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: 16GB277 # Created Thu Apr 25 01:17:58 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 1.92y # First observation: 2016/04/10 # Last observation: 2018/03/12 Preliminary a, adot, b, bdot, g, gdot: 0.000018 0.009434 0.000009 -0.005040 0.015039 0.000000 # Chi-squared of fit: 8.19 DOF: 22 RMS: 0.14 # Min/Max residuals: -0.27 0.39 # Exact a, adot, b, bdot, g, gdot: 9.798920E-06 9.350382E-03 -4.365592E-06 -4.986015E-03 1.487555E-02 -5.810253E-03 # Covariance matrix: 4.8366E-13 -1.2289E-13 3.1995E-14 -1.7836E-13 1.2511E-12 1.7903E-11 -1.2289E-13 2.0073E-12 1.1279E-13 -9.5257E-13 1.8330E-12 9.4712E-11 3.1995E-14 1.1279E-13 2.9051E-13 -2.3758E-13 2.8989E-13 8.1025E-12 -1.7836E-13 -9.5257E-13 -2.3758E-13 7.5264E-13 -1.8991E-12 -6.1125E-11 1.2511E-12 1.8330E-12 2.8989E-13 -1.8991E-12 9.0828E-12 1.8983E-10 1.7903E-11 9.4712E-11 8.1025E-12 -6.1125E-11 1.8983E-10 6.0909E-09 # lat0 lon0 xBary yBary zBary JD0 14.456842 -167.827682 -0.146011 0.246539 -0.955715 2457488.796789 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 314.07958 +/- 0.686 Argument of Peri: 255.08586 +/- 0.214 Long of Asc Node: 37.06497 +/- 0.002 Inclination: 31.22553 +/- 0.002 Eccentricity: 0.49276254 +/- 0.0064 Semi-Major Axis: 79.74353447 +/- 0.7043 Time of Perihelion: 2490658.1021 +/- 229.7 Perihelion: 40.44890808 +/- 0.6252 Aphelion: 119.03816086 +/- 1.1699 Period (y) 712.1171 +/- 9.43 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -64.57004094 +/- 0.0129 Ecliptic Y -14.07921672 +/- 0.0028 Ecliptic Z 16.78235873 +/- 0.0034 Ecliptic XDOT 0.00115133 +/- 0.0000 Ecliptic YDOT -0.00151920 +/- 0.0000 Ecliptic ZDOT -0.00115559 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 68.18476439 +/- 0.0123 Geocenter to KBO 67.22440165 +/- 0.0136 # Hcoef: 7.16
The following table shows the complete astrometric record for 16GB277. 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 (16GB277) followed by the observatory code and reference code for the source of the astrometry.
2016 04 10.29600 13 07 23.290 +08 30 05.01 25.5r 16GB277 568 C~3wqc 2016 04 10.39720 13 07 22.973 +08 30 06.48 25.2r 16GB277 568 C~3wqc 2016 04 10.54963 13 07 22.516 +08 30 08.67 25.5r 16GB277 568 C~3wqc 2016 05 03.11824 13 06 16.739 +08 34 13.86 16GB277 304 C~3wqc 2016 05 03.22953 13 06 16.427 +08 34 14.97 16GB277 304 C~3wqc 2017 04 22.21706 13 08 21.412 +08 03 57.38 25.4r 16GB277 304 C~3wqc 2017 04 23.20653 13 08 18.488 +08 04 08.25 25.3r 16GB277 304 C~3wqc 2018 03 11.22340 13 11 59.975 +07 23 37.42 16GB277 304 C~3wqc 2018 03 11.23141 13 11 59.947 +07 23 37.50 16GB277 304 C~3wqc 2018 03 11.29344 13 11 59.789 +07 23 38.97 16GB277 304 C~3wqc 2018 03 11.30141 13 11 59.766 +07 23 39.22 16GB277 304 C~3wqc 2018 03 12.20974 13 11 57.360 +07 23 56.13 25.4r 16GB277 304 C~3wqc 2018 03 12.21765 13 11 57.343 +07 23 56.56 16GB277 304 C~3wqc 2018 03 12.32833 13 11 57.052 +07 23 58.79 16GB277 304 C~3wqc
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 -0.19
2 0.0003 -4.90 -0.06 -0.50 -0.21
3 0.0007 -12.00 0.10 -1.15 -0.11
4 0.0625 -1005.61 0.05 -158.95 0.12
5 0.0628 -1010.30 -0.13 -159.75 0.39
6 1.0320 1409.95 0.08 -1101.80 0.05
7 1.0347 1365.75 -0.04 -1108.90 0.01
8 1.9163 5351.37 0.04 -2043.39 -0.09
9 1.9163 5350.96 -0.02 -2043.48 -0.19
10 1.9165 5348.22 -0.02 -2043.06 0.11
11 1.9165 5347.80 -0.08 -2042.97 0.19
12 1.9190 5308.22 0.03 -2041.59 -0.27
13 1.9190 5307.81 -0.02 -2041.30 0.02
14 1.9193 5302.95 0.05 -2040.96 0.17
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.
16GB277 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 78.564 80.628 76.673 ecceobj 0.492 0.510 0.474 incobj 31.421 31.421 31.420 qmin 39.339 38.855 39.806 qmax 121.345 126.461 116.831 amean 79.242 81.384 77.320 amin 78.159 80.305 76.259 amax 80.749 83.066 78.744 emean 0.486 0.504 0.468 emin 0.471 0.489 0.453 emax 0.503 0.522 0.484 imean 31.222 31.264 31.170 imin 30.617 30.621 30.633 imax 31.914 31.966 31.820 excite_mean 0.710 0.724 0.698 fracstop 1.000 1.000 1.000 cjmean 2.805 2.797 2.813 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 199.5 204.7 195.3 kozaiamp 180.0 180.0 179.9