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: 01KW76
# Created Fri Apr 19 01:10:29 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 29 observations of 29
# Arc: 6.95y
# First observation: 2001/05/22
# Last observation: 2008/05/05
# Chi-squared of fit: 31.38 DOF: 52 RMS: 0.18
# Min/Max residuals: -0.43 0.44
# Exact a, adot, b, bdot, g, gdot:
1.700432E-05 2.584105E-02 -3.519419E-06 -4.756924E-03 2.544648E-02 -4.811942E-03
# Covariance matrix:
2.5573E-13 -8.3625E-14 -4.3952E-15 6.3628E-15 7.7138E-14 -2.1825E-13
-8.3625E-14 7.3715E-14 8.4610E-15 -1.1500E-14 1.3410E-14 3.8880E-13
-4.3952E-15 8.4610E-15 1.9176E-13 -4.1435E-14 5.6705E-15 5.5036E-14
6.3628E-15 -1.1500E-14 -4.1435E-14 1.3395E-14 -6.7311E-15 -7.4193E-14
7.7138E-14 1.3410E-14 5.6705E-15 -6.7311E-15 2.2018E-13 2.1968E-13
-2.1825E-13 3.8880E-13 5.5036E-14 -7.4193E-14 2.1968E-13 2.5033E-12
# lat0 lon0 xBary yBary zBary JD0
0.786219 -122.415758 -0.062930 0.013824 -1.016709 2452051.694693
# Heliocentric elements and errors
Epoch: 2452052.5000 = 2001/05/23
Mean Anomaly: 313.94973 +/- 0.011
Argument of Peri: 242.85297 +/- 0.016
Long of Asc Node: 61.81831 +/- 0.000
Inclination: 10.48743 +/- 0.000
Eccentricity: 0.21294564 +/- 0.0001
Semi-Major Axis: 45.72671008 +/- 0.0043
Time of Perihelion: 2466499.6770 +/- 14.2
Perihelion: 35.98940676 +/- 0.0046
Aphelion: 55.46401341 +/- 0.0061
Period (y) 309.2168 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -21.55206598 +/- 0.0004
Ecliptic Y -34.05871954 +/- 0.0006
Ecliptic Z 0.53909820 +/- 0.0000
Ecliptic XDOT 0.00261242 +/- 0.0000
Ecliptic YDOT -0.00105703 +/- 0.0000
Ecliptic ZDOT -0.00051867 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.30865743 +/- 0.0006
Geocenter to KBO 39.29831804 +/- 0.0007
# Hcoef: 7.42
The following table shows the complete astrometric record for 01KW76. 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 (01KW76) followed by the observatory code and reference code for the source of the astrometry.
2001 05 22.19395 15 42 00.07 -18 51 18.1 23.0R 01KW76 807 Cd1817 2001 05 22.27331 15 41 59.67 -18 51 17.1 01KW76 807 Cd1817 2001 06 10.01799 15 40 26.18 -18 47 05.2 22.5R 01KW76 304 Cd1817 2001 06 10.09275 15 40 25.82 -18 47 04.1 01KW76 304 Cd1817 2001 08 19.01261 15 37 48.36 -18 42 30.6 22.5R 01KW76 807 Ch1324 2001 08 20.00889 15 37 49.28 -18 42 37.3 01KW76 807 Ch1324 2001 08 21.01634 15 37 50.39 -18 42 45.2 01KW76 807 Ch1324 2004 07 16.09908 15 55 51.42 -20 28 02.8 22.2R 01KW76 807 Cn3087 2004 07 16.19933 15 55 51.17 -20 28 02.3 01KW76 807 Cn3087 2005 04 10.40906 16 09 24.04 -21 18 22.5 23.8R 01KW76 695 Cn3087 2005 04 10.47197 16 09 23.83 -21 18 22.5 01KW76 695 Cn3087 2005 04 11.46255 16 09 20.27 -21 18 15.8 01KW76 695 Cn3087 2005 04 14.33991 16 09 09.58 -21 17 56.5 23.7R 01KW76 304 Cn3253 2005 04 14.36388 16 09 09.45 -21 17 56.1 01KW76 304 Cn3253 2005 05 12.44678 16 06 59.45 -21 13 37.1 24.0g 01KW76 568 C~0VDP 2005 05 12.47306 16 06 59.31 -21 13 36.8 24.1g 01KW76 568 C~0VDP 2005 05 12.50436 16 06 59.14 -21 13 36.5 23.8g 01KW76 568 C~0VDP 2005 05 13.52691 16 06 53.79 -21 13 25.2 24.0g 01KW76 568 C~0VDP 2005 07 31.24716 16 01 24.14 -21 01 43.8 22.9i 01KW76 568 C~0VDP 2005 07 31.29138 16 01 24.06 -21 01 43.7 23.0i 01KW76 568 C~0VDP 2005 07 31.33595 16 01 23.98 -21 01 43.7 23.0i 01KW76 568 C~0VDP 2006 05 25.38517 16 12 10.52 -21 45 11.2 23.6r 01KW76 568 C~0VDP 2006 05 25.42216 16 12 10.31 -21 45 10.8 23.5r 01KW76 568 C~0VDP 2006 05 25.46632 16 12 10.07 -21 45 10.2 23.6r 01KW76 568 C~0VDP 2006 05 26.45505 16 12 04.74 -21 44 59.2 01KW76 568 C~0VDP 2007 05 15.34748 16 19 30.76 -22 20 14.0 01KW76 675 C~0VDP 2007 05 15.35229 16 19 30.74 -22 20 13.9 01KW76 675 C~0VDP 2008 05 05.37188 16 26 49.72 -22 53 58.4 01KW76 695 Cz0380 2008 05 05.40317 16 26 49.55 -22 53 58.4 01KW76 695 Cz0380
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 -0.17 0.00 0.16
2 0.0002 0.00 0.07 0.00 0.03
3 0.0515 0.00 0.10 0.00 -0.16
4 0.0517 0.00 0.07 0.00 0.03
5 0.2432 0.00 0.44 0.00 -0.00
6 0.2459 0.00 -0.36 0.00 0.36
7 0.2487 0.00 0.00 0.00 -0.06
8 3.1510 0.00 -0.08 0.00 -0.19
9 3.1513 0.00 0.41 0.00 -0.26
10 3.8856 0.00 -0.02 0.00 -0.05
11 3.8858 0.00 0.24 0.00 -0.43
12 3.8885 0.00 -0.07 0.00 0.09
13 3.8964 0.00 0.16 0.00 0.08
14 3.8964 0.00 -0.38 0.00 0.31
15 3.9733 0.00 0.04 0.00 -0.01
16 3.9734 0.00 0.03 0.00 -0.00
17 3.9735 0.00 -0.03 0.00 -0.05
18 3.9763 0.00 -0.19 0.00 -0.05
19 4.1918 0.00 -0.01 0.00 0.07
20 4.1919 0.00 -0.13 0.00 0.08
21 4.1920 0.00 -0.25 0.00 -0.02
22 5.0081 0.00 0.05 0.00 -0.18
23 5.0082 0.00 -0.05 0.00 -0.18
24 5.0083 0.00 -0.02 0.00 -0.06
25 5.0110 0.00 0.06 0.00 0.16
26 5.9799 0.00 -0.16 0.00 -0.14
27 5.9799 0.00 -0.07 0.00 -0.09
28 6.9546 0.00 0.24 0.00 0.41
29 6.9547 0.00 0.05 0.00 0.18
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.
01KW76 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 45.758 45.758 45.758 ecceobj 0.215 0.215 0.215 incobj 10.489 10.489 10.489 qmin 35.572 35.572 35.572 qmax 57.169 57.038 57.034 amean 46.100 46.074 46.105 amin 45.675 45.639 45.692 amax 46.609 46.591 46.626 emean 0.209 0.207 0.209 emin 0.193 0.191 0.193 emax 0.227 0.226 0.226 imean 8.864 8.786 8.861 imin 8.028 7.939 8.024 imax 9.753 9.660 9.745 excite_mean 0.259 0.257 0.259 fracstop 1.000 1.000 1.000 cjmean 3.044 3.045 3.044 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 179.6 180.1 179.4 kozaiamp 180.0 180.0 180.0