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: 17EF53
# Created Wed Dec 25 02:10:55 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 15.79y
# First observation: 2003/02/26
# Last observation: 2018/12/13
# Chi-squared of fit: 13.30 DOF: 54 RMS: 0.12
# Min/Max residuals: -0.31 0.28
# Exact a, adot, b, bdot, g, gdot:
1.544855E-05 2.484307E-02 -9.637001E-06 -1.500943E-02 2.503763E-02 -7.905991E-03
# Covariance matrix:
4.8568E-13 -5.4075E-14 -5.9694E-15 1.2439E-14 -2.2106E-14 -4.7498E-14
-5.4075E-14 5.0044E-14 1.2931E-14 -2.8650E-14 2.7176E-14 1.0992E-13
-5.9694E-15 1.2931E-14 4.7936E-13 -4.1371E-14 1.0969E-14 2.9927E-14
1.2439E-14 -2.8650E-14 -4.1371E-14 1.9840E-14 -1.6925E-14 -6.6313E-14
-2.2106E-14 2.7176E-14 1.0969E-14 -1.6925E-14 1.1262E-13 6.2836E-14
-4.7498E-14 1.0992E-13 2.9927E-14 -6.6313E-14 6.2836E-14 2.5442E-13
# lat0 lon0 xBary yBary zBary JD0
0.147534 128.961057 -0.472406 0.002233 -0.866354 2452696.927306
# Heliocentric elements and errors
Epoch: 2452696.5000 = 2003/02/26
Mean Anomaly: 348.82254 +/- 0.002
Argument of Peri: 221.99033 +/- 0.003
Long of Asc Node: 309.86267 +/- 0.000
Inclination: 30.97349 +/- 0.000
Eccentricity: 0.54422954 +/- 0.0001
Semi-Major Axis: 81.34265053 +/- 0.0102
Time of Perihelion: 2461016.3732 +/- 49.0
Perihelion: 37.07357704 +/- 0.0062
Aphelion: 125.61172401 +/- 0.0163
Period (y) 733.6445 +/- 0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -26.02811111 +/- 0.0003
Ecliptic Y 31.43685353 +/- 0.0004
Ecliptic Z 0.10246240 +/- 0.0000
Ecliptic XDOT -0.00157803 +/- 0.0000
Ecliptic YDOT -0.00238164 +/- 0.0000
Ecliptic ZDOT -0.00164330 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.81377765 +/- 0.0004
Geocenter to KBO 39.94012080 +/- 0.0005
# Hcoef: 7.39
The following table shows the complete astrometric record for 17EF53. 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 (17EF53) followed by the observatory code and reference code for the source of the astrometry.
2003 02 26.426563 08 45 44.03 +18 09 34.0 17EF53 T14 C~83F5 2003 02 26.441829 08 45 43.94 +18 09 34.1 17EF53 T14 C~83F5 2003 02 26.453074 08 45 43.91 +18 09 34.2 17EF53 T14 C~83F5 2015 03 14.088599 09 43 34.222 +02 05 44.45 23.0r 17EF53 W84 C~8HKi 2016 12 29.312373 09 59 37.730 -01 04 18.98 23.2r 17EF53 W84 C~8HKi 2016 12 29.313304 09 59 37.733 -01 04 19.06 23.2g 17EF53 W84 C~8HKi 2017 01 26.53794 09 57 42.40 -01 04 56.4 23.1z 17EF53 T09 C~81Bz 2017 01 26.55352 09 57 42.31 -01 04 56.4 22.8z 17EF53 T09 C~81Bz 2017 01 26.56693 09 57 42.26 -01 04 56.3 22.8z 17EF53 T09 C~81Bz 2017 01 26.58033 09 57 42.19 -01 04 55.9 22.8z 17EF53 T09 C~81Bz 2017 01 26.59916 09 57 42.09 -01 04 55.9 22.4z 17EF53 T09 C~81Bz 2017 01 26.60726 09 57 42.06 -01 04 55.8 22.5z 17EF53 T09 C~81Bz 2017 01 26.60996 09 57 42.03 -01 04 55.8 22.6z 17EF53 T09 C~81Bz 2017 02 02.37546 09 57 08.19 -01 03 51.5 23.1r 17EF53 T09 C~81Bz 2017 02 02.39083 09 57 08.11 -01 03 51.4 23.2r 17EF53 T09 C~81Bz 2017 02 02.41063 09 57 08.01 -01 03 51.2 23.5r 17EF53 T09 C~81Bz 2017 02 02.42167 09 57 07.96 -01 03 51.0 23.6r 17EF53 T09 C~81Bz 2017 03 06.43229 09 54 21.60 -00 54 09.9 22.9i 17EF53 T09 C~81Bz 2017 03 06.44111 09 54 21.57 -00 54 09.7 23.1i 17EF53 T09 C~81Bz 2017 03 06.44718 09 54 21.51 -00 54 09.6 23.1i 17EF53 T09 C~81Bz 2017 03 06.45254 09 54 21.51 -00 54 09.2 23.1i 17EF53 T09 C~81Bz 2017 03 06.47147 09 54 21.40 -00 54 09.2 22.8i 17EF53 T09 C~81Bz 2017 03 22.24596 09 53 09.13 -00 47 49.7 23.8g 17EF53 T09 C~81Bz 2017 03 22.25436 09 53 09.10 -00 47 49.3 23.8g 17EF53 T09 C~81Bz 2017 03 22.26750 09 53 09.04 -00 47 48.8 23.6g 17EF53 T09 C~81Bz 2018 05 05.060310 09 56 27.87 -02 00 55.8 17EF53 W84 C~83F5 2018 05 05.062140 09 56 27.87 -02 00 55.6 17EF53 W84 C~83F5 2018 05 07.035971 09 56 26.97 -02 00 25.3 17EF53 W84 C~83F5 2018 05 07.037694 09 56 26.99 -02 00 25.3 17EF53 W84 C~83F5 2018 12 13.249637 10 10 30.94 -03 56 17.6 17EF53 W84 C~83F5
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 0.06 0.00 0.02
2 0.0000 0.00 -0.22 0.00 -0.02
3 0.0001 0.00 0.12 0.00 -0.01
4 12.0429 0.00 -0.03 0.00 0.02
5 13.8395 0.00 0.06 0.00 -0.17
6 13.8395 0.00 0.15 0.00 -0.24
7 13.9168 0.00 0.07 0.00 0.02
8 13.9168 0.00 -0.12 0.00 -0.10
9 13.9169 0.00 0.13 0.00 -0.10
10 13.9169 0.00 0.08 0.00 0.20
11 13.9170 0.00 -0.02 0.00 0.05
12 13.9170 0.00 0.14 0.00 0.09
13 13.9170 0.00 -0.11 0.00 0.07
14 13.9355 0.00 -0.10 0.00 0.08
15 13.9356 0.00 -0.11 0.00 0.00
16 13.9356 0.00 -0.06 0.00 -0.02
17 13.9356 0.00 0.05 0.00 0.05
18 14.0233 0.00 -0.08 0.00 0.05
19 14.0233 0.00 0.13 0.00 0.04
20 14.0233 0.00 -0.31 0.00 0.00
21 14.0233 0.00 0.09 0.00 0.28
22 14.0234 0.00 -0.13 0.00 -0.16
23 14.0666 0.00 0.03 0.00 -0.16
24 14.0666 0.00 0.11 0.00 0.03
25 14.0666 0.00 0.05 0.00 0.21
26 15.1859 0.00 0.05 0.00 -0.06
27 15.1859 0.00 0.06 0.00 0.11
28 15.1913 0.00 -0.18 0.00 -0.06
29 15.1913 0.00 0.13 0.00 -0.09
30 15.7942 0.00 -0.16 0.00 -0.06
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.
17EF53 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 80.032 80.031 80.033 ecceobj 0.537 0.537 0.537 incobj 31.056 31.056 31.056 qmin 36.380 36.381 36.380 qmax 125.908 125.896 126.092 amean 80.028 80.028 80.028 amin 78.847 78.806 78.867 amax 81.789 81.775 81.779 emean 0.529 0.529 0.529 emin 0.516 0.516 0.516 emax 0.544 0.544 0.545 imean 33.028 33.041 33.013 imin 32.317 32.317 32.317 imax 33.443 33.459 33.425 excite_mean 0.760 0.760 0.760 fracstop 1.000 1.000 1.000 cjmean 2.696 2.696 2.696 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 269.4 269.1 269.7 kozaiamp 47.3 47.1 47.5