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: 385266
# Created Wed Apr 24 01:07:45 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 35 observations of 35
# Arc: 20.12y
# First observation: 2001/08/20
# Last observation: 2021/10/03
# Chi-squared of fit: 33.78 DOF: 64 RMS: 0.17
# Min/Max residuals: -0.27 0.35
# Exact a, adot, b, bdot, g, gdot:
1.649887E-05 2.755224E-02 1.297355E-06 7.261878E-04 2.631669E-02 1.240061E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.005595 -35.431120 -0.039660 0.017654 -1.011701 2452141.626763
# Heliocentric elements and errors
Epoch: 2452142.5000 = 2001/08/21
Mean Anomaly: 25.11903 +/- 0.000
Argument of Peri: 2.63493 +/- 0.000
Long of Asc Node: 291.82281 +/- 0.000
Inclination: 1.80724 +/- 0.000
Eccentricity: 0.09350030 +/- 0.0000
Semi-Major Axis: 42.53386083 +/- 0.0000
Time of Perihelion: 2445072.7988 +/- 0.0
Perihelion: 38.55693218 +/- 0.0000
Aphelion: 46.51078947 +/- 0.0000
Period (y) 277.4025 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 31.80758509 +/- 0.0000
Ecliptic Y -22.57360112 +/- 0.0000
Ecliptic Z 0.66692133 +/- 0.0000
Ecliptic XDOT 0.00175710 +/- 0.0000
Ecliptic YDOT 0.00226290 +/- 0.0000
Ecliptic ZDOT 0.00007801 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.00939111 +/- 0.0000
Geocenter to KBO 37.99870477 +/- 0.0000
# Hcoef: 6.77
The following table shows the complete astrometric record for 385266. 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 (385266) followed by the observatory code and reference code for the source of the astrometry.
2001 08 20.12602 21 46 05.22 -12 23 02.6 21.5R 385266 807 Cd7926 2001 08 20.20431 21 46 04.84 -12 23 04.5 385266 807 Cd7926 2001 08 21.13965 21 46 00.22 -12 23 28.1 21.5R 385266 807 Cd7926 2001 08 21.21386 21 45 59.84 -12 23 29.9 385266 807 Cd7926 2001 09 12.23025 21 44 16.19 -12 32 22.8 22.3R 385266 695 Cd7926 2001 09 12.27730 21 44 16.00 -12 32 23.7 385266 695 Cd7926 2002 08 09.16131 21 53 00.80 -11 44 22.6 21.1R 385266 807 Cg3217 2002 08 09.30756 21 53 00.08 -11 44 26.0 385266 807 Cg3217 2002 08 10.34052 21 52 55.03 -11 44 51.7 385266 807 Cg3218 2002 11 06.26135 21 47 58.96 -12 11 26.7 22.5R 385266 568 Cl8341 2002 11 07.23487 21 47 58.94 -12 11 27.6 385266 568 Cl8341 2003 06 23.51400 22 01 53.48 -10 55 20.3 22.9i 385266 568 Cq9101 2003 06 23.56540 22 01 53.38 -10 55 20.7 22.7i 385266 568 Cq9101 2003 06 23.61406 22 01 53.25 -10 55 21.3 22.7i 385266 568 Cq9101 2003 08 31.32283 21 57 11.74 -11 19 24.4 22.7g 385266 568 Cq9101 2003 08 31.35679 21 57 11.57 -11 19 25.5 23.0g 385266 568 Cq9101 2003 08 31.38376 21 57 11.44 -11 19 26.1 23.1g 385266 568 Cq9101 2004 06 24.48281 22 07 39.99 -10 21 09.0 22.3R 385266 568 Ck9812 2004 06 24.58112 22 07 39.76 -10 21 10.0 385266 568 Ck9812 2004 08 12.40035 22 04 35.64 -10 36 55.0 22.7r 385266 568 Cq9101 2004 08 12.43057 22 04 35.49 -10 36 56.0 22.6r 385266 568 Cq9101 2004 08 12.46510 22 04 35.32 -10 36 56.6 22.6r 385266 568 Cq9101 2004 08 14.42398 22 04 25.91 -10 37 46.9 22.6r 385266 568 Cq9101 2007 05 23.05031 22 25 06.65 -08 36 29.4 23.0R 385266 250 S~06AQ 2007 05 23.05725 22 25 06.66 -08 36 29.4 385266 250 S~06AQ 2007 05 23.06420 22 25 06.66 -08 36 29.3 385266 250 S~06AQ 2007 05 23.07114 22 25 06.67 -08 36 29.2 385266 250 S~06AQ 2013 10 06.30376 22 52 14.52 -05 38 47.2 22.5R 385266 695 C~0zdD 2013 10 07.20161 22 52 11.09 -05 39 09.1 385266 695 C~0zdD 2021 10 01.02330 23 36 25.75 -00 45 37.6 23.3V 385266 W84 C~590d 2021 10 01.07319 23 36 25.53 -00 45 39.0 23.5V 385266 W84 C~590d 2021 10 01.13693 23 36 25.22 -00 45 40.8 23.6V 385266 W84 C~590d 2021 10 03.147660 23 36 16.390 -00 46 39.49 22.5G 385266 G37 C~590d 2021 10 03.200670 23 36 16.153 -00 46 41.04 385266 G37 C~590d 2021 10 03.253560 23 36 15.925 -00 46 42.45 385266 G37 C~590d
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 0.07 0.00 -0.16
2 0.0002 0.00 0.27 0.00 -0.09
3 0.0028 0.00 0.18 0.00 -0.20
4 0.0030 0.00 0.06 0.00 -0.13
5 0.0633 0.00 -0.09 0.00 -0.16
6 0.0634 0.00 0.18 0.00 -0.00
7 0.9693 0.00 0.31 0.00 -0.14
8 0.9697 0.00 0.31 0.00 0.09
9 0.9725 0.00 -0.26 0.00 0.11
10 1.2132 0.00 -0.12 0.00 -0.26
11 1.2159 0.00 0.12 0.00 0.32
12 1.8409 0.00 -0.24 0.00 -0.13
13 1.8410 0.00 0.01 0.00 -0.01
14 1.8412 0.00 -0.27 0.00 -0.13
15 2.0293 0.00 -0.14 0.00 0.17
16 2.0294 0.00 -0.20 0.00 -0.06
17 2.0295 0.00 -0.17 0.00 0.04
18 2.8456 0.00 -0.07 0.00 -0.22
19 2.8459 0.00 -0.16 0.00 -0.21
20 2.9795 0.00 0.01 0.00 0.01
21 2.9796 0.00 -0.02 0.00 -0.21
22 2.9797 0.00 -0.04 0.00 0.07
23 2.9851 0.00 0.35 0.00 0.18
24 5.7548 0.00 0.00 0.00 0.35
25 5.7548 0.00 0.02 0.00 0.28
26 5.7548 0.00 -0.11 0.00 0.32
27 5.7548 0.00 -0.10 0.00 0.35
28 12.1292 0.00 -0.21 0.00 -0.00
29 12.1316 0.00 -0.06 0.00 0.17
30 20.1147 0.00 0.02 0.00 -0.11
31 20.1148 0.00 0.09 0.00 -0.06
32 20.1150 0.00 -0.25 0.00 -0.00
33 20.1205 0.00 0.08 0.00 -0.13
34 20.1207 0.00 0.06 0.00 -0.15
35 20.1208 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.
385266 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.774 42.774 42.774 ecceobj 0.098 0.098 0.098 incobj 1.802 1.802 1.802 qmin 37.580 37.556 37.578 qmax 48.219 48.117 48.102 amean 42.700 42.694 42.699 amin 42.329 42.325 42.325 amax 43.102 43.064 43.072 emean 0.090 0.089 0.090 emin 0.060 0.058 0.059 emax 0.119 0.118 0.117 imean 4.333 4.282 4.312 imin 2.841 2.747 2.796 imax 5.536 5.558 5.553 excite_mean 0.118 0.117 0.117 fracstop 1.000 1.000 1.000 cjmean 3.069 3.069 3.069 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 178.4 178.4 178.4 kozaiamp 180.0 180.0 179.9