Orbit Fit and Astrometric record for 99RB215

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: 99RB215   
# Created Mon Dec 11 02:37:03 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   19
# Arc:   9.13y
# First observation: 1999/09/06
#  Last observation: 2008/10/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000174   0.041850  -0.000078   0.005767   0.033511   0.000000
# Chi-squared of fit:     6.71 DOF:   26 RMS:  0.11
# Min/Max residuals:    -0.22    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.988793E-05  4.157995E-02  2.746383E-06  5.738602E-03  3.257119E-02  3.100914E-03
# Covariance matrix:
  2.3630E-13  3.5827E-14 -1.6237E-15  5.6576E-15  2.4676E-13  1.1231E-13
  3.5827E-14  2.2665E-13 -1.0555E-14  2.9809E-14  2.7146E-13  5.9496E-13
 -1.6237E-15 -1.0555E-14  1.2747E-13 -1.9600E-14 -1.1327E-14 -2.9289E-14
  5.6576E-15  2.9809E-14 -1.9600E-14  1.3615E-14  3.3993E-14  8.2316E-14
  2.4676E-13  2.7146E-13 -1.1327E-14  3.3993E-14  6.7443E-13  6.7734E-13
  1.1231E-13  5.9496E-13 -2.9289E-14  8.2316E-14  6.7734E-13  1.6432E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.216817    7.267729    0.406985    0.003241   -0.914777  2451428.041393
# Heliocentric elements and errors
Epoch:              2451420.5000  =  1999/08/30
Mean Anomaly:            6.04326 +/-     0.004
Argument of Peri:      348.20443 +/-     0.008
Long of Asc Node:        5.00299 +/-     0.000
Inclination:             7.83901 +/-     0.000
Eccentricity:         0.34873640 +/-    0.0001
Semi-Major Axis:     48.22405619 +/-    0.0070
Time of Perihelion: 2449367.1517 +/-       1.1
Perihelion:          31.40657221 +/-    0.0059
Aphelion:            65.04154016 +/-    0.0102
Period (y)              334.8913 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.42163543 +/-    0.0008
Ecliptic Y            3.59844213 +/-    0.0001
Ecliptic Z            0.11627098 +/-    0.0000
Ecliptic XDOT        -0.00018948 +/-    0.0000
Ecliptic YDOT         0.00350809 +/-    0.0000
Ecliptic ZDOT         0.00048342 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.62722684 +/-    0.0008
Geocenter to KBO     30.70198030 +/-    0.0008
# Hcoef:  9.28

The following table shows the complete astrometric record for 99RB215. 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 (99RB215) followed by the observatory code and reference code for the source of the astrometry.

1999 09  06.54065  00 26 21.09   +03 05 00.9   24.0R 99RB215   568  Ca8546      
1999 09  06.57078  00 26 20.93   +03 04 59.9   24.3R 99RB215   568  Ca8546      
1999 09  06.60771  00 26 20.72   +03 04 58.9   23.6R 99RB215   568  Ca8546      
1999 09  09.55351  00 26 05.44   +03 03 31.2   24.1R 99RB215   568  Ca8546      
1999 09  09.56510  00 26 05.37   +03 03 30.9   23.8R 99RB215   568  Ca8546      
1999 09  09.57670  00 26 05.30   +03 03 30.3   23.8R 99RB215   568  Ca8546      
1999 10  10.35425  00 23 12.60   +02 46 46.4   24.2R 99RB215   568  Ca8546      
1999 10  10.39580  00 23 12.40   +02 46 45.5   23.8R 99RB215   568  Ca8546      
1999 10  10.45692  00 23 12.06   +02 46 43.2   23.7R 99RB215   568  Ca8546      
1999 10  11.43385  00 23 06.55   +02 46 11.7   24.3R 99RB215   568  Ca8546      
1999 10  11.48545  00 23 06.26   +02 46 09.2   24.2R 99RB215   568  Ca8546      
1999 11  11.36506  00 20 36.71   +02 31 43.5   24.0R 99RB215   568  Ca8546      
1999 11  11.41458  00 20 36.51   +02 31 42.4   24.3R 99RB215   568  Ca8546      
2000 12  27.21111  00 27 35.328  +03 39 47.28  24.3R 99RB215   568  Cl2513      
2000 12  28.21603  00 27 36.515  +03 39 56.92  24.3R 99RB215   568  Cl2513      
2003 11  21.14863  00 52 35.78   +07 19 44.7   23.5R 99RB215   695  Cl2513      
2003 11  21.19689  00 52 35.59   +07 19 43.7         99RB215   695  Cl2513      
2008 10  24.32367  01 35 11.91   +13 12 03.1   23.6r 99RB215   695  C~0gLs      
2008 10  24.39401  01 35 11.51   +13 12 00.9   24.0r 99RB215   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     0.06       0.00     0.01
  2   0.0001     -2.60    -0.02       0.03    -0.08
  3   0.0002     -5.88    -0.22       0.35     0.10
  4   0.0082   -250.78     0.23      10.24    -0.03
  5   0.0083   -251.86     0.14      10.38     0.06
  6   0.0083   -253.06    -0.07      10.24    -0.12
  7   0.0926  -3026.52    -0.11     111.44     0.09
  8   0.0927  -3029.63 (   0.60)    111.80 (   0.29)
  9   0.0929  -3035.22 (   0.61)    111.70 (  -0.04)
 10   0.0955  -3123.51 (   0.18)    115.45 (   0.64)
 11   0.0957  -3128.50    -0.10     114.87    -0.13
 12   0.1802  -5530.06     0.09     207.50    -0.02
 13   0.1804  -5533.25    -0.03     207.68    -0.01
 14   1.3078   1845.46     0.01    1477.66    -0.05
 15   1.3105   1865.59     0.09    1479.50    -0.11
 16   4.2070  27792.68    -0.03    4901.35     0.20
 17   4.2071  27789.63    -0.08    4901.52     0.30
 18   9.1329  73433.42    -0.07   10891.58    -0.05
 19   9.1331  73426.38     0.11   10891.54    -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.

99RB215    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.176    48.196    48.155
ecceobj         0.348     0.348     0.348
incobj          7.841     7.841     7.841
qmin           29.835    30.129    30.202
qmax           66.650    66.260    66.361
amean          47.797    47.797    47.797
amin           47.196    47.223    47.204
amax           48.501    48.525    48.550
emean           0.346     0.345     0.334
emin            0.318     0.318     0.304
emax            0.375     0.369     0.368
imean           7.551     7.923     9.356
imin            3.556     5.709     5.616
imax           10.397    10.373    11.847
excite_mean     0.372     0.372     0.373
fracstop        1.000     1.000     1.000
cjmean          2.971     2.972     2.971

libcent 0        72.5      73.4      75.2
libamp  0        30.1      29.0      35.1
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       302.8     281.8     317.9
kozaiamp         41.1      73.0      36.0