Orbit Fit and Astrometric record for 99RZ214

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: 99RZ214   
# Created Fri Dec  3 02:08:39 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     17 observations of     17
# Arc:  18.04y
# First observation: 1999/09/06
#  Last observation: 2017/09/22
# Chi-squared of fit:    27.69 DOF:     28 RMS:  0.23
# Min/Max residuals:    -0.53    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.853843E-05  2.882717E-02 -6.890213E-06 -9.778001E-03  2.558506E-02  7.944983E-03
# Covariance matrix:
  2.5825E-13  2.6413E-14  1.1908E-14 -1.1844E-14  2.4673E-13  7.3565E-14
  2.6413E-14  1.0402E-13  2.4173E-14 -3.5374E-14  1.6260E-13  2.2291E-13
  1.1908E-14  2.4173E-14  1.3310E-13 -1.6796E-14  4.4366E-14  5.2686E-14
 -1.1844E-14 -3.5374E-14 -1.6796E-14  1.4149E-14 -5.5959E-14 -7.7215E-14
  2.4673E-13  1.6260E-13  4.4366E-14 -5.5959E-14  5.6600E-13  3.5092E-13
  7.3565E-14  2.2291E-13  5.2686E-14 -7.7215E-14  3.5092E-13  4.8660E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.118536   10.354483    0.457178    0.140944   -0.879582  2451427.943383
# Heliocentric elements and errors
Epoch:              2451428.5000  =  1999/09/07
Mean Anomaly:            9.08125 +/-     0.004
Argument of Peri:      114.79972 +/-     0.006
Long of Asc Node:      214.57524 +/-     0.000
Inclination:            20.44286 +/-     0.000
Eccentricity:         0.57519385 +/-    0.0001
Semi-Major Axis:     86.49581862 +/-    0.0225
Time of Perihelion: 2444016.5192 +/-       4.2
Perihelion:          36.74395581 +/-    0.0125
Aphelion:           136.24768143 +/-    0.0364
Period (y)              804.4534 +/-      0.31
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.92897803 +/-    0.0011
Ecliptic Y            6.64929635 +/-    0.0002
Ecliptic Z            6.19389225 +/-    0.0002
Ecliptic XDOT         0.00043037 +/-    0.0000
Ecliptic YDOT         0.00322356 +/-    0.0000
Ecliptic ZDOT        -0.00089832 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.97534357 +/-    0.0011
Geocenter to KBO     39.08516038 +/-    0.0011
# Hcoef:  7.73

The following table shows the complete astrometric record for 99RZ214. 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 (99RZ214) followed by the observatory code and reference code for the source of the astrometry.

1999 09  06.44264  00 23 27.75   +12 28 25.5   23.4R 99RZ214   568  Ca8546      
1999 09  06.48988  00 23 27.58   +12 28 24.0   23.2R 99RZ214   568  Ca8546      
1999 09  06.53045  00 23 27.40   +12 28 23.2   23.1R 99RZ214   568  Ca8546      
1999 09  09.52779  00 23 15.05   +12 27 05.4   23.8R 99RZ214   568  Ca8546      
1999 09  09.53939  00 23 15.00   +12 27 05.1   24.1R 99RZ214   568  Ca8546      
1999 10  09.45885  00 21 02.58   +12 11 00.3   23.7R 99RZ214   568  Ca8546      
1999 10  09.50226  00 21 02.36   +12 10 58.9   23.5R 99RZ214   568  Ca8546      
1999 11  10.35318  00 18 59.93   +11 51 28.4   23.7R 99RZ214   568  Ca8546      
1999 11  10.39921  00 18 59.82   +11 51 27.1   23.6R 99RZ214   568  Ca8546      
2000 12  27.22947  00 25 08.531  +11 40 35.16  23.1R 99RZ214   568  Cl2529      
2000 12  28.23874  00 25 09.610  +11 40 22.20  23.2R 99RZ214   568  Cl2529      
2003 11  21.13688  00 46 04.66   +12 18 01.6   23.0R 99RZ214   695  Cl2529      
2003 11  21.18662  00 46 04.50   +12 17 59.9         99RZ214   695  Cl2529      
2015 11  08.23092  01 59 34.01   +12 57 49.9   24.1R 99RZ214   G37  C~1dc0      
2015 11  08.29455  01 59 33.80   +12 57 48.2         99RZ214   G37  C~1dc0      
2017 09  22.334751 02 13 14.66   +13 15 26.1         99RZ214   W84  C~3i92      
2017 09  22.339456 02 13 14.65   +13 15 26.2         99RZ214   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    -0.21       0.00     0.10
     2   0.0001      0.00     0.18       0.00    -0.21
     3   0.0002      0.00     0.01       0.00     0.01
     4   0.0084      0.00    -0.04       0.00    -0.04
     5   0.0085      0.00    -0.05       0.00    -0.03
     6   0.0904      0.00     0.16       0.00    -0.01
     7   0.0905      0.00    -0.21       0.00     0.17
     8   0.1777      0.00     0.05       0.00    -0.38
     9   0.1778      0.00     0.53       0.00    -0.07
    10   1.3081      0.00    -0.29       0.00     0.29
    11   1.3109      0.00    -0.53       0.00     0.20
    12   4.2072      0.00     0.32       0.00     0.05
    13   4.2074      0.00     0.02       0.00    -0.13
    14  16.1719      0.00    -0.47       0.00     0.09
    15  16.1721      0.00     0.34       0.00     0.10
    16  18.0449      0.00     0.02       0.00    -0.19
    17  18.0449      0.00     0.10       0.00     0.01

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.

99RZ214    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        86.316    86.317    86.315
ecceobj         0.574     0.574     0.574
incobj         20.442    20.442    20.442
qmin           35.725    35.942    35.839
qmax          137.473   137.024   136.759
amean          85.050    85.054    84.856
amin           83.655    83.614    83.486
amax           87.189    87.083    86.783
emean           0.564     0.559     0.561
emin            0.547     0.540     0.546
emax            0.580     0.576     0.578
imean          21.590    22.144    21.826
imin           20.599    20.928    20.812
imax           22.760    23.452    22.818
excite_mean     0.673     0.674     0.673
fracstop        1.000     1.000     1.000
cjmean          2.935     2.935     2.935

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       234.7     226.7     213.5
kozaiamp        180.0     180.0     180.0