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: 17EN53 # Created Wed Nov 27 02:10:50 2024 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 37.08d # First observation: 2017/02/25 # Last observation: 2017/04/03 Preliminary a, adot, b, bdot, g, gdot: -0.000005 0.056473 0.000011 -0.000708 0.036805 0.000000 # Chi-squared of fit: 13.43 DOF: 32 RMS: 0.15 # Min/Max residuals: -0.29 0.34 # Exact a, adot, b, bdot, g, gdot: 1.865521E-05 4.316080E-02 4.860119E-07 5.675559E-05 3.474755E-02 1.182152E-02 # Covariance matrix: 7.1799E-13 -7.0218E-11 -6.3436E-14 4.0595E-12 -5.3025E-12 2.2008E-09 -7.0218E-11 4.2012E-07 3.1826E-10 -2.4257E-08 6.2079E-08 -3.8301E-06 -6.3436E-14 3.1826E-10 5.2220E-13 -2.2218E-11 4.6897E-11 -2.9510E-09 4.0595E-12 -2.4257E-08 -2.2218E-11 1.4734E-09 -3.5826E-09 2.2202E-07 -5.3025E-12 6.2079E-08 4.6897E-11 -3.5826E-09 9.2224E-09 -5.4920E-07 2.2008E-09 -3.8301E-06 -2.9510E-09 2.2202E-07 -5.4920E-07 4.0887E-05 # lat0 lon0 xBary yBary zBary JD0 -8.069253 152.540035 -0.065467 -0.138324 -0.976845 2457809.803848 # Heliocentric elements and errors Epoch: 2457800.5000 = 2017/02/16 Mean Anomaly: 30.72841 +/- 5.651 Argument of Peri: 207.28754 +/- 15.893 Long of Asc Node: 242.63097 +/- 0.167 Inclination: 7.80234 +/- 0.001 Eccentricity: 0.35940945 +/- 0.1401 Semi-Major Axis: 39.79268532 +/- 3.8775 Time of Perihelion: 2449974.4822 +/- 873.6 Perihelion: 25.49081811 +/- 6.1041 Aphelion: 54.09455254 +/- 7.6729 Period (y) 251.0227 +/- 36.69 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -26.19283556 +/- 0.0699 Ecliptic Y 13.53150720 +/- 0.0363 Ecliptic Z -4.03970685 +/- 0.0112 Ecliptic XDOT -0.00238389 +/- 0.0004 Ecliptic YDOT -0.00259870 +/- 0.0003 Ecliptic ZDOT -0.00012639 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 29.75710929 +/- 0.0637 Geocenter to KBO 28.77901036 +/- 0.0795 # Hcoef: 10.17
The following table shows the complete astrometric record for 17EN53. 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 (17EN53) followed by the observatory code and reference code for the source of the astrometry.
2017 02 25.303047 10 06 27.69 +03 01 40.7 17EN53 T09 C~85J3 2017 03 04.26345 10 05 44.99 +03 05 58.3 24.9z 17EN53 T09 C~83F6 2017 03 04.28899 10 05 44.81 +03 05 59.0 24.6z 17EN53 T09 C~83F6 2017 03 04.31448 10 05 44.65 +03 06 00.0 24.5z 17EN53 T09 C~83F6 2017 03 04.34002 10 05 44.50 +03 06 01.0 24.5z 17EN53 T09 C~83F6 2017 03 04.45244 10 05 43.80 +03 06 05.0 24.5i 17EN53 T09 C~83F6 2017 03 04.47432 10 05 43.66 +03 06 06.2 24.8i 17EN53 T09 C~83F6 2017 03 04.49602 10 05 43.53 +03 06 06.8 24.7i 17EN53 T09 C~83F6 2017 03 22.29509 10 04 04.17 +03 17 17.5 25.5g 17EN53 T09 C~83F6 2017 03 22.30894 10 04 04.10 +03 17 18.0 25.5g 17EN53 T09 C~83F6 2017 03 22.38749 10 04 03.69 +03 17 20.9 24.2z 17EN53 T09 C~83F6 2017 03 22.43886 10 04 03.41 +03 17 22.9 24.3z 17EN53 T09 C~83F6 2017 03 25.25752 10 03 49.59 +03 19 06.7 25.3r 17EN53 T09 C~83F6 2017 03 25.27122 10 03 49.52 +03 19 07.4 24.8r 17EN53 T09 C~83F6 2017 03 25.28496 10 03 49.47 +03 19 07.4 25.2r 17EN53 T09 C~83F6 2017 03 29.275308 10 03 30.99 +03 21 32.0 17EN53 T09 C~85J3 2017 03 29.289242 10 03 30.91 +03 21 32.5 17EN53 T09 C~85J3 2017 04 03.291764 10 03 09.74 +03 24 28.0 17EN53 T09 C~85J3 2017 04 03.379015 10 03 09.38 +03 24 30.7 17EN53 T09 C~85J3
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 0.20 0.00 -0.09
2 0.0191 -689.35 0.23 14.97 0.34
3 0.0191 -692.12 -0.01 14.67 -0.03
4 0.0192 -694.72 -0.08 14.76 -0.01
5 0.0193 -697.17 -0.00 14.90 0.06
6 0.0196 -708.39 -0.05 14.94 -0.18
7 0.0196 -710.78 -0.27 15.32 0.14
8 0.0197 -712.81 -0.15 15.19 -0.04
9 0.0684 -2341.96 0.12 117.24 -0.01
10 0.0685 -2343.12 0.14 117.34 -0.02
11 0.0687 -2349.89 0.07 117.88 -0.06
12 0.0688 -2354.52 -0.20 118.28 -0.06
13 0.0765 -2584.82 -0.07 142.37 -0.09
14 0.0766 -2586.05 -0.18 142.65 0.08
15 0.0766 -2586.75 0.24 142.39 -0.29
16 0.0875 -2896.76 0.24 180.06 0.02
17 0.0876 -2898.06 0.01 180.10 -0.06
18 0.1013 -3256.66 -0.15 232.51 0.30
19 0.1015 -3262.66 -0.07 233.14 0.02
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.
17EN53 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