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: 17EP53 # Created Wed Mar 26 01:11:09 2025 # Orbit generated from Bernstein formalism # Fitting 46 observations of 46 # Arc: 4.38y # First observation: 2014/11/18 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: 0.000008 0.024964 0.000132 0.011371 0.025705 0.000000 # Chi-squared of fit: 22.30 DOF: 86 RMS: 0.12 # Min/Max residuals: -0.40 0.27 # Exact a, adot, b, bdot, g, gdot: 1.625115E-05 2.478139E-02 6.598813E-06 1.132359E-02 2.552820E-02 6.170515E-03 # Covariance matrix: 3.2573E-13 -3.5844E-14 4.1766E-14 -1.2110E-14 2.1311E-13 -3.0133E-13 -3.5844E-14 3.8390E-13 -7.0214E-14 1.6178E-13 3.9014E-13 4.4122E-12 4.1766E-14 -7.0214E-14 1.8462E-13 -1.2458E-13 -3.2847E-14 -1.2071E-12 -1.2110E-14 1.6178E-13 -1.2458E-13 1.3766E-13 1.5747E-13 2.3307E-12 2.1311E-13 3.9014E-13 -3.2847E-14 1.5747E-13 6.1529E-13 4.3227E-12 -3.0133E-13 4.4122E-12 -1.2071E-12 2.3307E-12 4.3227E-12 6.3409E-11 # lat0 lon0 xBary yBary zBary JD0 -9.504944 150.921316 0.985118 0.014918 0.088110 2456980.041948 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 34.40398 +/- 0.015 Argument of Peri: 279.60298 +/- 0.038 Long of Asc Node: 169.71556 +/- 0.000 Inclination: 25.85015 +/- 0.000 Eccentricity: 0.27265561 +/- 0.0003 Semi-Major Axis: 48.32567095 +/- 0.0083 Time of Perihelion: 2445253.9178 +/- 4.2 Perihelion: 35.14940557 +/- 0.0146 Aphelion: 61.50193634 +/- 0.0170 Period (y) 335.9503 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.21095089 +/- 0.0010 Ecliptic Y 19.59486445 +/- 0.0006 Ecliptic Z -6.46841560 +/- 0.0002 Ecliptic XDOT -0.00204165 +/- 0.0000 Ecliptic YDOT -0.00191305 +/- 0.0000 Ecliptic ZDOT 0.00108858 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.09944210 +/- 0.0009 Geocenter to KBO 39.17237370 +/- 0.0012 # Hcoef: 9.01
The following table shows the complete astrometric record for 17EP53. 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 (17EP53) followed by the observatory code and reference code for the source of the astrometry.
2014 11 18.541170 09 58 26.80 +02 14 40.1 17EP53 T09 C~86v5 2015 01 16.55599 09 56 48.98 +02 16 30.0 24.3z 17EP53 T09 C~8ife 2015 01 16.64412 09 56 48.62 +02 16 31.7 24.6z 17EP53 T09 C~8ife 2015 01 16.65856 09 56 48.56 +02 16 32.0 24.5z 17EP53 T09 C~8ife 2015 01 21.575327 09 56 28.29 +02 18 14.4 17EP53 T09 C~86v5 2016 02 09.312965 10 01 27.16 +02 33 13.0 17EP53 T09 C~86v5 2016 02 09.350821 10 01 26.96 +02 33 14.3 17EP53 T09 C~86v5 2016 03 04.451925 09 59 32.42 +02 46 40.4 17EP53 T09 C~86v5 2016 03 07.27865 09 59 19.61 +02 48 21.6 26.5g 17EP53 T09 C~8COv 2016 03 07.28866 09 59 19.55 +02 48 22.1 26.1g 17EP53 T09 C~8COv 2016 03 07.29878 09 59 19.53 +02 48 22.4 26.1g 17EP53 T09 C~8COv 2016 03 07.30953 09 59 19.46 +02 48 22.6 26.1g 17EP53 T09 C~8COv 2016 03 07.31343 09 59 19.45 +02 48 23.1 26.4g 17EP53 T09 C~8COv 2016 03 07.32114 09 59 19.40 +02 48 23.3 26.0g 17EP53 T09 C~8COv 2016 03 07.32499 09 59 19.39 +02 48 23.3 25.9g 17EP53 T09 C~8COv 2016 03 07.32886 09 59 19.37 +02 48 23.6 25.8g 17EP53 T09 C~8COv 2016 03 09.28942 09 59 10.66 +02 49 33.8 25.3r 17EP53 T09 C~8COv 2016 03 09.29953 09 59 10.60 +02 49 34.3 25.8r 17EP53 T09 C~8COv 2016 03 09.30973 09 59 10.56 +02 49 34.6 25.2r 17EP53 T09 C~8COv 2016 03 09.32844 09 59 10.48 +02 49 35.5 25.7r 17EP53 T09 C~8COv 2016 03 09.33236 09 59 10.45 +02 49 35.3 26.1r 17EP53 T09 C~8COv 2016 03 09.33622 09 59 10.43 +02 49 35.8 25.9r 17EP53 T09 C~8COv 2016 03 09.34016 09 59 10.43 +02 49 35.8 25.9r 17EP53 T09 C~8COv 2016 03 12.39109 09 58 57.11 +02 51 25.6 24.4z 17EP53 T09 C~8COv 2016 03 12.40577 09 58 57.08 +02 51 26.2 25.0z 17EP53 T09 C~8COv 2016 03 12.44690 09 58 56.90 +02 51 27.7 24.1z 17EP53 T09 C~8COv 2016 03 12.45077 09 58 56.87 +02 51 27.9 24.5z 17EP53 T09 C~8COv 2016 03 12.45461 09 58 56.86 +02 51 27.9 24.4z 17EP53 T09 C~8COv 2016 03 12.45847 09 58 56.85 +02 51 28.1 24.7z 17EP53 T09 C~8COv 2016 03 12.46618 09 58 56.82 +02 51 28.2 24.4z 17EP53 T09 C~8COv 2016 03 12.47390 09 58 56.78 +02 51 28.6 24.4z 17EP53 T09 C~8COv 2017 01 02.557561 10 10 11.80 +02 26 24.4 17EP53 T09 C~86v5 2017 01 23.420972 10 08 58.06 +02 32 35.5 17EP53 T09 C~86v5 2017 03 04.31448 10 05 53.80 +02 53 01.6 24.5z 17EP53 T09 C~83F6 2017 03 04.34002 10 05 53.68 +02 53 02.5 24.8z 17EP53 T09 C~83F6 2017 03 04.47432 10 05 53.05 +02 53 07.0 25.0i 17EP53 T09 C~83F6 2017 03 04.49602 10 05 52.96 +02 53 07.8 24.9i 17EP53 T09 C~83F6 2017 03 22.38749 10 04 36.60 +03 03 46.5 24.7z 17EP53 T09 C~83F6 2017 03 22.41317 10 04 36.48 +03 03 47.3 24.4z 17EP53 T09 C~83F6 2017 03 22.43886 10 04 36.37 +03 03 48.4 25.3z 17EP53 T09 C~83F6 2017 03 22.46449 10 04 36.29 +03 03 49.2 24.3z 17EP53 T09 C~83F6 2017 03 22.48627 10 04 36.19 +03 03 50.2 24.7z 17EP53 T09 C~83F6 2017 03 25.24382 10 04 25.79 +03 05 27.0 22.5r 17EP53 T09 C~83F6 2017 03 25.27122 10 04 25.69 +03 05 27.9 21.7r 17EP53 T09 C~83F6 2017 03 25.28496 10 04 25.63 +03 05 28.2 22.2r 17EP53 T09 C~83F6 2019 04 05.356825 10 16 12.50 +03 23 53.4 17EP53 T09 C~86v5
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 -0.19 0.00 0.09
2 0.1616 -1412.88 0.04 -406.86 0.04
3 0.1618 -1418.53 0.03 -407.14 0.02
4 0.1619 -1419.48 0.00 -407.17 0.03
5 0.1753 -1739.96 0.16 -416.77 0.00
6 1.2259 2146.59 0.25 1984.48 -0.02
7 1.2260 2143.33 -0.06 1984.66 0.03
8 1.2920 253.63 0.21 2142.56 -0.12
9 1.2998 38.47 0.09 2170.62 -0.08
10 1.2998 37.46 -0.16 2170.78 -0.02
11 1.2998 37.07 0.23 2170.96 0.05
12 1.2998 36.02 0.00 2170.78 -0.23
13 1.2999 35.70 -0.01 2171.20 0.15
14 1.2999 34.93 -0.19 2171.12 -0.00
15 1.2999 34.79 -0.04 2171.07 -0.09
16 1.2999 34.41 -0.13 2171.25 0.05
17 1.3053 -112.37 0.17 2191.64 -0.10
18 1.3053 -113.39 -0.08 2191.80 -0.05
19 1.3053 -114.05 0.02 2191.87 -0.08
20 1.3054 -115.49 0.00 2192.30 0.15
21 1.3054 -115.84 -0.05 2191.95 -0.23
22 1.3054 -116.29 -0.22 2192.32 0.09
23 1.3054 -116.29 0.08 2192.32 0.05
24 1.3138 -341.60 -0.40 2225.81 -0.21
25 1.3138 -342.23 0.06 2226.22 0.04
26 1.3139 -345.28 0.05 2226.69 0.05
27 1.3139 -345.77 -0.15 2226.72 0.04
28 1.3139 -345.91 -0.01 2226.66 -0.05
29 1.3139 -346.12 0.07 2226.80 0.04
30 1.3140 -346.58 0.18 2226.74 -0.11
31 1.3140 -347.28 0.05 2226.90 -0.03
32 2.1246 9665.06 -0.15 4350.13 -0.08
33 2.1817 8497.47 0.05 4310.66 0.01
34 2.2910 5478.13 -0.04 4493.67 0.19
35 2.2910 5476.13 -0.04 4493.88 0.18
36 2.2914 5465.70 0.03 4494.80 -0.07
37 2.2915 5464.16 0.18 4495.08 0.02
38 2.3404 4168.30 0.27 4693.99 0.14
39 2.3405 4166.34 0.04 4694.11 -0.06
40 2.3406 4164.41 -0.15 4694.57 0.07
41 2.3407 4163.01 0.18 4694.90 0.08
42 2.3407 4161.25 -0.11 4695.32 0.22
43 2.3483 3981.38 -0.13 4731.64 0.09
44 2.3483 3979.66 -0.07 4731.96 0.05
45 2.3484 3978.71 -0.12 4731.93 -0.16
46 4.3773 13535.55 0.03 9492.73 -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.
17EP53 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.141 48.166 48.116 ecceobj 0.272 0.273 0.272 incobj 25.926 25.926 25.926 qmin 34.104 34.176 33.757 qmax 62.523 62.478 63.021 amean 47.796 47.796 47.796 amin 47.099 47.085 47.128 amax 48.603 48.628 48.586 emean 0.266 0.262 0.274 emin 0.240 0.242 0.249 emax 0.289 0.287 0.297 imean 25.225 25.227 24.901 imin 24.777 24.658 24.512 imax 25.911 25.842 25.558 excite_mean 0.502 0.501 0.503 fracstop 1.000 1.000 1.000 cjmean 2.827 2.829 2.827 libcent 0 180.8 180.0 181.1 libamp 0 168.8 176.4 163.3 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 179.1 173.8 193.7 kozaiamp 180.0 180.0 179.9