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: 16PU298
# Created Wed Nov 27 02:10:40 2024
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 23
# Arc: 28.98d
# First observation: 2016/07/03
# Last observation: 2016/08/01
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.055108 -0.000001 -0.003185 0.037978 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 8.14 DOF: 41 RMS: 0.11
# Min/Max residuals: -0.31 0.22
# Exact a, adot, b, bdot, g, gdot:
2.265699E-05 5.286389E-02 -1.315548E-06 -3.057694E-03 3.698691E-02 -2.401956E-03
# Covariance matrix:
2.7306E-13 -3.6515E-11 2.4491E-15 2.0424E-12 -9.4076E-12 3.2145E-10
-3.6515E-11 6.8441E-08 -2.6771E-11 -3.9069E-09 2.8235E-08 4.8997E-06
2.4491E-15 -2.6771E-11 1.5137E-13 -8.6082E-13 -1.1497E-11 -2.1787E-09
2.0424E-12 -3.9069E-09 -8.6082E-13 2.9720E-10 -1.6098E-09 -2.7781E-07
-9.4076E-12 2.8235E-08 -1.1497E-11 -1.6098E-09 1.1850E-08 2.1353E-06
3.2145E-10 4.8997E-06 -2.1787E-09 -2.7781E-07 2.1353E-06 4.1709E-04
# lat0 lon0 xBary yBary zBary JD0
2.267364 -7.066683 0.958865 0.013261 -0.332312 2457573.074099
# Heliocentric elements and errors
Epoch: 2457570.5000 = 2016/07/01
Mean Anomaly: 354.34202 +/- 25.773
Argument of Peri: 160.78310 +/- 72.481
Long of Asc Node: 205.46853 +/- 0.464
Inclination: 3.94345 +/- 0.047
Eccentricity: 0.42581889 +/- 0.1068
Semi-Major Axis: 47.17848393 +/- 4.0643
Time of Perihelion: 2459430.7580 +/- 8470.3
Perihelion: 27.08899422 +/- 5.5524
Aphelion: 67.26797364 +/- 7.6788
Period (y) 324.0591 +/- 41.87
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 27.01864776 +/- 0.0789
Ecliptic Y -4.31813538 +/- 0.0098
Ecliptic Z 1.06966250 +/- 0.0032
Ecliptic XDOT 0.00031496 +/- 0.0015
Ecliptic YDOT 0.00389712 +/- 0.0002
Ecliptic ZDOT -0.00023321 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 27.38243594 +/- 0.0779
Geocenter to KBO 27.03659178 +/- 0.0796
# Hcoef: 8.94
The following table shows the complete astrometric record for 16PU298. 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 (16PU298) followed by the observatory code and reference code for the source of the astrometry.
2016 07 03.57331 23 30 27.66 -00 43 19.0 23.5r 16PU298 T09 C~89Tz 2016 07 03.58369 23 30 27.65 -00 43 19.0 23.6r 16PU298 T09 C~89Tz 2016 07 03.59409 23 30 27.64 -00 43 19.0 23.6r 16PU298 T09 C~89Tz 2016 07 03.60455 23 30 27.63 -00 43 19.0 23.4r 16PU298 T09 C~89Tz 2016 07 07.53078 23 30 23.45 -00 43 33.0 24.7g 16PU298 T09 C~89Tz 2016 07 07.55077 23 30 23.43 -00 43 33.1 24.3g 16PU298 T09 C~89Tz 2016 07 07.56088 23 30 23.42 -00 43 33.1 24.4g 16PU298 T09 C~89Tz 2016 07 09.54573 23 30 20.55 -00 43 45.1 22.9y 16PU298 T09 C~89Tz 2016 07 09.55995 23 30 20.51 -00 43 45.4 23.2y 16PU298 T09 C~89Tz 2016 07 09.57417 23 30 20.50 -00 43 45.4 23.1y 16PU298 T09 C~89Tz 2016 07 09.58875 23 30 20.49 -00 43 45.6 23.1y 16PU298 T09 C~89Tz 2016 07 12.53976 23 30 15.32 -00 44 09.4 22.8z 16PU298 T09 C~89Tz 2016 07 12.55404 23 30 15.30 -00 44 09.6 22.9z 16PU298 T09 C~89Tz 2016 07 12.56833 23 30 15.26 -00 44 09.6 22.8z 16PU298 T09 C~89Tz 2016 07 12.58266 23 30 15.23 -00 44 09.6 23.1z 16PU298 T09 C~89Tz 2016 07 12.59705 23 30 15.21 -00 44 09.9 22.9z 16PU298 T09 C~89Tz 2016 07 29.54752 23 29 26.06 -00 48 41.5 22.8z 16PU298 T09 C~89Tz 2016 07 29.56202 23 29 25.99 -00 48 41.7 23.1z 16PU298 T09 C~89Tz 2016 07 29.57647 23 29 25.94 -00 48 42.1 23.0z 16PU298 T09 C~89Tz 2016 07 29.59087 23 29 25.89 -00 48 42.4 23.1z 16PU298 T09 C~89Tz 2016 08 01.43913 23 29 14.63 -00 49 49.1 23.5z 16PU298 T09 C~89Tz 2016 08 01.53573 23 29 14.23 -00 49 51.8 23.0z 16PU298 T09 C~89Tz 2016 08 01.55739 23 29 14.12 -00 49 52.1 23.7z 16PU298 T09 C~89Tz
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 0.00
2 0.0000 -0.14 -0.01 0.06 0.02
3 0.0001 -0.28 -0.00 0.12 0.04
4 0.0001 -0.41 0.00 0.18 0.06
5 0.0108 -63.54 -0.03 12.07 -0.02
6 0.0109 -63.86 0.09 12.09 -0.06
7 0.0109 -64.00 0.17 12.15 -0.04
8 0.0164 -108.28 0.00 18.12 0.03
9 0.0164 -108.95 -0.30 18.08 -0.06
10 0.0164 -109.09 -0.06 18.14 -0.05
11 0.0165 -109.31 0.10 18.02 -0.23
12 0.0245 -189.95 -0.05 26.76 0.03
13 0.0246 -190.30 0.05 26.70 -0.09
14 0.0246 -190.85 -0.04 26.93 0.10
15 0.0247 -191.27 0.00 27.11 0.22
16 0.0247 -191.66 0.07 26.95 0.01
17 0.0711 -976.20 0.06 68.42 -0.01
18 0.0712 -977.24 -0.06 68.65 0.18
19 0.0712 -978.09 0.00 68.58 0.07
20 0.0712 -978.90 0.10 68.60 0.05
21 0.0790 -1160.40 0.04 73.98 0.05
22 0.0793 -1166.98 0.02 73.86 -0.31
23 0.0794 -1168.61 -0.14 74.24 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.