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 Fri Dec 15 02:37:38 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   1.16y
# First observation: 2011/04/29
#  Last observation: 2012/06/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000037   0.030862   0.000000  -0.011283   0.027791   0.000000
# Chi-squared of fit:    11.31 DOF:   16 RMS:  0.18
# Min/Max residuals:    -0.46    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.697427E-05  3.110521E-02 -5.103652E-06 -1.136953E-02  2.802483E-02  3.024617E-03
# Covariance matrix:
  3.6088E-13  4.9482E-13  1.3746E-14 -3.5368E-13  6.3823E-13  2.9396E-11
  4.9482E-13  5.8891E-12  1.0916E-13 -2.5557E-12  3.8337E-12  2.1721E-10
  1.3746E-14  1.0916E-13  2.3437E-13 -2.9135E-13  7.3563E-14  4.5017E-12
 -3.5368E-13 -2.5557E-12 -2.9135E-13  1.8158E-12 -1.8480E-12 -1.0464E-10
  6.3823E-13  3.8337E-12  7.3563E-14 -1.8480E-12  3.1972E-12  1.5444E-10
  2.9396E-11  2.1721E-10  4.5017E-12 -1.0464E-10  1.5444E-10  8.9092E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.208391 -123.516560    0.317779   -0.346871   -0.893868  2455680.598196
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:            9.68865 +/-     0.309
Argument of Peri:      208.13234 +/-     0.640
Long of Asc Node:       12.37761 +/-     0.003
Inclination:            28.68503 +/-     0.001
Eccentricity:         0.31038883 +/-    0.0013
Semi-Major Axis:     52.34211019 +/-    0.0457
Time of Perihelion: 2451957.9895 +/-     118.7
Perihelion:          36.09570364 +/-    0.0735
Aphelion:            68.58851674 +/-    0.0894
Period (y)              378.6911 +/-      0.50
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.15851136 +/-    0.0012
Ecliptic Y          -28.35883816 +/-    0.0018
Ecliptic Z          -12.90876539 +/-    0.0008
Ecliptic XDOT         0.00260138 +/-    0.0000
Ecliptic YDOT        -0.00156667 +/-    0.0000
Ecliptic ZDOT        -0.00114237 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.57743134 +/-    0.0015
Geocenter to KBO     35.68264624 +/-    0.0023
# Hcoef:  5.56

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      

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     0.12       0.00    -0.27
  2   0.0004    -10.87     0.24      -2.35     0.05
  3   0.0006    -17.33     0.28      -3.98    -0.05
  4   0.0330   -945.01    -0.46    -175.34    -0.12
  5   0.0331   -949.49    -0.36    -175.65     0.21
  6   0.1612  -4412.60     0.20     -44.15     0.13
  7   0.1615  -4418.90    -0.01     -42.68     0.06
  8   0.9176   8246.60     0.06   -1543.11     0.00
  9   0.9178   8242.54    -0.07   -1545.95     0.06
 10   1.1554   2085.32     0.01   -2407.67     0.00
 11   1.1556   2080.25    -0.01   -2406.55    -0.09

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        52.089    52.252    51.939
ecceobj         0.307     0.311     0.303
incobj         28.713    28.715    28.710
qmin           34.615    34.449    35.123
qmax           71.280    71.881    70.563
amean          52.572    52.766    52.442
amin           52.053    52.231    51.858
amax           53.217    53.469    53.124
emean           0.320     0.322     0.310
emin            0.299     0.297     0.290
emax            0.340     0.346     0.330
imean          28.489    28.614    28.718
imin           27.970    27.799    28.124
imax           29.237    29.489    29.319
excite_mean     0.574     0.577     0.572
fracstop        1.000     1.000     1.000
cjmean          2.773     2.770     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       185.2     179.1     189.6
kozaiamp        180.0     180.0     179.9