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: 05PS21
# Created Sun Nov 24 02:08:46 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 17.22y
# First observation: 2005/08/09
# Last observation: 2022/10/29
# Chi-squared of fit: 18.54 DOF: 34 RMS: 0.17
# Min/Max residuals: -0.28 0.56
# Exact a, adot, b, bdot, g, gdot:
1.523007E-05 2.102648E-02 -7.144615E-07 -8.112889E-04 2.267615E-02 -1.500452E-03
# Covariance matrix:
2.3795E-13 -4.4518E-14 -1.5646E-15 1.6337E-15 1.0928E-13 -1.0979E-13
-4.4518E-14 3.1982E-14 1.5242E-15 -1.2517E-15 1.1869E-14 8.3799E-14
-1.5646E-15 1.5242E-15 1.6826E-13 -1.1549E-14 8.9200E-16 4.1343E-15
1.6337E-15 -1.2517E-15 -1.1549E-14 1.4896E-15 5.1874E-16 -3.5916E-15
1.0928E-13 1.1869E-14 8.9200E-16 5.1874E-16 4.4268E-13 -3.6228E-14
-1.0979E-13 8.3799E-14 4.1343E-15 -3.5916E-15 -3.6228E-14 2.4069E-13
# lat0 lon0 xBary yBary zBary JD0
1.409829 -23.001624 0.349415 0.023594 -0.953786 2453591.736023
# Heliocentric elements and errors
Epoch: 2453592.5000 = 2005/08/10
Mean Anomaly: 262.09499 +/- 0.074
Argument of Peri: 254.73861 +/- 0.059
Long of Asc Node: 188.53199 +/- 0.001
Inclination: 2.60426 +/- 0.000
Eccentricity: 0.07924616 +/- 0.0000
Semi-Major Axis: 44.30055553 +/- 0.0050
Time of Perihelion: 2482882.1774 +/- 25.7
Perihelion: 40.78990659 +/- 0.0048
Aphelion: 47.81120447 +/- 0.0056
Period (y) 294.8641 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.31851624 +/- 0.0012
Ecliptic Y -17.92195558 +/- 0.0005
Ecliptic Z 1.08496613 +/- 0.0000
Ecliptic XDOT 0.00082910 +/- 0.0000
Ecliptic YDOT 0.00239984 +/- 0.0000
Ecliptic ZDOT -0.00010235 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.05105914 +/- 0.0011
Geocenter to KBO 44.09928597 +/- 0.0013
# Hcoef: 6.75
The following table shows the complete astrometric record for 05PS21. 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 (05PS21) followed by the observatory code and reference code for the source of the astrometry.
2005 08 09.23528 22 32 46.31 -07 37 56.0 22.2R 05PS21 807 Co4015 2005 08 10.08200 22 32 42.99 -07 38 15.5 05PS21 807 Co4015 2005 08 10.21627 22 32 42.45 -07 38 18.6 05PS21 807 Co4015 2005 11 03.14059 22 27 52.34 -08 08 30.0 23.2R 05PS21 695 Cp0721 2005 11 03.22311 22 27 52.23 -08 08 30.8 05PS21 695 Cp0721 2006 08 21.18123 22 36 34.01 -07 18 26.3 21.8R 05PS21 807 Cv1996 2006 08 21.27218 22 36 33.63 -07 18 28.7 05PS21 807 Cv1996 2007 07 11.35529 22 43 30.51 -06 40 10.8 05PS21 304 Cv1996 2007 07 11.40631 22 43 30.39 -06 40 11.4 05PS21 304 Cv1996 2009 09 18.16234 22 48 26.52 -06 16 28.1 23.4R 05PS21 688 C~09bV 2009 09 18.20630 22 48 26.34 -06 16 29.1 05PS21 688 C~09bV 2014 09 26.22134 23 11 08.89 -04 12 01.0 23.1R 05PS21 695 C~1LJR 2014 09 26.28346 23 11 08.63 -04 12 02.8 05PS21 695 C~1LJR 2014 09 26.34035 23 11 08.40 -04 12 03.8 05PS21 695 C~1LJR 2021 10 03.150850 23 43 37.674 -01 08 45.97 23.2G 05PS21 G37 C~555b 2021 10 03.203930 23 43 37.468 -01 08 47.68 05PS21 G37 C~555b 2021 10 03.256720 23 43 37.248 -01 08 49.08 05PS21 G37 C~555b 2022 10 29.095070 23 46 49.474 -00 52 09.04 23.6G 05PS21 G37 C~5yob 2022 10 29.133420 23 46 49.334 -00 52 09.69 05PS21 G37 C~5yob 2022 10 29.172140 23 46 49.220 -00 52 10.66 05PS21 G37 C~5yob
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 -0.12 0.00 -0.01
2 0.0023 0.00 0.06 0.00 0.05
3 0.0027 0.00 0.05 0.00 0.08
4 0.2352 0.00 0.06 0.00 -0.25
5 0.2354 0.00 0.05 0.00 -0.25
6 1.0320 0.00 0.05 0.00 -0.15
7 1.0323 0.00 0.13 0.00 -0.28
8 1.9196 0.00 -0.04 0.00 -0.07
9 1.9197 0.00 0.03 0.00 0.01
10 4.1093 0.00 -0.12 0.00 0.43
11 4.1094 0.00 -0.10 0.00 0.56
12 9.1307 0.00 -0.01 0.00 0.00
13 9.1309 0.00 -0.08 0.00 -0.15
14 9.1310 0.00 -0.03 0.00 0.35
15 16.1504 0.00 -0.20 0.00 0.09
16 16.1505 0.00 0.02 0.00 -0.17
17 16.1506 0.00 0.02 0.00 -0.12
18 17.2207 0.00 0.20 0.00 -0.11
19 17.2208 0.00 -0.07 0.00 0.06
20 17.2209 0.00 0.07 0.00 -0.08
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.
05PS21 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.665 44.665 44.665 ecceobj 0.082 0.082 0.082 incobj 2.590 2.590 2.590 qmin 39.460 39.482 39.345 qmax 50.123 50.037 50.022 amean 44.565 44.563 44.564 amin 44.148 44.157 44.133 amax 44.983 44.973 44.974 emean 0.094 0.094 0.094 emin 0.073 0.073 0.073 emax 0.114 0.113 0.114 imean 3.282 3.269 3.277 imin 2.578 2.579 2.574 imax 4.026 4.024 4.024 excite_mean 0.110 0.110 0.110 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 178.5 178.5 178.2 kozaiamp 180.0 179.9 180.0