Orbit Fit and Astrometric record for 10XE91

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: 10XE91    
# Created Tue Oct 24 01:37:56 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   24
# Arc:   3.28y
# First observation: 2010/11/17
#  Last observation: 2014/02/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000365   0.032581   0.000114   0.002637   0.027904   0.000000
# Chi-squared of fit:    17.46 DOF:   38 RMS:  0.16
# Min/Max residuals:    -0.45    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.739765E-05  3.339610E-02  1.598307E-06  2.831441E-03  2.785129E-02  7.495068E-03
# Covariance matrix:
  2.5400E-13 -2.9589E-13  1.9978E-14 -3.9195E-14 -3.8349E-14 -2.9487E-12
 -2.9589E-13  7.1245E-13 -6.0179E-14  1.1821E-13  1.3736E-13  8.9906E-12
  1.9978E-14 -6.0179E-14  1.9511E-13 -1.0333E-13  3.3480E-14 -1.1201E-12
 -3.9195E-14  1.1821E-13 -1.0333E-13  9.6809E-14 -6.1311E-14  2.1724E-12
 -3.8349E-14  1.3736E-13  3.3480E-14 -6.1311E-14  5.9827E-13 -1.6497E-12
 -2.9487E-12  8.9906E-12 -1.1201E-12  2.1724E-12 -1.6497E-12  1.4644E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -17.601467   73.255872    0.306649   -0.283721   -0.894361  2455518.044706
# Heliocentric elements and errors
Epoch:              2455510.5000  =  2010/11/10
Mean Anomaly:           13.55348 +/-     0.015
Argument of Peri:      245.05983 +/-     0.041
Long of Asc Node:      147.44256 +/-     0.001
Inclination:            17.75108 +/-     0.000
Eccentricity:         0.46240896 +/-    0.0004
Semi-Major Axis:     63.50158392 +/-    0.0354
Time of Perihelion: 2448551.8751 +/-       5.2
Perihelion:          34.13788260 +/-    0.0315
Aphelion:            92.86528524 +/-    0.0575
Period (y)              506.0402 +/-      0.42
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           10.42744551 +/-    0.0003
Ecliptic Y           33.58230868 +/-    0.0009
Ecliptic Z          -10.85743366 +/-    0.0003
Ecliptic XDOT        -0.00291750 +/-    0.0000
Ecliptic YDOT         0.00170523 +/-    0.0000
Ecliptic ZDOT         0.00004251 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.80199644 +/-    0.0008
Geocenter to KBO     35.90497562 +/-    0.0010
# Hcoef:  6.67

The following table shows the complete astrometric record for 10XE91. 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 (10XE91) followed by the observatory code and reference code for the source of the astrometry.

2010 11  17.54394  04 56 00.209  +04 54 45.61  21.6i 10XE91    F51  C~1w3m      
2010 12  04.50962  04 54 30.826  +04 51 16.39  22.8w 10XE91    F51  C~1w3m      
2010 12  05.41761  04 54 25.840  +04 51 08.40  22.3w 10XE91    F51  C~1w3m      
2010 12  05.43251  04 54 25.787  +04 51 08.38  22.4w 10XE91    F51  C~1w3m      
2010 12  05.44713  04 54 25.708  +04 51 08.42  22.5w 10XE91    F51  C~1w3m      
2010 12  05.46171  04 54 25.623  +04 51 08.37  22.2w 10XE91    F51  C~1w3m      
2011 10  23.45308  05 05 16.709  +05 25 54.57  22.4w 10XE91    F51  C~1w3m      
2011 10  23.46795  05 05 16.679  +05 25 54.02  22.6w 10XE91    F51  C~1w3m      
2011 10  23.48284  05 05 16.621  +05 25 53.77  22.5w 10XE91    F51  C~1w3m      
2011 10  23.49778  05 05 16.579  +05 25 53.23  22.5w 10XE91    F51  C~1w3m      
2011 12  01.34532  05 02 20.954  +05 14 28.53  22.9w 10XE91    F51  C~1w3m      
2011 12  01.35919  05 02 20.881  +05 14 28.34  23.0w 10XE91    F51  C~1w3m      
2011 12  01.37307  05 02 20.808  +05 14 28.22  22.6w 10XE91    F51  C~1w3m      
2011 12  01.38684  05 02 20.717  +05 14 28.02  22.4w 10XE91    F51  C~1w3m      
2011 12  16.39839  05 00 59.889  +05 13 02.49  22.2r 10XE91    F51  C~1w3m      
2012 12  22.37009  05 07 50.377  +05 35 04.93  21.6i 10XE91    F51  C~1w3m      
2013 01  08.29239  05 06 27.567  +05 36 52.46  22.3w 10XE91    F51  C~1w3m      
2013 01  08.30620  05 06 27.528  +05 36 52.73  22.1w 10XE91    F51  C~1w3m      
2013 01  08.32002  05 06 27.461  +05 36 53.17  22.1w 10XE91    F51  C~1w3m      
2013 01  08.33396  05 06 27.392  +05 36 52.86  22.1w 10XE91    F51  C~1w3m      
2013 01  27.33280  05 05 15.267  +05 41 45.89  21.3i 10XE91    F51  C~1w3m      
2014 02  28.25231  05 11 40.759  +06 16 02.61  22.3w 10XE91    F51  C~1w3m      
2014 02  28.26447  05 11 40.748  +06 16 02.67  22.3w 10XE91    F51  C~1w3m      
2014 02  28.28872  05 11 40.749  +06 16 03.23  22.2w 10XE91    F51  C~1w3m      

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     0.32       0.00     0.00
  2   0.0464  -1351.11 (   0.67)    -53.80 (   0.49)
  3   0.0489  -1426.06    -0.43     -53.13    -0.18
  4   0.0490  -1426.85     0.02     -53.05    -0.13
  5   0.0490  -1428.02     0.06     -52.88     0.02
  6   0.0491  -1429.28     0.00     -52.78     0.09
  7   0.9306   8476.46    -0.20     916.05     0.24
  8   0.9307   8475.96     0.07     915.55     0.01
  9   0.9307   8475.07    -0.05     915.40     0.13
 10   0.9307   8474.38     0.05     914.93    -0.07
 11   1.0371   5787.96     0.09     527.89     0.09
 12   1.0371   5786.85     0.11     527.83     0.03
 13   1.0372   5785.76     0.15     527.83     0.04
 14   1.0372   5784.38    -0.10     527.78    -0.00
 15   1.0783   4574.30 (   0.47)    579.03 (   0.66)
 16   2.0967  10822.93    -0.14    1209.26     0.03
 17   2.1430   9603.21    -0.26    1452.97    -0.09
 18   2.1431   9602.66     0.11    1453.30    -0.01
 19   2.1431   9601.71     0.09    1453.85     0.28
 20   2.1432   9600.65    -0.04    1453.66    -0.17
 21   2.1952   8561.28     0.08    1864.71    -0.45
 22   3.2819  14523.31     0.14    3281.69     0.28
 23   3.2819  14523.16    -0.04    3281.76     0.00
 24   3.2820  14523.23    -0.03    3282.32    -0.14

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.

10XE91    quality flag:2

Type:          3:1EE  SCATNEAR     3:1EE

axisobj        64.113    64.222    64.004
ecceobj         0.467     0.468     0.466
incobj         17.740    17.740    17.740
qmin           33.518    33.039    33.502
qmax           94.062    94.485    93.944
amean          62.632    62.636    62.632
amin           61.477    61.439    61.544
amax           64.113    64.222    64.019
emean           0.452     0.456     0.454
emin            0.439     0.435     0.442
emax            0.467     0.475     0.467
imean          16.801    16.611    16.530
imin           16.295    15.593    16.259
imax           17.130    17.798    16.821
excite_mean     0.537     0.538     0.536
fracstop        1.000     1.000     1.000
cjmean          2.944     2.941     2.945

libcent 0       180.0    -180.0     179.8
libamp  0       170.8    -180.0     162.7
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       201.7     175.5     184.8
kozaiamp        180.0     180.0     180.0