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: 17BY236
# Created Wed Nov 27 02:10:46 2024
# Orbit generated from Bernstein formalism
# Fitting 10 observations of 10
# Arc: 24.03d
# First observation: 2017/01/30
# Last observation: 2017/02/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.023617 -0.000001 -0.001174 0.023772 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 5.53 DOF: 15 RMS: 0.13
# Min/Max residuals: -0.18 0.35
# Exact a, adot, b, bdot, g, gdot:
1.459136E-05 2.183212E-02 -1.345139E-06 -1.055382E-03 2.323617E-02 4.965888E-03
# Covariance matrix:
3.5642E-13 4.7547E-11 -1.4704E-14 -3.3442E-12 1.9471E-11 6.1996E-09
4.7547E-11 4.3783E-07 -5.3128E-11 -2.9822E-08 1.0971E-07 8.1790E-06
-1.4704E-14 -5.3128E-11 2.8021E-13 -8.8754E-13 -1.4014E-11 -1.5594E-09
-3.3442E-12 -2.9822E-08 -8.8754E-13 2.1912E-09 -7.4586E-09 -5.4371E-07
1.9471E-11 1.0971E-07 -1.4014E-11 -7.4586E-09 2.8033E-08 2.4844E-06
6.1996E-09 8.1790E-06 -1.5594E-09 -5.4371E-07 2.4844E-06 5.0595E-04
# lat0 lon0 xBary yBary zBary JD0
3.775876 -170.933200 0.842528 0.033916 -0.511467 2457784.124241
# Heliocentric elements and errors
Epoch: 2457780.5000 = 2017/01/27
Mean Anomaly: 69.46863 +/- 106.563
Argument of Peri: 32.65954 +/- 31.047
Long of Asc Node: 62.37761 +/- 0.949
Inclination: 4.58359 +/- 0.054
Eccentricity: 0.20396158 +/- 1.0115
Semi-Major Axis: 44.99162713 +/- 21.8149
Time of Perihelion: 2436509.7775 +/- 28728.1
Perihelion: 35.81506390 +/- 48.7099
Aphelion: 54.16819037 +/- 52.5443
Period (y) 301.7906 +/- 219.49
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.04853230 +/- 0.3056
Ecliptic Y -6.02073145 +/- 0.0488
Ecliptic Z 2.83404224 +/- 0.0204
Ecliptic XDOT -0.00017636 +/- 0.0026
Ecliptic YDOT -0.00264026 +/- 0.0004
Ecliptic ZDOT -0.00008561 +/- 0.0002
# Distances at JD0 (AU)
Heliocenter to KBO 43.55981102 +/- 0.3021
Geocenter to KBO 43.03634725 +/- 0.3101
# Hcoef: 9.09
The following table shows the complete astrometric record for 17BY236. 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 (17BY236) followed by the observatory code and reference code for the source of the astrometry.
2017 01 30.62344 12 39 15.55 -00 07 19.0 25.7z 17BY236 T09 C~81Bp 2017 01 30.63419 12 39 15.51 -00 07 19.0 25.3z 17BY236 T09 C~81Bp 2017 01 30.65979 12 39 15.48 -00 07 18.6 24.5z 17BY236 T09 C~81Bp 2017 02 02.62200 12 39 09.81 -00 06 29.2 25.3i 17BY236 T09 C~81Bp 2017 02 02.65568 12 39 09.75 -00 06 28.7 24.9i 17BY236 T09 C~81Bp 2017 02 02.66749 12 39 09.73 -00 06 28.4 24.9i 17BY236 T09 C~81Bp 2017 02 23.53862 12 38 12.29 +00 00 54.8 26.0r 17BY236 T09 C~81Bp 2017 02 23.61010 12 38 12.03 +00 00 56.5 26.0r 17BY236 T09 C~81Bp 2017 02 23.63983 12 38 11.96 +00 00 57.6 25.5r 17BY236 T09 C~81Bp 2017 02 23.65247 12 38 11.90 +00 00 57.5 25.6r 17BY236 T09 C~81Bp
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 0.05 0.00 0.13
2 0.0000 -0.55 -0.15 -0.24 -0.15
3 0.0001 -1.12 0.10 -0.04 -0.05
4 0.0082 -98.74 -0.13 11.98 -0.01
5 0.0083 -99.77 0.05 12.08 -0.02
6 0.0083 -100.16 0.08 12.24 0.10
7 0.0655 -1066.61 -0.04 81.37 -0.06
8 0.0657 -1070.86 -0.17 81.40 -0.18
9 0.0658 -1072.26 0.14 82.00 0.35
10 0.0658 -1073.05 0.08 81.56 -0.12
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.
17BY236 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0