 qmin 36.072 35.711 36.464 qmax 67.690 71.145 67.064 amean 51.602 52.968 51.435 amin 51.081 52.369 50.924 amax 52.238 53.748 52.050 emean 0.276 0.302 0.272 emin 0.252 0.276 0.254 emax 0.298 0.326 0.289 imean 26.358 26.999 26.521 imin 25.667 26.246 26.186 imax 27.084 27.765 26.966 excite_mean 0.523 0.545 0.523 fracstop 1.000 1.000 1.000 cjmean 2.838 2.822 2.836 libcent 0 -180.0 177.2 -180.0 libamp 0 -180.0 157.3 -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 186.0 180.1 178.6 kozaiamp 180.0 180.0 179.9