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: 17HV109
# Created Mon Apr 28 01:11:08 2025
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 2.23y
# First observation: 2017/03/06
# Last observation: 2019/05/28
Preliminary a, adot, b, bdot, g, gdot:
0.000036 0.024568 0.000003 0.003549 0.024703 0.000000
# Chi-squared of fit: 3.84 DOF: 26 RMS: 0.09
# Min/Max residuals: -0.16 0.18
# Exact a, adot, b, bdot, g, gdot:
1.605079E-05 2.459850E-02 2.523713E-06 3.566606E-03 2.459915E-02 2.725791E-03
# Covariance matrix:
3.6726E-13 4.1495E-13 -1.0832E-14 9.6241E-14 5.2718E-13 1.1966E-11
4.1495E-13 2.6813E-12 -5.2343E-14 5.5996E-13 1.5818E-12 7.0427E-11
-1.0832E-14 -5.2343E-14 1.6006E-13 -8.9550E-14 -3.3675E-14 -1.4125E-12
9.6241E-14 5.5996E-13 -8.9550E-14 2.1356E-13 3.2144E-13 1.5360E-11
5.2718E-13 1.5818E-12 -3.3675E-14 3.2144E-13 1.4125E-12 4.0155E-11
1.1966E-11 7.0427E-11 -1.4125E-12 1.5360E-11 4.0155E-11 1.9336E-09
# lat0 lon0 xBary yBary zBary JD0
6.714097 -162.647368 0.520511 0.098616 -0.836565 2457819.057921
# Heliocentric elements and errors
Epoch: 2457810.5000 = 2017/02/26
Mean Anomaly: 40.64475 +/- 0.310
Argument of Peri: 346.68165 +/- 0.487
Long of Asc Node: 158.55245 +/- 0.003
Inclination: 10.58825 +/- 0.001
Eccentricity: 0.13221672 +/- 0.0015
Semi-Major Axis: 45.68154608 +/- 0.0211
Time of Perihelion: 2445078.0625 +/- 96.8
Perihelion: 39.64168207 +/- 0.0728
Aphelion: 51.72141008 +/- 0.0744
Period (y) 308.7588 +/- 0.21
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.49778131 +/- 0.0019
Ecliptic Y -11.80072577 +/- 0.0006
Ecliptic Z 4.75293144 +/- 0.0002
Ecliptic XDOT 0.00057654 +/- 0.0000
Ecliptic YDOT -0.00269583 +/- 0.0000
Ecliptic ZDOT 0.00042963 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.49605059 +/- 0.0018
Geocenter to KBO 40.65181093 +/- 0.0020
# Hcoef: 7.91
The following table shows the complete astrometric record for 17HV109. 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 (17HV109) followed by the observatory code and reference code for the source of the astrometry.
2017 03 06.55712 13 14 14.26 -00 36 17.5 24.0r 17HV109 T09 C~7zq4 2017 03 06.56884 13 14 14.22 -00 36 17.2 23.9r 17HV109 T09 C~7zq4 2017 03 06.59672 13 14 14.12 -00 36 16.3 24.1r 17HV109 T09 C~7zq4 2017 03 06.63947 13 14 13.97 -00 36 15.0 23.9r 17HV109 T09 C~7zq4 2017 04 26.35257 13 10 38.73 -00 11 11.2 24.7g 17HV109 T09 C~7zq4 2017 04 26.36735 13 10 38.66 -00 11 10.9 24.5g 17HV109 T09 C~7zq4 2017 04 26.41006 13 10 38.47 -00 11 09.7 24.7g 17HV109 T09 C~7zq4 2017 04 29.33880 13 10 26.18 -00 09 58.3 23.8z 17HV109 T09 C~7zq4 2017 04 29.36038 13 10 26.11 -00 09 57.8 23.8z 17HV109 T09 C~7zq4 2017 04 29.40122 13 10 25.93 -00 09 56.8 23.6z 17HV109 T09 C~7zq4 2019 04 07.41794 13 23 08.80 -01 01 48.5 23.2i 17HV109 T09 C~7zq4 2019 04 07.45863 13 23 08.60 -01 01 47.3 23.4i 17HV109 T09 C~7zq4 2019 04 07.51517 13 23 08.34 -01 01 45.6 23.7i 17HV109 T09 C~7zq4 2019 05 28.29886 13 19 46.12 -00 43 01.0 24.1z 17HV109 T09 C~7zq4 2019 05 28.33960 13 19 45.99 -00 43 00.7 24.3z 17HV109 T09 C~7zq4 2019 05 28.39346 13 19 45.85 -00 43 00.2 24.9z 17HV109 T09 C~7zq4
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 -0.05
2 0.0000 -0.67 0.00 0.05 -0.08
3 0.0001 -2.40 -0.01 0.31 -0.01
4 0.0002 -4.97 0.05 0.66 0.03
5 0.1391 -3563.06 0.08 165.78 -0.01
6 0.1391 -3564.15 0.02 165.66 -0.10
7 0.1392 -3567.24 -0.10 165.69 -0.01
8 0.1472 -3764.96 -0.16 161.73 0.01
9 0.1473 -3766.12 0.14 161.79 0.12
10 0.1474 -3769.00 0.03 161.69 0.10
11 2.0859 8002.77 0.16 1626.59 0.09
12 2.0860 7999.53 -0.05 1626.56 -0.01
13 2.0861 7995.28 -0.10 1626.65 -0.02
14 2.2252 4759.15 -0.06 1516.32 0.11
15 2.2253 4757.23 -0.13 1515.86 -0.09
16 2.2254 4755.10 0.18 1515.53 -0.08
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.
17HV109 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.140 45.211 45.069 ecceobj 0.126 0.130 0.122 incobj 10.625 10.625 10.624 qmin 38.741 38.331 38.908 qmax 52.397 52.967 52.082 amean 45.395 45.496 45.326 amin 45.023 45.098 44.953 amax 45.805 45.961 45.738 emean 0.130 0.138 0.126 emin 0.118 0.125 0.113 emax 0.144 0.154 0.139 imean 9.953 9.956 9.961 imin 9.460 9.451 9.484 imax 10.501 10.537 10.485 excite_mean 0.217 0.221 0.214 fracstop 1.000 1.000 1.000 cjmean 3.061 3.060 3.062 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 177.2 179.5 176.9 kozaiamp 180.0 180.0 180.0