Orbit Fit and Astrometric record for 12OL6

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: 12OL6     
# Created Thu Oct 19 01:38:10 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   1.05y
# First observation: 2012/07/22
#  Last observation: 2013/08/11
Preliminary a, adot, b, bdot, g, gdot:
  -0.000008   0.012654  -0.000002  -0.001723   0.017017   0.000000
# Chi-squared of fit:    72.40 DOF:   16 RMS:  0.45
# Min/Max residuals:    -1.00    0.75
# Exact a, adot, b, bdot, g, gdot:
  1.160242E-05  1.261698E-02 -5.239637E-06 -1.715479E-03  1.712084E-02 -3.573703E-03
# Covariance matrix:
  4.3820E-13  3.0772E-13  1.2327E-14 -1.1485E-13  7.1822E-13  6.0315E-11
  3.0772E-13  7.5403E-12  9.1752E-14 -1.1604E-12  4.1729E-12  6.1860E-10
  1.2327E-14  9.1752E-14  2.5197E-13 -2.9359E-13  6.7562E-14  8.5008E-12
 -1.1485E-13 -1.1604E-12 -2.9359E-13  8.5658E-13 -7.4624E-13 -1.0521E-10
  7.1822E-13  4.1729E-12  6.7562E-14 -7.4624E-13  3.4881E-12  3.9542E-10
  6.0315E-11  6.1860E-10  8.5008E-12 -1.0521E-10  3.9542E-10  5.6041E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.261299  -47.151894    0.232479    0.073512   -0.987063  2456130.890288
# Heliocentric elements and errors
Epoch:              2456130.5000  =  2012/07/22
Mean Anomaly:          265.32031 +/-     2.668
Argument of Peri:      277.14175 +/-     1.719
Long of Asc Node:      160.86615 +/-     0.012
Inclination:             8.80155 +/-     0.003
Eccentricity:         0.29358491 +/-    0.0127
Semi-Major Axis:     53.87231323 +/-    0.4299
Time of Perihelion: 2494114.5438 +/-     969.0
Perihelion:          38.05621494 +/-    0.7472
Aphelion:            69.68841152 +/-    0.8806
Period (y)              395.4182 +/-      4.73
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.11664507 +/-    0.0043
Ecliptic Y          -43.58547855 +/-    0.0047
Ecliptic Z            4.33979415 +/-    0.0005
Ecliptic XDOT         0.00110008 +/-    0.0000
Ecliptic YDOT         0.00177799 +/-    0.0000
Ecliptic ZDOT        -0.00031592 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   59.39590024 +/-    0.0045
Geocenter to KBO     58.40836277 +/-    0.0064
# Hcoef:  7.27

The following table shows the complete astrometric record for 12OL6. 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 (12OL6) followed by the observatory code and reference code for the source of the astrometry.

2012 07  22.38951  20 56 18.766  -12 51 53.89        12OL6     568  C~1x85      
2012 07  22.46926  20 56 18.503  -12 51 55.08        12OL6     568  C~1x85      
2012 07  22.54526  20 56 18.236  -12 51 56.11  24.8r 12OL6     568  C~1x85      
2012 08  19.19240  20 54 43.884  -12 59 04.28        12OL6     304  C~1x85      
2012 08  19.20945  20 54 43.798  -12 59 04.41        12OL6     304  C~1x85      
2012 10  12.02055  20 52 38.284  -13 11 19.30        12OL6     304  C~1x85      
2012 10  12.15351  20 52 38.136  -13 11 20.06        12OL6     304  C~1x85      
2013 07  07.32825  21 00 05.785  -12 42 06.39        12OL6     304  C~1x85      
2013 07  07.38166  21 00 05.548  -12 42 07.08        12OL6     304  C~1x85      
2013 08  10.30765  20 58 12.637  -12 50 14.18        12OL6     304  C~1x85      
2013 08  11.24409  20 58 09.412  -12 50 29.42        12OL6     304  C~1x85      

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     0.01       0.00     0.75
  2   0.0002     -4.03     0.14      -0.08     0.66
  3   0.0004     -8.06     0.06       0.02     0.73
  4   0.0761  -1452.13    -0.13     -29.70    -0.65
  5   0.0762  -1453.37    -0.49     -29.48    -0.40
  6   0.2235  -3418.86     0.29    -231.76    -1.00
  7   0.2239  -3421.15     0.16    -231.90    -0.51
  8   0.9581   3353.13     0.66    -363.21    -0.07
  9   0.9582   3349.61    -0.40    -362.89     0.17
 10   1.0511   1627.25    -0.06    -367.79     0.21
 11   1.0537   1577.71    -0.22    -369.25     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.

12OL6    quality flag:1

Type:     12:5EEEEEE    5:2EEE  SCATNEAR

axisobj        53.958    55.373    52.844
ecceobj         0.294     0.332     0.257
incobj          8.787     8.791     8.784
qmin           37.588    35.843    38.476
qmax           71.265    76.264    67.724
amean          53.973    55.463    52.784
amin           53.344    54.728    52.225
amax           54.713    56.378    53.423
emean           0.292     0.334     0.256
emin            0.280     0.318     0.243
emax            0.303     0.353     0.269
imean           8.241     7.387     8.271
imin            7.897     5.921     7.930
imax            8.639     8.231     8.779
excite_mean     0.325     0.358     0.293
fracstop        1.000     1.000     1.000
cjmean          3.092     3.080     3.104

libcent 0       181.9     178.8    -180.0
libamp  0       149.8     107.0    -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       179.9     285.2     176.2
kozaiamp        180.0      27.9     180.0