Orbit Fit and Astrometric record for 07HV90

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 Wed Dec 25 02:08:54 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:
  1.553329E-05  2.477224E-02 -1.166546E-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:     44.32945324 +/-    0.0066
Time of Perihelion: 2451045.0558 +/-      17.6
Perihelion:          41.36349269 +/-    0.0075
Aphelion:            47.29541378 +/-    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   41.42126183 +/-    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