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: 20KK60
# Created Mon Apr 28 01:11:22 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 76.97d
# First observation: 2020/05/29
# Last observation: 2020/08/14
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.023955 0.000008 0.001776 0.026351 0.000000
# Chi-squared of fit: 9.34 DOF: 24 RMS: 0.14
# Min/Max residuals: -0.18 0.49
# Exact a, adot, b, bdot, g, gdot:
1.902799E-05 3.433739E-02 1.630312E-08 1.784267E-03 2.816298E-02 8.073292E-03
# Covariance matrix:
3.3453E-13 2.2458E-11 -2.4743E-14 1.2995E-13 5.3788E-12 2.6394E-10
2.2458E-11 1.4057E-07 -1.1738E-10 2.1441E-10 2.5876E-08 3.3372E-07
-2.4743E-14 -1.1738E-10 3.1058E-13 -1.4217E-12 -2.1653E-11 -2.8740E-10
1.2995E-13 2.1441E-10 -1.4217E-12 1.3777E-11 4.0281E-11 6.7391E-10
5.3788E-12 2.5876E-08 -2.1653E-11 4.0281E-11 4.7727E-09 6.3225E-08
2.6394E-10 3.3372E-07 -2.8740E-10 6.7391E-10 6.3225E-08 1.1573E-06
# lat0 lon0 xBary yBary zBary JD0
2.977179 -73.373097 0.632145 0.040722 -0.785446 2458998.947791
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 11.72659 +/- 1.317
Argument of Peri: 6.40988 +/- 2.727
Long of Asc Node: 241.69780 +/- 0.298
Inclination: 4.19257 +/- 0.023
Eccentricity: 0.49080620 +/- 0.0419
Semi-Major Axis: 66.42579940 +/- 4.4137
Time of Perihelion: 2452549.2102 +/- 333.3
Perihelion: 33.82360545 +/- 3.5792
Aphelion: 99.02799334 +/- 7.1453
Period (y) 541.3939 +/- 53.96
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 9.77138128 +/- 0.0249
Ecliptic Y -34.91838463 +/- 0.0833
Ecliptic Z 1.84427171 +/- 0.0045
Ecliptic XDOT 0.00342833 +/- 0.0001
Ecliptic YDOT 0.00021633 +/- 0.0001
Ecliptic ZDOT 0.00021375 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.30667729 +/- 0.0804
Geocenter to KBO 35.50760179 +/- 0.0871
# Hcoef: 7.86
The following table shows the complete astrometric record for 20KK60. 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 (20KK60) followed by the observatory code and reference code for the source of the astrometry.
2020 05 29.44699 19 10 33.749 -19 26 58.80 24.2r 20KK60 266 C~6wsS 2020 05 29.57710 19 10 33.199 -19 26 59.24 24.2r 20KK60 266 C~6wsS 2020 05 31.44139 19 10 25.515 -19 27 04.91 22.9r 20KK60 266 C~7ulo 2020 05 31.52961 19 10 25.136 -19 27 05.20 22.9r 20KK60 266 C~7ulo 2020 05 31.61814 19 10 24.755 -19 27 05.46 22.9r 20KK60 266 C~7ulo 2020 06 21.45392 19 08 44.235 -19 28 46.95 24.3r 20KK60 266 C~6wsS 2020 06 21.54077 19 08 43.767 -19 28 47.24 24.3r 20KK60 266 C~6wsS 2020 06 24.43648 19 08 28.241 -19 29 06.51 22.8r 20KK60 266 C~7ulo 2020 06 24.52599 19 08 27.748 -19 29 07.11 22.8r 20KK60 266 C~7ulo 2020 06 24.61708 19 08 27.248 -19 29 07.71 22.8r 20KK60 266 C~7ulp 2020 08 12.32314 19 04 12.377 -19 35 56.57 24.2r 20KK60 266 C~6wsS 2020 08 12.40995 19 04 12.026 -19 35 57.90 24.2r 20KK60 266 C~6wsS 2020 08 14.24286 19 04 04.321 -19 36 13.64 22.8r 20KK60 266 C~7ulp 2020 08 14.33285 19 04 03.941 -19 36 14.42 22.8r 20KK60 266 C~7ulp 2020 08 14.42134 19 04 03.567 -19 36 15.16 22.8r 20KK60 266 C~7ulp
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 0.05 0.00 0.20
2 0.0004 -7.78 -0.08 0.50 0.15
3 0.0055 -116.35 -0.00 7.98 -0.10
4 0.0057 -121.70 0.00 8.34 -0.11
5 0.0059 -127.09 0.01 8.73 -0.10
6 0.0630 -1550.69 0.14 77.54 -0.18
7 0.0632 -1557.29 0.20 78.03 0.08
8 0.0712 -1777.60 -0.10 84.78 0.01
9 0.0714 -1784.60 -0.11 85.00 0.01
10 0.0716 -1791.69 -0.11 85.24 0.01
11 0.2050 -5418.84 -0.13 91.92 0.49
12 0.2052 -5423.92 0.20 91.15 -0.14
13 0.2103 -5533.95 -0.03 87.64 -0.10
14 0.2105 -5539.38 -0.02 87.46 -0.10
15 0.2107 -5544.72 -0.02 87.31 -0.10
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.
20KK60 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