Orbit Fit and Astrometric record for MA67393

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: MA67393   
# Created Thu Apr 26 01:38:27 2018
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:  56.06d
# First observation: 2015/02/18
#  Last observation: 2015/04/15
Preliminary a, adot, b, bdot, g, gdot:
  -0.000014   0.047145  -0.000005   0.004573   0.030471   0.000000
# Chi-squared of fit:     2.57 DOF:   16 RMS:  0.09
# Min/Max residuals:    -0.24    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.686268E-05  2.989124E-02  2.964244E-06  4.585137E-03  2.763313E-02  3.899627E-03
# Covariance matrix:
  6.4409E-13  3.0787E-10 -1.0593E-13 -1.6895E-13  5.1441E-11  6.2473E-11
  3.0787E-10  6.1884E-07 -2.0289E-10 -7.3463E-10  1.0034E-07 -4.5230E-07
 -1.0593E-13 -2.0289E-10  4.5603E-13 -3.0162E-12 -3.2939E-11  1.3672E-10
 -1.6895E-13 -7.3463E-10 -3.0162E-12  4.2495E-11 -1.1711E-10  1.1279E-09
  5.1441E-11  1.0034E-07 -3.2939E-11 -1.1711E-10  1.6282E-08 -7.0427E-08
  6.2473E-11 -4.5230E-07  1.3672E-10  1.1279E-09 -7.0427E-08  1.1854E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.427913  176.675981    0.457302    0.037125   -0.872116  2457071.795258
# Heliocentric elements and errors
Epoch:              2457070.5000  =  2015/02/17
Mean Anomaly:           31.32540 +/-    10.272
Argument of Peri:      330.14429 +/-    15.671
Long of Asc Node:      160.88789 +/-     0.380
Inclination:             9.04045 +/-     0.218
Eccentricity:         0.18741352 +/-    0.0291
Semi-Major Axis:     43.49622409 +/-    1.7281
Time of Perihelion: 2447953.1244 +/-    2939.8
Perihelion:          35.34444381 +/-    1.8899
Aphelion:            51.64800436 +/-    2.4105
Period (y)              286.8703 +/-     17.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.94310796 +/-    0.1667
Ecliptic Y            2.60354434 +/-    0.0097
Ecliptic Z            1.53313211 +/-    0.0071
Ecliptic XDOT        -0.00054153 +/-    0.0001
Ecliptic YDOT        -0.00294091 +/-    0.0001
Ecliptic ZDOT         0.00047034 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.06645604 +/-    0.1661
Geocenter to KBO     36.18844493 +/-    0.1671
# Hcoef:  7.78

The following table shows the complete astrometric record for MA67393. 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 (MA67393) followed by the observatory code and reference code for the source of the astrometry.

2015 02  18.29448  11 51 39.778  +03 32 58.06  22.7R MA67393   695              
2015 02  18.38762  11 51 39.384  +03 33 01.27        MA67393   695              
2015 02  18.47664  11 51 38.989  +03 33 03.99        MA67393   695              
2015 03  16.27118  11 49 38.313  +03 47 50.61  23.2R MA67393   G37              
2015 03  16.34354  11 49 37.948  +03 47 53.30        MA67393   G37              
2015 03  23.16519  11 49 04.237  +03 51 50.50  23.3R MA67393   695              
2015 03  23.22929  11 49 03.919  +03 51 52.63        MA67393   695              
2015 03  23.28872  11 49 03.612  +03 51 54.65        MA67393   695              
2015 04  15.20534  11 47 17.068  +04 04 00.37  23.2R MA67393   695              
2015 04  15.28229  11 47 16.757  +04 04 02.37        MA67393   695              
2015 04  15.35550  11 47 16.447  +04 04 04.45        MA67393   695              

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     0.05       0.00    -0.07
  2   0.0003     -6.69     0.04       0.60     0.14
  3   0.0005    -13.20    -0.09       0.74    -0.07
  4   0.0711  -2023.28     0.04      96.01    -0.07
  5   0.0713  -2029.36    -0.04      96.31     0.06
  6   0.0900  -2586.68     0.00     113.55     0.07
  7   0.0902  -2591.89     0.06     113.61     0.01
  8   0.0903  -2596.91    -0.06     113.64    -0.07
  9   0.1531  -4348.83    -0.24     146.87    -0.01
 10   0.1533  -4353.90     0.10     146.86    -0.03
 11   0.1535  -4358.99     0.14     146.93     0.03

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.

MA67393    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        43.124    50.097    38.300
ecceobj         0.182     0.280     0.154
incobj          9.074     8.424     9.806
qmin           33.883    35.096    31.571
qmax           53.471    66.634    46.458
amean          43.323    50.398    38.123
amin           42.890    49.835    37.177
amax           43.899    51.121    39.424
emean           0.184     0.287     0.133
emin            0.149     0.269     0.074
emax            0.219     0.304     0.185
imean           9.011     7.322     8.009
imin            6.064     6.470     6.032
imax           11.412     8.411     9.698
excite_mean     0.242     0.314     0.194
fracstop        1.000     1.000     1.000
cjmean          3.022     3.055     2.998

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       176.6     173.2     180.6
kozaiamp        180.0     180.0     179.9