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 Dec  6 02:08:37 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     46 observations of     46
# Arc:  17.87y
# First observation: 1999/09/07
#  Last observation: 2017/07/22
# Chi-squared of fit:    83.73 DOF:     86 RMS:  0.24
# Min/Max residuals:    -0.67    0.88
# Exact a, adot, b, bdot, g, gdot:
  1.865400E-05  3.520194E-02  6.326413E-06  1.113169E-02  2.937254E-02 -2.892604E-03
# Covariance matrix:
  1.0480E-13 -1.5215E-14  4.7504E-15 -2.9791E-15  9.0585E-15 -1.3824E-14
 -1.5215E-14  7.0177E-15 -3.1514E-15  2.0525E-15  5.4670E-15  9.1494E-15
  4.7504E-15 -3.1514E-15  9.0256E-14 -6.9902E-15 -1.3373E-15 -4.5376E-15
 -2.9791E-15  2.0525E-15 -6.9902E-15  1.2409E-15  1.5497E-15  2.9275E-15
  9.0585E-15  5.4670E-15 -1.3373E-15  1.5497E-15  1.0468E-13  3.6909E-15
 -1.3824E-14  9.1494E-15 -4.5376E-15  2.9275E-15  3.6909E-15  1.3181E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.457442  -18.321299   -0.043244    0.164092   -0.986475  2451428.934853
# Heliocentric elements and errors
Epoch:              2451428.5000  =  1999/09/07
Mean Anomaly:          354.27444 +/-     0.001
Argument of Peri:       43.74794 +/-     0.001
Long of Asc Node:      314.89787 +/-     0.000
Inclination:            19.69579 +/-     0.000
Eccentricity:         0.42305222 +/-    0.0000
Semi-Major Axis:     60.07730920 +/-    0.0053
Time of Perihelion: 2454133.5770 +/-      22.2
Perihelion:          34.66147005 +/-    0.0041
Aphelion:            85.49314835 +/-    0.0080
Period (y)              465.6653 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.85109944 +/-    0.0004
Ecliptic Y          -10.82736295 +/-    0.0001
Ecliptic Z            5.59439730 +/-    0.0001
Ecliptic XDOT         0.00061302 +/-    0.0000
Ecliptic YDOT         0.00326040 +/-    0.0000
Ecliptic ZDOT         0.00097925 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.03894403 +/-    0.0003
Geocenter to KBO     34.04550185 +/-    0.0004
# Hcoef:  7.34

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      
2012 10  08.29649  00 04 30.578  +18 39 05.96  22.5G 99RJ215   F51  C~2r78      
2012 10  08.31101  00 04 30.487  +18 39 05.56  22.8G 99RJ215   F51  C~2r78      
2012 10  08.32553  00 04 30.419  +18 39 05.10  22.4G 99RJ215   F51  C~2r78      
2012 10  08.34007  00 04 30.346  +18 39 04.56  22.4G 99RJ215   F51  C~2r78      
2013 08  27.59008  00 15 33.107  +20 08 26.83  22.9G 99RJ215   F51  C~2r78      
2014 09  13.58990  00 21 32.123  +21 17 25.03  22.9G 99RJ215   F51  C~2r78      
2014 09  19.53846  00 20 59.826  +21 15 29.66        99RJ215   F51  C~2r78      
2014 12  08.34681  00 15 30.891  +20 28 50.20  22.9G 99RJ215   F51  C~2r78      
2015 08  01.53550  00 31 51.501  +22 26 31.23  22.5G 99RJ215   F51  C~2r78      
2016 10  09.34318  00 34 05.517  +23 26 54.43  23.3G 99RJ215   F51  C~2r78      
2016 10  25.40612  00 32 38.986  +23 17 30.24  22.8G 99RJ215   F51  C~2r78      
2016 10  25.41817  00 32 38.913  +23 17 29.54  22.8G 99RJ215   F51  C~2r78      
2016 10  25.43015  00 32 38.846  +23 17 29.20  23.0G 99RJ215   F51  C~2r78      
2016 10  25.44220  00 32 38.784  +23 17 29.05  22.2G 99RJ215   F51  C~2r78      
2016 11  06.38438  00 31 42.245  +23 09 36.58  22.8G 99RJ215   F51  C~2r78      
2016 11  06.39639  00 31 42.188  +23 09 35.99  22.7G 99RJ215   F51  C~2r78      
2016 11  06.40844  00 31 42.129  +23 09 35.17  22.6G 99RJ215   F51  C~2r78      
2016 11  06.42051  00 31 42.075  +23 09 34.89  22.2G 99RJ215   F51  C~2r78      
2017 07  22.386973 00 46 58.99   +24 34 58.5         99RJ215   W84  C~3i92      
2017 07  22.388675 00 46 58.98   +24 34 58.6         99RJ215   W84  C~3i92      

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     0.08       0.00    -0.04
     2   0.0001      0.00     0.08       0.00     0.05
     3   0.0002      0.00     0.34       0.00    -0.67
     4   0.0055      0.00     0.02       0.00    -0.15
     5   0.0055      0.00     0.05       0.00    -0.14
     6   0.0163      0.00    -0.18       0.00    -0.16
     7   0.0163      0.00    -0.22       0.00    -0.17
     8   0.0898      0.00     0.40       0.00    -0.05
     9   0.0900      0.00     0.31       0.00    -0.09
    10   0.1720      0.00     0.15       0.00     0.11
    11   0.1723      0.00     0.16       0.00     0.06
    12   0.9746      0.00     0.08       0.00    -0.32
    13   0.9747      0.00    -0.14       0.00    -0.38
    14   0.9777      0.00    -0.00       0.00    -0.17
    15   0.9778      0.00    -0.01       0.00    -0.28
    16   3.1476      0.00    -0.07       0.00     0.88
    17   3.1480      0.00    -0.39       0.00     0.75
    18   8.0108      0.00    -0.01       0.00     0.22
    19   8.0109      0.00    -0.21       0.00     0.29
    20   9.0043      0.00     0.09       0.00     0.23
    21   9.0043      0.00     0.15       0.00     0.27
    22   9.0045      0.00     0.14       0.00     0.28
    23   9.0045      0.00     0.04       0.00     0.22
    24   9.1273      0.00    -0.47       0.00     0.16
    25   9.1301      0.00    -0.35       0.00     0.09
    26   9.1304      0.00    -0.22       0.00     0.43
    27  13.0866      0.00     0.02       0.00    -0.20
    28  13.0866      0.00    -0.17       0.00    -0.10
    29  13.0866      0.00    -0.00       0.00    -0.07
    30  13.0867      0.00     0.09       0.00    -0.11
    31  13.9717      0.00    -0.00       0.00     0.08
    32  15.0175      0.00    -0.20       0.00    -0.05
    33  15.0338      0.00    -0.31       0.00     0.18
    34  15.2523      0.00     0.15       0.00    -0.08
    35  15.8990      0.00     0.23       0.00     0.30
    36  17.0894      0.00     0.31       0.00    -0.13
    37  17.1334      0.00     0.27       0.00    -0.06
    38  17.1334      0.00     0.11       0.00    -0.30
    39  17.1335      0.00     0.04       0.00    -0.18
    40  17.1335      0.00     0.05       0.00     0.13
    41  17.1662      0.00     0.09       0.00    -0.01
    42  17.1662      0.00     0.03       0.00    -0.11
    43  17.1663      0.00    -0.05       0.00    -0.44
    44  17.1663      0.00    -0.06       0.00    -0.22
    45  17.8726      0.00     0.23       0.00    -0.07
    46  17.8726      0.00     0.10       0.00    -0.02

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:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.986    59.986    59.986
ecceobj         0.422     0.422     0.422
incobj         19.704    19.704    19.704
qmin           33.325    33.031    32.841
qmax           86.534    86.707    87.192
amean          59.183    59.121    59.182
amin           58.245    58.284    58.200
amax           60.201    60.209    60.464
emean           0.414     0.414     0.422
emin            0.390     0.393     0.399
emax            0.438     0.441     0.444
imean          20.796    21.025    20.416
imin           19.613    19.788    19.222
imax           22.065    21.930    21.636
excite_mean     0.545     0.548     0.548
fracstop        1.000     1.000     1.000
cjmean          2.894     2.889     2.890

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       168.6     177.4     167.0
kozaiamp        180.0     180.0     180.0