Orbit Fit and Astrometric record for 01QH298

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: 01QH298   
# Created Mon Dec 18 02:37:08 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   17
# Arc:  15.13y
# First observation: 2000/08/27
#  Last observation: 2015/10/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.001495   0.030787   0.000154  -0.002717   0.026605   0.000000
# Chi-squared of fit:    13.43 DOF:   24 RMS:  0.17
# Min/Max residuals:    -0.54    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.589854E-05  3.015343E-02 -2.239665E-06 -2.639648E-03  2.816349E-02  2.689625E-03
# Covariance matrix:
  8.3316E-13 -5.3924E-13 -6.1789E-14  4.9582E-14  2.9766E-13 -1.1254E-12
 -5.3924E-13  4.4360E-13  5.0856E-14 -4.1477E-14 -1.9285E-13  9.4182E-13
 -6.1789E-14  5.0856E-14  2.0649E-13 -1.9417E-14 -3.2181E-14  1.0940E-13
  4.9582E-14 -4.1477E-14 -1.9417E-14  5.9221E-15  2.0327E-14 -8.8671E-14
  2.9766E-13 -1.9285E-13 -3.2181E-14  2.0327E-14  5.8415E-13 -4.5809E-13
 -1.1254E-12  9.4182E-13  1.0940E-13 -8.8671E-14 -4.5809E-13  2.0131E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.551553   -8.891626    0.297027   -0.076523   -0.959329  2451783.798303
# Heliocentric elements and errors
Epoch:              2451780.5000  =  2000/08/24
Mean Anomaly:           40.27712 +/-     0.027
Argument of Peri:      172.02423 +/-     0.032
Long of Asc Node:      129.47482 +/-     0.001
Inclination:             6.71296 +/-     0.000
Eccentricity:         0.10992068 +/-    0.0001
Semi-Major Axis:     39.56230014 +/-    0.0061
Time of Perihelion: 2441611.5377 +/-       6.5
Perihelion:          35.21358533 +/-    0.0070
Aphelion:            43.91101496 +/-    0.0081
Period (y)              248.8459 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.88021280 +/-    0.0009
Ecliptic Y           -5.90817920 +/-    0.0002
Ecliptic Z           -2.81779446 +/-    0.0001
Ecliptic XDOT         0.00068318 +/-    0.0000
Ecliptic YDOT         0.00286424 +/-    0.0000
Ecliptic ZDOT        -0.00027639 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.47240351 +/-    0.0009
Geocenter to KBO     35.50695772 +/-    0.0010
# Hcoef:  8.10

The following table shows the complete astrometric record for 01QH298. 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 (01QH298) followed by the observatory code and reference code for the source of the astrometry.

2000 08  27.29756  23 34 33.27   -07 42 23.0   23.1R 01QH298   807  Ci2660      
2000 08  27.37107  23 34 32.92   -07 42 24.9         01QH298   807  Ci2660      
2001 08  19.31029  23 41 47.47   -07 04 52.0   22.2R 01QH298   807  Cd7926      
2001 08  19.39741  23 41 47.15   -07 04 54.9         01QH298   807  Cd7926      
2001 08  20.31973  23 41 43.14   -07 05 25.6         01QH298   807  Cd7926      
2001 08  20.40536  23 41 42.77   -07 05 28.4         01QH298   807  Cd7926      
2001 10  20.27095  23 36 54.07   -07 37 14.9   23.1R 01QH298   695  Ce0366      
2001 10  20.32825  23 36 53.84   -07 37 16.5         01QH298   695  Ce0366      
2001 10  21.15929  23 36 50.55   -07 37 34.3         01QH298   695  Ce0366      
2003 07  06.57258  23 56 37.51   -05 41 04.2   23.6R 01QH298   568  Ci2660      
2003 07  07.57455  23 56 36.94   -05 41 17.5         01QH298   568  Ci2660      
2015 10  10.286107 01 05 49.145  +00 11 28.27  23.8r 01QH298   568  C~2Re8      
2015 10  10.331184 01 05 48.916  +00 11 26.86  23.7r 01QH298   568  C~2Re8      
2015 10  10.374026 01 05 48.705  +00 11 25.51  23.7r 01QH298   568  C~2Re8      
2015 10  14.269016 01 05 29.476  +00 09 25.71  24.3g 01QH298   568  C~2Re8      
2015 10  14.311189 01 05 29.267  +00 09 24.44  24.4g 01QH298   568  C~2Re8      
2015 10  14.353950 01 05 29.061  +00 09 23.09  24.4g 01QH298   568  C~2Re8      

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     0.21       0.00     0.16
  2   0.0002     -5.53 (   0.50)      0.32 (   0.70)
  3   0.9774   6823.36    -0.19    -509.25     0.31
  4   0.9777   6817.82 (   0.61)   -510.00 (  -0.08)
  5   0.9802   6750.76    -0.08    -514.24     0.06
  6   0.9804   6744.59     0.03    -514.60     0.05
  7   1.1471   2043.38    -0.06    -548.67     0.13
  8   1.1472   2039.61    -0.13    -548.78    -0.20
  9   1.1495   1987.65     0.15    -545.65     0.14
 10   2.8563  21061.88     0.28   -1269.74    -0.54
 11   2.8591  21048.56    -0.22   -1278.46    -0.24
 12  15.1184  91794.95     0.01   -8422.28     0.03
 13  15.1185  91790.50    -0.05   -8422.06     0.04
 14  15.1186  91786.38     0.01   -8421.91    -0.00
 15  15.1293  91412.40    -0.05   -8405.05     0.05
 16  15.1294  91408.35    -0.01   -8404.83     0.05
 17  15.1295  91404.32     0.10   -8404.72    -0.06

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.

01QH298    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.639    39.658    39.621
ecceobj         0.112     0.112     0.111
incobj          6.709     6.709     6.709
qmin           34.242    34.267    34.251
qmax           45.068    45.227    45.264
amean          39.459    39.459    39.460
amin           39.057    39.067    39.063
amax           39.891    39.909    39.919
emean           0.112     0.112     0.113
emin            0.093     0.094     0.093
emax            0.131     0.133     0.134
imean           5.607     5.613     5.600
imin            4.847     4.849     4.830
imax            6.390     6.408     6.402
excite_mean     0.149     0.149     0.149
fracstop        1.000     1.000     1.000
cjmean          3.027     3.027     3.027

libcent 0       180.8     180.7     179.9
libamp  0        74.1      70.9      77.0
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       179.0     179.9     177.2
kozaiamp        180.0     179.9     179.9