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: 00YA2 # Created Tue Apr 1 01:08:10 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 21 observations of 21 # Arc: 24.04y # First observation: 2000/12/17 # Last observation: 2024/12/31 # Chi-squared of fit: 182.93 DOF: 36 RMS: 0.52 # Min/Max residuals: -1.31 1.42 # Exact a, adot, b, bdot, g, gdot: 1.454853E-05 2.160934E-02 4.310206E-06 -4.574935E-05 2.298179E-02 1.044448E-03 # Covariance matrix: 1.4496E-13 -1.9525E-14 4.0401E-16 1.2491E-17 -4.8966E-14 -2.4253E-14 -1.9525E-14 3.0266E-14 4.7854E-16 -7.6901E-17 -4.8481E-14 5.6409E-14 4.0401E-16 4.7854E-16 1.1823E-13 -5.8866E-15 -2.9795E-15 9.7776E-16 1.2491E-17 -7.6901E-17 -5.8866E-15 8.7965E-16 2.0803E-16 -1.4981E-16 -4.8966E-14 -4.8481E-14 -2.9795E-15 2.0803E-16 3.2996E-13 -9.9815E-14 -2.4253E-14 5.6409E-14 9.7776E-16 -1.4981E-16 -9.9815E-14 1.0846E-13 # lat0 lon0 xBary yBary zBary JD0 -1.898914 53.299633 -0.527336 -0.027485 -0.824203 2451895.790593 # Heliocentric elements and errors Epoch: 2451896.5000 = 2000/12/18 Mean Anomaly: 84.32061 +/- 0.069 Argument of Peri: 175.86809 +/- 0.080 Long of Asc Node: 146.98277 +/- 0.002 Inclination: 1.86550 +/- 0.000 Eccentricity: 0.05945279 +/- 0.0000 Semi-Major Axis: 44.45185397 +/- 0.0048 Time of Perihelion: 2426541.4488 +/- 21.2 Perihelion: 41.80906743 +/- 0.0046 Aphelion: 47.09464051 +/- 0.0052 Period (y) 296.3760 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.06452816 +/- 0.0006 Ecliptic Y 35.84970288 +/- 0.0009 Ecliptic Z -1.44165903 +/- 0.0000 Ecliptic XDOT -0.00199787 +/- 0.0000 Ecliptic YDOT 0.00164222 +/- 0.0000 Ecliptic ZDOT -0.00000939 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.34676754 +/- 0.0008 Geocenter to KBO 43.51273356 +/- 0.0011 # Hcoef: 7.00
The following table shows the complete astrometric record for 00YA2. 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 (00YA2) followed by the observatory code and reference code for the source of the astrometry.
2000 12 17.28985 03 25 37.44 +16 45 33.0 23.0R 00YA2 695 Cc4111 2000 12 17.33635 03 25 37.28 +16 45 32.4 22.6R 00YA2 695 Cc4111 2000 12 17.37674 03 25 37.08 +16 45 31.4 22.6R 00YA2 695 Cc4111 2000 12 18.15238 03 25 34.06 +16 45 23.0 00YA2 695 Cc4111 2000 12 18.24276 03 25 33.71 +16 45 21.9 00YA2 695 Cc4111 2001 02 14.87408 03 23 59.22 +16 41 49.4 00YA2 950 Cc6738 2001 02 16.90219 03 24 01.46 +16 42 03.3 00YA2 950 Cc6738 2001 02 17.86432 03 24 02.67 +16 42 10.0 00YA2 950 Cc6738 2001 08 21.09523 03 36 59.82 +17 27 58.2 23.3R 00YA2 493 Cd7671 2001 08 22.09473 03 37 00.39 +17 27 57.5 23.9R 00YA2 493 Cd7671 2002 11 11.23237 03 38 28.94 +17 30 28.4 00YA2 695 Cg5722 2002 11 11.28481 03 38 28.70 +17 30 27.5 00YA2 695 Cg5722 2002 11 12.35398 03 38 23.52 +17 30 09.3 23.1R 00YA2 695 Cg5722 2002 11 12.41139 03 38 23.27 +17 30 08.6 23.1R 00YA2 695 Cg5722 2003 11 21.27639 03 42 45.05 +17 44 41.6 22.5R 00YA2 695 Cj8675 2003 11 21.35416 03 42 44.59 +17 44 41.8 00YA2 695 Cj8675 2013 11 06.36702 04 34 22.49 +20 06 06.3 24.0R 00YA2 G37 C~0yiY 2013 11 06.45555 04 34 22.10 +20 06 05.7 00YA2 G37 C~0yiY 2024 12 31.272070 05 25 28.810 +21 28 34.80 23.6G 00YA2 G37 C~8cO6 2024 12 31.321280 05 25 28.583 +21 28 34.60 00YA2 G37 C~8cO6 2024 12 31.370820 05 25 28.357 +21 28 34.24 00YA2 G37 C~8cO6
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 0.30 0.00 -0.85
2 0.0001 0.00 0.67 0.00 -0.84
3 0.0002 0.00 0.06 0.00 -1.31
4 0.0024 0.00 -0.30 0.00 0.17
5 0.0026 0.00 -0.22 0.00 0.21
6 0.1631 0.00 -0.00 0.00 0.00
7 0.1687 0.00 -0.18 0.00 0.11
8 0.1713 0.00 -0.12 0.00 -0.24
9 0.6757 0.00 -0.50 0.00 0.21
10 0.6785 0.00 -0.32 0.00 0.25
11 1.8999 0.00 0.99 0.00 0.56
12 1.9001 0.00 1.17 0.00 0.51
13 1.9030 0.00 -0.46 0.00 -0.18
14 1.9031 0.00 -0.07 0.00 0.07
15 2.9267 0.00 0.11 0.00 -0.01
16 2.9269 0.00 -1.10 0.00 1.42
17 12.8873 0.00 -0.12 0.00 0.03
18 12.8875 0.00 -0.15 0.00 0.32
19 24.0383 0.00 -0.09 0.00 -0.06
20 24.0384 0.00 0.01 0.00 -0.11
21 24.0386 0.00 0.14 0.00 -0.31
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.
00YA2 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.454 44.454 44.454 ecceobj 0.061 0.061 0.061 incobj 1.865 1.865 1.865 qmin 40.711 40.735 40.681 qmax 47.764 47.750 47.791 amean 44.138 44.138 44.138 amin 43.797 43.789 43.788 amax 44.509 44.506 44.512 emean 0.059 0.059 0.059 emin 0.043 0.043 0.043 emax 0.074 0.074 0.074 imean 1.927 1.927 1.927 imin 1.189 1.189 1.189 imax 2.574 2.574 2.574 excite_mean 0.068 0.068 0.068 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 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 169.9 170.0 170.1 kozaiamp 180.0 179.9 180.0