Orbit Fit and Astrometric record for 01FU185

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: 01FU185   
# Created Wed Feb 20 02:08:12 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    4 observations of    4
# Arc:  56.86d
# First observation: 2001/03/26
#  Last observation: 2001/05/22
# Chi-squared of fit:    24.81 DOF:    2 RMS:  0.44
# Min/Max residuals:    -0.67    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.953371E-05  3.159962E-02  4.815468E-06  1.362283E-02  2.978552E-02 -1.856196E-04
# Covariance matrix:
  9.3396E-11  1.2279E-07 -2.4272E-12 -4.3237E-09  2.2380E-08 -2.5262E-07
  1.2279E-07  1.6272E-04 -3.2172E-09 -5.7309E-06  2.9654E-05 -3.3538E-04
 -2.4272E-12 -3.2172E-09  7.9283E-13  1.0900E-10 -5.8568E-10  6.8027E-09
 -4.3237E-09 -5.7309E-06  1.0900E-10  2.0258E-07 -1.0433E-06  1.2113E-05
  2.2380E-08  2.9654E-05 -5.8568E-10 -1.0433E-06  5.4060E-06 -6.0626E-05
 -2.5262E-07 -3.3538E-04  6.8027E-09  1.2113E-05 -6.0626E-05  8.2492E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.465078 -175.119167   -0.017563   -0.060716   -1.000121  2451994.727223
# Heliocentric elements and errors
Epoch:              2451994.5000  =  2001/03/26
Mean Anomaly:          359.48852 +/-    80.763
Argument of Peri:      352.29023 +/-   113.226
Long of Asc Node:      192.64186 +/-     2.829
Inclination:            23.58737 +/-    30.369
Eccentricity:         0.16656297 +/-    1.3275
Semi-Major Axis:     41.47738592 +/-   26.5144
Time of Perihelion: 2452133.1238 +/-   95954.4
Perihelion:          34.56878932 +/-   59.3293
Aphelion:            48.38598252 +/-   63.1534
Period (y)              267.1316 +/-    256.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.38331029 +/-    4.9447
Ecliptic Y           -2.94951444 +/-    0.4218
Ecliptic Z           -2.02900018 +/-    0.3004
Ecliptic XDOT         0.00018035 +/-    0.0037
Ecliptic YDOT        -0.00289618 +/-    0.0015
Ecliptic ZDOT         0.00125113 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   34.56918541 +/-    4.9182
Geocenter to KBO     33.57338900 +/-    4.9718
# Hcoef:  9.00

The following table shows the complete astrometric record for 01FU185. 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 (01FU185) followed by the observatory code and reference code for the source of the astrometry.

2001 03  26.22648  12 12 24.21   -05 07 10.6   25.3R 01FU185   695  Cd1722      
2001 03  26.33227  12 12 23.69   -05 07 07.5         01FU185   695  Cd1722      
2001 05  21.99523  12 08 33.40   -04 31 28.2   22.8R 01FU185   807  Cd1722      
2001 05  22.08429  12 08 33.16   -04 31 25.8         01FU185   807  Cd1722      

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     0.68
  2   0.0003      0.00     0.28       0.00    -0.67
  3   0.1554      0.00     0.34       0.00     0.01
  4   0.1557      0.00    -0.38       0.00     0.00

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.

01FU185    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        41.328    41.328    41.328
ecceobj         0.164     0.164     0.164
incobj         23.613    23.613    23.613
qmin           32.907    32.668    33.028
qmax           51.087    51.051    50.650
amean          41.672    41.602    41.631
amin           41.208    41.184    41.206
amax           42.250    42.118    42.092
emean           0.184     0.185     0.180
emin            0.159     0.160     0.150
emax            0.209     0.215     0.205
imean          23.438    23.387    23.496
imin           22.651    22.445    22.655
imax           24.326    24.289    24.357
excite_mean     0.438     0.438     0.437
fracstop        1.000     1.000     1.000
cjmean          2.844     2.844     2.845

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       171.7     174.0     173.2
kozaiamp        179.9     180.0     180.0