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: 19AK142 # Created Mon Apr 28 01:11:11 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000005 0.024033 -0.000004 -0.009295 0.025697 0.000000 # Chi-squared of fit: 4.43 DOF: 22 RMS: 0.10 # Min/Max residuals: -0.22 0.20 # Exact a, adot, b, bdot, g, gdot: 1.789873E-05 2.978468E-02 -5.381536E-06 -9.046221E-03 2.651824E-02 -5.122286E-03 # Covariance matrix: 3.7511E-13 1.7042E-11 1.2947E-14 2.7680E-13 3.8053E-12 1.0902E-10 1.7042E-11 3.8858E-08 2.3857E-11 9.3002E-10 7.1438E-09 6.5784E-08 1.2947E-14 2.3857E-11 3.6713E-13 -1.0887E-12 4.4266E-12 4.8658E-11 2.7680E-13 9.3002E-10 -1.0887E-12 3.5201E-11 1.6646E-10 6.1906E-10 3.8053E-12 7.1438E-09 4.4266E-12 1.6646E-10 1.3236E-09 1.4169E-08 1.0902E-10 6.5784E-08 4.8658E-11 6.1906E-10 1.4169E-08 5.4521E-07 # lat0 lon0 xBary yBary zBary JD0 -6.392238 165.096472 0.806112 -0.064038 -0.572401 2458495.042281 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 345.17176 +/- 1.426 Argument of Peri: 237.94510 +/- 3.929 Long of Asc Node: 324.26770 +/- 0.133 Inclination: 18.18310 +/- 0.110 Eccentricity: 0.41125949 +/- 0.0165 Semi-Major Axis: 61.14321567 +/- 1.0826 Time of Perihelion: 2465683.4649 +/- 665.0 Perihelion: 35.99748817 +/- 1.1948 Aphelion: 86.28894316 +/- 1.8318 Period (y) 478.1131 +/- 12.70 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.56336619 +/- 0.0497 Ecliptic Y 10.55742017 +/- 0.0132 Ecliptic Z -4.19863882 +/- 0.0058 Ecliptic XDOT -0.00017461 +/- 0.0001 Ecliptic YDOT -0.00313545 +/- 0.0000 Ecliptic ZDOT -0.00086949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.28795418 +/- 0.0476 Geocenter to KBO 37.70989025 +/- 0.0517 # Hcoef: 8.31
The following table shows the complete astrometric record for 19AK142. 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 (19AK142) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.54148 10 55 14.90 -00 01 38.6 24.1z 19AK142 T09 C~870S 2019 01 11.58440 10 55 14.78 -00 01 38.5 23.8z 19AK142 T09 C~870S 2019 01 11.61426 10 55 14.69 -00 01 38.5 23.6z 19AK142 T09 C~870S 2019 01 11.66816 10 55 14.55 -00 01 38.3 23.9z 19AK142 T09 C~870S 2019 03 15.34612 10 50 40.15 +00 16 32.5 24.3y 19AK142 T09 C~870S 2019 03 15.36307 10 50 40.06 +00 16 33.0 24.2y 19AK142 T09 C~870S 2019 03 15.47337 10 50 39.53 +00 16 35.6 23.7y 19AK142 T09 C~870S 2019 04 04.38775 10 49 09.76 +00 25 17.5 25.2g 19AK142 T09 C~8HQx 2019 04 04.39625 10 49 09.73 +00 25 17.5 24.5g 19AK142 T09 C~8HQx 2019 04 05.40376 10 49 05.69 +00 25 43.0 23.9r 19AK142 T09 C~870S 2019 04 05.43322 10 49 05.58 +00 25 43.7 24.1r 19AK142 T09 C~870S 2019 04 05.46680 10 49 05.43 +00 25 44.5 23.9r 19AK142 T09 C~870S 2019 04 05.47728 10 49 05.39 +00 25 44.7 23.8r 19AK142 T09 C~870S 2019 04 05.51163 10 49 05.24 +00 25 45.4 24.1r 19AK142 T09 C~870S
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 -0.00
2 0.0001 -1.70 -0.01 -0.60 0.01
3 0.0002 -2.95 -0.06 -1.12 -0.08
4 0.0003 -4.96 0.09 -1.74 0.07
5 0.1719 -4224.62 -0.04 -576.95 0.06
6 0.1720 -4226.06 -0.15 -577.00 0.08
7 0.1723 -4234.40 0.20 -577.66 -0.12
8 0.2268 -5678.93 -0.17 -613.42 0.04
9 0.2268 -5679.35 -0.01 -613.59 -0.13
10 0.2296 -5745.14 0.01 -613.34 0.12
11 0.2297 -5746.94 0.17 -613.33 0.15
12 0.2298 -5749.32 -0.01 -613.46 0.03
13 0.2298 -5749.96 0.05 -613.50 -0.01
14 0.2299 -5752.30 -0.05 -613.72 -0.22
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.
19AK142 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 60.689 63.869 57.863 ecceobj 0.405 0.435 0.375 incobj 18.182 17.880 18.496 qmin 35.298 35.286 34.787 qmax 87.761 94.453 82.511 amean 60.840 64.166 57.901 amin 60.126 63.388 57.049 amax 61.838 65.215 58.969 emean 0.402 0.436 0.378 emin 0.384 0.423 0.361 emax 0.420 0.450 0.400 imean 19.808 19.332 19.542 imin 19.169 18.824 18.458 imax 20.751 19.914 20.209 excite_mean 0.526 0.548 0.505 fracstop 1.000 1.000 1.000 cjmean 2.943 2.947 2.939 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 180.6 204.8 181.0 kozaiamp 180.0 179.9 180.0