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: 01KG77 # Created Sun Dec 22 02:08:16 2024 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 1.94y # First observation: 2001/05/23 # Last observation: 2003/05/01 Preliminary a, adot, b, bdot, g, gdot: -0.000095 0.036125 -0.000045 0.009878 0.029424 0.000000 # Chi-squared of fit: 34.35 DOF: 24 RMS: 0.27 # Min/Max residuals: -0.45 0.53 # Exact a, adot, b, bdot, g, gdot: 2.101876E-05 3.592817E-02 4.729071E-06 9.822706E-03 2.949374E-02 -4.934479E-03 # Covariance matrix: 2.8452E-13 -2.8837E-13 3.9358E-15 -2.3622E-14 6.7835E-14 -1.3447E-12 -2.8837E-13 1.0656E-12 -4.7771E-14 2.3571E-13 3.2226E-13 1.3375E-11 3.9358E-15 -4.7771E-14 2.4103E-13 -1.9531E-13 -2.6007E-14 -7.9541E-13 -2.3622E-14 2.3571E-13 -1.9531E-13 3.0359E-13 1.1422E-13 3.8757E-12 6.7835E-14 3.2226E-13 -2.6007E-14 1.1422E-13 4.9228E-13 6.4667E-12 -1.3447E-12 1.3375E-11 -7.9541E-13 3.8757E-12 6.4667E-12 2.1987E-10 # lat0 lon0 xBary yBary zBary JD0 -2.443252 -118.120510 -0.003540 -0.043564 -1.017990 2452052.691053 # Heliocentric elements and errors Epoch: 2452050.5000 = 2001/05/21 Mean Anomaly: 351.36011 +/- 0.022 Argument of Peri: 15.69762 +/- 0.067 Long of Asc Node: 250.46661 +/- 0.000 Inclination: 15.51962 +/- 0.001 Eccentricity: 0.44451845 +/- 0.0002 Semi-Major Axis: 61.10409205 +/- 0.0195 Time of Perihelion: 2456237.5649 +/- 10.5 Perihelion: 33.94219552 +/- 0.0184 Aphelion: 88.26598858 +/- 0.0318 Period (y) 477.6542 +/- 0.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -16.43911665 +/- 0.0004 Ecliptic Y -30.77134742 +/- 0.0007 Ecliptic Z -1.44522771 +/- 0.0000 Ecliptic XDOT 0.00313043 +/- 0.0000 Ecliptic YDOT -0.00120032 +/- 0.0000 Ecliptic ZDOT 0.00093072 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.91717430 +/- 0.0007 Geocenter to KBO 33.90550082 +/- 0.0008 # Hcoef: 8.06
The following table shows the complete astrometric record for 01KG77. 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 (01KG77) followed by the observatory code and reference code for the source of the astrometry.
2001 05 23.19031 15 56 59.83 -22 55 50.2 23.0R 01KG77 807 Cd1817 2001 05 23.25457 15 56 59.46 -22 55 48.8 01KG77 807 Cd1817 2001 06 13.06604 15 55 02.40 -22 47 55.8 23.3R 01KG77 304 Cd1817 2001 06 13.19097 15 55 01.72 -22 47 53.2 01KG77 304 Cd1817 2001 07 24.30788 15 52 24.59 -22 34 25.4 01KG77 568 Cd4418 2001 07 25.27436 15 52 22.75 -22 34 11.1 01KG77 568 Cd4418 2002 04 06.28355 16 10 09.54 -23 00 19.8 22.3R 01KG77 807 Cf4617 2002 04 07.28868 16 10 06.14 -23 00 08.7 01KG77 807 Cf4617 2002 04 07.38484 16 10 05.83 -23 00 07.5 01KG77 807 Cf4617 2002 07 10.97191 16 02 09.69 -22 30 04.7 23.0R 01KG77 304 Cf9823 2002 07 11.10104 16 02 09.21 -22 30 02.4 01KG77 304 Cf9823 2002 07 13.06484 16 02 02.48 -22 29 27.9 01KG77 304 Cf9823 2002 07 13.09932 16 02 02.35 -22 29 27.3 01KG77 304 Cf9823 2003 05 01.52812 16 17 39.47 -22 42 36.0 24.1R 01KG77 568 Ch9866 2003 05 01.57370 16 17 39.23 -22 42 35.2 01KG77 568 Ch9866
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 -0.36 0.00 0.11
2 0.0002 -5.29 -0.22 0.33 0.10
3 0.0572 -1685.89 0.26 131.27 0.26
4 0.0575 -1695.63 0.22 131.87 0.02
5 0.1701 -3991.49 0.11 467.41 0.31
6 0.1727 -4019.43 -0.23 476.01 0.16
7 0.8709 10764.11 0.03 1837.63 0.20
8 0.8736 10715.80 -0.04 1840.01 -0.45
9 0.8739 10711.36 0.34 1840.41 -0.32
10 1.1329 3893.96 0.11 2369.32 -0.37
11 1.1332 3886.98 -0.04 2370.27 -0.38
12 1.1386 3788.74 0.09 2385.90 -0.34
13 1.1387 3786.85 -0.06 2386.14 -0.37
14 1.9393 16728.50 -0.09 3983.71 0.51
15 1.9394 16725.07 -0.12 3983.94 0.53
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.
01KG77 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 61.175 61.233 61.117 ecceobj 0.446 0.446 0.445 incobj 15.513 15.513 15.513 qmin 32.345 32.115 32.268 qmax 92.620 92.621 91.244 amean 61.081 61.229 60.248 amin 59.493 58.976 58.983 amax 62.968 62.675 62.591 emean 0.452 0.457 0.441 emin 0.428 0.422 0.419 emax 0.475 0.478 0.468 imean 15.840 15.455 16.070 imin 14.397 14.000 14.543 imax 16.949 16.917 17.519 excite_mean 0.528 0.529 0.521 fracstop 1.000 1.000 1.000 cjmean 2.937 2.937 2.938 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 177.4 166.5 162.5 kozaiamp 180.0 179.9 180.0