Orbit Fit and Astrometric record for 99HY11

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: 99HY11    
# Created Tue Dec 12 02:37:03 2017
# Orbit generated from Bernstein formalism
# Fitting    6 observations of    6
# Arc:  19.86d
# First observation: 1999/04/17
#  Last observation: 1999/05/07
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit:     8.79 DOF:    8 RMS:  0.21
# Min/Max residuals:    -0.32    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.690463E-05  2.578904E-02 -3.242118E-07 -2.536377E-03  2.571363E-02  0.000000E+00
# Covariance matrix:
  3.8902E-11  6.0576E-08  9.8769E-13  1.6696E-09  1.1078E-08  0.0000E+00
  6.0576E-08  9.5537E-05  1.5575E-09  2.6328E-06  1.7470E-05  0.0000E+00
  9.8769E-13  1.5575E-09  5.0743E-13  3.3994E-11  2.8480E-10  0.0000E+00
  1.6696E-09  2.6328E-06  3.3994E-11  7.2890E-08  4.8142E-07  0.0000E+00
  1.1078E-08  1.7470E-05  2.8480E-10  4.8142E-07  3.1945E-06  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  2.2372E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.976854 -172.546093   -0.330601    0.049398   -0.954454  2451285.650103
# Heliocentric elements and errors
Epoch:              2451280.5000  =  1999/04/12
Mean Anomaly:           25.41620 +/-   143.508
Argument of Peri:      126.31096 +/-   207.255
Long of Asc Node:       35.01966 +/-    11.235
Inclination:             6.36093 +/-     2.422
Eccentricity:         0.02027902 +/-    0.5590
Semi-Major Axis:     40.57752326 +/-   20.1328
Time of Perihelion: 2444614.9666 +/-  415253.7
Perihelion:          39.75465090 +/-   30.0592
Aphelion:            41.40039562 +/-   30.6012
Period (y)              258.4857 +/-    192.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.40574067 +/-    2.6768
Ecliptic Y           -5.49011233 +/-    0.3500
Ecliptic Z            2.01965244 +/-    0.1404
Ecliptic XDOT         0.00033987 +/-    0.0016
Ecliptic YDOT        -0.00271573 +/-    0.0009
Ecliptic ZDOT        -0.00026967 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   39.83757933 +/-    2.6482
Geocenter to KBO     38.88988329 +/-    2.7032
# Hcoef:  8.25

The following table shows the complete astrometric record for 99HY11. 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 (99HY11) followed by the observatory code and reference code for the source of the astrometry.

1999 04  17.14936  12 32 04.84   -00 13 21.6   23.9R 99HY11    695  Ca4930      
1999 04  17.21366  12 32 04.57   -00 13 19.8         99HY11    695  Ca4930      
1999 04  17.29394  12 32 04.22   -00 13 17.6         99HY11    695  Ca4930      
1999 05  06.87652  12 30 44.55   -00 06 02.1         99HY11    950  Ca4930      
1999 05  06.93757  12 30 44.32   -00 06 00.6         99HY11    950  Ca4930      
1999 05  07.00440  12 30 44.11   -00 06 00.0         99HY11    950  Ca4930      

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    -0.22       0.00    -0.25
  2   0.0002     -4.43     0.03       0.06     0.02
  3   0.0004    -10.12     0.19       0.01     0.24
  4   0.0540  -1280.07    -0.08     -71.16    -0.08
  5   0.0542  -1283.83    -0.32     -71.14     0.23
  6   0.0544  -1286.97     0.39     -71.83    -0.15

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.

99HY11    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