Orbit Fit and Astrometric record for 03QM91

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: 03QM91    
# Created Thu Dec 14 02:37:16 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  57.87d
# First observation: 2003/08/25
#  Last observation: 2003/10/22
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.029552   0.000000   0.001243   0.025486   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     1.15 DOF:    5 RMS:  0.08
# Min/Max residuals:    -0.15    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.086600E-05  1.477981E-02  8.136735E-07  1.276978E-03  2.301116E-02 -1.745572E-02
# Covariance matrix:
  2.2713E-10  3.3367E-07  3.9796E-12 -7.0698E-10  5.6711E-08  1.4095E-07
  3.3367E-07  4.9137E-04  5.8605E-09 -1.0415E-06  8.3505E-05  2.0551E-04
  3.9796E-12  5.8605E-09  5.6632E-13 -1.5604E-11  9.9595E-10  2.4494E-09
 -7.0698E-10 -1.0415E-06 -1.5604E-11  2.2593E-09 -1.7697E-07 -4.2700E-07
  5.6711E-08  8.3505E-05  9.9595E-10 -1.7697E-07  1.4192E-05  3.5062E-05
  1.4095E-07  2.0551E-04  2.4494E-09 -4.2700E-07  3.5062E-05  1.2746E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.860736   -7.466299    0.362537   -0.014177   -0.948054  2452876.866633
# Heliocentric elements and errors
Epoch:              2452870.5000  =  2003/08/19
Mean Anomaly:          322.25308 +/-    37.295
Argument of Peri:      125.30611 +/-    90.327
Long of Asc Node:        1.56768 +/-    14.470
Inclination:             5.09234 +/-     7.704
Eccentricity:         0.77243189 +/-    0.6326
Semi-Major Axis:     50.12632047 +/-   27.3182
Time of Perihelion: 2466462.2749 +/-    7542.0
Perihelion:          11.40715205 +/-   32.3125
Aphelion:            88.84548889 +/-   57.8784
Period (y)              354.9008 +/-    290.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.97411196 +/-    7.0532
Ecliptic Y           -6.12490112 +/-    0.9249
Ecliptic Z           -0.65280955 +/-    0.1069
Ecliptic XDOT        -0.00183351 +/-    0.0019
Ecliptic YDOT         0.00200740 +/-    0.0021
Ecliptic ZDOT         0.00018329 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   44.40341312 +/-    6.9862
Geocenter to KBO     43.45717414 +/-    7.1144
# Hcoef:  4.96

The following table shows the complete astrometric record for 03QM91. 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 (03QM91) followed by the observatory code and reference code for the source of the astrometry.

2003 08  25.36589  23 33 56.24   -03 45 12.8   20.0R 03QM91    807  Ci4137      
2003 08  26.28761  23 33 52.41   -03 45 37.2         03QM91    807  Ci4137      
2003 08  26.39198  23 33 51.98   -03 45 39.9         03QM91    807  Ci4137      
2003 10  22.14651  23 29 50.38   -04 10 37.4   22.2R 03QM91    695  Cj4699      
2003 10  22.23381  23 29 50.07   -04 10 39.4         03QM91    695  Cj4699      

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    -0.15       0.00     0.01
  2   0.0025    -62.30    -0.03       0.24    -0.00
  3   0.0028    -69.28     0.18       0.31    -0.01
  4   0.1582  -3982.61     0.01      51.29     0.09
  5   0.1584  -3987.67    -0.01      51.28    -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.

03QM91    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0