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: 19EH10
# Created Sun Oct 19 01:11:58 2025
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 0.97y
# First observation: 2018/03/18
# Last observation: 2019/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000029 0.024456 -0.000000 -0.000445 0.024289 0.000000
# Chi-squared of fit: 2.71 DOF: 22 RMS: 0.08
# Min/Max residuals: -0.16 0.17
# Exact a, adot, b, bdot, g, gdot:
1.567187E-05 2.439985E-02 -3.942286E-07 -4.455299E-04 2.453320E-02 -5.469267E-04
# Covariance matrix:
3.7000E-13 1.0980E-12 2.0309E-15 -2.7399E-14 9.5016E-13 5.8766E-11
1.0980E-12 3.7500E-11 3.7324E-14 -6.5786E-13 1.6163E-11 1.3979E-09
2.0309E-15 3.7324E-14 2.6278E-13 -2.8960E-13 2.0243E-14 1.4835E-12
-2.7399E-14 -6.5786E-13 -2.8960E-13 5.4209E-13 -3.0453E-13 -2.5187E-11
9.5016E-13 1.6163E-11 2.0243E-14 -3.0453E-13 9.2062E-12 6.5052E-10
5.8766E-11 1.3979E-09 1.4835E-12 -2.5187E-11 6.5052E-10 5.3583E-08
# lat0 lon0 xBary yBary zBary JD0
1.356637 174.383174 -0.048385 0.023603 -0.992891 2458195.960511
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 336.24756 +/- 8.187
Argument of Peri: 154.78206 +/- 9.277
Long of Asc Node: 46.12612 +/- 0.046
Inclination: 1.68814 +/- 0.001
Eccentricity: 0.05540461 +/- 0.0043
Semi-Major Axis: 43.96071179 +/- 0.0236
Time of Perihelion: 2465214.7698 +/- 2421.2
Perihelion: 41.52508568 +/- 0.1910
Aphelion: 46.39633789 +/- 0.1913
Period (y) 291.4777 +/- 0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.54854562 +/- 0.0050
Ecliptic Y 4.03030524 +/- 0.0005
Ecliptic Z 0.96504547 +/- 0.0001
Ecliptic XDOT -0.00020059 +/- 0.0000
Ecliptic YDOT -0.00272023 +/- 0.0000
Ecliptic ZDOT -0.00005130 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.75471609 +/- 0.0050
Geocenter to KBO 40.76108627 +/- 0.0050
# Hcoef: 8.04
The following table shows the complete astrometric record for 19EH10. 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 (19EH10) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.45971 11 41 31.79 +03 28 36.3 23.9i 19EH10 T09 C~93Td 2018 03 18.50304 11 41 31.59 +03 28 37.6 24.0i 19EH10 T09 C~93Td 2018 03 18.50571 11 41 31.57 +03 28 37.6 24.0i 19EH10 T09 C~93Td 2018 03 18.57604 11 41 31.26 +03 28 39.6 24.3i 19EH10 T09 C~93Td 2018 04 24.36908 11 39 01.40 +03 44 09.6 23.4z 19EH10 T09 C~93Td 2018 04 24.39881 11 39 01.30 +03 44 10.1 23.6z 19EH10 T09 C~93Td 2019 02 05.45522 11 49 26.69 +02 35 18.4 23.9i 19EH10 T09 C~93Td 2019 02 05.45789 11 49 26.68 +02 35 18.2 23.9i 19EH10 T09 C~93Td 2019 02 05.47125 11 49 26.63 +02 35 18.5 24.1i 19EH10 T09 C~93Td 2019 02 05.51157 11 49 26.51 +02 35 19.4 24.0i 19EH10 T09 C~93Td 2019 03 08.34835 11 47 24.85 +02 48 48.9 24.4r 19EH10 T09 C~93Td 2019 03 08.35813 11 47 24.79 +02 48 49.2 24.3r 19EH10 T09 C~93Td 2019 03 08.36022 11 47 24.79 +02 48 49.4 24.3r 19EH10 T09 C~93Td 2019 03 08.40431 11 47 24.59 +02 48 50.5 24.2r 19EH10 T09 C~93Td
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 0.01 0.00 0.02
2 0.0001 -3.26 -0.02 0.01 0.06
3 0.0001 -3.54 -0.09 -0.11 -0.05
4 0.0003 -8.59 0.09 -0.12 -0.00
5 0.1011 -2437.02 -0.02 -35.30 0.03
6 0.1011 -2438.59 0.02 -35.44 -0.04
7 0.8871 7802.20 -0.06 -107.05 0.11
8 0.8871 7802.14 0.03 -107.29 -0.13
9 0.8871 7801.33 -0.06 -107.32 -0.16
10 0.8872 7799.32 0.09 -107.21 -0.08
11 0.9716 5802.68 0.11 -90.25 0.07
12 0.9717 5801.74 -0.11 -90.33 -0.01
13 0.9717 5801.66 -0.03 -90.14 0.17
14 0.9718 5798.47 0.03 -90.33 0.01
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.
19EH10 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.665 43.740 43.621 ecceobj 0.047 0.046 0.050 incobj 1.690 1.689 1.690 qmin 40.847 40.842 40.727 qmax 47.020 47.159 47.081 amean 43.819 43.886 43.780 amin 43.477 43.551 43.434 amax 44.184 44.241 44.137 emean 0.047 0.049 0.048 emin 0.030 0.032 0.031 emax 0.065 0.066 0.067 imean 1.362 1.358 1.355 imin 0.520 0.525 0.512 imax 2.002 2.010 1.968 excite_mean 0.054 0.055 0.054 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.095 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 169.2 162.2 174.6 kozaiamp 180.0 180.0 179.9