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: 19EZ9 # Created Fri May 15 01:12:16 2026 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 0 observations of 32 # Arc: ******h # First observation: 2016/01/15 # Last observation: ****/00/** # Chi-squared of fit: NaN DOF: -6 RMS: NaN # Min/Max residuals: 0.00 0.00 # Exact a, adot, b, bdot, g, gdot: -1.092002E-02 4.012606E-02 2.849180E-04 -1.127069E-03 3.331356E-02 -4.545602E-03 # Covariance matrix: 2.2554E-13 1.9407E-14 7.6286E-16 -9.8475E-16 2.9715E-13 3.0040E-14 1.9407E-14 6.9364E-14 9.9773E-16 -2.0365E-15 9.4299E-14 1.5157E-13 7.6286E-16 9.9773E-16 5.8573E-14 -7.7758E-15 2.0188E-15 2.2468E-15 -9.8475E-16 -2.0365E-15 -7.7758E-15 4.2629E-15 -3.1726E-15 -4.7078E-15 2.9715E-13 9.4299E-14 2.0188E-15 -3.1726E-15 5.6359E-13 1.6448E-13 3.0040E-14 1.5157E-13 2.2468E-15 -4.7078E-15 1.6448E-13 3.5959E-13 # lat0 lon0 xBary yBary zBary JD0 -12.049151 138.482359 0.404352 -0.186961 -0.876817 2457402.899639 # Heliocentric elements and errors Epoch: 2457402.5000 = 2016/01/15 Mean Anomaly: 326.71061 +/- 0.009 Argument of Peri: 310.60558 +/- 0.013 Long of Asc Node: 236.22897 +/- 0.000 Inclination: 11.82787 +/- 0.000 Eccentricity: 0.20619549 +/- 0.0001 Semi-Major Axis: 36.59674787 +/- 0.0039 Time of Perihelion: 2464880.1573 +/- 12.0 Perihelion: 29.05066337 +/- 0.0038 Aphelion: 44.14283237 +/- 0.0052 Period (y) 221.3971 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.17177467 +/- 0.0005 Ecliptic Y 20.60110567 +/- 0.0004 Ecliptic Z -6.25790769 +/- 0.0001 Ecliptic XDOT -0.00189857 +/- 0.0000 Ecliptic YDOT -0.00273111 +/- 0.0000 Ecliptic ZDOT -0.00001258 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.90565351 +/- 0.0005 Geocenter to KBO 30.01970131 +/- 0.0007 # Hcoef: 9.19
The following table shows the complete astrometric record for 19EZ9. 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 (19EZ9) followed by the observatory code and reference code for the source of the astrometry.
2016 01 15.39885 09 08 50.88 +03 48 12.2 23.9z 19EZ9 T09 C~8nhj 2016 01 15.41109 09 08 50.80 +03 48 12.5 24.0z 19EZ9 T09 C~8nhj 2016 01 15.42726 09 08 50.70 +03 48 12.7 24.0z 19EZ9 T09 C~8nhj 2016 01 15.44092 09 08 50.62 +03 48 13.2 23.3z 19EZ9 T09 C~8nhj 2016 02 06.46747 09 06 35.99 +03 56 15.7 23.7i 19EZ9 T09 C~8nhj 2016 02 06.47289 09 06 35.96 +03 56 15.9 24.0i 19EZ9 T09 C~8nhj 2016 02 06.48099 09 06 35.91 +03 56 16.2 24.4i 19EZ9 T09 C~8nhj 2016 02 08.42016 09 06 23.78 +03 57 10.4 24.4r 19EZ9 T09 C~8nhj 2016 02 08.43327 09 06 23.72 +03 57 10.9 24.2r 19EZ9 T09 C~8nhj 2016 02 08.46846 09 06 23.47 +03 57 11.8 23.7r 19EZ9 T09 C~8nhj 2016 02 08.52599 09 06 23.12 +03 57 13.4 24.1r 19EZ9 T09 C~8nhj 2016 02 08.52811 09 06 23.09 +03 57 13.6 24.1r 19EZ9 T09 C~8nhj 2016 02 08.53022 09 06 23.09 +03 57 13.6 24.2r 19EZ9 T09 C~8nhj 2016 03 07.34814 09 03 42.68 +04 12 14.3 24.3g 19EZ9 T09 C~8nhj 2016 03 07.37085 09 03 42.57 +04 12 15.5 24.9g 19EZ9 T09 C~8nhj 2016 03 07.40007 09 03 42.42 +04 12 16.3 24.5g 19EZ9 T09 C~8nhj 2016 03 07.40219 09 03 42.42 +04 12 16.5 24.8g 19EZ9 T09 C~8nhj 2016 03 07.41935 09 03 42.32 +04 12 16.8 24.5g 19EZ9 T09 C~8nhj 2016 03 12.30177 09 03 18.90 +04 15 06.2 23.8z 19EZ9 T09 C~8nhj 2016 03 12.33220 09 03 18.75 +04 15 07.4 23.4z 19EZ9 T09 C~8nhj 2016 03 12.34609 09 03 18.69 +04 15 07.7 24.2z 19EZ9 T09 C~8nhj 2016 03 12.35996 09 03 18.64 +04 15 08.4 23.6z 19EZ9 T09 C~8nhj 2016 03 12.37386 09 03 18.55 +04 15 08.9 23.8z 19EZ9 T09 C~8nhj 2019 03 08.30232 09 30 12.54 +01 54 30.4 24.0r 19EZ9 T09 C~8nhj 2019 03 08.32343 09 30 12.43 +01 54 31.1 23.8r 19EZ9 T09 C~8nhj 2019 03 08.34464 09 30 12.32 +01 54 31.9 24.0r 19EZ9 T09 C~8nhj 2019 03 15.27391 09 29 36.39 +01 58 55.0 23.1y 19EZ9 T09 C~8nhj 2019 03 15.29808 09 29 36.27 +01 58 55.7 23.7y 19EZ9 T09 C~8nhj 2019 03 15.31422 09 29 36.16 +01 58 56.2 23.8y 19EZ9 T09 C~8nhj 2026 03 13.28247 10 34 25.601 -03 42 23.11 23.6G 19EZ9 G37 2026 03 13.32554 10 34 25.345 -03 42 21.21 19EZ9 G37 2026 03 13.37111 10 34 25.065 -03 42 19.19 19EZ9 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 (2141.04) 0.00 (-728.92)
2 0.0000 0.00 (2140.93) 0.00 (-728.81)
3 0.0001 0.00 (2140.86) 0.00 (-728.87)
4 0.0001 0.00 (2140.87) 0.00 (-728.58)
5 0.0604 0.00 (2145.67) 0.00 (-729.25)
6 0.0604 0.00 (2145.73) 0.00 (-729.19)
7 0.0605 0.00 (2145.76) 0.00 (-729.12)
8 0.0658 0.00 (2145.45) 0.00 (-728.96)
9 0.0658 0.00 (2145.80) 0.00 (-728.84)
10 0.0659 0.00 (2145.40) 0.00 (-728.93)
11 0.0661 0.00 (2145.63) 0.00 (-728.95)
12 0.0661 0.00 (2145.38) 0.00 (-728.81)
13 0.0661 0.00 (2145.58) 0.00 (-728.87)
14 0.1422 0.00 (2135.57) 0.00 (-723.31)
15 0.1423 0.00 (2135.65) 0.00 (-722.89)
16 0.1424 0.00 (2135.62) 0.00 (-723.10)
17 0.1424 0.00 (2135.78) 0.00 (-722.97)
18 0.1424 0.00 (2135.58) 0.00 (-723.26)
19 0.1558 0.00 (2132.37) 0.00 (-721.76)
20 0.1559 0.00 (2132.25) 0.00 (-721.60)
21 0.1559 0.00 (2132.32) 0.00 (-721.78)
22 0.1560 0.00 (2132.54) 0.00 (-721.56)
23 0.1560 0.00 (2132.16) 0.00 (-721.53)
24 3.1428 0.00 (2199.60) 0.00 (-764.96)
25 3.1428 0.00 (2199.69) 0.00 (-765.05)
26 3.1429 0.00 (2199.79) 0.00 (-765.05)
27 3.1619 0.00 (2195.30) 0.00 (-763.10)
28 3.1619 0.00 (2195.31) 0.00 (-763.31)
29 3.1620 0.00 (2194.87) 0.00 (-763.42)
30 10.1571 0.00 (2351.99) 0.00 (-814.06)
31 10.1572 0.00 (2352.04) 0.00 (-813.99)
32 10.1574 0.00 (2351.94) 0.00 (-813.90)
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.
19EZ9 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.441 36.441 36.441 ecceobj 0.200 0.200 0.200 incobj 11.806 11.806 11.806 qmin 28.089 28.100 28.088 qmax 45.225 45.351 45.255 amean 36.475 36.476 36.476 amin 36.075 36.080 36.067 amax 36.907 36.937 36.905 emean 0.194 0.194 0.194 emin 0.146 0.146 0.145 emax 0.228 0.229 0.228 imean 14.045 14.060 14.041 imin 11.924 11.901 11.907 imax 16.292 16.239 16.298 excite_mean 0.311 0.312 0.311 fracstop 1.000 1.000 1.000 cjmean 2.920 2.919 2.920 libcent 0 180.9 180.6 180.5 libamp 0 84.1 81.8 84.3 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 271.9 271.9 271.8 kozaiamp 43.3 42.5 43.3