Orbit Fit and Astrometric record for 99RR215

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: 99RR215   
# Created Tue Oct 17 01:37:03 2017
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   14
# Arc:   1.31y
# First observation: 1999/09/07
#  Last observation: 2000/12/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000010   0.025967   0.000000  -0.000521   0.025252   0.000000
# Chi-squared of fit:    10.26 DOF:   20 RMS:  0.16
# Min/Max residuals:    -0.30    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.715396E-05  2.595471E-02  4.037954E-07 -5.329328E-04  2.528998E-02  2.593629E-03
# Covariance matrix:
  2.9365E-13  4.4282E-13  6.6518E-15 -1.3146E-13  1.0681E-12  1.9825E-10
  4.4282E-13  2.9935E-12  3.4293E-14 -6.7831E-13  4.9156E-12  1.0246E-09
  6.6518E-15  3.4293E-14  1.4854E-13 -1.5655E-13  9.7647E-14  2.6473E-11
 -1.3146E-13 -6.7831E-13 -1.5655E-13  9.1581E-13 -1.9334E-12 -5.2448E-10
  1.0681E-12  4.9156E-12  9.7647E-14 -1.9334E-12  1.1959E-11  2.9261E-09
  1.9825E-10  1.0246E-09  2.6473E-11 -5.2448E-10  2.9261E-09  7.9464E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.121992   12.347450    0.471495   -0.002101   -0.882921  2451429.025523
# Heliocentric elements and errors
Epoch:              2451420.5000  =  1999/08/30
Mean Anomaly:           36.75357 +/-     7.507
Argument of Peri:      138.86661 +/-    11.054
Long of Asc Node:      185.86964 +/-     0.010
Inclination:             1.17781 +/-     0.002
Eccentricity:         0.12970439 +/-    0.0276
Semi-Major Axis:     44.76851969 +/-    0.3424
Time of Perihelion: 2440250.4652 +/-    2277.9
Perihelion:          38.96184604 +/-    1.2696
Aphelion:            50.57519334 +/-    1.2934
Period (y)              299.5486 +/-      3.44
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.59749318 +/-    0.0053
Ecliptic Y            8.18623824 +/-    0.0011
Ecliptic Z           -0.08416810 +/-    0.0000
Ecliptic XDOT        -0.00033077 +/-    0.0001
Ecliptic YDOT         0.00281315 +/-    0.0000
Ecliptic ZDOT        -0.00005823 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.43492360 +/-    0.0052
Geocenter to KBO     39.54134775 +/-    0.0054
# Hcoef:  8.09

The following table shows the complete astrometric record for 99RR215. 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 (99RR215) followed by the observatory code and reference code for the source of the astrometry.

1999 09  07.52478  00 45 36.94   +04 46 01.8   24.3R 99RR215   568  Ca9937      
1999 09  07.57141  00 45 36.76   +04 46 00.5   23.9R 99RR215   568  Ca9937      
1999 09  07.60494  00 45 36.63   +04 45 59.9   23.2R 99RR215   568  Ca9937      
1999 09  11.53204  00 45 20.68   +04 44 17.5   23.9R 99RR215   568  Ca9937      
1999 09  11.54363  00 45 20.64   +04 44 17.1   23.9R 99RR215   568  Ca9937      
1999 09  11.55524  00 45 20.60   +04 44 16.7   24.0R 99RR215   568  Ca9937      
1999 10  10.43212  00 43 11.05   +04 30 25.4   24.0R 99RR215   568  Ca9937      
1999 10  10.48288  00 43 10.82   +04 30 24.4   23.9R 99RR215   568  Ca9937      
1999 10  11.46025  00 43 06.29   +04 29 54.7   23.6R 99RR215   568  Ca9937      
1999 10  11.51034  00 43 06.06   +04 29 53.4   24.1R 99RR215   568  Ca9937      
1999 11  11.37721  00 40 57.87   +04 16 11.3   23.5R 99RR215   568  Ca9937      
1999 11  11.42766  00 40 57.70   +04 16 10.0   23.2R 99RR215   568  Ca9937      
2000 12  27.25825  00 45 07.317  +04 40 31.51  24.0R 99RR215   568  Cl2529      
2000 12  28.26167  00 45 07.652  +04 40 33.55  24.0R 99RR215   568  Cl2529      

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    -0.19       0.00    -0.15
  2   0.0001     -2.98    -0.11      -0.15    -0.30
  3   0.0002     -5.01     0.07       0.06    -0.10
  4   0.0110   -264.49     0.01      -1.26     0.10
  5   0.0110   -265.20     0.10      -1.39    -0.04
  6   0.0110   -265.90     0.19      -1.53    -0.17
  7   0.0901  -2373.77     0.31     -10.76     0.16
  8   0.0902  -2377.33 (   0.61)    -10.33 (   0.58)
  9   0.0929  -2451.30    -0.28     -11.20    -0.01
 10   0.0930  -2454.97    -0.16     -11.06     0.13
 11   0.1776  -4541.63     0.00     -17.91     0.33
 12   0.1777  -4544.48     0.05     -18.12     0.12
 13   1.3052   -536.59    -0.01    -131.43    -0.03
 14   1.3080   -531.18     0.01    -131.50    -0.06

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.

99RR215    quality flag:2

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        44.738    46.382    44.278
ecceobj         0.129     0.225     0.087
incobj          1.177     1.180     1.174
qmin           37.996    34.614    39.352
qmax           51.042    59.382    48.737
amean          44.407    46.530    43.933
amin           44.036    45.565    43.571
amax           44.831    47.226    44.310
emean           0.125     0.235     0.084
emin            0.106     0.215     0.066
emax            0.141     0.258     0.101
imean           2.826     4.612     2.468
imin            1.767     1.768     1.645
imax            3.704     6.490     3.171
excite_mean     0.134     0.249     0.095
fracstop        1.000     1.000     1.000
cjmean          3.084     3.055     3.090

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       183.7     177.1     189.1
kozaiamp        180.0     180.0     180.0