Orbit Fit and Astrometric record for 06QH181

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: 06QH181   
# Created Mon Nov 24 02:38:08 2014
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   15
# Arc:   7.21y
# First observation: 2006/08/21
#  Last observation: 2013/11/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000036   0.006554   0.000002   0.002254   0.012196   0.000000
# Chi-squared of fit:    21.98 DOF:   20 RMS:  0.23
# Min/Max residuals:    -0.37    0.51
# Exact a, adot, b, bdot, g, gdot:
  9.358215E-06  6.609587E-03  3.390877E-06  2.275587E-03  1.229952E-02  3.008821E-03
# Covariance matrix:
  3.3419E-13  3.1940E-13 -3.0185E-14  1.3062E-13  5.3375E-13  8.0557E-12
  3.1940E-13  2.9993E-12 -2.8135E-13  1.1054E-12  3.2294E-12  6.8334E-11
 -3.0185E-14 -2.8135E-13  2.3301E-13 -1.3517E-13 -2.9896E-13 -6.4312E-12
  1.3062E-13  1.1054E-12 -1.3517E-13  4.1922E-13  1.1960E-12  2.5272E-11
  5.3375E-13  3.2294E-12 -2.9896E-13  1.1960E-12  3.7664E-12  7.3906E-11
  8.0557E-12  6.8334E-11 -6.4312E-12  2.5272E-11  7.3906E-11  1.5623E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.252149   65.111339    1.005357    0.006903    0.119111  2453968.867764
# Heliocentric elements and errors
Epoch:              2453960.5000  =  2006/08/13
Mean Anomaly:           98.70256 +/-     0.662
Argument of Peri:      209.74945 +/-     0.389
Long of Asc Node:       73.80758 +/-     0.001
Inclination:            19.19750 +/-     0.001
Eccentricity:         0.43429361 +/-    0.0023
Semi-Major Axis:     66.62367801 +/-    0.1657
Time of Perihelion: 2399501.8023 +/-     303.6
Perihelion:          37.68944067 +/-    0.1782
Aphelion:            95.55791535 +/-    0.2819
Period (y)              543.8149 +/-      2.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.02027818 +/-    0.0054
Ecliptic Y           73.09979040 +/-    0.0116
Ecliptic Z           -4.61214275 +/-    0.0007
Ecliptic XDOT        -0.00103660 +/-    0.0000
Ecliptic YDOT         0.00124694 +/-    0.0000
Ecliptic ZDOT         0.00046769 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   81.18664361 +/-    0.0107
Geocenter to KBO     81.30401689 +/-    0.0128
# Hcoef:  4.30

The following table shows the complete astrometric record for 06QH181. 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 (06QH181) followed by the observatory code and reference code for the source of the astrometry.

2006 08  21.36701  04 15 09.34   +17 57 03.8   22.3R 06QH181   807  Cs5502      
2006 08  22.35191  04 15 09.90   +17 57 03.8         06QH181   807  Cs5502      
2006 08  23.34016  04 15 10.42   +17 57 04.3         06QH181   807  Cs5502      
2006 10  19.38669  04 14 19.45   +17 54 01.9   22.9R 06QH181   695  Ct0530      
2006 10  19.49486  04 14 19.25   +17 54 01.9         06QH181   695  Ct0530      
2006 10  20.39130  04 14 17.29   +17 53 56.1         06QH181   695  Ct0530      
2006 10  20.49409  04 14 17.07   +17 53 55.4         06QH181   695  Ct0530      
2008 03  04.31389  04 11 37.98   +18 00 11.4         06QH181   568  Cy4051      
2008 03  05.22922  04 11 38.65   +18 00 16.1         06QH181   568  Cy4051      
2008 03  05.31374  04 11 38.69   +18 00 16.2         06QH181   568  Cy4051      
2013 10  06.50390  04 24 59.47   +19 15 13.3   23.4R 06QH181   695  C~0ze1      
2013 10  07.33701  04 24 58.15   +19 15 09.8         06QH181   695  C~0ze1      
2013 10  07.46039  04 24 57.97   +19 15 09.5         06QH181   695  C~0ze1      
2013 11  06.35973  04 23 54.56   +19 12 48.6   23.9R 06QH181   G37  C~0yjC      
2013 11  06.44820  04 23 54.33   +19 12 47.8         06QH181   G37  C~0yjC      

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    -0.18       0.00    -0.10
  2   0.0027      7.87    -0.33      -1.41    -0.37
  3   0.0054     15.26    -0.26      -2.22    -0.03
  4   0.1616   -732.95     0.22     -53.36     0.02
  5   0.1619   -735.76 (   0.83)    -52.85 (   0.54)
  6   0.1643   -764.33     0.27     -53.60     0.02
  7   0.1646   -767.54     0.36     -53.74    -0.09
  8   1.5358  -2934.05 (  -0.21)    722.35 (   0.89)
  9   1.5383  -2923.80     0.12     725.25     0.51
 10   1.5385  -2923.22    -0.21     725.24     0.20
 11   7.1270   9068.63     0.35    3203.67     0.03
 12   7.1293   9049.58    -0.15    3203.24    -0.27
 13   7.1296   9047.01     0.15    3203.36    -0.16
 14   7.2115   8136.31    -0.15    3210.67     0.28
 15   7.2117   8132.95    -0.20    3210.41    -0.04

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.

06QH181    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        67.439    67.439    67.438
ecceobj         0.429     0.429     0.429
incobj         19.051    19.051    19.051
qmin           37.072    37.119    37.081
qmax           99.107    99.134    98.981
amean          67.160    67.171    67.159
amin           66.189    66.131    66.184
amax           68.449    68.474    68.429
emean           0.433     0.430     0.434
emin            0.415     0.412     0.416
emax            0.449     0.448     0.448
imean          17.812    18.117    17.852
imin           17.200    17.270    17.393
imax           18.581    19.016    18.707
excite_mean     0.530     0.531     0.531
fracstop        1.000     1.000     1.000
cjmean          3.012     3.012     3.011

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       198.1     193.6     180.1
kozaiamp        179.9     180.0     180.0