Orbit Fit and Astrometric record for 99RJ215

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: 99RJ215   
# Created Mon Oct 23 01:37:04 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   26
# Arc:   9.13y
# First observation: 1999/09/07
#  Last observation: 2008/10/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000235   0.036958  -0.000139   0.011723   0.030463   0.000000
# Chi-squared of fit:    22.20 DOF:   42 RMS:  0.17
# Min/Max residuals:    -0.58    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.901727E-05  3.520080E-02  5.509994E-06  1.113159E-02  2.937263E-02 -2.895861E-03
# Covariance matrix:
  1.4569E-13 -1.1573E-13  1.0431E-14 -3.3768E-14  8.6000E-14 -3.1952E-13
 -1.1573E-13  3.7516E-13 -3.2820E-14  1.2052E-13 -3.5792E-14  1.1359E-12
  1.0431E-14 -3.2820E-14  1.0810E-13 -2.3072E-14  1.1527E-14 -1.0069E-13
 -3.3768E-14  1.2052E-13 -2.3072E-14  4.2373E-14 -1.3389E-14  3.6826E-13
  8.6000E-14 -3.5792E-14  1.1527E-14 -1.3389E-14  4.8851E-13 -1.3415E-13
 -3.1952E-13  1.1359E-12 -1.0069E-13  3.6826E-13 -1.3415E-13  3.4713E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.457442  -18.321299   -0.043245    0.164093   -0.986476  2451428.934853
# Heliocentric elements and errors
Epoch:              2451420.5000  =  1999/08/30
Mean Anomaly:          354.24925 +/-     0.005
Argument of Peri:       43.76651 +/-     0.011
Long of Asc Node:      314.89849 +/-     0.000
Inclination:            19.69607 +/-     0.000
Eccentricity:         0.42298897 +/-    0.0001
Semi-Major Axis:     60.06899654 +/-    0.0126
Time of Perihelion: 2454136.9149 +/-       2.0
Perihelion:          34.66047375 +/-    0.0096
Aphelion:            85.47751933 +/-    0.0190
Period (y)              465.5687 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.85100638 +/-    0.0008
Ecliptic Y          -10.82731910 +/-    0.0003
Ecliptic Z            5.59435211 +/-    0.0001
Ecliptic XDOT         0.00061271 +/-    0.0000
Ecliptic YDOT         0.00326039 +/-    0.0000
Ecliptic ZDOT         0.00097919 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.03878187 +/-    0.0007
Geocenter to KBO     34.04529866 +/-    0.0008
# Hcoef:  7.29

The following table shows the complete astrometric record for 99RJ215. 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 (99RJ215) followed by the observatory code and reference code for the source of the astrometry.

1999 09  07.43411  22 38 03.36   +01 34 15.7   22.3R 99RJ215   568  Ca8547      
1999 09  07.46756  22 38 03.18   +01 34 14.9   22.3R 99RJ215   568  Ca8547      
1999 09  07.50057  22 38 03.02   +01 34 13.3   22.0R 99RJ215   568  Ca8547      
1999 09  09.44480  22 37 52.77   +01 33 21.6   22.4R 99RJ215   568  Ca8547      
1999 09  09.45640  22 37 52.71   +01 33 21.3   22.4R 99RJ215   568  Ca8547      
1999 09  13.39865  22 37 32.16   +01 31 33.0   22.3R 99RJ215   568  Ca8547      
1999 09  13.40573  22 37 32.12   +01 31 32.8   22.4R 99RJ215   568  Ca8547      
1999 10  10.24860  22 35 28.44   +01 18 49.4   22.8R 99RJ215   568  Ca8547      
1999 10  10.29797  22 35 28.24   +01 18 48.0   22.6R 99RJ215   568  Ca8547      
1999 11  09.27106  22 34 11.78   +01 07 20.7   22.7R 99RJ215   568  Ca8547      
1999 11  09.38201  22 34 11.65   +01 07 18.8   22.7R 99RJ215   568  Ca8547      
2000 08  28.40307  22 45 25.28   +02 59 36.4         99RJ215   568  Cb9109      
2000 08  28.42615  22 45 25.14   +02 59 35.8   22.5R 99RJ215   568  Cb9109      
2000 08  29.52351  22 45 19.31   +02 59 09.9   22.3R 99RJ215   568  Cb9109      
2000 08  29.56050  22 45 19.11   +02 59 08.9   22.6R 99RJ215   568  Cb9109      
2002 10  31.11219  22 53 53.31   +05 12 20.0         99RJ215   695  Ch3084      
2002 10  31.22290  22 53 53.00   +05 12 16.9         99RJ215   695  Ch3084      
2007 09  11.37815  23 31 23.28   +12 23 10.9   22.1r 99RJ215   695  Cv8413      
2007 09  11.42861  23 31 22.99   +12 23 09.7   21.8r 99RJ215   695  Cv8413      
2008 09  08.25449  23 38 35.24   +13 43 43.5   23.1R 99RJ215   250  S~06AL      
2008 09  08.26074  23 38 35.21   +13 43 43.4         99RJ215   250  S~06AL      
2008 09  08.31838  23 38 34.90   +13 43 42.1         99RJ215   250  S~06AL      
2008 09  08.32463  23 38 34.86   +13 43 41.9         99RJ215   250  S~06AL      
2008 10  23.18145  23 34 47.56   +13 19 49.7   22.7r 99RJ215   695  C~0gLs      
2008 10  24.21947  23 34 43.35   +13 19 11.8   22.4r 99RJ215   695  C~0gLs      
2008 10  24.29708  23 34 43.04   +13 19 09.3   21.9r 99RJ215   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    -0.01       0.00     0.10
  2   0.0001     -2.80     0.02       0.28     0.18
  3   0.0002     -5.63    -0.01      -0.30    -0.58
  4   0.0055   -167.46    -0.11       9.89     0.02
  5   0.0055   -168.41    -0.08       9.96     0.02
  6   0.0163   -494.63    -0.30      26.10     0.08
  7   0.0163   -495.26    -0.34      26.14     0.10
  8   0.0898  -2500.97     0.30      20.25    -0.03
  9   0.0900  -2504.28     0.21      20.09    -0.03
 10   0.1720  -3825.97     0.16    -182.72     0.22
 11   0.1723  -3828.50     0.16    -183.74     0.17
 12   0.9746   8070.13     0.07    2245.13    -0.14
 13   0.9747   8067.96    -0.16    2245.36    -0.11
 14   0.9777   7977.17     0.05    2254.24     0.03
 15   0.9778   7974.01     0.00    2254.45    -0.07
 16   3.1476  18152.63 (   0.73)   6792.66 (   1.02)
 17   3.1480  18147.13 (   0.38)   6791.51 (   1.01)
 18   8.0108  60354.60     0.22   19273.67     0.05
 19   8.0109  60349.81     0.05   19274.00     0.19
 20   9.0043  68772.81     0.08   21864.59    -0.10
 21   9.0043  68772.31     0.15   21864.64    -0.08
 22   9.0045  68767.08     0.15   21864.91    -0.07
 23   9.0045  68766.40     0.02   21864.91    -0.10
 24   9.1273  64759.98    -0.37   21593.06     0.03
 25   9.1301  64681.60    -0.27   21576.85    -0.08
 26   9.1304  64675.95    -0.00   21575.95     0.21

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.

99RJ215    quality flag:2

Type:       SCATNEAR  SCATNEAR11:4EEEEEE

axisobj        59.973    60.010    59.936
ecceobj         0.422     0.422     0.422
incobj         19.705    19.705    19.705
qmin           32.994    33.361    33.741
qmax           86.617    86.370    85.809
amean          59.121    59.082    59.100
amin           58.281    58.200    58.292
amax           60.205    60.227    60.121
emean           0.418     0.414     0.412
emin            0.392     0.389     0.398
emax            0.442     0.436     0.429
imean          20.755    20.838    21.129
imin           19.506    19.575    20.420
imax           21.827    22.125    21.717
excite_mean     0.548     0.546     0.548
fracstop        1.000     1.000     1.000
cjmean          2.889     2.892     2.890

libcent 0      -180.0    -180.0     179.0
libamp  0      -180.0    -180.0     159.3
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       171.9     168.1     163.4
kozaiamp        179.9     179.9     180.0