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: 19GU184
# Created Mon Apr 28 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 21 observations of 21
# Arc: 1.14y
# First observation: 2018/02/11
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000057 0.024733 -0.000001 0.000433 0.024588 0.000000
# Chi-squared of fit: 11.17 DOF: 36 RMS: 0.13
# Min/Max residuals: -0.40 0.21
# Exact a, adot, b, bdot, g, gdot:
1.586624E-05 2.469454E-02 3.904576E-07 4.306052E-04 2.463510E-02 1.467698E-03
# Covariance matrix:
1.4576E-12 5.7948E-13 -9.3574E-15 5.1315E-14 1.6792E-12 8.2494E-11
5.7948E-13 2.4056E-12 -1.5107E-14 8.3242E-14 2.3053E-12 1.2984E-10
-9.3574E-15 -1.5107E-14 6.0905E-13 -5.6843E-13 -1.8853E-14 -1.0848E-12
5.1315E-14 8.3242E-14 -5.6843E-13 6.0163E-13 1.0344E-13 5.9775E-12
1.6792E-12 2.3053E-12 -1.8853E-14 1.0344E-13 3.3273E-12 1.6575E-10
8.2494E-11 1.2984E-10 -1.0848E-12 5.9775E-12 1.6575E-10 9.3256E-09
# lat0 lon0 xBary yBary zBary JD0
3.044748 179.959736 0.605077 0.041715 -0.782096 2458161.155206
# Heliocentric elements and errors
Epoch: 2458160.5000 = 2018/02/11
Mean Anomaly: 32.55398 +/- 2.088
Argument of Peri: 33.20111 +/- 2.529
Long of Asc Node: 108.45500 +/- 0.031
Inclination: 3.16471 +/- 0.001
Eccentricity: 0.07405575 +/- 0.0025
Semi-Major Axis: 44.05323037 +/- 0.0153
Time of Perihelion: 2448502.9567 +/- 619.5
Perihelion: 40.79083531 +/- 0.1121
Aphelion: 47.31562543 +/- 0.1124
Period (y) 292.3983 +/- 0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.31951316 +/- 0.0030
Ecliptic Y 0.62713544 +/- 0.0001
Ecliptic Z 2.15612082 +/- 0.0002
Ecliptic XDOT -0.00015613 +/- 0.0000
Ecliptic YDOT -0.00274906 +/- 0.0000
Ecliptic ZDOT 0.00005630 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.38048240 +/- 0.0030
Geocenter to KBO 40.59249092 +/- 0.0030
# Hcoef: 8.58
The following table shows the complete astrometric record for 19GU184. 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 (19GU184) followed by the observatory code and reference code for the source of the astrometry.
2018 02 11.654405 12 04 42.04 +02 48 33.5 19GU184 T09 C~870j 2018 04 24.365505 11 59 42.93 +03 21 29.2 19GU184 T09 C~870j 2018 04 24.409486 11 59 42.76 +03 21 30.2 19GU184 T09 C~870j 2019 02 05.53446 12 10 15.47 +02 13 34.7 24.0i 19GU184 T09 C~83GF 2019 02 05.58442 12 10 15.34 +02 13 35.8 24.2i 19GU184 T09 C~83GF 2019 02 05.62497 12 10 15.21 +02 13 37.0 23.8i 19GU184 T09 C~83GF 2019 02 05.66520 12 10 15.10 +02 13 37.7 23.7i 19GU184 T09 C~83GF 2019 02 28.557380 12 08 54.43 +02 23 33.6 19GU184 T09 C~870j 2019 02 28.607902 12 08 54.23 +02 23 34.7 19GU184 T09 C~870j 2019 03 03.619719 12 08 41.73 +02 25 02.6 19GU184 T09 C~870j 2019 03 03.622400 12 08 41.73 +02 25 02.7 19GU184 T09 C~870j 2019 04 04.44671 12 06 20.27 +02 40 40.2 25.5g 19GU184 T09 C~83GF 2019 04 04.45724 12 06 20.24 +02 40 40.4 25.6g 19GU184 T09 C~83GF 2019 04 04.48040 12 06 20.13 +02 40 40.7 25.4g 19GU184 T09 C~83GF 2019 04 04.49094 12 06 20.08 +02 40 41.2 25.7g 19GU184 T09 C~83GF 2019 04 04.50980 12 06 20.00 +02 40 41.7 25.5g 19GU184 T09 C~83GF 2019 04 04.51189 12 06 19.96 +02 40 42.1 26.0g 19GU184 T09 C~83GF 2019 04 05.52031 12 06 15.55 +02 41 09.8 24.6r 19GU184 T09 C~83GF 2019 04 05.54335 12 06 15.45 +02 41 10.3 24.4r 19GU184 T09 C~83GF 2019 04 05.55382 12 06 15.40 +02 41 10.8 24.6r 19GU184 T09 C~83GF 2019 04 05.57268 12 06 15.33 +02 41 11.1 24.5r 19GU184 T09 C~83GF
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 -0.00 0.00 -0.02
2 0.1963 -4897.25 0.07 30.80 0.01
3 0.1965 -4899.99 -0.07 30.71 0.04
4 0.9826 5420.32 -0.05 67.76 -0.12
5 0.9827 5418.10 0.17 67.99 -0.04
6 0.9828 5415.83 -0.12 68.32 0.16
7 0.9829 5414.04 0.06 68.30 0.02
8 1.0456 4066.89 -0.20 132.12 -0.05
9 1.0457 4063.70 0.09 131.93 -0.31
10 1.0540 3856.78 -0.06 137.78 -0.02
11 1.0540 3856.74 0.09 137.87 0.07
12 1.1411 1538.51 -0.11 152.26 0.12
13 1.1411 1538.01 0.16 152.26 0.14
14 1.1412 1536.38 0.21 151.88 -0.21
15 1.1412 1535.50 0.09 152.04 -0.03
16 1.1413 1534.20 0.16 152.02 -0.03
17 1.1413 1533.49 -0.40 152.15 0.10
18 1.1441 1461.84 -0.08 151.22 0.07
19 1.1441 1460.27 -0.00 151.08 -0.04
20 1.1441 1459.38 -0.13 151.24 0.13
21 1.1442 1458.30 0.14 151.10 0.01
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.
19GU184 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.736 43.818 43.663 ecceobj 0.071 0.079 0.063 incobj 3.164 3.164 3.163 qmin 39.632 39.323 39.836 qmax 48.405 48.896 47.997 amean 43.890 43.970 43.819 amin 43.541 43.615 43.457 amax 44.255 44.353 44.188 emean 0.076 0.085 0.068 emin 0.058 0.068 0.050 emax 0.094 0.103 0.087 imean 1.769 1.796 1.724 imin 0.970 0.973 0.913 imax 2.461 2.479 2.447 excite_mean 0.083 0.091 0.075 fracstop 1.000 1.000 1.000 cjmean 3.092 3.091 3.092 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 181.3 179.7 185.1 kozaiamp 180.0 179.9 180.0