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: 19GK185 # Created Mon Apr 28 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 3.88y # First observation: 2016/03/02 # Last observation: 2020/01/19 Preliminary a, adot, b, bdot, g, gdot: 0.000053 0.021514 -0.000002 0.002090 0.023456 0.000000 # Chi-squared of fit: 5.38 DOF: 30 RMS: 0.10 # Min/Max residuals: -0.25 0.15 # Exact a, adot, b, bdot, g, gdot: 1.469066E-05 2.160608E-02 1.395413E-06 2.111640E-03 2.320523E-02 -9.441589E-04 # Covariance matrix: 1.4654E-12 -8.0718E-13 1.2754E-14 -3.7890E-14 -3.8296E-13 -4.9402E-12 -8.0718E-13 1.6329E-12 -4.8672E-14 1.3858E-13 1.7810E-12 1.8641E-11 1.2754E-14 -4.8672E-14 1.3292E-12 -4.1549E-13 -5.8232E-14 -6.0597E-13 -3.7890E-14 1.3858E-13 -4.1549E-13 1.4853E-13 1.6158E-13 1.7257E-12 -3.8296E-13 1.7810E-12 -5.8232E-14 1.6158E-13 2.3546E-12 2.2154E-11 -4.9402E-12 1.8641E-11 -6.0597E-13 1.7257E-12 2.2154E-11 2.3210E-10 # lat0 lon0 xBary yBary zBary JD0 -5.897484 154.146100 -0.128287 -0.100476 -0.974650 2457449.657877 # Heliocentric elements and errors Epoch: 2457440.5000 = 2016/02/22 Mean Anomaly: 250.91268 +/- 0.481 Argument of Peri: 67.70356 +/- 0.459 Long of Asc Node: 200.09761 +/- 0.005 Inclination: 8.02049 +/- 0.001 Eccentricity: 0.04430383 +/- 0.0006 Semi-Major Axis: 43.36958081 +/- 0.0092 Time of Perihelion: 2489052.2120 +/- 139.0 Perihelion: 41.44814222 +/- 0.0276 Aphelion: 45.29101940 +/- 0.0279 Period (y) 285.6183 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.51691756 +/- 0.0026 Ecliptic Y 19.00219478 +/- 0.0012 Ecliptic Z -4.42780923 +/- 0.0003 Ecliptic XDOT -0.00103515 +/- 0.0000 Ecliptic YDOT -0.00233816 +/- 0.0000 Ecliptic ZDOT 0.00025928 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.07125678 +/- 0.0024 Geocenter to KBO 43.09372884 +/- 0.0028 # Hcoef: 7.20
The following table shows the complete astrometric record for 19GK185. 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 (19GK185) followed by the observatory code and reference code for the source of the astrometry.
2016 03 02.157088 10 15 32.04 +04 29 21.6 23.6r 19GK185 W84 C~85KE 2019 01 02.298293 10 33 40.04 +03 09 19.4 23.8g 19GK185 W84 C~85KE 2019 04 06.285880 10 27 46.40 +03 44 30.8 23.1i 19GK185 T09 C~85KE 2019 04 07.31764 10 27 43.18 +03 44 56.5 24.6g 19GK185 T09 C~85KE 2019 04 07.34315 10 27 43.10 +03 44 57.2 24.8g 19GK185 T09 C~85KE 2019 04 07.34524 10 27 43.09 +03 44 57.3 24.7g 19GK185 T09 C~85KE 2019 04 07.36664 10 27 43.02 +03 44 57.7 24.6g 19GK185 T09 C~85KE 2019 04 08.25500 10 27 40.32 +03 45 19.7 23.8y 19GK185 T09 C~85KE 2019 04 08.28056 10 27 40.25 +03 45 20.4 23.8y 19GK185 T09 C~85KE 2019 04 08.31368 10 27 40.16 +03 45 21.0 23.8y 19GK185 T09 C~85KE 2019 04 08.34415 10 27 40.06 +03 45 21.7 24.4y 19GK185 T09 C~85KE 2019 05 08.343994 10 26 41.28 +03 55 10.2 22.9i 19GK185 T09 C~85KE 2019 05 09.398121 10 26 40.47 +03 55 24.4 23.2i 19GK185 T09 C~85KE 2019 05 31.294612 10 26 44.78 +03 58 21.9 19GK185 T09 C~85KE 2019 06 08.297250 10 26 56.32 +03 58 27.7 22.6z 19GK185 T09 C~85KE 2019 06 08.326765 10 26 56.36 +03 58 27.7 22.6z 19GK185 T09 C~85KE 2019 12 31.633060 10 38 30.05 +02 48 52.5 23.0z 19GK185 T09 C~85KE 2020 01 19.414345 10 37 41.52 +02 52 10.0 22.7z 19GK185 T09 C~85KE
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 0.01 0.00 0.01
2 2.8368 16956.14 0.09 1415.26 -0.04
3 3.0941 11228.80 0.14 1457.28 0.08
4 3.0969 11174.40 -0.07 1463.75 -0.03
5 3.0970 11173.03 -0.08 1463.97 0.04
6 3.0970 11172.85 -0.15 1464.01 0.06
7 3.0971 11171.73 -0.14 1464.00 -0.07
8 3.0995 11125.95 -0.25 1469.85 -0.04
9 3.0996 11124.72 -0.15 1470.12 0.08
10 3.0997 11123.24 0.10 1470.19 -0.05
11 3.0998 11121.59 0.04 1470.30 -0.13
12 3.1819 10085.65 0.12 1699.98 0.06
13 3.1848 10069.17 0.06 1708.83 -0.01
14 3.2447 10064.98 0.15 1897.87 0.04
15 3.2666 10224.23 0.15 1966.00 0.00
16 3.2667 10224.79 -0.01 1966.21 -0.02
17 3.8316 21488.21 0.12 1859.93 0.09
18 3.8830 20731.31 -0.13 1777.71 -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.
19GK185 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.097 43.119 43.074 ecceobj 0.044 0.045 0.043 incobj 8.047 8.047 8.047 qmin 40.631 40.571 40.656 qmax 45.894 45.974 45.819 amean 43.161 43.185 43.138 amin 42.833 42.853 42.812 amax 43.508 43.526 43.475 emean 0.042 0.043 0.041 emin 0.028 0.029 0.027 emax 0.055 0.056 0.054 imean 8.880 8.875 8.886 imin 8.225 8.220 8.226 imax 9.575 9.573 9.583 excite_mean 0.160 0.160 0.160 fracstop 1.000 1.000 1.000 cjmean 3.061 3.061 3.061 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 178.3 178.4 178.0 kozaiamp 180.0 180.0 179.9