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: 22LD16
# Created Tue May 7 01:18:09 2024
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 27.14d
# First observation: 2022/06/03
# Last observation: 2022/06/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.026332 -0.000000 -0.000968 0.024724 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 0.10 DOF: 13 RMS: 0.02
# Min/Max residuals: -0.03 0.03
# Exact a, adot, b, bdot, g, gdot:
1.534711E-05 2.355137E-02 -6.448759E-07 -9.574006E-04 2.415090E-02 3.868266E-04
# Covariance matrix:
2.4733E-11 3.7425E-08 -1.0125E-13 -1.1870E-10 7.0708E-09 3.3531E-07
3.7425E-08 5.7801E-05 -1.5614E-10 -1.8289E-07 1.0910E-05 5.1151E-04
-1.0125E-13 -1.5614E-10 4.8413E-13 -6.1878E-12 -2.9562E-11 -1.4455E-09
-1.1870E-10 -1.8289E-07 -6.1878E-12 7.2547E-10 -3.4691E-08 -1.7370E-06
7.0708E-09 1.0910E-05 -2.9562E-11 -3.4691E-08 2.0630E-06 9.9193E-05
3.3531E-07 5.1151E-04 -1.4455E-09 -1.7370E-06 9.9193E-05 6.3543E-03
# lat0 lon0 xBary yBary zBary JD0
0.361862 -72.502019 0.589056 0.004953 -0.826779 2459733.941661
# Heliocentric elements and errors
Epoch: 2459730.5000 = 2022/05/31
Mean Anomaly: 359.11252 +/- 28.750
Argument of Peri: 172.22053 +/- 60.422
Long of Asc Node: 115.39946 +/- 2.915
Inclination: 2.34714 +/- 0.795
Eccentricity: 0.02276132 +/- 0.5108
Semi-Major Axis: 43.22545421 +/- 22.1064
Time of Perihelion: 2459986.3955 +/- 2395746.9
Perihelion: 42.24158599 +/- 30.8902
Aphelion: 44.20932243 +/- 31.6022
Period (y) 284.1957 +/- 218.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 12.14585890 +/- 0.7402
Ecliptic Y -40.45703213 +/- 2.3486
Ecliptic Z 0.26155686 +/- 0.0156
Ecliptic XDOT 0.00256146 +/- 0.0033
Ecliptic YDOT 0.00076929 +/- 0.0084
Ecliptic ZDOT -0.00010837 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 42.24170628 +/- 2.2594
Geocenter to KBO 41.40632061 +/- 2.4625
# Hcoef: 9.55
The following table shows the complete astrometric record for 22LD16. 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 (22LD16) followed by the observatory code and reference code for the source of the astrometry.
2022 06 03.44086 19 15 39.128 -21 56 09.22 25.8r 22LD16 266 C~6Ipb 2022 06 03.52767 19 15 38.776 -21 56 09.88 25.8r 22LD16 266 C~6Ipb 2022 06 03.61505 19 15 38.421 -21 56 10.52 25.8r 22LD16 266 C~6Ipb 2022 06 29.45230 19 13 40.395 -21 59 50.14 25.8r 22LD16 266 C~6Ipb 2022 06 29.51813 19 13 40.061 -21 59 50.75 25.8r 22LD16 266 C~6Ipb 2022 06 29.58257 19 13 39.735 -21 59 51.33 25.8r 22LD16 266 C~6Ipb 2022 06 30.45132 19 13 35.397 -21 59 59.35 25.5r 22LD16 266 C~6Ipb 2022 06 30.51752 19 13 35.060 -21 59 59.95 25.5r 22LD16 266 C~6Ipb 2022 06 30.58389 19 13 34.723 -22 00 00.55 25.5r 22LD16 266 C~6Ipb
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 0.02 0.00 0.00
2 0.0002 -4.94 -0.00 -0.02 0.00
3 0.0005 -9.92 -0.02 -0.02 -0.00
4 0.0712 -1666.42 -0.01 -8.80 -0.02
5 0.0714 -1671.11 0.00 -8.83 -0.03
6 0.0716 -1675.68 0.01 -8.83 -0.03
7 0.0740 -1736.54 -0.01 -9.21 0.02
8 0.0741 -1741.27 -0.00 -9.21 0.03
9 0.0743 -1745.99 0.01 -9.22 0.03
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.
22LD16 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