Orbit Fit and Astrometric record for 06QP180

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: 06QP180   
# Created Tue Oct 24 01:37:39 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   47 observations of   47
# Arc:  12.18y
# First observation: 2002/07/22
#  Last observation: 2014/09/27
# Chi-squared of fit:   105.53 DOF:   88 RMS:  0.26
# Min/Max residuals:    -1.83    0.78
# Exact a, adot, b, bdot, g, gdot:
  3.457726E-05  1.690274E-01 -1.306143E-06  2.820075E-03  7.891086E-02  3.210151E-02
# Covariance matrix:
  3.5311E-13 -9.8218E-14  3.7595E-15 -1.3537E-15  8.3419E-15 -2.7484E-14
 -9.8218E-14  7.1304E-14 -1.2170E-15  1.5431E-15  7.8618E-14  2.1236E-14
  3.7595E-15 -1.2170E-15  1.9742E-13 -3.3303E-14  9.7725E-16 -5.7086E-16
 -1.3537E-15  1.5431E-15 -3.3303E-14  7.2152E-15  2.0960E-15  4.9714E-16
  8.3419E-15  7.8618E-14  9.7725E-16  2.0960E-15  1.8232E-13  2.0193E-14
 -2.7484E-14  2.1236E-14 -5.7086E-16  4.9714E-16  2.0193E-14  7.4297E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.195794  -44.200053    0.291510    0.088504   -0.974135  2452477.850013
# Heliocentric elements and errors
Epoch:              2452478.5000  =  2002/07/23
Mean Anomaly:            3.96413 +/-    31.456
Argument of Peri:       52.63436 +/-     0.001
Long of Asc Node:      237.79620 +/-     0.000
Inclination:             4.95467 +/-     0.000
Eccentricity:         0.65187613 +/-    0.0000
Semi-Major Axis:     37.83913369 +/-    0.0069
Time of Perihelion: 2451542.3280 +/-    7428.8
Perihelion:          13.17270570 +/-    0.0025
Aphelion:            62.50556167 +/-    0.0114
Period (y)              232.7662 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            9.54591166 +/-    0.0000
Ecliptic Y           -9.68384897 +/-    0.0000
Ecliptic Z            1.14763924 +/-    0.0000
Ecliptic XDOT         0.00486952 +/-    0.0000
Ecliptic YDOT         0.00343473 +/-    0.0000
Ecliptic ZDOT         0.00019852 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.64611620 +/-    0.0000
Geocenter to KBO     12.67247294 +/-    0.0000
# Hcoef:  9.86

The following table shows the complete astrometric record for 06QP180. 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 (06QP180) followed by the observatory code and reference code for the source of the astrometry.

2002 07  22.34927  21 06 45.70   -11 07 59.5   21. R 06QP180   644  Cy2155      
2002 07  22.38387  21 06 45.34   -11 08 00.5         06QP180   644  Cy2155      
2002 08  16.30486  21 01 55.11   -11 28 01.3   21. R 06QP180   644  Cy2155      
2002 08  17.28709  21 01 43.82   -11 28 53.0   21. R 06QP180   644  Cy2155      
2006 08  28.25805  23 06 42.75   -00 17 36.7   22.4  06QP180   705  C62217      
2006 08  28.25888  23 06 42.74   -00 17 36.7   23.7  06QP180   705  C62217      
2006 09  11.26639  23 04 21.62   -00 32 34.2   21.9  06QP180   705  C62217      
2006 09  11.26971  23 04 21.58   -00 32 34.5   22.7  06QP180   705  C62217      
2006 09  18.26234  23 03 11.64   -00 40 26.5   21.9  06QP180   705  C62217      
2006 09  18.26566  23 03 11.60   -00 40 26.8   23.2  06QP180   705  C62217      
2006 09  20.23075  23 02 52.33   -00 42 40.4   22.2  06QP180   705  C62217      
2006 09  20.23407  23 02 52.31   -00 42 40.7   23.4  06QP180   705  C62217      
2006 09  29.28994  23 01 26.99   -00 52 51.9   21.9  06QP180   705  C62217      
2006 09  29.29326  23 01 26.94   -00 52 52.4   23.0  06QP180   705  C62217      
2006 10  01.21351  23 01 09.86   -00 54 59.4   22.1  06QP180   705  C62217      
2006 10  01.21683  23 01 09.84   -00 54 59.7   22.9  06QP180   705  C62217      
2006 10  03.27779  23 00 51.90   -00 57 14.8   22.1  06QP180   705  C62217      
2006 10  03.27863  23 00 51.90   -00 57 14.7   23.2  06QP180   705  C62217      
2006 10  12.21284  22 59 40.50   -01 06 36.4   22.5  06QP180   705  C62217      
2006 10  12.21367  22 59 40.49   -01 06 36.4   23.9  06QP180   705  C62217      
2006 10  14.26195  22 59 25.72   -01 08 38.6   22.2  06QP180   705  C62217      
2006 10  14.26278  22 59 25.71   -01 08 38.8   23.4  06QP180   705  C62217      
2006 10  20.20259  22 58 46.80   -01 14 14.9   22.3  06QP180   705  C62217      
2006 10  20.20342  22 58 46.80   -01 14 14.9   23.7  06QP180   705  C62217      
2007 07  12.39105  23 36 16.75   +02 28 23.2         06QP180   304  C~00AI      
2007 07  12.44698  23 36 16.62   +02 28 22.9         06QP180   304  C~00AI      
2007 10  13.29157  23 24 19.81   +01 15 46.4   22.4  06QP180   705  Cy0771      
2007 10  13.29489  23 24 19.77   +01 15 45.9   23.4  06QP180   705  Cy0771      
2007 10  15.29648  23 24 04.16   +01 13 41.2   22.3  06QP180   705  Cy0771      
2007 10  15.29897  23 24 04.13   +01 13 40.8   23.4  06QP180   705  Cy0771      
2007 10  20.28110  23 23 27.60   +01 08 40.3   22.2  06QP180   705  Cy0771      
2007 10  20.28442  23 23 27.59   +01 08 40.0   23.1  06QP180   705  Cy0771      
2007 11  04.20314  23 22 01.95   +00 55 36.2   22.7  06QP180   705  Cy0771      
2007 11  04.20397  23 22 01.96   +00 55 36.1   24.0  06QP180   705  Cy0771      
2007 11  07.16112  23 21 49.77   +00 53 26.0   22.5  06QP180   705  Cy0771      
2007 11  07.16444  23 21 49.73   +00 53 25.9   23.7  06QP180   705  Cy0771      
2007 11  09.20262  23 21 42.35   +00 52 01.8   22.4  06QP180   705  Cy0771      
2007 11  09.20511  23 21 42.34   +00 52 01.9   23.7  06QP180   705  Cy0771      
2007 11  11.19820  23 21 35.92   +00 50 44.2   22.5  06QP180   705  Cy0771      
2007 11  11.20152  23 21 35.93   +00 50 44.0   23.8  06QP180   705  Cy0771      
2007 11  12.20034  23 21 33.01   +00 50 07.0   22.5  06QP180   705  Cy0771      
2007 11  12.20366  23 21 33.01   +00 50 06.8   23.6  06QP180   705  Cy0771      
2008 10  02.205191 23 48 24.67   +03 36 41.7   22.1V 06QP180   645  C~1SL8      
2008 10  02.206020 23 48 24.66   +03 36 41.6   21.7V 06QP180   645  C~1SL8      
2008 10  02.208508 23 48 24.65   +03 36 41.5   24.4V 06QP180   645  C~1SL8      
2014 09  27.42812  01 29 52.27   +12 27 13.3   23.2R 06QP180   695  C~1LJh      
2014 09  27.48193  01 29 51.84   +12 27 10.9         06QP180   695  C~1LJh      

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    -1.83
  2   0.0001      0.00     0.40       0.00     0.78
  3   0.0683      0.00     0.26       0.00    -0.27
  4   0.0710      0.00    -0.10       0.00    -0.20
  5   4.1011      0.00     0.03       0.00     0.15
  6   4.1011      0.00     0.01       0.00     0.20
  7   4.1394      0.00     0.07       0.00    -0.07
  8   4.1394      0.00    -0.01       0.00    -0.15
  9   4.1586      0.00     0.16       0.00     0.06
 10   4.1586      0.00     0.06       0.00    -0.02
 11   4.1639      0.00     0.17       0.00     0.02
 12   4.1640      0.00     0.37       0.00    -0.06
 13   4.1887      0.00     0.12       0.00     0.12
 14   4.1888      0.00    -0.17       0.00    -0.16
 15   4.1940      0.00     0.14       0.00     0.06
 16   4.1940      0.00     0.29       0.00    -0.02
 17   4.1997      0.00     0.11       0.00    -0.07
 18   4.1997      0.00     0.22       0.00     0.09
 19   4.2241      0.00     0.15       0.00     0.17
 20   4.2241      0.00     0.09       0.00     0.22
 21   4.2297      0.00     0.08       0.00     0.10
 22   4.2297      0.00     0.02       0.00    -0.05
 23   4.2460      0.00    -0.08       0.00     0.11
 24   4.2460      0.00    -0.01       0.00     0.16
 25   4.9721      0.00     0.02       0.00     0.26
 26   4.9722      0.00    -0.01       0.00    -0.09
 27   5.2264      0.00     0.09       0.00     0.25
 28   5.2264      0.00    -0.10       0.00    -0.04
 29   5.2319      0.00     0.27       0.00     0.25
 30   5.2319      0.00     0.11       0.00     0.00
 31   5.2455      0.00     0.07       0.00     0.10
 32   5.2455      0.00     0.28       0.00    -0.01
 33   5.2864      0.00     0.02       0.00    -0.04
 34   5.2864      0.00     0.23       0.00    -0.10
 35   5.2945      0.00     0.12       0.00    -0.09
 36   5.2945      0.00    -0.28       0.00    -0.05
 37   5.3001      0.00     0.02       0.00    -0.09
 38   5.3001      0.00     0.01       0.00     0.11
 39   5.3055      0.00    -0.11       0.00     0.01
 40   5.3056      0.00     0.20       0.00    -0.07
 41   5.3083      0.00    -0.02       0.00     0.05
 42   5.3083      0.00     0.13       0.00    -0.03
 43   6.1981      0.00     0.27       0.00    -0.21
 44   6.1981      0.00     0.23       0.00    -0.25
 45   6.1981      0.00     0.43       0.00    -0.19
 46  12.1837      0.00     0.05       0.00     0.47
 47  12.1838      0.00    -0.20       0.00     0.42

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.

06QP180    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        38.233    38.233    38.233
ecceobj         0.655     0.655     0.655
incobj          4.955     4.955     4.955
qmin           13.011    13.011    13.011
qmax           64.647    65.253    65.444
amean          37.466    38.311    38.334
amin           35.828    37.592    37.582
amax           39.011    39.432    39.456
emean           0.640     0.650     0.654
emin            0.623     0.640     0.646
emax            0.659     0.659     0.663
imean           7.553     7.284     7.860
imin            6.092     6.092     6.092
imax            8.145     7.993     8.967
excite_mean     0.654     0.662     0.668
fracstop        0.013     0.006     0.010
cjmean          2.504     2.488     2.479

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        82.4      65.8      77.8
kozaiamp         31.4      14.6      25.2