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: 11HP83 # Created Sat Apr 20 01:13:44 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 25 observations of 25 # Arc: 7.27y # First observation: 2011/04/29 # Last observation: 2018/08/04 # Chi-squared of fit: 31.86 DOF: 44 RMS: 0.20 # Min/Max residuals: -0.55 0.57 # Exact a, adot, b, bdot, g, gdot: 1.605451E-05 3.109963E-02 -5.109510E-06 -1.136708E-02 2.802066E-02 2.783760E-03 # Covariance matrix: 3.7100E-13 -2.7604E-13 -4.9738E-14 9.1521E-14 9.0170E-14 -1.1822E-12 -2.7604E-13 5.0155E-13 9.5343E-14 -1.8811E-13 1.2780E-14 2.4274E-12 -4.9738E-14 9.5343E-14 2.3807E-13 -7.2180E-14 -6.6843E-15 4.6931E-13 9.1521E-14 -1.8811E-13 -7.2180E-14 8.0195E-14 -5.1890E-15 -9.2598E-13 9.0170E-14 1.2780E-14 -6.6843E-15 -5.1890E-15 2.6841E-13 6.3753E-14 -1.1822E-12 2.4274E-12 4.6931E-13 -9.2598E-13 6.3753E-14 1.1949E-11 # lat0 lon0 xBary yBary zBary JD0 -21.208391 -123.516560 0.317780 -0.346872 -0.893868 2455680.598196 # Heliocentric elements and errors Epoch: 2455680.5000 = 2011/04/29 Mean Anomaly: 8.91406 +/- 0.010 Argument of Peri: 209.78248 +/- 0.021 Long of Asc Node: 12.37273 +/- 0.000 Inclination: 28.68297 +/- 0.000 Eccentricity: 0.30732058 +/- 0.0001 Semi-Major Axis: 52.23548216 +/- 0.0086 Time of Perihelion: 2452266.0550 +/- 4.1 Perihelion: 36.18244345 +/- 0.0086 Aphelion: 68.28852088 +/- 0.0129 Period (y) 377.5345 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -19.16126974 +/- 0.0003 Ecliptic Y -28.36294371 +/- 0.0005 Ecliptic Z -12.91068492 +/- 0.0002 Ecliptic XDOT 0.00261338 +/- 0.0000 Ecliptic YDOT -0.00154838 +/- 0.0000 Ecliptic ZDOT -0.00113380 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.58268903 +/- 0.0004 Geocenter to KBO 35.68792535 +/- 0.0007 # Hcoef: 4.88
The following table shows the complete astrometric record for 11HP83. 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 (11HP83) followed by the observatory code and reference code for the source of the astrometry.
2011 04 29.09743 15 11 30.029 -39 52 22.00 20.9R 11HP83 809 C~0Vpa 2011 04 29.24020 15 11 29.066 -39 52 21.14 20.9R 11HP83 809 C~0Vpa 2011 04 29.32448 15 11 28.488 -39 52 20.85 20.8R 11HP83 809 C~0Vpa 2011 05 11.14006 15 10 07.05 -39 50 37.7 11HP83 809 C~0Vpa 2011 05 11.19622 15 10 06.67 -39 50 36.7 11HP83 809 C~0Vpa 2011 06 26.98374 15 05 23.56 -39 31 25.5 11HP83 807 C~0evM 2011 06 27.08692 15 05 23.08 -39 31 22.2 11HP83 807 C~0evM 2012 03 29.24507 15 22 27.78 -40 54 23.4 11HP83 809 C~0hfZ 2012 03 29.32990 15 22 27.37 -40 54 25.1 11HP83 809 C~0hfZ 2012 06 24.10247 15 13 25.09 -40 40 42.0 11HP83 809 C~0hfZ 2012 06 24.18290 15 13 24.69 -40 40 39.5 11HP83 809 C~0hfZ 2017 05 05.256725 16 02 15.60 -45 53 16.3 20.9g 11HP83 W84 C~3sqN 2017 05 05.257787 16 02 15.60 -45 53 16.3 20.8r 11HP83 W84 C~3sqN 2017 05 05.258459 16 02 15.59 -45 53 16.4 20.4i 11HP83 W84 C~3sqN 2017 05 05.259138 16 02 15.59 -45 53 16.4 19.9z 11HP83 W84 C~3sqN 2017 05 05.259823 16 02 15.60 -45 53 16.5 19.8y 11HP83 W84 C~3sqN 2017 05 05.260504 16 02 15.57 -45 53 16.3 19.7y 11HP83 W84 C~3sqN 2017 05 05.261200 16 02 15.57 -45 53 16.4 20.2z 11HP83 W84 C~3sqN 2017 05 05.261898 16 02 15.57 -45 53 16.3 20.3i 11HP83 W84 C~3sqN 2017 05 05.262582 16 02 15.56 -45 53 16.3 20.6r 11HP83 W84 C~3sqN 2017 05 05.263649 16 02 15.55 -45 53 16.3 20.8g 11HP83 W84 C~3sqN 2018 05 20.301590 16 09 49.55 -46 43 47.9 11HP83 W84 C~3sqN 2018 05 20.302652 16 09 49.54 -46 43 47.8 11HP83 W84 C~3sqN 2018 08 04.111874 16 02 41.33 -46 12 30.7 11HP83 W84 C~3sqN 2018 08 04.112952 16 02 41.33 -46 12 30.5 11HP83 W84 C~3sqN
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 0.28 0.00 -0.35
2 0.0004 0.00 0.55 0.00 -0.07
3 0.0006 0.00 0.57 0.00 -0.18
4 0.0330 0.00 -0.55 0.00 -0.03
5 0.0331 0.00 -0.30 0.00 0.26
6 0.1612 0.00 -0.04 0.00 0.12
7 0.1615 0.00 -0.33 0.00 0.12
8 0.9176 0.00 -0.21 0.00 0.01
9 0.9178 0.00 -0.35 0.00 0.10
10 1.1554 0.00 0.25 0.00 0.08
11 1.1556 0.00 0.20 0.00 0.00
12 6.0182 0.00 -0.08 0.00 0.00
13 6.0182 0.00 0.04 0.00 0.01
14 6.0182 0.00 -0.04 0.00 -0.09
15 6.0182 0.00 0.03 0.00 -0.08
16 6.0182 0.00 0.26 0.00 -0.18
17 6.0182 0.00 -0.12 0.00 0.02
18 6.0182 0.00 -0.05 0.00 -0.07
19 6.0182 0.00 0.03 0.00 0.03
20 6.0182 0.00 -0.05 0.00 0.03
21 6.0183 0.00 -0.08 0.00 0.04
22 7.0587 0.00 -0.06 0.00 0.02
23 7.0587 0.00 -0.09 0.00 0.12
24 7.2663 0.00 0.02 0.00 -0.05
25 7.2663 0.00 0.05 0.00 0.11
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.
11HP83 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.983 51.983 51.983 ecceobj 0.304 0.304 0.304 incobj 28.711 28.711 28.711 qmin 34.648 34.866 34.910 qmax 71.092 70.811 70.616 amean 52.399 52.421 52.304 amin 51.812 51.853 51.713 amax 53.120 53.157 53.021 emean 0.316 0.313 0.312 emin 0.294 0.294 0.290 emax 0.339 0.333 0.332 imean 28.456 28.590 28.558 imin 27.891 28.022 28.003 imax 29.192 29.252 29.241 excite_mean 0.572 0.572 0.571 fracstop 1.000 1.000 1.000 cjmean 2.774 2.774 2.775 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 188.4 186.3 185.1 kozaiamp 180.0 179.9 180.0