Orbit Fit and Astrometric record for 01XJ255

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: 01XJ255   
# Created Fri Mar 29 01:10:43 2024
# Orbit generated from Bernstein formalism
# Fitting      7 observations of      7
# Arc:  35.16d
# First observation: 2001/12/10
#  Last observation: 2002/01/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.029014  -0.000001  -0.004229   0.025587   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     6.26 DOF:      9 RMS:  0.17
# Min/Max residuals:    -0.28    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.562307E-05  2.538876E-02 -4.020971E-06 -4.226619E-03  2.495923E-02  1.134698E-03
# Covariance matrix:
  7.7113E-12  1.2984E-08  1.4879E-13  4.5630E-12  2.1810E-09  4.8518E-08
  1.2984E-08  2.3509E-05  2.5656E-10  1.6002E-08  3.9103E-06  6.9355E-05
  1.4879E-13  2.5656E-10  3.0560E-13 -3.2316E-12  4.3301E-11  1.0648E-09
  4.5630E-12  1.6002E-08 -3.2316E-12  2.0463E-10  2.2821E-09 -1.3950E-07
  2.1810E-09  3.9103E-06  4.3301E-11  2.2821E-09  6.5227E-07  1.2442E-05
  4.8518E-08  6.9355E-05  1.0648E-09 -1.3950E-07  1.2442E-05  6.4996E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.746742  104.787419    0.435727   -0.011505   -0.876620  2452253.854647
# Heliocentric elements and errors
Epoch:              2452250.5000  =  2001/12/07
Mean Anomaly:           14.92186 +/-    11.741
Argument of Peri:      165.51958 +/-   120.493
Long of Asc Node:      279.77962 +/-     0.875
Inclination:             9.45190 +/-     1.810
Eccentricity:         0.11668236 +/-    0.5873
Semi-Major Axis:     46.09636064 +/-   17.6133
Time of Perihelion: 2447512.2395 +/-  118010.8
Perihelion:          40.71772855 +/-   31.2244
Aphelion:            51.47499273 +/-   33.4627
Period (y)              312.9739 +/-    179.38
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -10.02649197 +/-    0.3308
Ecliptic Y           39.69936442 +/-    1.2534
Ecliptic Z           -0.52232918 +/-    0.0169
Ecliptic XDOT        -0.00273154 +/-    0.0010
Ecliptic YDOT        -0.00059636 +/-    0.0026
Ecliptic ZDOT        -0.00046500 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.94927233 +/-    1.2178
Geocenter to KBO     40.06533632 +/-    1.2964
# Hcoef:  8.16

The following table shows the complete astrometric record for 01XJ255. 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 (01XJ255) followed by the observatory code and reference code for the source of the astrometry.

2001 12  10.353904 07 03 51.12   +21 52 36.6   23.9r 01XJ255   568  C~5bes      
2001 12  10.406564 07 03 50.85   +21 52 36.7         01XJ255   568  C~5bes      
2001 12  11.55019  07 03 45.35   +21 52 41.4         01XJ255   568  Ce7056      
2001 12  11.57340  07 03 45.26   +21 52 41.6         01XJ255   568  Ce7056      
2001 12  11.59678  07 03 45.12   +21 52 41.9         01XJ255   568  Ce7056      
2002 01  14.47752  07 00 46.18   +21 55 42.8   24.1R 01XJ255   568  Ce7056      
2002 01  14.51314  07 00 45.97   +21 55 42.6   24.0R 01XJ255   568  Ce7056      

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     0.10       0.00     0.28
     2   0.0001     -3.75    -0.10      -0.31     0.11
     3   0.0033    -80.36    -0.09      -4.01    -0.28
     4   0.0033    -81.63     0.23      -3.95    -0.14
     5   0.0034    -83.60    -0.14      -3.86     0.02
     6   0.0962  -2579.15     0.10     -90.05     0.21
     7   0.0963  -2582.03    -0.10     -90.55    -0.20

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.

01XJ255    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