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: 97CW29
# Created Wed Nov 27 02:07:52 2024
# Orbit generated from Bernstein formalism
# Fitting 11 observations of 11
# Arc: 27.06d
# First observation: 1997/02/08
# Last observation: 1997/03/07
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.031281 0.000000 0.007472 0.025882 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 22.84 DOF: 17 RMS: 0.25
# Min/Max residuals: -0.39 0.48
# Exact a, adot, b, bdot, g, gdot:
1.538701E-05 2.609469E-02 5.133083E-06 7.349860E-03 2.502291E-02 6.875959E-03
# Covariance matrix:
6.6978E-13 5.7982E-10 1.3765E-15 1.6635E-11 1.0540E-10 -4.7905E-09
5.7982E-10 7.8826E-07 2.3343E-12 2.1518E-08 1.3951E-07 -8.5746E-06
1.3765E-15 2.3343E-12 2.1539E-13 -3.1838E-12 3.7988E-13 -4.8989E-11
1.6635E-11 2.1518E-08 -3.1838E-12 7.3874E-10 3.8772E-09 -1.8591E-07
1.0540E-10 1.3951E-07 3.7988E-13 3.8772E-09 2.4905E-08 -1.3701E-06
-4.7905E-09 -8.5746E-06 -4.8989E-11 -1.8591E-07 -1.3701E-06 1.9787E-04
# lat0 lon0 xBary yBary zBary JD0
2.710703 117.934579 -0.367372 0.043594 -0.923912 2450487.801940
# Heliocentric elements and errors
Epoch: 2450480.5000 = 1997/02/01
Mean Anomaly: 26.32018 +/- 20.990
Argument of Peri: 312.34065 +/- 57.759
Long of Asc Node: 109.16358 +/- 0.325
Inclination: 16.00987 +/- 0.534
Eccentricity: 0.37755635 +/- 0.4981
Semi-Major Axis: 57.39911673 +/- 23.1884
Time of Perihelion: 2438867.5509 +/- 6020.6
Perihelion: 35.72771547 +/- 32.0281
Aphelion: 79.07051800 +/- 42.8702
Period (y) 434.8766 +/- 263.53
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.45241033 +/- 0.1179
Ecliptic Y 35.90637252 +/- 0.2224
Ecliptic Z 1.89019421 +/- 0.0119
Ecliptic XDOT -0.00285064 +/- 0.0007
Ecliptic YDOT -0.00070141 +/- 0.0014
Ecliptic ZDOT 0.00083868 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 40.88076185 +/- 0.2033
Geocenter to KBO 39.96337464 +/- 0.2520
# Hcoef: 6.73
The following table shows the complete astrometric record for 97CW29. 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 (97CW29) followed by the observatory code and reference code for the source of the astrometry.
1997 02 08.30122 08 02 26.90 +23 13 48.8 22.5R 97CW29 568 C30145 1997 02 08.34998 08 02 26.66 +23 13 49.4 97CW29 568 C30145 1997 02 08.40345 08 02 26.40 +23 13 50.3 97CW29 568 C30145 1997 02 09.26711 08 02 22.18 +23 14 05.0 97CW29 568 C30145 1997 02 09.29503 08 02 22.03 +23 14 05.6 97CW29 568 C30145 1997 02 09.32301 08 02 21.89 +23 14 06.1 97CW29 568 C30145 1997 02 09.35228 08 02 21.77 +23 14 06.6 97CW29 568 C30145 1997 03 03.22184 08 00 49.54 +23 19 08.3 97CW29 696 C30196 1997 03 03.28507 08 00 49.26 +23 19 09.1 97CW29 696 C30196 1997 03 07.27905 08 00 36.08 +23 19 50.9 97CW29 696 C30196 1997 03 07.36241 08 00 35.80 +23 19 51.7 97CW29 696 C30196
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 0.23 0.00 -0.10
2 0.0001 -3.36 0.30 -0.08 -0.31
3 0.0003 -7.05 0.38 0.07 -0.28
4 0.0026 -66.99 -0.16 2.68 0.09
5 0.0027 -69.14 -0.36 2.84 0.18
6 0.0028 -71.13 -0.39 2.94 0.21
7 0.0029 -72.85 -0.07 3.10 0.29
8 0.0628 -1378.43 0.48 42.74 -0.16
9 0.0629 -1382.37 -0.29 42.76 -0.20
10 0.0739 -1568.62 0.03 47.43 0.16
11 0.0741 -1572.55 -0.16 47.45 0.13
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.
97CW29 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0