Orbit Fit and Astrometric record for 99RU214

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: 99RU214   
# Created Sat Oct 21 01:37:03 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   9.13y
# First observation: 1999/09/06
#  Last observation: 2008/10/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000028   0.020801  -0.000012  -0.001545   0.021836   0.000000
# Chi-squared of fit:    11.86 DOF:   34 RMS:  0.14
# Min/Max residuals:    -0.31    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.527320E-05  2.204493E-02 -7.575872E-07 -1.636155E-03  2.258890E-02  6.474031E-03
# Covariance matrix:
  1.9426E-13 -3.3695E-13 -5.4643E-15  2.2434E-14  8.6794E-14 -1.7824E-12
 -3.3695E-13  1.7005E-12  2.8921E-14 -1.1990E-13 -2.7712E-13  9.5078E-12
 -5.4643E-15  2.8921E-14  1.2808E-13 -1.8921E-14 -4.7422E-15  1.6224E-13
  2.2434E-14 -1.1990E-13 -1.8921E-14  1.4147E-14  1.8442E-14 -6.7309E-13
  8.6794E-14 -2.7712E-13 -4.7422E-15  1.8442E-14  2.3593E-13 -1.4814E-12
 -1.7824E-12  9.5078E-12  1.6224E-13 -6.7309E-13 -1.4814E-12  5.3367E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.198928  -40.028087   -0.391926   -0.003442   -0.921409  2451427.769003
# Heliocentric elements and errors
Epoch:              2451420.5000  =  1999/08/30
Mean Anomaly:           39.60634 +/-     0.032
Argument of Peri:      108.64311 +/-     0.012
Long of Asc Node:      137.85655 +/-     0.000
Inclination:             4.25294 +/-     0.000
Eccentricity:         0.34010286 +/-    0.0004
Semi-Major Axis:     55.90473105 +/-    0.0269
Time of Perihelion: 2434623.4330 +/-       6.3
Perihelion:          36.89137238 +/-    0.0293
Aphelion:            74.91808972 +/-    0.0429
Period (y)              418.0046 +/-      0.30
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.86403476 +/-    0.0007
Ecliptic Y          -28.76248422 +/-    0.0006
Ecliptic Z           -0.15370727 +/-    0.0000
Ecliptic XDOT         0.00231473 +/-    0.0000
Ecliptic YDOT         0.00155007 +/-    0.0000
Ecliptic ZDOT        -0.00020097 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.19740086 +/-    0.0007
Geocenter to KBO     44.26953854 +/-    0.0010
# Hcoef:  6.96

The following table shows the complete astrometric record for 99RU214. 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 (99RU214) followed by the observatory code and reference code for the source of the astrometry.

1999 09  06.26826  21 29 47.07   -15 00 42.8   22.7R 99RU214   568  Ca7817      
1999 09  06.31376  21 29 46.89   -15 00 43.6   23.3R 99RU214   568  Ca7817      
1999 09  06.36014  21 29 46.70   -15 00 44.3   23.5R 99RU214   568  Ca7817      
1999 09  10.25075  21 29 31.76   -15 01 59.7   23.6R 99RU214   568  Ca7817      
1999 09  10.26235  21 29 31.70   -15 02 00.0   23.7R 99RU214   568  Ca7817      
1999 10  08.29326  21 28 07.47   -15 09 05.6   24.1R 99RU214   568  Ca7817      
1999 10  08.35743  21 28 07.35   -15 09 06.2   24.1R 99RU214   568  Ca7817      
1999 10  09.24343  21 28 05.54   -15 09 15.5   24.1R 99RU214   568  Ca7817      
1999 11  11.23247  21 27 43.95   -15 11 20.8   23.4R 99RU214   568  Ca7817      
1999 11  12.22191  21 27 44.77   -15 11 17.4   23.5R 99RU214   568  Ca7817      
1999 11  13.21659  21 27 45.68   -15 11 13.8   23.2R 99RU214   568  Ca7817      
2000 09  21.25257  21 33 53.27   -14 46 52.8   23.8R 99RU214   695  Cr3548      
2006 04  26.40309  22 07 17.13   -12 23 26.7   22.7R 99RU214   807  Cr3548      
2006 04  27.41524  22 07 19.84   -12 23 13.8         99RU214   807  Cr3548      
2006 04  28.40535  22 07 22.38   -12 23 01.8         99RU214   807  Cr3548      
2006 06  21.31578  22 07 46.71   -12 22 30.9   23.5R 99RU214   304  Cr4804      
2006 06  21.35897  22 07 46.64   -12 22 31.8         99RU214   304  Cr4804      
2008 10  23.21240  22 10 01.01   -12 22 28.1   22.6r 99RU214   695  C~0gLs      
2008 10  24.12315  22 09 59.54   -12 22 35.9   22.5r 99RU214   695  C~0gLs      
2008 10  24.19408  22 09 59.41   -12 22 36.4   22.3r 99RU214   695  C~0gLs      

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     0.03       0.00    -0.08
  2   0.0001     -2.73     0.09       0.06     0.01
  3   0.0003     -5.56     0.09       0.27     0.24
  4   0.0109   -234.73     0.12      -3.06     0.04
  5   0.0109   -235.65    -0.12      -3.08     0.03
  6   0.0877  -1527.50    -0.16     -23.67    -0.03
  7   0.0879  -1529.34     0.13     -23.70    -0.04
  8   0.0903  -1557.14     0.17     -24.31    -0.01
  9   0.1806  -1893.25    -0.06     -45.37    -0.08
 10   0.1833  -1880.91    -0.13     -45.86     0.04
 11   0.1860  -1867.27    -0.30     -46.56    -0.06
 12   1.0431   3648.11     0.16    -346.26    -0.12
 13   6.6369  34367.16    -0.09   -2087.61     0.06
 14   6.6397  34410.03     0.12   -2089.57    -0.05
 15   6.6424  34450.18    -0.31   -2091.50    -0.15
 16   6.7900  34804.49     0.14   -2189.81     0.38
 17   6.7901  34803.18     0.03   -2190.29    -0.05
 18   9.1306  36702.35     0.18   -2895.23    -0.11
 19   9.1331  36678.72     0.03   -2894.85    -0.09
 20   9.1333  36676.70    -0.14   -2894.64     0.07

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.

99RU214    quality flag:2

Type:       SCATNEAR  SCATNEAR    5:2EEE

axisobj        55.804    55.884    55.724
ecceobj         0.339     0.341     0.338
incobj          4.255     4.255     4.255
qmin           35.775    36.130    36.185
qmax           76.776    76.549    76.313
amean          55.399    55.829    55.464
amin           54.513    55.098    54.616
amax           56.593    56.640    56.507
emean           0.333     0.337     0.336
emin            0.310     0.322     0.322
emax            0.358     0.352     0.350
imean           3.487     3.533     3.178
imin            2.893     2.986     2.935
imax            4.352     4.335     3.467
excite_mean     0.339     0.342     0.341
fracstop        1.000     1.000     1.000
cjmean          3.096     3.098     3.095

libcent 0      -180.0    -180.0     180.6
libamp  0      -180.0    -180.0     161.4
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       181.5     181.9     179.7
kozaiamp        180.0     180.0     180.0