Orbit Fit and Astrometric record for 05LC54

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: 05LC54    
# Created Sun Oct 22 01:37:37 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   23
# Arc:   2.92y
# First observation: 2005/06/06
#  Last observation: 2008/05/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000071   0.023927   0.000029  -0.009816   0.023539   0.000000
# Chi-squared of fit:     7.86 DOF:   34 RMS:  0.11
# Min/Max residuals:    -0.26    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.504830E-05  2.320909E-02 -5.903574E-06 -9.575996E-03  2.372154E-02 -8.391208E-03
# Covariance matrix:
  2.1103E-13 -2.2556E-13 -2.0741E-15  3.0725E-14  3.1840E-13 -1.1444E-12
 -2.2556E-13  1.0541E-12  3.1627E-14 -3.1901E-13 -3.4006E-13  1.1738E-11
 -2.0741E-15  3.1627E-14  1.3592E-13 -6.4903E-14  7.8211E-15  4.2917E-13
  3.0725E-14 -3.1901E-13 -6.4903E-14  1.5826E-13 -2.4461E-14 -4.1488E-12
  3.1840E-13 -3.4006E-13  7.8211E-15 -2.4461E-14  1.5596E-12  8.2321E-13
 -1.1444E-12  1.1738E-11  4.2917E-13 -4.1488E-12  8.2321E-13  1.5240E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.485974 -118.285556   -0.246302    0.025550   -0.982264  2453527.746815
# Heliocentric elements and errors
Epoch:              2453520.5000  =  2005/05/30
Mean Anomaly:          338.00414 +/-     0.023
Argument of Peri:      236.16891 +/-     0.049
Long of Asc Node:       65.56067 +/-     0.000
Inclination:            22.41441 +/-     0.001
Eccentricity:         0.46346961 +/-    0.0005
Semi-Major Axis:     67.68414510 +/-    0.0444
Time of Perihelion: 2465947.5284 +/-       4.9
Perihelion:          36.31460055 +/-    0.0415
Aphelion:            99.05368966 +/-    0.0734
Period (y)              556.8505 +/-      0.55
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.22192000 +/-    0.0011
Ecliptic Y          -38.09286226 +/-    0.0019
Ecliptic Z            1.09298780 +/-    0.0001
Ecliptic XDOT         0.00280498 +/-    0.0000
Ecliptic YDOT        -0.00044906 +/-    0.0000
Ecliptic ZDOT        -0.00112992 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.14147454 +/-    0.0018
Geocenter to KBO     42.15577123 +/-    0.0022
# Hcoef:  6.98

The following table shows the complete astrometric record for 05LC54. 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 (05LC54) followed by the observatory code and reference code for the source of the astrometry.

2005 06  06.246072 15 59 41.75   -19 02 55.2         05LC54    645  C~1RHW      
2005 06  06.246901 15 59 41.74   -19 02 55.2         05LC54    645  C~1RHW      
2005 06  06.249389 15 59 41.73   -19 02 55.2         05LC54    645  C~1RHX      
2005 06  10.39687  15 59 22.23   -19 02 24.0   23.2g 05LC54    568  C~0X5g      
2005 06  10.42324  15 59 22.10   -19 02 23.7   23.3g 05LC54    568  C~0X5g      
2005 06  10.44979  15 59 22.00   -19 02 23.5   23.4g 05LC54    568  C~0X5g      
2005 06  11.41267  15 59 17.53   -19 02 16.5   23.8g 05LC54    568  C~0X5g      
2005 06  11.43760  15 59 17.42   -19 02 16.8   24.5g 05LC54    568  C~0X5g      
2005 07  28.24729  15 56 41.06   -18 59 59.8   22.6i 05LC54    568  C~0X5g      
2005 07  28.29707  15 56 40.98   -19 00 00.0   22.2i 05LC54    568  C~0X5g      
2005 07  29.25252  15 56 39.45   -19 00 02.5   22.8i 05LC54    568  C~0X5g      
2006 05  31.34870  16 05 19.60   -19 52 01.5         05LC54    568  C~0X5g      
2006 05  31.38488  16 05 19.41   -19 52 01.3         05LC54    568  C~0X5g      
2006 05  31.42036  16 05 19.24   -19 52 00.9         05LC54    568  C~0X5g      
2007 05  16.30023  16 11 53.14   -20 42 27.4         05LC54    675  C~0X5g      
2007 05  16.38685  16 11 52.70   -20 42 26.8         05LC54    675  C~0X5g      
2007 05  17.30067  16 11 48.18   -20 42 20.1   21.9r 05LC54    695  C~0X5g      
2007 05  17.38916  16 11 47.75   -20 42 19.3   21.9r 05LC54    695  C~0X5g      
2008 05  03.38826  16 18 17.97   -21 32 11.3         05LC54    695  C~0X5g      
2008 05  03.43070  16 18 17.78   -21 32 11.0         05LC54    695  C~0X5g      
2008 05  07.48542  16 17 58.79   -21 31 48.8         05LC54    568  C~0X5g      
2008 05  07.50855  16 17 58.68   -21 31 48.8         05LC54    568  C~0X5g      
2008 05  07.53172  16 17 58.56   -21 31 48.7         05LC54    568  C~0X5g      

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    -0.10
  2   0.0000     -0.14     0.01      -0.03    -0.12
  3   0.0000     -0.28     0.04      -0.06    -0.14
  4   0.0114   -277.43    -0.09     -24.68     0.00
  5   0.0114   -279.30    -0.18     -24.76     0.09
  6   0.0115   -280.73     0.17     -24.85     0.17
  7   0.0141   -344.23    -0.13     -30.66     0.19
  8   0.0142   -345.70     0.06     -31.26    -0.26
  9   0.1424  -2545.22    -0.03    -344.55     0.08
 10   0.1425  -2546.29     0.07    -344.98     0.02
 11   0.1451  -2567.03    -0.03    -351.85    -0.03
 12   0.9832   5263.21 (  -0.23)  -1956.14 (   0.71)
 13   0.9833   5260.54 (  -0.32)  -1956.46 (   0.61)
 14   0.9834   5258.11 (  -0.23)  -1956.53 (   0.75)
 15   1.9413  11278.61    -0.01   -3899.78    -0.02
 16   1.9415  11272.41    -0.07   -3900.31    -0.05
 17   1.9440  11208.63    -0.01   -3905.22     0.07
 18   1.9443  11202.53     0.19   -3905.53     0.27
 19   2.9080  17137.08    -0.07   -5895.83     0.01
 20   2.9081  17134.40     0.04   -5895.98     0.11
 21   2.9192  16867.68    -0.02   -5919.47     0.00
 22   2.9193  16866.15     0.04   -5919.73    -0.13
 23   2.9193  16864.48    -0.06   -5919.92    -0.18

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.

05LC54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        66.867    66.995    66.740
ecceobj         0.461     0.462     0.459
incobj         22.502    22.502    22.503
qmin           35.317    35.260    34.959
qmax          100.817   101.396   101.368
amean          67.163    67.496    67.162
amin           66.130    66.640    66.005
amax           68.480    68.673    68.504
emean           0.451     0.460     0.463
emin            0.431     0.442     0.449
emax            0.473     0.477     0.480
imean          21.975    21.478    20.961
imin           20.729    20.723    20.289
imax           22.915    22.484    21.658
excite_mean     0.586     0.588     0.585
fracstop        1.000     1.000     1.000
cjmean          2.921     2.921     2.921

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       155.9     210.8     192.5
kozaiamp        180.0     180.0     180.0