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: 16GV370
# Created Wed Nov 27 02:10:38 2024
# Orbit generated from Bernstein formalism
# Fitting 17 observations of 17
# Arc: 62.91d
# First observation: 2016/04/02
# Last observation: 2016/06/04
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.030022 -0.000000 0.001900 0.025288 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 4.60 DOF: 29 RMS: 0.09
# Min/Max residuals: -0.21 0.18
# Exact a, adot, b, bdot, g, gdot:
1.594105E-05 2.465095E-02 1.192129E-06 1.790563E-03 2.442660E-02 -1.580043E-04
# Covariance matrix:
1.8665E-12 2.3630E-09 -5.0748E-14 4.8814E-11 3.9077E-10 -3.7449E-08
2.3630E-09 3.4590E-06 -7.3877E-11 7.0698E-08 5.6046E-07 -5.8204E-05
-5.0748E-14 -7.3877E-11 1.5119E-13 -2.3951E-12 -1.1990E-11 1.2372E-09
4.8814E-11 7.0698E-08 -2.3951E-12 1.4600E-09 1.1493E-08 -1.1782E-06
3.9077E-10 5.6046E-07 -1.1990E-11 1.1493E-08 9.1404E-08 -9.2531E-06
-3.7449E-08 -5.8204E-05 1.2372E-09 -1.1782E-06 -9.2531E-06 1.0329E-03
# lat0 lon0 xBary yBary zBary JD0
1.709735 -175.564399 -0.145200 0.029523 -0.984541 2457480.934529
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 358.46135 +/- 359.349
Argument of Peri: 23.85639 +/- 152.122
Long of Asc Node: 162.70160 +/- 1.403
Inclination: 4.46132 +/- 0.272
Eccentricity: 0.09293277 +/- 0.1788
Semi-Major Axis: 46.22129974 +/- 6.6398
Time of Perihelion: 2457971.0688 +/- 229350.1
Perihelion: 41.92582617 +/- 10.2264
Aphelion: 50.51677330 +/- 10.9985
Period (y) 314.2472 +/- 67.71
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.77270799 +/- 0.5050
Ecliptic Y -3.38838922 +/- 0.0391
Ecliptic Z 1.22153404 +/- 0.0151
Ecliptic XDOT 0.00023741 +/- 0.0036
Ecliptic YDOT -0.00275987 +/- 0.0001
Ecliptic ZDOT 0.00020008 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 41.92770516 +/- 0.5031
Geocenter to KBO 40.93897419 +/- 0.5067
# Hcoef: 8.16
The following table shows the complete astrometric record for 16GV370. 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 (16GV370) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.43374 12 18 59.80 -00 11 36.3 23.9i 16GV370 T09 C~8COV 2016 04 02.44189 12 18 59.76 -00 11 35.9 24.0i 16GV370 T09 C~8COV 2016 04 02.46633 12 18 59.66 -00 11 35.3 24.2i 16GV370 T09 C~8COV 2016 04 02.49093 12 18 59.54 -00 11 34.8 23.7i 16GV370 T09 C~8COV 2016 04 02.51252 12 18 59.45 -00 11 33.9 23.9i 16GV370 T09 C~8COV 2016 04 02.52328 12 18 59.40 -00 11 33.8 24.3i 16GV370 T09 C~8COV 2016 04 04.34598 12 18 51.43 -00 10 40.8 25.4g 16GV370 T09 C~8COV 2016 04 04.36164 12 18 51.36 -00 10 40.3 25.4g 16GV370 T09 C~8COV 2016 04 04.40435 12 18 51.18 -00 10 39.0 25.5g 16GV370 T09 C~8COV 2016 04 04.41295 12 18 51.15 -00 10 38.8 25.7g 16GV370 T09 C~8COV 2016 06 04.25196 12 15 48.06 +00 08 32.4 24.1z 16GV370 T09 C~8COV 2016 06 04.27037 12 15 48.05 +00 08 32.4 24.1z 16GV370 T09 C~8COV 2016 06 04.28656 12 15 48.03 +00 08 32.5 23.8z 16GV370 T09 C~8COV 2016 06 04.30275 12 15 48.02 +00 08 32.5 24.0z 16GV370 T09 C~8COV 2016 06 04.30544 12 15 48.02 +00 08 32.5 23.8z 16GV370 T09 C~8COV 2016 06 04.32707 12 15 47.98 +00 08 32.5 23.6z 16GV370 T09 C~8COV 2016 06 04.34057 12 15 47.98 +00 08 32.9 24.1z 16GV370 T09 C~8COV
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 -0.01
2 0.0000 -0.71 -0.11 0.13 0.12
3 0.0001 -2.32 0.06 0.09 0.07
4 0.0002 -4.18 0.01 -0.17 -0.19
5 0.0002 -5.77 -0.01 0.12 0.10
6 0.0002 -6.50 0.05 -0.08 -0.11
7 0.0052 -137.26 -0.07 1.16 -0.09
8 0.0053 -138.43 -0.10 1.20 -0.05
9 0.0054 -141.42 0.01 1.32 0.07
10 0.0054 -141.91 0.15 1.33 0.08
11 0.1720 -3119.84 -0.15 -31.08 0.04
12 0.1720 -3119.98 0.02 -31.14 0.01
13 0.1721 -3120.29 -0.03 -31.16 0.01
14 0.1721 -3120.43 0.09 -31.22 -0.02
15 0.1721 -3120.43 0.14 -31.22 -0.01
16 0.1722 -3120.98 -0.06 -31.46 -0.21
17 0.1722 -3121.14 -0.00 -31.09 0.18
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.