The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 97QH4 # Created Fri May 2 02:36:26 2008 # Orbit generated from Bernstein formalism # Fitting 25 observations of 25 # Arc: 3.00y # First observation: 1997/08/27 # Last observation: 2000/08/27 Preliminary a, adot, b, bdot, g, gdot: -0.000174 0.023967 -0.000013 0.005592 0.024214 0.000000 # Chi-squared of fit: 110.77 DOF: 44 RMS: 0.37 # Min/Max residuals: -0.77 0.64 # Exact a, adot, b, bdot, g, gdot: 1.326867E-05 2.378506E-02 1.868118E-06 5.569155E-03 2.469312E-02 -1.600136E-03 # Covariance matrix: 1.5093E-13 -4.4863E-13 8.9747E-15 -8.5928E-14 1.7355E-13 -5.1384E-12 -4.4863E-13 3.2915E-12 -7.2141E-14 6.9282E-13 -6.5898E-13 4.1408E-11 8.9747E-15 -7.2141E-14 8.3657E-14 -4.7412E-14 1.3017E-14 -9.2303E-13 -8.5928E-14 6.9282E-13 -4.7412E-14 1.9234E-13 -1.2350E-13 8.8675E-12 1.7355E-13 -6.5898E-13 1.3017E-14 -1.2350E-13 6.4716E-13 -7.3963E-12 -5.1384E-12 4.1408E-11 -9.2303E-13 8.8675E-12 -7.3963E-12 5.2996E-10 # lat0 lon0 xBary yBary zBary JD0 -0.062123 -4.020474 0.369618 -0.001206 -0.930918 2450687.988791 # Heliocentric elements and errors Epoch: 2450680.5000 = 1997/08/20 Mean Anomaly: 301.32253 +/- 0.290 Argument of Peri: 66.76748 +/- 0.406 Long of Asc Node: 355.72310 +/- 0.000 Inclination: 13.14554 +/- 0.001 Eccentricity: 0.08142289 +/- 0.0008 Semi-Major Axis: 43.03929885 +/- 0.0069 Time of Perihelion: 2467490.3987 +/- 83.0 Perihelion: 39.53491460 +/- 0.0351 Aphelion: 46.54368311 +/- 0.0354 Period (y) 282.3618 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.30765655 +/- 0.0013 Ecliptic Y -3.27733934 +/- 0.0001 Ecliptic Z -0.04381822 +/- 0.0000 Ecliptic XDOT 0.00001310 +/- 0.0000 Ecliptic YDOT 0.00265055 +/- 0.0000 Ecliptic ZDOT 0.00061753 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.43748741 +/- 0.0013 Geocenter to KBO 40.49711794 +/- 0.0013 # Hcoef: 7.03
The following table shows the complete astrometric record for 97QH4. 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 (97QH4) followed by the observatory code and reference code for the source of the astrometry.
1997 08 27.48806 23 45 20.40 -01 39 18.6 22.5R 97QH4 568 C30562 1997 08 27.54196 23 45 20.12 -01 39 20.0 97QH4 568 C30562 1997 08 27.57699 23 45 20.01 -01 39 21.2 97QH4 568 C30562 1997 08 28.46564 23 45 16.22 -01 39 42.5 97QH4 568 C30562 1997 08 28.52310 23 45 15.95 -01 39 43.9 97QH4 568 C30562 1997 08 28.57356 23 45 15.73 -01 39 45.1 97QH4 568 C30562 1997 09 01.37881 23 44 59.42 -01 41 18.6 97QH4 568 C30562 1997 09 01.43322 23 44 59.15 -01 41 20.1 97QH4 568 C30562 1997 09 01.48345 23 44 58.93 -01 41 21.2 97QH4 568 C30562 1997 09 23.26736 23 43 19.95 -01 50 47.8 97QH4 568 Ca0017 1997 09 23.29155 23 43 19.87 -01 50 48.8 97QH4 568 Ca0017 1997 09 23.37704 23 43 19.46 -01 50 50.8 97QH4 568 Ca0017 1997 09 24.29769 23 43 15.24 -01 51 15.0 97QH4 568 Ca0017 1997 09 24.34213 23 43 15.00 -01 51 16.4 97QH4 568 Ca0017 1997 10 05.17260 23 42 26.46 -01 55 54.4 97QH4 675 Ca0017 1997 10 05.23823 23 42 26.16 -01 55 56.2 23.0R 97QH4 675 Ca0017 1997 10 05.30509 23 42 25.86 -01 55 57.8 97QH4 675 Ca0017 1998 06 29.53722 23 52 14.06 -00 37 18.8 97QH4 568 Ca1697 1998 06 30.57255 23 52 13.86 -00 37 16.2 97QH4 568 Ca1697 1998 07 01.51000 23 52 13.62 -00 37 14.2 97QH4 568 Ca1697 2000 08 08.32651 00 00 05.27 +00 58 01.3 23.0R 97QH4 809 Cc2106 2000 08 08.37515 00 00 05.10 +00 58 00.4 23.1R 97QH4 809 Cc2106 2000 08 08.40854 00 00 05.00 +00 57 59.9 23.2R 97QH4 809 Cc2106 2000 08 27.32153 23 58 56.23 +00 51 53.2 22.4R 97QH4 807 Cc0673 2000 08 27.39603 23 58 55.93 +00 51 51.8 97QH4 807 Cc0673
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 0.40 0.00 0.35 2 0.0001 -4.41 -0.30 0.38 0.54 3 0.0002 -6.40 0.11 -0.07 -0.04 4 0.0027 -67.01 -0.35 2.94 0.26 5 0.0028 -71.28 -0.64 3.26 0.37 6 0.0030 -74.79 -0.66 3.47 0.40 7 0.0134 -336.36 0.56 14.72 -0.13 8 0.0135 -340.67 0.12 14.95 -0.09 9 0.0137 -344.13 0.23 15.25 0.02 10 0.0733 -1931.18 -0.32 84.06 0.49 11 0.0734 -1932.67 -0.02 83.61 -0.04 12 0.0736 -1939.11 -0.08 84.22 0.26 13 0.0761 -2006.79 -0.22 87.10 0.27 14 0.0763 -2010.65 -0.77 87.24 0.25 15 0.1059 -2789.04 0.64 120.70 -0.47 16 0.1061 -2793.88 0.46 120.83 -0.57 17 0.1063 -2798.64 0.44 121.15 -0.50 18 0.8379 7173.76 0.19 949.48 -0.73 19 0.8408 7172.04 0.10 953.06 -0.68 20 0.8433 7169.53 0.29 956.33 -0.57 21 2.9482 15963.15 0.21 3395.97 0.18 22 2.9484 15960.44 -0.06 3396.15 0.15 23 2.9484 15958.85 0.04 3396.29 0.14 24 3.0002 14860.44 -0.31 3469.14 -0.05 25 3.0004 14855.73 -0.06 3469.64 0.15
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.
97QH4 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.049 43.068 43.030 ecceobj 0.085 0.084 0.086 incobj 13.154 13.153 13.155 qmin 38.576 38.660 38.516 qmax 47.164 47.137 47.180 amean 42.772 42.790 42.752 amin 42.431 42.451 42.418 amax 43.129 43.147 43.103 emean 0.079 0.078 0.080 emin 0.065 0.065 0.067 emax 0.095 0.094 0.096 imean 13.426 13.431 13.421 imin 12.730 12.735 12.712 imax 14.054 14.047 14.062 fracstop 1.000 1.000 1.000 cjmean 3.014 3.015 3.014 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 179.1 178.5 179.4 kozaiamp 180.0 179.8 180.0