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: 16GA277 # Created Sat Apr 20 01:17:54 2024 # Orbit generated from Bernstein formalism # Fitting 12 observations of 13 # Arc: 1.92y # First observation: 2016/04/10 # Last observation: 2018/03/12 Preliminary a, adot, b, bdot, g, gdot: -0.000097 0.014314 0.000001 -0.000169 0.016841 0.000000 # Chi-squared of fit: 3.33 DOF: 18 RMS: 0.09 # Min/Max residuals: -0.19 0.17 # Exact a, adot, b, bdot, g, gdot: 1.042915E-05 1.398190E-02 -1.971007E-06 -1.579797E-04 1.682683E-02 -1.013639E-02 # Covariance matrix: 5.3688E-13 -7.0520E-13 1.5574E-15 1.8831E-14 1.9135E-13 -1.0336E-11 -7.0520E-13 2.1308E-12 1.0394E-14 -6.8373E-14 1.0525E-13 5.1509E-11 1.5574E-15 1.0394E-14 3.9821E-13 -2.4319E-13 3.2014E-14 5.8014E-13 1.8831E-14 -6.8373E-14 -2.4319E-13 2.1572E-13 1.4494E-14 -1.6619E-12 1.9135E-13 1.0525E-13 3.2014E-14 1.4494E-14 1.6834E-12 1.8884E-11 -1.0336E-11 5.1509E-11 5.8014E-13 -1.6619E-12 1.8884E-11 1.5372E-09 # lat0 lon0 xBary yBary zBary JD0 19.721677 -154.507130 0.084677 0.335607 -0.935800 2457488.834199 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 349.55397 +/- 0.174 Argument of Peri: 178.01102 +/- 0.035 Long of Asc Node: 112.78158 +/- 0.006 Inclination: 19.42068 +/- 0.000 Eccentricity: 0.76941170 +/- 0.0029 Semi-Major Axis: 156.82928742 +/- 1.7351 Time of Perihelion: 2478296.0457 +/- 36.5 Perihelion: 36.16299944 +/- 0.6112 Aphelion: 277.49557541 +/- 3.1046 Period (y) 1964.0338 +/- 32.59 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -51.43363895 +/- 0.0039 Ecliptic Y -24.43191143 +/- 0.0018 Ecliptic Z 20.05427991 +/- 0.0015 Ecliptic XDOT 0.00237286 +/- 0.0000 Ecliptic YDOT -0.00139598 +/- 0.0000 Ecliptic ZDOT -0.00058074 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 60.36979090 +/- 0.0034 Geocenter to KBO 59.42888295 +/- 0.0046 # Hcoef: 7.55
The following table shows the complete astrometric record for 16GA277. 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 (16GA277) followed by the observatory code and reference code for the source of the astrometry.
2016 04 10.33341 14 03 05.221 +08 32 12.58 25.3r 16GA277 568 C~3wqc 2016 04 10.59004 14 03 04.340 +08 32 17.78 25.4r 16GA277 568 C~3wqc 2016 05 03.18759 14 01 51.066 +08 38 31.91 16GA277 304 C~3wqc 2016 05 03.23875 14 01 50.903 +08 38 32.27 16GA277 304 C~3wqc 2017 03 01.30959 14 07 52.331 +07 57 38.95 16GA277 304 C~3wqc 2017 03 01.35365 14 07 52.252 +07 57 40.10 16GA277 304 C~3wqc 2017 04 26.17271 14 05 16.858 +08 18 41.37 25.2r 16GA277 304 C~3wqc 2017 04 26.21694 14 05 16.721 +08 18 41.88 25.1r 16GA277 304 C~3wqc 2018 03 11.33560 14 10 39.064 +07 43 03.35 16GA277 304 C~3wqc 2018 03 11.34355 14 10 39.054 +07 43 03.51 25.2r 16GA277 304 C~3wqc 2018 03 11.38262 14 10 38.953 +07 43 04.70 16GA277 304 C~3wqc 2018 03 12.35140 14 10 36.804 +07 43 29.65 16GA277 304 C~3wqc 2018 03 12.37969 14 10 36.746 +07 43 30.26 16GA277 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 ( 0.56) 0.00 ( 0.38)
2 0.0007 -14.06 -0.13 0.10 0.07
3 0.0626 -1162.55 -0.02 -45.41 0.03
4 0.0627 -1164.93 0.13 -45.95 -0.19
5 0.8897 4725.52 0.03 -377.59 -0.02
6 0.8899 4724.01 0.02 -376.95 -0.01
7 1.0427 2114.60 -0.12 -45.20 0.17
8 1.0428 2112.52 0.10 -45.46 0.07
9 1.9165 7353.93 -0.05 -283.84 -0.08
10 1.9165 7353.73 0.07 -283.74 -0.08
11 1.9166 7351.89 -0.17 -283.19 0.02
12 1.9193 7312.97 -0.00 -271.71 0.05
13 1.9194 7311.94 0.14 -271.46 -0.02
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.
16GA277 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 151.420 156.239 146.938 ecceobj 0.764 0.772 0.756 incobj 19.420 19.421 19.420 qmin 33.585 33.411 33.942 qmax 286.376 328.644 272.674 amean 151.106 168.072 146.582 amin 146.369 155.127 141.298 amax 160.824 181.806 154.415 emean 0.766 0.790 0.757 emin 0.751 0.767 0.741 emax 0.782 0.808 0.769 imean 16.316 16.559 16.542 imin 15.254 15.483 15.587 imax 18.158 18.141 18.151 excite_mean 0.816 0.840 0.809 fracstop 1.000 1.000 1.000 cjmean 2.962 2.957 2.968 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 245.3 227.8 240.8 kozaiamp 68.6 50.1 64.1