Orbit Fit and Astrometric record for 11HP83

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: 11HP83    
# Created Sat Dec  4 02:11:14 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     25 observations of     25
# Arc:   7.27y
# First observation: 2011/04/29
#  Last observation: 2018/08/04
# Chi-squared of fit:    31.86 DOF:     44 RMS:  0.20
# Min/Max residuals:    -0.55    0.57
# Exact a, adot, b, bdot, g, gdot:
  1.605465E-05  3.109963E-02 -5.109413E-06 -1.136708E-02  2.802066E-02  2.783760E-03
# Covariance matrix:
  3.7100E-13 -2.7604E-13 -4.9738E-14  9.1521E-14  9.0170E-14 -1.1822E-12
 -2.7604E-13  5.0155E-13  9.5343E-14 -1.8811E-13  1.2780E-14  2.4274E-12
 -4.9738E-14  9.5343E-14  2.3807E-13 -7.2180E-14 -6.6843E-15  4.6931E-13
  9.1521E-14 -1.8811E-13 -7.2180E-14  8.0195E-14 -5.1890E-15 -9.2598E-13
  9.0170E-14  1.2780E-14 -6.6843E-15 -5.1890E-15  2.6841E-13  6.3753E-14
 -1.1822E-12  2.4274E-12  4.6931E-13 -9.2598E-13  6.3753E-14  1.1949E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.208391 -123.516560    0.317780   -0.346872   -0.893868  2455680.598196
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:            8.91406 +/-     0.010
Argument of Peri:      209.78248 +/-     0.021
Long of Asc Node:       12.37273 +/-     0.000
Inclination:            28.68297 +/-     0.000
Eccentricity:         0.30732058 +/-    0.0001
Semi-Major Axis:     52.23548213 +/-    0.0086
Time of Perihelion: 2452266.0550 +/-       4.1
Perihelion:          36.18244346 +/-    0.0086
Aphelion:            68.28852081 +/-    0.0129
Period (y)              377.5345 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.16126974 +/-    0.0003
Ecliptic Y          -28.36294372 +/-    0.0005
Ecliptic Z          -12.91068491 +/-    0.0002
Ecliptic XDOT         0.00261338 +/-    0.0000
Ecliptic YDOT        -0.00154838 +/-    0.0000
Ecliptic ZDOT        -0.00113380 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.58268904 +/-    0.0004
Geocenter to KBO     35.68792535 +/-    0.0007
# Hcoef:  4.88

The following table shows the complete astrometric record for 11HP83. 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 (11HP83) followed by the observatory code and reference code for the source of the astrometry.

2011 04  29.09743  15 11 30.029  -39 52 22.00  20.9R 11HP83    809  C~0Vpa      
2011 04  29.24020  15 11 29.066  -39 52 21.14  20.9R 11HP83    809  C~0Vpa      
2011 04  29.32448  15 11 28.488  -39 52 20.85  20.8R 11HP83    809  C~0Vpa      
2011 05  11.14006  15 10 07.05   -39 50 37.7         11HP83    809  C~0Vpa      
2011 05  11.19622  15 10 06.67   -39 50 36.7         11HP83    809  C~0Vpa      
2011 06  26.98374  15 05 23.56   -39 31 25.5         11HP83    807  C~0evM      
2011 06  27.08692  15 05 23.08   -39 31 22.2         11HP83    807  C~0evM      
2012 03  29.24507  15 22 27.78   -40 54 23.4         11HP83    809  C~0hfZ      
2012 03  29.32990  15 22 27.37   -40 54 25.1         11HP83    809  C~0hfZ      
2012 06  24.10247  15 13 25.09   -40 40 42.0         11HP83    809  C~0hfZ      
2012 06  24.18290  15 13 24.69   -40 40 39.5         11HP83    809  C~0hfZ      
2017 05  05.256725 16 02 15.60   -45 53 16.3   20.9g 11HP83    W84  C~3sqN      
2017 05  05.257787 16 02 15.60   -45 53 16.3   20.8r 11HP83    W84  C~3sqN      
2017 05  05.258459 16 02 15.59   -45 53 16.4   20.4i 11HP83    W84  C~3sqN      
2017 05  05.259138 16 02 15.59   -45 53 16.4   19.9z 11HP83    W84  C~3sqN      
2017 05  05.259823 16 02 15.60   -45 53 16.5   19.8y 11HP83    W84  C~3sqN      
2017 05  05.260504 16 02 15.57   -45 53 16.3   19.7y 11HP83    W84  C~3sqN      
2017 05  05.261200 16 02 15.57   -45 53 16.4   20.2z 11HP83    W84  C~3sqN      
2017 05  05.261898 16 02 15.57   -45 53 16.3   20.3i 11HP83    W84  C~3sqN      
2017 05  05.262582 16 02 15.56   -45 53 16.3   20.6r 11HP83    W84  C~3sqN      
2017 05  05.263649 16 02 15.55   -45 53 16.3   20.8g 11HP83    W84  C~3sqN      
2018 05  20.301590 16 09 49.55   -46 43 47.9         11HP83    W84  C~3sqN      
2018 05  20.302652 16 09 49.54   -46 43 47.8         11HP83    W84  C~3sqN      
2018 08  04.111874 16 02 41.33   -46 12 30.7         11HP83    W84  C~3sqN      
2018 08  04.112952 16 02 41.33   -46 12 30.5         11HP83    W84  C~3sqN      

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     0.28       0.00    -0.35
     2   0.0004      0.00     0.55       0.00    -0.07
     3   0.0006      0.00     0.57       0.00    -0.18
     4   0.0330      0.00    -0.55       0.00    -0.03
     5   0.0331      0.00    -0.30       0.00     0.26
     6   0.1612      0.00    -0.04       0.00     0.12
     7   0.1615      0.00    -0.33       0.00     0.12
     8   0.9176      0.00    -0.21       0.00     0.01
     9   0.9178      0.00    -0.35       0.00     0.10
    10   1.1554      0.00     0.25       0.00     0.08
    11   1.1556      0.00     0.20       0.00     0.00
    12   6.0182      0.00    -0.08       0.00     0.00
    13   6.0182      0.00     0.04       0.00     0.01
    14   6.0182      0.00    -0.04       0.00    -0.09
    15   6.0182      0.00     0.03       0.00    -0.08
    16   6.0182      0.00     0.26       0.00    -0.18
    17   6.0182      0.00    -0.12       0.00     0.02
    18   6.0182      0.00    -0.05       0.00    -0.07
    19   6.0182      0.00     0.03       0.00     0.03
    20   6.0182      0.00    -0.05       0.00     0.03
    21   6.0183      0.00    -0.08       0.00     0.04
    22   7.0587      0.00    -0.06       0.00     0.02
    23   7.0587      0.00    -0.09       0.00     0.12
    24   7.2663      0.00     0.02       0.00    -0.05
    25   7.2663      0.00     0.05       0.00     0.11

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.

11HP83    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        51.983    51.983    51.983
ecceobj         0.304     0.304     0.304
incobj         28.711    28.711    28.711
qmin           34.930    34.747    34.800
qmax           70.623    71.021    70.692
amean          52.294    52.419    52.386
amin           51.737    51.876    51.799
amax           53.040    53.156    53.085
emean           0.309     0.316     0.314
emin            0.287     0.295     0.293
emax            0.332     0.337     0.333
imean          28.675    28.495    28.554
imin           28.026    27.967    28.009
imax           29.269    29.226    29.246
excite_mean     0.571     0.572     0.572
fracstop        1.000     1.000     1.000
cjmean          2.774     2.774     2.774

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       189.0     186.9     186.9
kozaiamp        179.9     180.0     180.0