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: 20KY53
# Created Tue May 7 01:17:45 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 1.17y
# First observation: 2020/05/30
# Last observation: 2021/07/30
Preliminary a, adot, b, bdot, g, gdot:
0.000022 0.043021 0.000005 -0.003266 0.034316 0.000000
# Chi-squared of fit: 9.15 DOF: 56 RMS: 0.10
# Min/Max residuals: -0.26 0.30
# Exact a, adot, b, bdot, g, gdot:
1.981998E-05 4.232362E-02 -1.528025E-06 -3.190793E-03 3.398781E-02 -1.683196E-02
# Covariance matrix:
1.6260E-13 2.8486E-13 1.9829E-15 -3.9018E-14 2.8366E-13 1.0632E-11
2.8486E-13 3.2928E-12 1.9732E-14 -3.3871E-13 1.6916E-12 9.2233E-11
1.9829E-15 1.9732E-14 8.2107E-14 -8.7532E-14 9.9551E-15 5.9380E-13
-3.9018E-14 -3.3871E-13 -8.7532E-14 2.4191E-13 -1.8200E-13 -1.0135E-11
2.8366E-13 1.6916E-12 9.9551E-15 -1.8200E-13 1.1071E-12 4.9574E-11
1.0632E-11 9.2233E-11 5.9380E-13 -1.0135E-11 4.9574E-11 2.7597E-09
# lat0 lon0 xBary yBary zBary JD0
1.927279 -71.703364 0.641924 0.026057 -0.778156 2458999.940151
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 337.78726 +/- 0.066
Argument of Peri: 226.60358 +/- 0.062
Long of Asc Node: 130.51657 +/- 0.003
Inclination: 4.71046 +/- 0.001
Eccentricity: 0.52716751 +/- 0.0014
Semi-Major Axis: 49.35034822 +/- 0.0972
Time of Perihelion: 2466803.7808 +/- 2.0
Perihelion: 23.33444786 +/- 0.0815
Aphelion: 75.36624858 +/- 0.1630
Period (y) 346.6918 +/- 1.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 8.87206876 +/- 0.0003
Ecliptic Y -28.86663737 +/- 0.0009
Ecliptic Z 0.98952792 +/- 0.0000
Ecliptic XDOT 0.00282238 +/- 0.0000
Ecliptic YDOT 0.00235227 +/- 0.0000
Ecliptic ZDOT -0.00030272 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 30.21548481 +/- 0.0008
Geocenter to KBO 29.42231729 +/- 0.0009
# Hcoef: 10.41
The following table shows the complete astrometric record for 20KY53. 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 (20KY53) followed by the observatory code and reference code for the source of the astrometry.
2020 05 30.43935 19 18 10.011 -20 16 45.66 25.1r 20KY53 266 C~6c5Y 2020 05 30.53044 19 18 09.565 -20 16 46.43 25.1r 20KY53 266 C~6c5Y 2020 05 30.61862 19 18 09.132 -20 16 47.16 25.1r 20KY53 266 C~6c5Y 2020 06 01.43269 19 18 00.320 -20 17 02.63 25.6r 20KY53 266 C~6c5Y 2020 06 01.47325 19 18 00.114 -20 17 03.00 25.6r 20KY53 266 C~6c5Y 2020 06 01.60571 19 17 59.441 -20 17 04.15 25.6r 20KY53 266 C~6c5Y 2020 06 20.45583 19 16 12.287 -20 20 22.46 25.0r 20KY53 266 C~6c5Y 2020 06 20.52860 19 16 11.821 -20 20 23.34 25.0r 20KY53 266 C~6c5Y 2020 06 20.62233 19 16 11.222 -20 20 24.44 25.0r 20KY53 266 C~6c5Y 2020 06 22.44948 19 15 59.681 -20 20 46.85 25.2r 20KY53 266 C~6c5Y 2020 06 22.52092 19 15 59.217 -20 20 47.73 25.2r 20KY53 266 C~6c5Y 2020 06 22.59118 19 15 58.761 -20 20 48.58 25.2r 20KY53 266 C~6c5Y 2020 06 25.44823 19 15 40.398 -20 21 24.46 24.9r 20KY53 266 C~6c5Y 2020 06 25.53072 19 15 39.852 -20 21 25.51 24.9r 20KY53 266 C~6c5Y 2020 06 25.61487 19 15 39.298 -20 21 26.55 24.9r 20KY53 266 C~6c5Y 2020 08 13.24332 19 10 30.542 -20 32 35.24 25.2r 20KY53 266 C~6c5Y 2020 08 13.33331 19 10 30.061 -20 32 36.43 25.2r 20KY53 266 C~6c5Y 2020 08 13.42301 19 10 29.581 -20 32 37.58 25.2r 20KY53 266 C~6c5Y 2020 08 15.24331 19 10 20.239 -20 33 01.05 25.0r 20KY53 266 C~6c5Y 2020 08 15.33985 19 10 19.739 -20 33 02.29 25.0r 20KY53 266 C~6c5Y 2020 08 15.42111 19 10 19.319 -20 33 03.32 25.0r 20KY53 266 C~6c5Y 2021 05 31.717507 19 28 38.218 -20 07 02.36 20KY53 250 S~7Bjx 2021 05 31.724047 19 28 38.178 -20 07 02.50 20KY53 250 S~7Bjx 2021 05 31.730586 19 28 38.134 -20 07 02.53 20KY53 250 S~7Bjx 2021 05 31.737126 19 28 38.091 -20 07 02.53 20KY53 250 S~7Bjx 2021 05 31.743665 19 28 38.054 -20 07 02.43 20KY53 250 S~7Bjx 2021 07 30.488817 19 22 24.384 -20 21 06.74 20KY53 250 S~7Bjx 2021 07 30.495137 19 22 24.333 -20 21 06.84 20KY53 250 S~7Bjx 2021 07 30.501456 19 22 24.280 -20 21 06.85 20KY53 250 S~7Bjx 2021 07 30.507776 19 22 24.232 -20 21 06.84 20KY53 250 S~7Bjx 2021 07 30.514095 19 22 24.188 -20 21 06.81 20KY53 250 S~7Bjx
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 -0.03 0.00 0.01
2 0.0002 -6.32 -0.03 0.07 0.01
3 0.0005 -12.46 -0.04 0.16 0.01
4 0.0055 -137.40 0.02 1.32 -0.05
5 0.0056 -140.32 0.01 1.34 -0.06
6 0.0059 -149.86 0.02 1.45 -0.05
7 0.0575 -1670.24 0.00 3.12 0.01
8 0.0577 -1676.86 0.00 3.10 0.01
9 0.0580 -1685.35 0.00 3.11 0.01
10 0.0630 -1849.22 0.02 1.99 -0.02
11 0.0632 -1855.80 0.02 1.97 -0.02
12 0.0634 -1862.27 0.02 1.96 -0.02
13 0.0712 -2123.02 -0.00 -0.15 -0.01
14 0.0714 -2130.77 -0.01 -0.20 -0.02
15 0.0717 -2138.63 0.00 -0.22 -0.02
16 0.2048 -6529.78 0.02 -119.20 0.05
17 0.2050 -6536.64 0.03 -119.56 0.05
18 0.2053 -6543.48 0.02 -119.88 0.05
19 0.2103 -6676.71 -0.03 -127.25 0.04
20 0.2105 -6683.84 -0.03 -127.63 0.04
21 0.2108 -6689.83 -0.03 -127.93 0.04
22 1.0028 8842.89 0.30 -669.47 -0.10
23 1.0028 8842.31 0.16 -669.52 -0.15
24 1.0029 8841.69 -0.02 -669.46 -0.09
25 1.0029 8841.09 -0.19 -669.37 -0.01
26 1.0029 8840.59 -0.26 -669.20 0.17
27 1.1665 3509.61 0.26 -746.46 -0.14
28 1.1665 3508.88 0.11 -746.46 -0.12
29 1.1665 3508.14 -0.05 -746.37 -0.00
30 1.1665 3507.47 -0.14 -746.26 0.12
31 1.1665 3506.87 -0.18 -746.15 0.25
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.
20KY53 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 48.564 48.718 48.414 ecceobj 0.524 0.527 0.522 incobj 4.716 4.716 4.716 qmin 22.975 22.888 23.078 qmax 74.453 77.682 74.095 amean 48.470 49.163 48.570 amin 47.756 48.154 48.414 amax 48.937 50.611 48.838 emean 0.519 0.526 0.520 emin 0.511 0.516 0.517 emax 0.527 0.535 0.523 imean 3.435 3.476 3.319 imin 3.313 3.297 3.315 imax 3.540 3.721 3.324 excite_mean 0.523 0.530 0.523 fracstop 0.001 0.004 0.001 cjmean 2.787 2.782 2.787 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 230.3 232.3 227.4 kozaiamp 3.0 5.1 0.6