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: 24EL7 # Created Fri Jan 24 02:11:59 2025 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 4.08d # First observation: 2024/03/02 # Last observation: 2024/03/06 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.029556 0.000000 0.000116 0.025014 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 5.22 DOF: 13 RMS: 0.13 # Min/Max residuals: -0.24 0.21 # Exact a, adot, b, bdot, g, gdot: 1.487206E-05 2.307085E-02 5.147982E-07 4.795318E-05 2.377343E-02 -2.734330E-03 # Covariance matrix: 4.9474E-11 7.6530E-08 6.5332E-13 8.1015E-10 1.4478E-08 2.8533E-07 7.6530E-08 1.1976E-04 1.0215E-09 1.2668E-06 2.2638E-05 4.4308E-04 6.5332E-13 1.0215E-09 5.0268E-13 -4.3073E-11 1.9311E-10 3.8070E-09 8.1015E-10 1.2668E-06 -4.3073E-11 2.2173E-08 2.3948E-07 4.6843E-06 1.4478E-08 2.2638E-05 1.9311E-10 2.3948E-07 4.2796E-06 8.4061E-05 2.8533E-07 4.4308E-04 3.8070E-09 4.6843E-06 8.4061E-05 3.0567E-03 # lat0 lon0 xBary yBary zBary JD0 -0.920945 -163.808528 0.559493 -0.013443 -0.825596 2460371.688641 # Heliocentric elements and errors Epoch: 2460370.5000 = 2024/03/01 Mean Anomaly: 290.92642 +/- 185.755 Argument of Peri: 1.16269 +/- 36.702 Long of Asc Node: 278.35567 +/- 19.175 Inclination: 0.91029 +/- 0.037 Eccentricity: 0.13341025 +/- 2.3386 Semi-Major Axis: 44.26303567 +/- 20.0619 Time of Perihelion: 2481008.5973 +/- 53697.8 Perihelion: 38.35789282 +/- 104.9612 Aphelion: 50.16817852 +/- 105.9794 Period (y) 294.4896 +/- 200.21 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.33122920 +/- 3.5147 Ecliptic Y -11.41811072 +/- 1.0203 Ecliptic Z -0.67609733 +/- 0.0588 Ecliptic XDOT 0.00103786 +/- 0.0059 Ecliptic YDOT -0.00245719 +/- 0.0026 Ecliptic ZDOT 0.00001064 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 42.88473932 +/- 3.3983 Geocenter to KBO 42.06376116 +/- 3.6603 # Hcoef: 7.24
The following table shows the complete astrometric record for 24EL7. 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 (24EL7) followed by the observatory code and reference code for the source of the astrometry.
2024 03 02.18784 12 58 14.55 -07 13 06.2 24EL7 W93 C~7xao 2024 03 02.26444 12 58 14.26 -07 13 04.5 24EL7 W93 C~7xao 2024 03 04.18566 12 58 07.40 -07 12 23.2 23.1R 24EL7 W93 C~7xao 2024 03 04.22410 12 58 07.28 -07 12 22.4 23.1R 24EL7 W93 C~7xao 2024 03 04.26260 12 58 07.12 -07 12 21.6 23.3R 24EL7 W93 C~7xao 2024 03 06.19801 12 58 00.00 -07 11 38.7 23.3R 24EL7 W93 C~7xao 2024 03 06.22238 12 57 59.91 -07 11 38.4 23.3R 24EL7 W93 C~7xao 2024 03 06.24494 12 57 59.82 -07 11 38.0 23.3R 24EL7 W93 C~7xao 2024 03 06.26594 12 57 59.75 -07 11 37.7 23.3R 24EL7 W93 C~7xao
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 0.10 0.00 -0.10
2 0.0002 -4.64 -0.14 -0.09 -0.10
3 0.0055 -114.75 -0.11 -1.29 0.11
4 0.0056 -116.71 0.21 -1.24 0.21
5 0.0057 -119.22 -0.02 -1.42 0.07
6 0.0110 -233.52 -0.15 -2.64 0.20
7 0.0110 -234.87 -0.02 -2.87 -0.01
8 0.0111 -236.26 -0.04 -3.02 -0.14
9 0.0112 -237.34 0.16 -3.15 -0.24
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.
24EL7 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0