Orbit Fit and Astrometric record for 01FT185

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: 01FT185   
# Created Tue Dec 12 02:37:10 2017
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   13
# Arc:  14.97y
# First observation: 2001/03/26
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000098   0.022585   0.000095  -0.007987   0.023872   0.000000
# Chi-squared of fit:    34.02 DOF:   20 RMS:  0.29
# Min/Max residuals:    -0.58    0.57
# Exact a, adot, b, bdot, g, gdot:
  1.398224E-05  2.232406E-02 -4.274316E-06 -7.899791E-03  2.375743E-02  1.692696E-03
# Covariance matrix:
  4.3612E-13 -1.2037E-13 -2.0840E-14  3.0918E-14  3.5912E-13 -2.5320E-13
 -1.2037E-13  2.4381E-13  5.3172E-14 -8.4956E-14  8.5047E-14  6.9007E-13
 -2.0840E-14  5.3172E-14  1.6224E-13 -3.1220E-14  2.4106E-14  1.5379E-13
  3.0918E-14 -8.4956E-14 -3.1220E-14  3.4353E-14 -4.2505E-14 -2.4629E-13
  3.5912E-13  8.5047E-14  2.4106E-14 -4.2505E-14  6.9673E-13  3.4179E-13
 -2.5320E-13  6.9007E-13  1.5379E-13 -2.4629E-13  3.4179E-13  2.0001E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.028030 -160.030390    0.241229   -0.017623   -0.972549  2451994.883983
# Heliocentric elements and errors
Epoch:              2451990.5000  =  2001/03/22
Mean Anomaly:           34.69227 +/-     0.033
Argument of Peri:      140.29732 +/-     0.042
Long of Asc Node:       16.81180 +/-     0.000
Inclination:            19.54447 +/-     0.000
Eccentricity:         0.10931207 +/-    0.0001
Semi-Major Axis:     47.08119822 +/-    0.0074
Time of Perihelion: 2440619.4673 +/-      10.5
Perihelion:          41.93465503 +/-    0.0082
Aphelion:            52.22774141 +/-    0.0095
Period (y)              323.0572 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.54736785 +/-    0.0014
Ecliptic Y          -14.47386922 +/-    0.0005
Ecliptic Z           -0.75534567 +/-    0.0000
Ecliptic XDOT         0.00070232 +/-    0.0000
Ecliptic YDOT        -0.00247614 +/-    0.0000
Ecliptic ZDOT        -0.00091355 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.05987084 +/-    0.0013
Geocenter to KBO     42.09210162 +/-    0.0015
# Hcoef:  7.86

The following table shows the complete astrometric record for 01FT185. 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 (01FT185) followed by the observatory code and reference code for the source of the astrometry.

2001 03  26.38324  13 12 10.83   -08 45 34.5   24.5R 01FT185   695  Cd1722      
2001 03  26.46289  13 12 10.47   -08 45 32.6         01FT185   695  Cd1722      
2001 05  22.03645  13 08 12.53   -08 25 36.7   22.9R 01FT185   807  Cd1722      
2001 05  22.14626  13 08 12.18   -08 25 35.0         01FT185   807  Cd1722      
2001 06  08.99119  13 07 26.32   -08 21 57.4   25.2R 01FT185   304  Cd1722      
2001 06  09.04006  13 07 26.20   -08 21 56.9         01FT185   304  Cd1722      
2002 04  07.13772  13 15 24.69   -09 35 18.6   22.4R 01FT185   807  Cj8685      
2002 04  07.19779  13 15 24.41   -09 35 16.9         01FT185   807  Cj8685      
2002 04  08.17414  13 15 19.94   -09 34 55.1         01FT185   807  Cj8685      
2003 05  30.01370  13 15 58.69   -10 11 06.4         01FT185   807  Cj8685      
2003 05  30.10538  13 15 58.40   -10 11 05.2         01FT185   807  Cj8685      
2016 03  13.34818  14 16 03.24   -21 29 29.7   24.5R 01FT185   G37  C~1pPW      
2016 03  13.42970  14 16 03.00   -21 29 29.5         01FT185   G37  C~1pPW      

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    -0.20
  2   0.0002     -5.66     0.09      -0.26    -0.05
  3   0.1551  -3724.94    -0.58    -233.04     0.11
  4   0.1554  -3730.39    -0.48    -233.44     0.12
  5   0.2043  -4442.79     0.57    -291.48    -0.34
  6   0.2044  -4444.62     0.23    -291.69    -0.39
  7   1.0315   3784.82     0.00   -1680.88     0.25
  8   1.0317   3780.34    -0.13   -1680.86     0.57
  9   1.0343   3710.86     0.03   -1685.53     0.36
 10   2.1756   5058.83     0.17   -3483.09    -0.08
 11   2.1758   5054.41    -0.08   -3483.58    -0.33
 12  14.9650  70748.71    -0.26  -24632.19    -0.03
 13  14.9652  70745.07     0.25  -24633.03     0.01

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.

01FT185    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.945    46.967    46.924
ecceobj         0.106     0.107     0.106
incobj         19.570    19.570    19.571
qmin           41.188    41.174    41.151
qmax           53.718    53.784    53.713
amean          47.296    47.319    47.274
amin           46.898    46.934    46.883
amax           47.726    47.760    47.693
emean           0.113     0.113     0.112
emin            0.100     0.101     0.100
emax            0.126     0.127     0.126
imean          19.400    19.400    19.401
imin           19.104    19.100    19.097
imax           19.689    19.690    19.682
excite_mean     0.351     0.351     0.351
fracstop        1.000     1.000     1.000
cjmean          2.986     2.986     2.986

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       179.1     179.0     179.3
kozaiamp        180.0     179.9     180.0