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: 09JA19 # Created Wed Dec 25 02:08:58 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 8.92y # First observation: 2009/05/14 # Last observation: 2018/04/14 # Chi-squared of fit: 2.84 DOF: 28 RMS: 0.07 # Min/Max residuals: -0.13 0.17 # Exact a, adot, b, bdot, g, gdot: 1.533979E-05 2.218591E-02 -1.561915E-06 -2.001877E-03 2.332596E-02 -1.058758E-04 # Covariance matrix: 1.1872E-13 -4.3414E-14 -1.0303E-15 2.7679E-15 -4.6421E-14 -1.5546E-13 -4.3414E-14 2.0259E-13 2.6860E-15 -1.2598E-14 -9.2258E-14 9.8101E-13 -1.0303E-15 2.6860E-15 1.0535E-13 -1.7464E-14 2.6458E-15 1.5292E-14 2.7679E-15 -1.2598E-14 -1.7464E-14 1.6365E-14 1.1507E-16 -6.7892E-14 -4.6421E-14 -9.2258E-14 2.6458E-15 1.1507E-16 4.0542E-13 -3.7343E-13 -1.5546E-13 9.8101E-13 1.5292E-14 -6.7892E-14 -3.7343E-13 5.1753E-12 # lat0 lon0 xBary yBary zBary JD0 14.663699 -179.560933 -0.804407 0.154232 -0.589520 2454965.861765 # Heliocentric elements and errors Epoch: 2454966.5000 = 2009/05/15 Mean Anomaly: 84.29913 +/- 0.436 Argument of Peri: 24.40240 +/- 0.445 Long of Asc Node: 70.75140 +/- 0.001 Inclination: 15.41912 +/- 0.000 Eccentricity: 0.01228252 +/- 0.0001 Semi-Major Axis: 43.51191992 +/- 0.0055 Time of Perihelion: 2430417.6371 +/- 127.0 Perihelion: 42.97748383 +/- 0.0072 Aphelion: 44.04635600 +/- 0.0073 Period (y) 287.0256 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.07347622 +/- 0.0011 Ecliptic Y -1.13158783 +/- 0.0000 Ecliptic Z 10.85248047 +/- 0.0003 Ecliptic XDOT -0.00002253 +/- 0.0000 Ecliptic YDOT -0.00260031 +/- 0.0000 Ecliptic ZDOT -0.00023056 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.46531421 +/- 0.0011 Geocenter to KBO 42.87075006 +/- 0.0012 # Hcoef: 7.14
The following table shows the complete astrometric record for 09JA19. 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 (09JA19) followed by the observatory code and reference code for the source of the astrometry.
2009 05 14.360999 12 25 21.761 +13 15 22.62 23.4i 09JA19 568 C~0aRU 2009 05 14.405438 12 25 21.634 +13 15 22.56 23.5i 09JA19 568 C~0aRU 2009 05 14.444451 12 25 21.522 +13 15 22.54 23.3i 09JA19 568 C~0aRU 2009 05 15.269616 12 25 19.225 +13 15 21.63 24.4g 09JA19 568 C~0aRU 2009 05 15.399172 12 25 18.856 +13 15 21.48 23.0i 09JA19 568 C~0aRU 2009 05 15.437581 12 25 18.737 +13 15 21.50 23.4i 09JA19 568 C~0aRU 2009 05 22.274460 12 25 01.475 +13 14 56.67 24.7g 09JA19 568 C~0aRU 2009 05 22.331130 12 25 01.338 +13 14 56.38 24.3g 09JA19 568 C~0aRU 2009 05 22.387021 12 25 01.191 +13 14 56.07 24.0g 09JA19 568 C~0aRU 2009 05 24.296422 12 24 56.989 +13 14 43.62 24.3g 09JA19 568 C~0aRU 2009 05 24.353938 12 24 56.855 +13 14 43.23 24.3g 09JA19 568 C~0aRU 2009 05 25.279882 12 24 54.920 +13 14 36.27 09JA19 568 C~0aRU 2010 02 06.545894 12 36 10.17 +12 00 35.7 09JA19 T14 C~7udm 2010 02 06.652821 12 36 09.91 +12 00 39.1 22.7z 09JA19 T14 C~7udm 2013 04 18.330621 12 45 04.90 +10 39 00.0 23.0r 09JA19 T14 C~7udm 2013 04 18.364600 12 45 04.76 +10 39 00.7 23.1r 09JA19 T14 C~7udm 2018 04 14.222849 13 07 44.63 +07 20 43.1 22.9i 09JA19 W84 C~7udm
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 -0.04 0.00 0.06
2 0.0001 0.00 -0.01 0.00 0.04
3 0.0002 0.00 0.00 0.00 0.06
4 0.0025 0.00 0.02 0.00 -0.03
5 0.0028 0.00 0.02 0.00 -0.00
6 0.0029 0.00 -0.13 0.00 0.08
7 0.0217 0.00 0.17 0.00 -0.07
8 0.0218 0.00 0.12 0.00 -0.02
9 0.0220 0.00 -0.11 0.00 0.00
10 0.0272 0.00 0.07 0.00 0.02
11 0.0274 0.00 -0.02 0.00 0.05
12 0.0299 0.00 0.05 0.00 0.02
13 0.7343 0.00 -0.09 0.00 -0.11
14 0.7345 0.00 0.06 0.00 -0.05
15 3.9287 0.00 -0.11 0.00 -0.13
16 3.9288 0.00 0.00 0.00 -0.04
17 8.9168 0.00 0.05 0.00 0.09
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.
09JA19 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.435 43.435 43.435 ecceobj 0.016 0.016 0.016 incobj 15.432 15.432 15.432 qmin 42.175 42.161 42.168 qmax 45.259 45.296 45.271 amean 43.654 43.654 43.654 amin 43.317 43.316 43.317 amax 43.989 43.989 43.989 emean 0.018 0.018 0.018 emin 0.006 0.006 0.006 emax 0.030 0.030 0.030 imean 13.869 13.869 13.869 imin 13.454 13.454 13.453 imax 14.340 14.336 14.340 excite_mean 0.240 0.240 0.240 fracstop 1.000 1.000 1.000 cjmean 3.028 3.028 3.028 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 180.9 180.9 180.8 kozaiamp 180.0 180.0 180.0