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: 19AQ142 # Created Tue Jan 21 02:11:17 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 15 # Arc: 112.76d # First observation: 2018/11/15 # Last observation: 2019/03/08 # Chi-squared of fit: 3.78 DOF: 18 RMS: 0.10 # Min/Max residuals: -0.22 0.26 # Exact a, adot, b, bdot, g, gdot: 1.657350E-05 3.164138E-02 -3.611483E-06 -5.800672E-03 2.975862E-02 -2.393581E-03 # Covariance matrix: 2.4093E-13 -1.3486E-12 -4.4316E-14 2.8117E-13 -1.4576E-13 -6.6707E-12 -1.3486E-12 4.6952E-11 2.2051E-12 -9.9315E-12 1.1403E-11 2.3742E-10 -4.4316E-14 2.2051E-12 2.3145E-13 -4.8816E-13 5.7567E-13 1.1163E-11 2.8117E-13 -9.9315E-12 -4.8816E-13 2.1168E-12 -2.4119E-12 -5.0237E-11 -1.4576E-13 1.1403E-11 5.7567E-13 -2.4119E-12 3.1620E-12 5.7772E-11 -6.6707E-12 2.3742E-10 1.1163E-11 -5.0237E-11 5.7772E-11 1.2010E-09 # lat0 lon0 xBary yBary zBary JD0 -10.820973 147.401332 0.992026 0.013934 0.072337 2458438.068081 # Heliocentric elements and errors Epoch: 2458438.5000 = 2018/11/16 Mean Anomaly: 274.68202 +/- 0.122 Argument of Peri: 323.08826 +/- 0.111 Long of Asc Node: 281.03486 +/- 0.001 Inclination: 15.24284 +/- 0.000 Eccentricity: 0.10550287 +/- 0.0011 Semi-Major Axis: 33.45765467 +/- 0.0034 Time of Perihelion: 2475191.0050 +/- 25.3 Perihelion: 29.92777612 +/- 0.0364 Aphelion: 36.98753322 +/- 0.0364 Period (y) 193.5314 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.20992486 +/- 0.0017 Ecliptic Y 18.57037300 +/- 0.0011 Ecliptic Z -6.30894757 +/- 0.0004 Ecliptic XDOT -0.00129404 +/- 0.0000 Ecliptic YDOT -0.00262531 +/- 0.0000 Ecliptic ZDOT -0.00048303 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.54170002 +/- 0.0015 Geocenter to KBO 33.60377145 +/- 0.0020 # Hcoef: 8.45
The following table shows the complete astrometric record for 19AQ142. 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 (19AQ142) followed by the observatory code and reference code for the source of the astrometry.
2018 11 15.56728 09 43 36.74 +02 11 30.2 23.7z 19AQ142 T09 C~870S 2018 11 15.57003 09 43 36.75 +02 11 30.0 23.6z 19AQ142 T09 C~870S 2018 11 15.59379 09 43 36.76 +02 11 29.4 23.4z 19AQ142 T09 C~870S 2018 11 15.61124 09 43 36.78 +02 11 28.8 23.8z 19AQ142 T09 C~870S 2018 11 15.61997 09 43 36.78 +02 11 28.3 23.8z 19AQ142 T09 C~870S 2019 01 06.56568 09 42 00.10 +02 00 02.2 24.0g 19AQ142 T09 C~870S 2019 01 06.58908 09 41 59.99 +02 00 02.2 24.1g 19AQ142 T09 C~870S 2019 01 06.60853 09 41 59.90 +02 00 02.3 24.0g 19AQ142 T09 C~870S 2019 01 06.62123 09 41 59.84 +02 00 02.5 24.3g 19AQ142 T09 C~870S 2019 03 08.28552 09 36 26.06 +02 21 41.8 24.0r 19AQ142 T09 C~870S 2019 03 08.32553 09 36 25.86 +02 21 43.0 23.7r 19AQ142 T09 C~870S 2019 03 08.32762 09 36 25.83 +02 21 43.2 23.6r 19AQ142 T09 C~870S 2024 12 31.42757 10 22 10.850 -03 44 51.76 23.4G 19AQ142 G37 2024 12 31.48027 10 22 10.689 -03 44 52.10 19AQ142 G37 2024 12 31.53225 10 22 10.522 -03 44 52.69 19AQ142 G37
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 0.09
2 0.0000 0.00 0.19 0.00 -0.03
3 0.0001 0.00 0.00 0.00 0.09
4 0.0001 0.00 0.05 0.00 0.02
5 0.0001 0.00 -0.07 0.00 -0.22
6 0.1424 0.00 0.12 0.00 0.04
7 0.1424 0.00 0.06 0.00 -0.08
8 0.1425 0.00 0.03 0.00 -0.08
9 0.1425 0.00 -0.00 0.00 0.06
10 0.3086 0.00 0.06 0.00 -0.04
11 0.3087 0.00 0.26 0.00 -0.10
12 0.3087 0.00 -0.03 0.00 0.03
13 6.1269 0.00 ( -36.66) 0.00 ( 21.67)
14 6.1271 0.00 ( -36.63) 0.00 ( 21.75)
15 6.1272 0.00 ( -36.73) 0.00 ( 21.57)
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.
19AQ142 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 33.510 33.510 33.510 ecceobj 0.100 0.100 0.100 incobj 15.195 15.195 15.195 qmin 28.478 28.085 24.947 qmax 38.472 39.281 41.578 amean 33.360 33.366 33.218 amin 32.562 32.649 32.181 amax 33.733 34.041 34.215 emean 0.125 0.128 0.154 emin 0.094 0.094 0.094 emax 0.144 0.156 0.247 imean 17.064 16.915 15.665 imin 16.764 15.538 11.142 imax 17.566 17.243 17.504 excite_mean 0.319 0.318 0.316 fracstop 0.108 0.157 0.144 cjmean 2.905 2.905 2.905 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 225.8 171.8 262.6 kozaiamp 180.0 179.9 180.0