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: 07HV90
# Created Sun Nov 24 02:08:55 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 32 observations of 32
# Arc: 9.15y
# First observation: 2007/04/21
# Last observation: 2016/06/13
# Chi-squared of fit: 37.29 DOF: 58 RMS: 0.19
# Min/Max residuals: -0.50 0.43
# Exact a, adot, b, bdot, g, gdot:
1.553331E-05 2.477224E-02 -1.166539E-06 -1.100444E-03 2.467201E-02 6.132385E-04
# Covariance matrix:
4.7005E-13 -1.4394E-13 -5.1516E-15 4.3709E-15 -6.3477E-14 -4.3182E-13
-1.4394E-13 1.6076E-13 7.3464E-15 -6.2967E-15 3.1241E-13 6.2131E-13
-5.1516E-15 7.3464E-15 3.6606E-13 -4.9004E-14 1.3263E-14 3.0360E-14
4.3709E-15 -6.2967E-15 -4.9004E-14 7.6560E-15 -1.1496E-14 -2.5976E-14
-6.3477E-14 3.1241E-13 1.3263E-14 -1.1496E-14 1.0134E-12 1.1328E-12
-4.3182E-13 6.2131E-13 3.0360E-14 -2.5976E-14 1.1328E-12 2.5637E-12
# lat0 lon0 xBary yBary zBary JD0
1.547221 -121.330510 0.472814 0.023924 -0.882071 2454211.734814
# Heliocentric elements and errors
Epoch: 2454212.5000 = 2007/04/22
Mean Anomaly: 10.57729 +/- 0.059
Argument of Peri: 136.88657 +/- 0.068
Long of Asc Node: 88.99028 +/- 0.001
Inclination: 2.93984 +/- 0.000
Eccentricity: 0.06690722 +/- 0.0001
Semi-Major Axis: 44.32945323 +/- 0.0066
Time of Perihelion: 2451045.0558 +/- 17.6
Perihelion: 41.36349269 +/- 0.0075
Aphelion: 47.29541377 +/- 0.0082
Period (y) 295.1527 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -21.93167796 +/- 0.0009
Ecliptic Y -35.12158246 +/- 0.0014
Ecliptic Z 1.09434047 +/- 0.0001
Ecliptic XDOT 0.00231689 +/- 0.0000
Ecliptic YDOT -0.00149339 +/- 0.0000
Ecliptic ZDOT -0.00012032 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.42126182 +/- 0.0013
Geocenter to KBO 40.53178404 +/- 0.0017
# Hcoef: 6.54
The following table shows the complete astrometric record for 07HV90. 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 (07HV90) followed by the observatory code and reference code for the source of the astrometry.
2007 04 21.23406 15 47 10.71 -18 21 12.3 21.0R 07HV90 807 Cv1554 2007 04 22.27870 15 47 06.20 -18 20 57.5 07HV90 807 Cv1554 2007 04 22.34636 15 47 05.94 -18 20 56.5 07HV90 807 Cv1554 2011 06 06.38845 16 06 47.290 -19 35 03.57 22.3G 07HV90 F51 C~2r7H 2011 06 06.41735 16 06 47.157 -19 35 03.00 22.3G 07HV90 F51 C~2r7H 2011 06 06.43179 16 06 47.073 -19 35 03.41 22.3G 07HV90 F51 C~2r7H 2013 06 07.45342 16 18 23.940 -20 13 06.64 22.6G 07HV90 F51 C~2r7H 2013 07 01.33161 16 16 34.266 -20 09 08.16 22.7G 07HV90 F51 C~2r7H 2013 07 01.34497 16 16 34.214 -20 09 08.02 23.0G 07HV90 F51 C~2r7H 2013 07 01.35829 16 16 34.156 -20 09 07.98 23.4G 07HV90 F51 C~2r7H 2014 05 21.43873 16 25 45.464 -20 34 18.93 22.5G 07HV90 F51 C~2r7H 2014 05 21.45184 16 25 45.397 -20 34 18.35 22.7G 07HV90 F51 C~2r7H 2014 05 21.46491 16 25 45.343 -20 34 18.23 22.4G 07HV90 F51 C~2r7H 2014 05 21.47800 16 25 45.219 -20 34 17.73 21.9G 07HV90 F51 C~2r7H 2014 05 28.44208 16 25 09.912 -20 33 01.79 22.8G 07HV90 F51 C~2r7H 2014 06 18.42061 16 23 25.326 -20 29 20.96 22.5G 07HV90 F51 C~2r7H 2014 06 26.34539 16 22 48.978 -20 28 07.23 22.5G 07HV90 F51 C~2r7H 2014 06 28.34471 16 22 40.255 -20 27 49.38 22.8G 07HV90 F51 C~2r7H 2014 06 28.35530 16 22 40.177 -20 27 49.62 22.5G 07HV90 F51 C~2r7H 2014 06 28.36590 16 22 40.153 -20 27 49.28 22.3G 07HV90 F51 C~2r7H 2015 05 20.35342 16 31 47.54 -20 51 39.4 07HV90 W84 C~1Tj1 2015 05 21.39469 16 31 42.32 -20 51 28.8 23.1V 07HV90 W84 C~1Tj1 2015 05 22.40746 16 31 37.23 -20 51 18.6 07HV90 W84 C~1Tj1 2015 05 24.34612 16 31 27.44 -20 50 58.4 07HV90 W84 C~1Tj1 2015 06 11.37464 16 29 55.883 -20 47 55.27 22.8G 07HV90 F51 C~2r7H 2015 06 13.39232 16 29 45.840 -20 47 35.66 23.0G 07HV90 F51 C~2r7H 2015 07 09.37284 16 27 50.090 -20 43 57.05 22.5G 07HV90 F51 C~2r7H 2015 07 12.37564 16 27 39.045 -20 43 37.31 22.6G 07HV90 F51 C~2r7H 2016 05 29.34594 16 36 54.967 -21 06 26.49 22.2R 07HV90 G37 C~2bkz 2016 05 29.39185 16 36 54.739 -21 06 26.31 07HV90 G37 C~2bkz 2016 06 08.44068 16 36 03.378 -21 04 50.65 21.6G 07HV90 F51 C~2r7H 2016 06 13.41727 16 35 38.389 -21 04 04.39 22.3G 07HV90 F51 C~2r7H
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 0.09 0.00 0.08
2 0.0029 0.00 -0.34 0.00 0.11
3 0.0030 0.00 0.22 0.00 0.15
4 4.1264 0.00 0.03 0.00 -0.06
5 4.1264 0.00 0.21 0.00 0.15
6 4.1265 0.00 0.04 0.00 -0.44
7 6.1306 0.00 -0.03 0.00 -0.12
8 6.1960 0.00 -0.06 0.00 -0.01
9 6.1961 0.00 -0.02 0.00 0.01
10 6.1961 0.00 -0.06 0.00 -0.06
11 7.0834 0.00 0.15 0.00 -0.33
12 7.0834 0.00 0.15 0.00 0.10
13 7.0835 0.00 0.35 0.00 0.08
14 7.0835 0.00 -0.50 0.00 0.43
15 7.1026 0.00 0.10 0.00 -0.11
16 7.1600 0.00 -0.03 0.00 -0.02
17 7.1817 0.00 0.07 0.00 -0.35
18 7.1872 0.00 0.15 0.00 0.02
19 7.1872 0.00 -0.32 0.00 -0.31
20 7.1872 0.00 0.02 0.00 -0.07
21 8.0797 0.00 -0.23 0.00 0.04
22 8.0826 0.00 -0.21 0.00 -0.02
23 8.0853 0.00 -0.13 0.00 -0.21
24 8.0907 0.00 -0.07 0.00 0.10
25 8.1400 0.00 -0.04 0.00 0.22
26 8.1455 0.00 -0.03 0.00 0.10
27 8.2167 0.00 -0.15 0.00 -0.06
28 8.2249 0.00 0.04 0.00 0.14
29 9.1064 0.00 0.18 0.00 0.16
30 9.1065 0.00 0.33 0.00 -0.10
31 9.1340 0.00 -0.15 0.00 0.04
32 9.1477 0.00 0.27 0.00 0.35
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.
07HV90 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.742 43.742 43.742 ecceobj 0.055 0.055 0.055 incobj 2.947 2.947 2.947 qmin 40.861 40.861 40.861 qmax 47.484 47.484 47.484 amean 44.068 44.068 44.068 amin 43.720 43.720 43.720 amax 44.431 44.431 44.431 emean 0.054 0.054 0.054 emin 0.037 0.037 0.037 emax 0.069 0.069 0.069 imean 1.196 1.196 1.196 imin 0.473 0.473 0.473 imax 1.767 1.767 1.768 excite_mean 0.058 0.058 0.058 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 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 204.3 204.4 204.3 kozaiamp 180.0 180.0 180.0