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: 01KY76
# Created Fri Aug 29 01:08:14 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 38 observations of 38
# Arc: 24.18y
# First observation: 2001/05/22
# Last observation: 2025/07/26
# Chi-squared of fit: 128.43 DOF: 70 RMS: 0.32
# Min/Max residuals: -0.70 0.89
# Exact a, adot, b, bdot, g, gdot:
1.650396E-05 2.578877E-02 -1.022324E-07 -1.691370E-03 2.629503E-02 -6.099218E-03
# Covariance matrix:
8.5347E-14 -3.4082E-14 -1.8563E-15 2.2746E-15 4.4419E-14 -4.0410E-14
-3.4082E-14 3.3670E-14 1.9956E-15 -2.3113E-15 -1.3097E-14 4.0731E-14
-1.8563E-15 1.9956E-15 4.9661E-14 -2.4983E-15 -5.3312E-16 2.4273E-15
2.2746E-15 -2.3113E-15 -2.4983E-15 5.2071E-16 1.3288E-15 -2.8474E-15
4.4419E-14 -1.3097E-14 -5.3312E-16 1.3288E-15 1.8750E-13 -2.5271E-14
-4.0410E-14 4.0731E-14 2.4273E-15 -2.8474E-15 -2.5271E-14 5.0273E-14
# lat0 lon0 xBary yBary zBary JD0
1.311552 -108.416140 0.183863 0.022805 -1.001769 2452051.757123
# Heliocentric elements and errors
Epoch: 2452052.5000 = 2001/05/23
Mean Anomaly: 283.91849 +/- 0.009
Argument of Peri: 264.36223 +/- 0.012
Long of Asc Node: 90.03264 +/- 0.000
Inclination: 3.97740 +/- 0.000
Eccentricity: 0.23471588 +/- 0.0000
Semi-Major Axis: 39.10093979 +/- 0.0026
Time of Perihelion: 2470926.1479 +/- 7.4
Perihelion: 29.92332844 +/- 0.0020
Aphelion: 48.27855115 +/- 0.0033
Period (y) 244.5057 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -12.49809889 +/- 0.0002
Ecliptic Y -36.96038757 +/- 0.0006
Ecliptic Z 0.87046284 +/- 0.0000
Ecliptic XDOT 0.00273852 +/- 0.0000
Ecliptic YDOT -0.00024744 +/- 0.0000
Ecliptic ZDOT -0.00019040 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.02616409 +/- 0.0006
Geocenter to KBO 38.03017971 +/- 0.0006
# Hcoef: 6.21
The following table shows the complete astrometric record for 01KY76. 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 (01KY76) followed by the observatory code and reference code for the source of the astrometry.
2001 05 22.25638 16 40 58.52 -20 52 24.8 21.6R 01KY76 807 Cd1817 2001 05 22.34551 16 40 58.04 -20 52 23.9 01KY76 807 Cd1817 2001 06 10.04604 16 39 16.00 -20 49 24.4 22.5R 01KY76 304 Cd1817 2001 06 10.12100 16 39 15.59 -20 49 23.7 01KY76 304 Cd1817 2001 08 19.07508 16 35 10.54 -20 43 53.6 21.1R 01KY76 807 Cd7687 2001 08 20.08320 16 35 10.09 -20 43 55.7 01KY76 807 Cd7687 2001 08 21.08681 16 35 09.74 -20 43 57.8 01KY76 807 Cd7687 2002 04 06.29816 16 50 26.16 -21 15 21.4 20.9R 01KY76 807 Ch1324 2002 04 07.30429 16 50 23.71 -21 15 17.1 01KY76 807 Ch1324 2002 04 07.40001 16 50 23.44 -21 15 16.3 01KY76 807 Ch1324 2002 04 11.43605 16 50 12.57 -21 14 56.0 20.0R 01KY76 695 Cg5781 2002 04 11.48065 16 50 12.44 -21 14 55.3 01KY76 695 Cg5781 2002 04 11.55345 16 50 12.25 -21 14 54.9 21.5R 01KY76 568 Cf8904 2002 04 11.62587 16 50 12.05 -21 14 54.6 01KY76 568 Cf8904 2002 06 04.30583 16 46 03.04 -21 07 50.9 01KY76 675 Cf8904 2002 06 04.34488 16 46 02.80 -21 07 50.3 01KY76 675 Cf8904 2002 06 06.42192 16 45 51.32 -21 07 31.2 01KY76 568 Cf8904 2002 06 06.42550 16 45 51.30 -21 07 31.1 01KY76 568 Cf8904 2002 06 06.43219 16 45 51.25 -21 07 31.0 01KY76 568 Cf8904 2002 06 06.44006 16 45 51.21 -21 07 31.0 01KY76 568 Cf8904 2002 06 06.44520 16 45 51.18 -21 07 30.8 01KY76 568 Cf8904 2002 06 06.44893 16 45 51.15 -21 07 31.0 01KY76 568 Cf8904 2002 06 06.45257 16 45 51.15 -21 07 30.8 01KY76 568 Cf8904 2002 06 06.45925 16 45 51.10 -21 07 31.0 01KY76 568 Cf8904 2002 06 06.46713 16 45 51.03 -21 07 30.7 01KY76 568 Cf8904 2002 06 06.47226 16 45 51.02 -21 07 30.8 01KY76 568 Cf8904 2002 06 15.29564 16 45 02.68 -21 06 15.4 22.6R 01KY76 695 Cf8904 2002 06 15.32159 16 45 02.53 -21 06 15.3 22.5R 01KY76 695 Cf8904 2002 07 13.17687 16 42 47.53 -21 02 57.9 21.7R 01KY76 304 Cf9823 2002 07 13.19883 16 42 47.43 -21 02 57.8 01KY76 304 Cf9823 2003 05 31.47406 16 52 46.53 -21 25 14.5 22.1R 01KY76 568 Ci1422 2003 05 31.50678 16 52 46.33 -21 25 14.0 01KY76 568 Ci1422 2003 06 01.50942 16 52 40.81 -21 25 05.9 01KY76 568 Ci1422 2022 07 04.339500 19 11 27.836 -23 34 12.69 22.0G 01KY76 G37 C~5i0v 2022 07 04.404860 19 11 27.409 -23 34 13.36 01KY76 G37 C~5i0v 2025 07 26.380308 19 35 08.093 -23 11 52.27 21.7w 01KY76 F52 C~91RW 2025 07 26.389362 19 35 08.027 -23 11 52.50 21.9w 01KY76 F52 C~91RW 2025 07 26.393890 19 35 08.010 -23 11 52.45 21.6w 01KY76 F52 C~91RW
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 -0.24 0.00 -0.16
2 0.0002 0.00 -0.15 0.00 -0.14
3 0.0514 0.00 -0.05 0.00 -0.01
4 0.0516 0.00 -0.01 0.00 0.01
5 0.2432 0.00 -0.01 0.00 -0.10
6 0.2459 0.00 0.18 0.00 -0.21
7 0.2487 0.00 0.22 0.00 -0.11
8 0.8735 0.00 -0.18 0.00 -0.15
9 0.8762 0.00 -0.01 0.00 -0.67
10 0.8765 0.00 -0.34 0.00 -0.34
11 0.8876 0.00 -0.22 0.00 -0.70
12 0.8877 0.00 -0.18 0.00 -0.25
13 0.8879 0.00 0.06 0.00 -0.28
14 0.8881 0.00 0.32 0.00 -0.38
15 1.0350 0.00 0.38 0.00 -0.44
16 1.0351 0.00 0.08 0.00 -0.18
17 1.0408 0.00 0.15 0.00 0.54
18 1.0408 0.00 0.16 0.00 0.61
19 1.0409 0.00 -0.03 0.00 0.65
20 1.0409 0.00 0.03 0.00 0.58
21 1.0409 0.00 0.02 0.00 0.74
22 1.0409 0.00 -0.12 0.00 0.50
23 1.0409 0.00 0.19 0.00 0.67
24 1.0409 0.00 0.00 0.00 0.41
25 1.0410 0.00 -0.38 0.00 0.64
26 1.0410 0.00 -0.10 0.00 0.49
27 1.0651 0.00 -0.22 0.00 -0.10
28 1.0652 0.00 -0.33 0.00 -0.22
29 1.1415 0.00 0.00 0.00 -0.30
30 1.1415 0.00 -0.13 0.00 -0.33
31 2.0239 0.00 0.34 0.00 -0.42
32 2.0240 0.00 0.11 0.00 -0.19
33 2.0267 0.00 0.89 0.00 -0.26
34 21.1173 0.00 -0.09 0.00 -0.04
35 21.1174 0.00 -0.32 0.00 0.06
36 24.1783 0.00 0.14 0.00 0.02
37 24.1783 0.00 0.00 0.00 -0.08
38 24.1783 0.00 0.17 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.
01KY76 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.170 39.170 39.170 ecceobj 0.237 0.237 0.237 incobj 3.975 3.975 3.975 qmin 29.480 29.480 29.483 qmax 49.944 49.947 49.946 amean 39.455 39.455 39.456 amin 39.025 39.016 39.034 amax 39.977 39.973 39.989 emean 0.235 0.235 0.235 emin 0.220 0.220 0.220 emax 0.250 0.250 0.250 imean 1.607 1.604 1.607 imin 0.652 0.652 0.652 imax 2.524 2.524 2.524 excite_mean 0.237 0.237 0.237 fracstop 1.000 1.000 1.000 cjmean 2.987 2.987 2.987 libcent 0 180.3 180.3 180.6 libamp 0 75.5 75.9 75.7 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 201.3 201.7 201.2 kozaiamp 179.7 179.8 179.7