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: 19EQ9
# Created Tue Apr 1 01:11:12 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 5.10y
# First observation: 2014/02/28
# Last observation: 2019/04/06
# Chi-squared of fit: 6.11 DOF: 34 RMS: 0.10
# Min/Max residuals: -0.28 0.16
# Exact a, adot, b, bdot, g, gdot:
1.421355E-05 1.924019E-02 -4.496074E-07 -4.963597E-04 2.146350E-02 2.137032E-05
# Covariance matrix:
7.3372E-13 -3.4406E-13 -1.6843E-15 5.1894E-15 -2.0575E-13 -2.0476E-12
-3.4406E-13 9.0956E-13 7.3691E-15 -2.2307E-14 1.2124E-12 8.8517E-12
-1.6843E-15 7.3691E-15 6.7623E-13 -1.4390E-13 1.0222E-14 7.4516E-14
5.1894E-15 -2.2307E-14 -1.4390E-13 3.4814E-14 -3.0386E-14 -2.2574E-13
-2.0575E-13 1.2124E-12 1.0222E-14 -3.0386E-14 2.1195E-12 1.2129E-11
-2.0476E-12 8.8517E-12 7.4516E-14 -2.2574E-13 1.2129E-11 8.9554E-11
# lat0 lon0 xBary yBary zBary JD0
2.441453 174.360267 0.252368 0.040831 -0.955052 2456716.865902
# Heliocentric elements and errors
Epoch: 2456716.5000 = 2014/02/28
Mean Anomaly: 184.07339 +/- 0.958
Argument of Peri: 297.61824 +/- 0.956
Long of Asc Node: 52.55722 +/- 0.009
Inclination: 2.80498 +/- 0.000
Eccentricity: 0.02878993 +/- 0.0001
Semi-Major Axis: 46.22050088 +/- 0.0083
Time of Perihelion: 2512805.7228 +/- 305.8
Perihelion: 44.88981610 +/- 0.0093
Aphelion: 47.55118567 +/- 0.0097
Period (y) 314.2391 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -47.25100867 +/- 0.0031
Ecliptic Y 4.92100803 +/- 0.0003
Ecliptic Z 1.98466504 +/- 0.0001
Ecliptic XDOT -0.00025234 +/- 0.0000
Ecliptic YDOT -0.00244480 +/- 0.0000
Ecliptic ZDOT -0.00006301 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.54800901 +/- 0.0031
Geocenter to KBO 46.59074933 +/- 0.0032
# Hcoef: 7.64
The following table shows the complete astrometric record for 19EQ9. 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 (19EQ9) followed by the observatory code and reference code for the source of the astrometry.
2014 02 28.365124 11 43 10.30 +04 28 53.7 19EQ9 T09 C~8Mhh 2014 02 28.377913 11 43 10.25 +04 28 54.0 19EQ9 T09 C~8Mhh 2018 03 18.452640 11 58 03.26 +02 44 30.9 19EQ9 T09 C~8Mhh 2018 03 18.46982 11 58 03.20 +02 44 31.2 24.2i 19EQ9 T09 C~8Mhh 2018 03 18.49758 11 58 03.07 +02 44 32.2 24.0i 19EQ9 T09 C~8Mhh 2018 03 18.570687 11 58 02.79 +02 44 33.9 19EQ9 T09 C~8Mhh 2018 04 24.365505 11 55 44.73 +02 58 44.2 19EQ9 T09 C~8Mhh 2018 04 24.43720 11 55 44.49 +02 58 45.4 23.7z 19EQ9 T09 C~8Mhh 2018 04 24.506753 11 55 44.28 +02 58 46.8 19EQ9 T09 C~8Mhh 2019 02 05.53109 12 04 28.82 +01 59 57.9 24.2i 19EQ9 T09 C~8Mhh 2019 02 05.58174 12 04 28.69 +01 59 58.9 24.4i 19EQ9 T09 C~8Mhh 2019 02 05.66253 12 04 28.48 +02 00 00.6 24.4i 19EQ9 T09 C~8Mhh 2019 03 03.52297 12 03 03.50 +02 09 48.3 23.7z 19EQ9 T09 C~8Mhh 2019 03 03.56339 12 03 03.34 +02 09 49.6 24.3z 19EQ9 T09 C~8Mhh 2019 03 03.60358 12 03 03.19 +02 09 50.6 24.3z 19EQ9 T09 C~8Mhh 2019 03 03.61704 12 03 03.13 +02 09 51.1 24.5z 19EQ9 T09 C~8Mhh 2019 04 04.436418 12 00 57.06 +02 23 23.7 19EQ9 T09 C~8Mhh 2019 04 04.478301 12 00 56.90 +02 23 24.7 19EQ9 T09 C~8Mhh 2019 04 05.541243 12 00 52.77 +02 23 50.4 19EQ9 T09 C~8Mhh 2019 04 06.346560 12 00 49.67 +02 24 09.7 19EQ9 T09 C~8Mhh
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 -0.00 0.00 0.02
2 0.0000 0.00 0.00 0.00 -0.01
3 4.0495 0.00 -0.10 0.00 -0.02
4 4.0496 0.00 0.06 0.00 -0.16
5 4.0496 0.00 -0.19 0.00 0.12
6 4.0498 0.00 0.10 0.00 -0.08
7 4.1506 0.00 0.03 0.00 0.08
8 4.1508 0.00 -0.09 0.00 -0.03
9 4.1510 0.00 0.12 0.00 0.10
10 4.9368 0.00 -0.09 0.00 -0.08
11 4.9369 0.00 0.03 0.00 -0.05
12 4.9372 0.00 0.16 0.00 0.10
13 5.0080 0.00 -0.02 0.00 -0.28
14 5.0081 0.00 -0.08 0.00 -0.00
15 5.0082 0.00 -0.02 0.00 -0.02
16 5.0082 0.00 -0.14 0.00 0.14
17 5.0953 0.00 -0.00 0.00 -0.02
18 5.0955 0.00 0.09 0.00 -0.03
19 5.0984 0.00 0.07 0.00 0.09
20 5.1006 0.00 0.01 0.00 0.16
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.
19EQ9 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.910 45.910 45.910 ecceobj 0.036 0.036 0.036 incobj 2.807 2.807 2.807 qmin 43.823 43.823 43.823 qmax 48.577 48.578 48.576 amean 46.100 46.100 46.100 amin 45.740 45.740 45.741 amax 46.475 46.475 46.474 emean 0.034 0.034 0.034 emin 0.021 0.021 0.021 emax 0.046 0.046 0.046 imean 1.951 1.951 1.951 imin 1.587 1.587 1.587 imax 2.311 2.311 2.311 excite_mean 0.048 0.048 0.048 fracstop 1.000 1.000 1.000 cjmean 3.125 3.125 3.125 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 185.4 185.5 185.6 kozaiamp 180.0 180.0 180.0