Orbit Fit and Astrometric record for 99JB132

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: 99JB132   
# Created Fri Mar 29 01:09:58 2024
# Orbit generated from Bernstein formalism
# Fitting     25 observations of     25
# Arc:   8.09d
# First observation: 1999/05/10
#  Last observation: 1999/05/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.023536   0.000000   0.006271   0.026763   0.000000
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after  17 iterations -- oscilliatory solution
# Chi-squared of fit:     3.78 DOF:     45 RMS:  0.07
# Min/Max residuals:    -0.11    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.545841E-05  2.647771E-02  3.842748E-06  6.279795E-03  2.729264E-02 -1.066545E-02
# Covariance matrix:
  3.3245E-11  5.5681E-08  4.4227E-14  4.3324E-11  9.5966E-09  5.6168E-08
  5.5681E-08  9.3502E-05  7.4258E-11  7.2651E-08  1.6114E-05  9.3631E-05
  4.4227E-14  7.4258E-11  8.1584E-14 -3.7238E-12  1.2798E-11  7.6268E-11
  4.3324E-11  7.2651E-08 -3.7238E-12  6.9111E-10  1.2540E-08  1.1137E-07
  9.5966E-09  1.6114E-05  1.2798E-11  1.2540E-08  2.7770E-06  1.6275E-05
  5.6168E-08  9.3631E-05  7.6268E-11  1.1137E-07  1.6275E-05  3.7356E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.088874 -148.158990   -0.296045    0.001297   -0.971550  2451308.679093
# Heliocentric elements and errors
Epoch:              2451300.5000  =  1999/05/02
Mean Anomaly:          304.16424 +/-    57.999
Argument of Peri:       98.68351 +/-    68.637
Long of Asc Node:      211.93242 +/-     0.104
Inclination:            13.34345 +/-     4.646
Eccentricity:         0.36844793 +/-    0.6730
Semi-Major Axis:     41.19591462 +/-   21.5834
Time of Perihelion: 2466279.7345 +/-   10174.7
Perihelion:          26.01736504 +/-   30.8947
Aphelion:            56.37446420 +/-   40.5097
Period (y)              264.4170 +/-    207.80
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.78690095 +/-    1.9006
Ecliptic Y          -20.09355263 +/-    1.1801
Ecliptic Z            0.05696399 +/-    0.0035
Ecliptic XDOT         0.00230831 +/-    0.0015
Ecliptic YDOT        -0.00168275 +/-    0.0015
Ecliptic ZDOT         0.00062832 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.60533438 +/-    1.7258
Geocenter to KBO     36.63991402 +/-    2.2372
# Hcoef:  8.13

The following table shows the complete astrometric record for 99JB132. 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 (99JB132) followed by the observatory code and reference code for the source of the astrometry.

1999 05  10.17835  13 58 49.13   -12 01 49.2   23.5R 99JB132   807  Ca5619      
1999 05  10.18522  13 58 49.10   -12 01 49.0   23.5R 99JB132   807  Ca5619      
1999 05  10.19209  13 58 49.06   -12 01 48.8   23.4R 99JB132   807  Ca5619      
1999 05  10.19896  13 58 49.04   -12 01 48.5   23.5R 99JB132   807  Ca5619      
1999 05  10.20584  13 58 49.00   -12 01 48.3   23.5R 99JB132   807  Ca5619      
1999 05  10.21271  13 58 48.96   -12 01 48.1   23.8R 99JB132   807  Ca5619      
1999 05  10.21958  13 58 48.93   -12 01 47.9   23.6R 99JB132   807  Ca5619      
1999 05  10.22645  13 58 48.89   -12 01 47.7   23.8R 99JB132   807  Ca5619      
1999 05  10.23333  13 58 48.86   -12 01 47.5   24.0R 99JB132   807  Ca5619      
1999 05  10.24021  13 58 48.82   -12 01 47.3   23.6R 99JB132   807  Ca5619      
1999 05  10.24708  13 58 48.79   -12 01 47.1   23.3R 99JB132   807  Ca5619      
1999 05  10.25395  13 58 48.77   -12 01 46.9   23.3R 99JB132   807  Ca5619      
1999 05  10.26082  13 58 48.72   -12 01 46.7   23.2R 99JB132   807  Ca5619      
1999 05  10.26769  13 58 48.69   -12 01 46.5   23.2R 99JB132   807  Ca5619      
1999 05  10.27456  13 58 48.66   -12 01 46.2   23.4R 99JB132   807  Ca5619      
1999 05  11.21926  13 58 44.11   -12 01 18.2   23.7R 99JB132   807  Ca5619      
1999 05  11.23300  13 58 44.04   -12 01 17.7   23.4R 99JB132   807  Ca5619      
1999 05  11.25362  13 58 43.93   -12 01 17.2   23.9R 99JB132   807  Ca5619      
1999 05  18.18001  13 58 11.51   -11 57 55.9   23.5R 99JB132   807  Ca5619      
1999 05  18.20139  13 58 11.40   -11 57 55.4   23.6R 99JB132   807  Ca5619      
1999 05  18.21515  13 58 11.35   -11 57 54.9   23.7R 99JB132   807  Ca5619      
1999 05  18.23605  13 58 11.25   -11 57 54.4   23.5R 99JB132   807  Ca5619      
1999 05  18.24980  13 58 11.19   -11 57 53.9   23.7R 99JB132   807  Ca5619      
1999 05  18.25677  13 58 11.15   -11 57 53.9   23.3R 99JB132   807  Ca5619      
1999 05  18.26364  13 58 11.12   -11 57 53.7   23.4R 99JB132   807  Ca5619      

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    -0.02       0.00    -0.04
     2   0.0000     -0.48     0.03       0.04    -0.03
     3   0.0000     -1.10    -0.05       0.02    -0.06
     4   0.0001     -1.48     0.11       0.20     0.09
     5   0.0001     -2.10     0.03       0.19     0.06
     6   0.0001     -2.72    -0.06       0.17     0.02
     7   0.0001     -3.20     0.00       0.21     0.03
     8   0.0001     -3.82    -0.08       0.19    -0.00
     9   0.0002     -4.30    -0.03       0.23     0.01
    10   0.0002     -4.92    -0.11       0.21    -0.03
    11   0.0002     -5.41    -0.05       0.25    -0.01
    12   0.0002     -5.75     0.14       0.33     0.05
    13   0.0002     -6.51    -0.08       0.27    -0.04
    14   0.0002     -6.99    -0.03       0.30    -0.03
    15   0.0003     -7.51    -0.01       0.43     0.08
    16   0.0028    -79.82     0.18       3.64    -0.03
    17   0.0029    -80.96     0.11       3.76     0.04
    18   0.0029    -82.65     0.02       3.67    -0.11
    19   0.0219   -598.60     0.01      28.05     0.09
    20   0.0220   -600.28    -0.11      27.96    -0.07
    21   0.0220   -601.15     0.04      28.18     0.10
    22   0.0221   -602.70     0.02      28.14    -0.00
    23   0.0221   -603.69     0.03      28.30     0.11
    24   0.0221   -604.25    -0.01      28.10    -0.11
    25   0.0221   -604.73     0.01      28.14    -0.10

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.

99JB132    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