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: 01KO77 # Created Sun Dec 22 02:08:16 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 27 observations of 27 # Arc: 15.02y # First observation: 2001/05/23 # Last observation: 2016/05/29 # Chi-squared of fit: 87.96 DOF: 48 RMS: 0.32 # Min/Max residuals: -0.73 1.15 # Exact a, adot, b, bdot, g, gdot: 1.664375E-05 2.762414E-02 5.443234E-06 1.037694E-02 2.712665E-02 -1.536340E-03 # Covariance matrix: 2.8701E-13 -8.1768E-14 4.7333E-14 -2.6495E-14 1.9665E-13 -1.5016E-13 -8.1768E-14 3.4737E-14 -2.2446E-14 1.2410E-14 -5.8260E-14 7.0100E-14 4.7333E-14 -2.2446E-14 1.3743E-13 -1.9428E-14 3.4518E-14 -4.7811E-14 -2.6495E-14 1.2410E-14 -1.9428E-14 6.4782E-15 -2.0914E-14 2.6420E-14 1.9665E-13 -5.8260E-14 3.4518E-14 -2.0914E-14 5.0403E-13 -1.2093E-13 -1.5016E-13 7.0100E-14 -4.7811E-14 2.6420E-14 -1.2093E-13 1.4921E-13 # lat0 lon0 xBary yBary zBary JD0 -2.456370 -120.820334 -0.051091 -0.043741 -1.016700 2452052.665493 # Heliocentric elements and errors Epoch: 2452052.5000 = 2001/05/23 Mean Anomaly: 342.42635 +/- 0.013 Argument of Peri: 16.67986 +/- 0.017 Long of Asc Node: 245.57182 +/- 0.000 Inclination: 20.78769 +/- 0.000 Eccentricity: 0.14125601 +/- 0.0001 Semi-Major Axis: 43.65447439 +/- 0.0059 Time of Perihelion: 2457195.3159 +/- 20.7 Perihelion: 37.48801741 +/- 0.0063 Aphelion: 49.82093136 +/- 0.0077 Period (y) 288.4373 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -19.34342301 +/- 0.0005 Ecliptic Y -32.52407201 +/- 0.0008 Ecliptic Z -1.57974621 +/- 0.0000 Ecliptic XDOT 0.00244229 +/- 0.0000 Ecliptic YDOT -0.00133168 +/- 0.0000 Ecliptic ZDOT 0.00105321 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.87454615 +/- 0.0008 Geocenter to KBO 36.86418955 +/- 0.0010 # Hcoef: 7.46
The following table shows the complete astrometric record for 01KO77. 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 (01KO77) followed by the observatory code and reference code for the source of the astrometry.
2001 05 23.16475 15 45 33.57 -22 22 17.4 22.5R 01KO77 807 Ce6595 2001 05 23.22862 15 45 33.21 -22 22 15.9 01KO77 807 Ce6595 2001 06 12.11955 15 43 48.17 -22 14 27.9 22.9 01KO77 304 Ce6595 2001 06 12.24378 15 43 47.57 -22 14 24.9 01KO77 304 Ce6595 2001 08 19.01992 15 41 11.58 -21 55 57.1 21.2R 01KO77 807 Ch1324 2001 08 20.01676 15 41 12.68 -21 55 51.0 01KO77 807 Ch1324 2001 08 21.02434 15 41 13.96 -21 55 45.2 01KO77 807 Ch1324 2003 05 31.39073 15 59 18.27 -21 49 11.2 23.7R 01KO77 568 Cn3253 2003 05 31.45532 15 59 17.89 -21 49 09.8 01KO77 568 Cn3253 2005 04 14.34392 16 17 37.28 -21 28 33.2 23.2R 01KO77 304 Cn3253 2005 04 14.36780 16 17 37.19 -21 28 32.5 01KO77 304 Cn3253 2005 05 12.45334 16 15 25.83 -21 20 22.6 24.0g 01KO77 568 C~0VDP 2005 05 12.47962 16 15 25.70 -21 20 22.3 23.9g 01KO77 568 C~0VDP 2005 05 12.51092 16 15 25.53 -21 20 21.6 24.1g 01KO77 568 C~0VDP 2005 05 13.53432 16 15 20.04 -21 20 02.0 23.9g 01KO77 568 C~0VDP 2005 06 07.07939 16 13 05.47 -21 11 54.6 23.3R 01KO77 304 Cn6472 2005 06 07.09563 16 13 05.39 -21 11 54.3 01KO77 304 Cn6472 2006 05 31.36304 16 20 56.14 -20 55 01.5 23.5r 01KO77 568 C~0VDP 2006 05 31.39811 16 20 55.94 -20 55 00.6 23.7r 01KO77 568 C~0VDP 2006 05 31.43376 16 20 55.75 -20 55 00.1 23.2r 01KO77 568 C~0VDP 2006 06 02.43669 16 20 44.68 -20 54 22.1 23.4r 01KO77 568 C~0VDP 2015 06 12.27108 17 23 33.26 -17 10 20.1 22.2R 01KO77 695 C~1hTQ 2015 06 12.32404 17 23 32.97 -17 10 19.3 01KO77 695 C~1hTQ 2015 06 12.34659 17 23 32.84 -17 10 19.3 01KO77 695 C~1hTQ 2016 05 29.32384 17 31 39.870 -16 43 21.97 22.0R 01KO77 G37 C~2bkQ 2016 05 29.37104 17 31 39.582 -16 43 21.65 01KO77 G37 C~2bkQ 2016 05 29.42970 17 31 39.278 -16 43 20.99 01KO77 G37 C~2bkQ
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 -0.09 0.00 0.15
2 0.0002 0.00 -0.14 0.00 0.15
3 0.0546 0.00 -0.08 0.00 0.04
4 0.0550 0.00 0.29 0.00 0.14
5 0.2405 0.00 -0.35 0.00 -0.36
6 0.2433 0.00 -0.53 0.00 -0.23
7 0.2460 0.00 0.16 0.00 -0.11
8 2.0212 0.00 1.15 0.00 -0.72
9 2.0213 0.00 0.83 0.00 -0.73
10 3.8937 0.00 -0.07 0.00 0.11
11 3.8938 0.00 -0.03 0.00 0.45
12 3.9707 0.00 -0.22 0.00 0.25
13 3.9707 0.00 -0.03 0.00 0.04
14 3.9708 0.00 -0.03 0.00 0.13
15 3.9736 0.00 -0.20 0.00 -0.05
16 4.0408 0.00 -0.14 0.00 0.09
17 4.0409 0.00 -0.00 0.00 0.07
18 5.0218 0.00 -0.24 0.00 0.23
19 5.0219 0.00 -0.28 0.00 0.46
20 5.0220 0.00 -0.12 0.00 0.28
21 5.0274 0.00 -0.14 0.00 0.04
22 14.0537 0.00 0.11 0.00 -0.32
23 14.0538 0.00 0.22 0.00 -0.09
24 14.0539 0.00 0.17 0.00 -0.34
25 15.0175 0.00 0.21 0.00 0.30
26 15.0177 0.00 -0.31 0.00 0.04
27 15.0178 0.00 -0.16 0.00 -0.04
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.
01KO77 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.656 43.656 43.656 ecceobj 0.142 0.142 0.142 incobj 20.782 20.782 20.782 qmin 36.410 36.415 36.398 qmax 51.876 51.865 51.876 amean 43.946 43.946 43.946 amin 43.585 43.576 43.589 amax 44.357 44.368 44.360 emean 0.153 0.153 0.153 emin 0.137 0.137 0.137 emax 0.170 0.170 0.170 imean 21.902 21.902 21.902 imin 21.384 21.395 21.383 imax 22.376 22.376 22.377 excite_mean 0.403 0.403 0.403 fracstop 1.000 1.000 1.000 cjmean 2.901 2.901 2.901 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 172.1 172.2 172.1 kozaiamp 180.0 180.0 179.9