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: 97RY6
# Created Wed Apr 24 01:09:34 2024
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 20
# Arc: 52.09d
# First observation: 1997/09/06
# Last observation: 1997/10/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000004 0.032451 -0.000005 0.004290 0.026125 0.000000
# Chi-squared of fit: 95.59 DOF: 34 RMS: 0.39
# Min/Max residuals: -0.85 1.09
# Exact a, adot, b, bdot, g, gdot:
1.640053E-05 2.355175E-02 4.323808E-06 4.009777E-03 2.472432E-02 1.629277E-03
# Covariance matrix:
2.2714E-13 2.1865E-11 -2.0200E-14 8.6071E-13 4.4100E-12 1.6064E-10
2.1865E-11 9.1560E-08 -6.9957E-11 2.8043E-09 1.3969E-08 -5.0839E-07
-2.0200E-14 -6.9957E-11 2.0790E-13 -3.4835E-12 -1.0708E-11 3.7785E-10
8.6071E-13 2.8043E-09 -3.4835E-12 1.0833E-10 4.2990E-10 -1.4926E-08
4.4100E-12 1.3969E-08 -1.0708E-11 4.2990E-10 2.1431E-09 -7.3821E-08
1.6064E-10 -5.0839E-07 3.7785E-10 -1.4926E-08 -7.3821E-08 4.0758E-06
# lat0 lon0 xBary yBary zBary JD0
8.162845 -1.817153 0.235574 0.137691 -0.961395 2450698.465781
# Heliocentric elements and errors
Epoch: 2450690.5000 = 1997/08/30
Mean Anomaly: 95.46616 +/- 10.570
Argument of Peri: 297.08551 +/- 9.630
Long of Asc Node: 318.72328 +/- 0.322
Inclination: 12.51085 +/- 0.084
Eccentricity: 0.06394746 +/- 0.0841
Semi-Major Axis: 41.00058938 +/- 0.3939
Time of Perihelion: 2425261.4280 +/- 2791.6
Perihelion: 38.37870592 +/- 3.4679
Aphelion: 43.62247283 +/- 3.4736
Period (y) 262.5387 +/- 3.78
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 40.98686099 +/- 0.0749
Ecliptic Y -1.53958534 +/- 0.0024
Ecliptic Z 5.74300917 +/- 0.0108
Ecliptic XDOT 0.00020259 +/- 0.0002
Ecliptic YDOT 0.00261061 +/- 0.0000
Ecliptic ZDOT 0.00046500 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.41588163 +/- 0.0742
Geocenter to KBO 40.44601035 +/- 0.0757
# Hcoef: 7.27
The following table shows the complete astrometric record for 97RY6. 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 (97RY6) followed by the observatory code and reference code for the source of the astrometry.
1997 09 06.96505 23 40 17.67 +06 45 51.4 23.4R 97RY6 950 C30629 1997 09 07.00791 23 40 17.50 +06 45 50.7 97RY6 950 C30629 1997 09 07.18564 23 40 16.67 +06 45 45.8 97RY6 950 C30629 1997 09 07.21435 23 40 16.54 +06 45 46.0 97RY6 950 C30629 1997 09 11.05709 23 39 58.98 +06 44 11.1 22.4R 97RY6 950 C30629 1997 09 11.08053 23 39 58.84 +06 44 10.2 97RY6 950 C30629 1997 09 11.09755 23 39 58.79 +06 44 09.8 97RY6 950 C30629 1997 09 11.17910 23 39 58.44 +06 44 07.7 97RY6 950 C30630 1997 09 11.19622 23 39 58.37 +06 44 07.6 97RY6 950 C30630 1997 09 23.25804 23 39 02.73 +06 38 43.7 97RY6 568 Ca0019 1997 09 23.29625 23 39 02.54 +06 38 42.7 97RY6 568 Ca0019 1997 10 05.18285 23 38 09.19 +06 32 57.3 97RY6 675 Ca0019 1997 10 05.24847 23 38 08.93 +06 32 55.0 97RY6 675 Ca0019 1997 10 05.31566 23 38 08.60 +06 32 53.0 23.4R 97RY6 675 Ca0019 1997 10 27.95010 23 36 40.86 +06 22 01.3 97RY6 950 Ca0107 1997 10 27.99852 23 36 40.67 +06 21 59.8 97RY6 950 Ca0107 1997 10 28.03883 23 36 40.56 +06 21 58.3 97RY6 950 Ca0107 1997 10 28.99441 23 36 37.46 +06 21 32.9 97RY6 950 Ca0107 1997 10 29.01314 23 36 37.43 +06 21 32.3 97RY6 950 Ca0107 1997 10 29.05009 23 36 37.27 +06 21 31.1 97RY6 950 Ca0107
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 -0.28 0.00 -0.36
2 0.0001 -2.60 0.23 0.37 -0.23
3 0.0006 -15.89 -0.16 0.83 -0.73
4 0.0007 -17.59 0.23 1.79 0.08
5 0.0112 -295.27 -0.02 19.58 0.35
6 0.0113 -297.55 -0.56 19.59 0.25
7 0.0113 -298.39 -0.14 19.52 0.10
8 0.0115 -304.01 0.26 19.68 -0.10
9 0.0116 -305.00 0.52 20.01 0.15
10 0.0446 -1194.26 -0.09 55.43 0.95
11 0.0447 -1197.26 -0.23 55.65 1.09
12 0.0773 -2064.05 0.08 58.15 -0.32
13 0.0774 -2068.53 0.35 57.60 -0.85
14 0.0776 -2073.83 -0.11 57.74 -0.67
15 0.1396 -3533.50 0.12 -13.76 0.23
16 0.1397 -3536.69 -0.33 -14.00 0.23
17 0.1398 -3538.80 -0.15 -14.71 -0.28
18 0.1424 -3591.34 0.03 -19.39 0.21
19 0.1425 -3591.99 0.42 -19.76 -0.06
20 0.1426 -3594.66 -0.19 -19.90 -0.01
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.
97RY6 quality flag:1 Type: CLASSICAL SCATEXTD 3:2E axisobj 40.984 44.398 39.892 ecceobj 0.060 0.191 0.087 incobj 12.538 12.303 12.677 qmin 37.394 35.007 32.085 qmax 44.355 53.437 47.728 amean 40.747 44.031 39.458 amin 40.432 43.609 38.869 amax 41.080 44.487 40.092 emean 0.060 0.183 0.113 emin 0.041 0.163 0.045 emax 0.080 0.203 0.192 imean 13.739 13.551 12.384 imin 12.246 12.609 9.441 imax 14.700 14.458 15.166 excite_mean 0.245 0.297 0.245 fracstop 1.000 1.000 1.000 cjmean 2.993 2.995 2.984 libcent 0 -180.0 -180.0 181.0 libamp 0 -180.0 -180.0 163.0 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 182.6 182.1 263.4 kozaiamp 180.0 179.9 179.9