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: 22RW88
# Created Sat May 4 01:19:06 2024
# Orbit generated from Bernstein formalism
# Fitting 7 observations of 7
# Arc: 1.10y
# First observation: 2022/09/01
# Last observation: 2023/10/07
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.011386 0.000002 0.005772 0.017213 0.000000
# Chi-squared of fit: 2.78 DOF: 8 RMS: 0.11
# Min/Max residuals: -0.21 0.21
# Exact a, adot, b, bdot, g, gdot:
1.066524E-05 1.132276E-02 6.334420E-06 5.753333E-03 1.707066E-02 -5.693356E-03
# Covariance matrix:
9.2209E-13 1.5686E-11 -1.0029E-14 8.7443E-12 2.3886E-11 1.4319E-09
1.5686E-11 1.4281E-09 -8.7834E-13 7.6097E-10 2.0851E-09 1.2459E-07
-1.0029E-14 -8.7834E-13 7.3427E-13 -1.1593E-12 -1.2891E-12 -7.6397E-11
8.7443E-12 7.6097E-10 -1.1593E-12 4.0698E-10 1.1106E-09 6.6490E-08
2.3886E-11 2.0851E-09 -1.2891E-12 1.1106E-09 3.0515E-09 1.8178E-07
1.4319E-09 1.2459E-07 -7.6397E-11 6.6490E-08 1.8178E-07 1.0888E-05
# lat0 lon0 xBary yBary zBary JD0
7.952970 -37.574482 -0.272152 0.133004 -0.953546 2459823.591031
# Heliocentric elements and errors
Epoch: 2459820.5000 = 2022/08/29
Mean Anomaly: 294.75483 +/- 27.372
Argument of Peri: 129.68399 +/- 12.437
Long of Asc Node: 307.55836 +/- 0.042
Inclination: 27.75476 +/- 0.062
Eccentricity: 0.40701111 +/- 0.2021
Semi-Major Axis: 60.16132434 +/- 12.3246
Time of Perihelion: 2490710.6737 +/- 8822.5
Perihelion: 35.67499668 +/- 14.1851
Aphelion: 84.64765199 +/- 21.1780
Period (y) 466.6425 +/- 143.39
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 46.92017243 +/- 0.1488
Ecliptic Y -35.75016175 +/- 0.1145
Ecliptic Z 8.10552333 +/- 0.0262
Ecliptic XDOT 0.00028999 +/- 0.0004
Ecliptic YDOT 0.00207768 +/- 0.0003
Ecliptic ZDOT 0.00078744 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 59.54222161 +/- 0.1360
Geocenter to KBO 58.58005664 +/- 0.1896
# Hcoef: 6.96
The following table shows the complete astrometric record for 22RW88. 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 (22RW88) followed by the observatory code and reference code for the source of the astrometry.
2022 09 01.09023 21 28 45.066 -06 30 17.07 24.8r 22RW88 807 C~7BoF 2022 09 02.08727 21 28 41.815 -06 30 32.01 24.7r 22RW88 807 C~7BoF 2023 09 14.06353 21 30 09.644 -06 02 15.56 24.8r 22RW88 304 C~7BoF 2023 09 14.11519 21 30 09.511 -06 02 16.38 24.6r 22RW88 304 C~7BoF 2023 09 15.06055 21 30 06.743 -06 02 31.08 24.5r 22RW88 304 C~7BoF 2023 10 06.11037 21 29 14.777 -06 07 42.82 24.4r 22RW88 304 C~7BoF 2023 10 07.05545 21 29 12.955 -06 07 55.56 24.5r 22RW88 304 C~7BoF
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 -0.04 0.00 -0.21
2 0.0027 -50.69 0.04 1.21 0.21
3 1.0348 1729.92 -0.19 1193.92 0.03
4 1.0350 1727.78 0.12 1193.78 -0.08
5 1.0376 1683.96 0.08 1192.96 0.09
6 1.0952 849.93 -0.06 1143.63 0.04
7 1.0978 820.12 0.06 1140.18 -0.07
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.
22RW88 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