Orbit Fit and Astrometric record for 13RV128

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: 13RV128   
# Created Fri Dec  3 02:11:51 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     28 observations of     28
# Arc:  13.22y
# First observation: 2000/09/03
#  Last observation: 2013/11/23
# Chi-squared of fit:    38.14 DOF:     50 RMS:  0.21
# Min/Max residuals:    -0.80    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.852226E-05  3.127743E-02  1.531479E-06  1.985813E-03  2.680851E-02  1.993530E-03
# Covariance matrix:
  2.8285E-13 -5.6038E-14  3.5118E-15 -2.1288E-15  2.3355E-14 -8.9785E-14
 -5.6038E-14  3.9333E-14 -1.9225E-15  2.4588E-15  6.0433E-14  8.6407E-14
  3.5118E-15 -1.9225E-15  2.3116E-13 -2.0264E-14  4.7098E-15 -5.0708E-15
 -2.1288E-15  2.4588E-15 -2.0264E-14  2.4352E-15  5.2030E-15  5.6425E-15
  2.3355E-14  6.0433E-14  4.7098E-15  5.2030E-15  4.8748E-13  1.1169E-13
 -8.9785E-14  8.6407E-14 -5.0708E-15  5.6425E-15  1.1169E-13  2.0363E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.787972  -40.411995   -0.361479    0.126851   -0.928982  2451790.718550
# Heliocentric elements and errors
Epoch:              2451790.5000  =  2000/09/03
Mean Anomaly:            7.62420 +/-     0.003
Argument of Peri:       48.67922 +/-     0.005
Long of Asc Node:      255.58441 +/-     0.001
Inclination:             8.40159 +/-     0.000
Eccentricity:         0.33460524 +/-    0.0001
Semi-Major Axis:     56.89401176 +/-    0.0096
Time of Perihelion: 2448470.8668 +/-       1.6
Perihelion:          37.85697710 +/-    0.0083
Aphelion:            75.93104641 +/-    0.0138
Period (y)              429.1489 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.09379720 +/-    0.0007
Ecliptic Y          -24.28650399 +/-    0.0006
Ecliptic Z            5.05473334 +/-    0.0001
Ecliptic XDOT         0.00219609 +/-    0.0000
Ecliptic YDOT         0.00232440 +/-    0.0000
Ecliptic ZDOT         0.00022867 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.23388483 +/-    0.0007
Geocenter to KBO     37.30158633 +/-    0.0010
# Hcoef:  7.33

The following table shows the complete astrometric record for 13RV128. 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 (13RV128) followed by the observatory code and reference code for the source of the astrometry.

2000 09  03.217807 21 18 11.61   -07 32 13.2         13RV128   645  C~4qL7      
2000 09  03.218636 21 18 11.60   -07 32 13.3         13RV128   645  C~4qL7      
2000 09  03.221124 21 18 11.61   -07 32 13.1         13RV128   645  C~4qL7      
2000 09  27.131890 21 16 42.81   -07 41 45.4         13RV128   645  C~4qL7      
2000 09  27.132719 21 16 42.80   -07 41 45.5         13RV128   645  C~4qL7      
2004 09  16.319380 21 43 47.11   -04 59 37.0         13RV128   645  C~4qL7      
2004 09  16.322697 21 43 47.06   -04 59 36.8         13RV128   645  C~4qL7      
2008 10  30.177878 22 07 23.41   -02 39 51.8         13RV128   645  C~4qL7      
2008 10  30.178707 22 07 23.39   -02 39 52.1         13RV128   645  C~4qL7      
2008 10  30.181195 22 07 23.37   -02 39 52.6         13RV128   645  C~4qL7      
2009 09  16.292907 22 15 48.18   -01 41 54.3         13RV128   645  C~4qL7      
2009 09  16.293737 22 15 48.19   -01 41 54.6         13RV128   645  C~4qL7      
2009 09  16.296225 22 15 48.18   -01 41 54.1         13RV128   645  C~4qL7      
2011 12  01.267053 22 25 53.09   -00 51 08.6         13RV128   568  C~4qL7      
2011 12  01.272352 22 25 53.09   -00 51 08.7         13RV128   568  C~4qL7      
2011 12  01.277685 22 25 53.10   -00 51 08.6         13RV128   568  C~4qL7      
2011 12  01.283002 22 25 53.12   -00 51 08.7         13RV128   568  C~4qL7      
2012 08  21.468539 22 36 18.98   +00 26 23.0         13RV128   568  C~4qL7      
2012 08  21.480033 22 36 18.93   +00 26 22.7         13RV128   568  C~4qL7      
2013 09  13.184624 22 40 40.965  +00 54 16.62  23.1i 13RV128   W84  C~3wor      
2013 09  13.185990 22 40 40.965  +00 54 16.34  22.7z 13RV128   W84  C~3wor      
2013 09  30.064231 22 39 29.989  +00 45 49.86  23.8r 13RV128   W84  C~3wor      
2013 09  30.065689 22 39 29.992  +00 45 49.86  23.0i 13RV128   W84  C~3wor      
2013 10  10.100434 22 38 53.703  +00 40 54.20  23.6r 13RV128   W84  C~3wor      
2013 10  11.087587 22 38 50.447  +00 40 26.00  22.9z 13RV128   W84  C~3wor      
2013 10  12.055272 22 38 47.336  +00 39 58.40  23.1i 13RV128   W84  C~3wor      
2013 10  12.058085 22 38 47.318  +00 39 58.28  22.8z 13RV128   W84  C~3wor      
2013 11  23.056464 22 37 42.819  +00 25 04.39  23.7r 13RV128   W84  C~3wor      

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    -0.08
     2   0.0000      0.00    -0.09       0.00    -0.15
     3   0.0000      0.00     0.23       0.00     0.11
     4   0.0655      0.00     0.20       0.00     0.05
     5   0.0655      0.00     0.08       0.00    -0.04
     6   4.0359      0.00    -0.25       0.00    -0.01
     7   4.0359      0.00    -0.80       0.00     0.28
     8   8.1559      0.00     0.31       0.00     0.30
     9   8.1560      0.00     0.03       0.00     0.01
    10   8.1560      0.00    -0.23       0.00    -0.44
    11   9.0351      0.00     0.00       0.00     0.04
    12   9.0351      0.00     0.20       0.00    -0.23
    13   9.0351      0.00     0.22       0.00     0.34
    14  11.2418      0.00     0.24       0.00    -0.20
    15  11.2418      0.00     0.13       0.00    -0.27
    16  11.2418      0.00     0.17       0.00    -0.14
    17  11.2418      0.00     0.36       0.00    -0.21
    18  11.9651      0.00     0.07       0.00     0.17
    19  11.9651      0.00     0.11       0.00     0.16
    20  13.0266      0.00    -0.15       0.00     0.17
    21  13.0266      0.00    -0.05       0.00    -0.07
    22  13.0728      0.00    -0.18       0.00    -0.03
    23  13.0728      0.00    -0.05       0.00     0.02
    24  13.1003      0.00    -0.08       0.00     0.04
    25  13.1030      0.00    -0.16       0.00     0.12
    26  13.1056      0.00     0.05       0.00     0.07
    27  13.1057      0.00    -0.09       0.00     0.03
    28  13.2206      0.00    -0.25       0.00    -0.08

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.

13RV128    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        57.099    57.099    57.099
ecceobj         0.337     0.337     0.337
incobj          8.400     8.400     8.400
qmin           37.261    37.261    37.261
qmax           77.705    77.705    77.705
amean          56.931    56.931    56.931
amin           56.252    56.252    56.252
amax           57.767    57.767    57.767
emean           0.334     0.334     0.334
emin            0.325     0.325     0.325
emax            0.345     0.345     0.345
imean           9.832     9.833     9.832
imin            9.639     9.639     9.639
imax           10.048    10.048    10.047
excite_mean     0.376     0.376     0.376
fracstop        1.000     1.000     1.000
cjmean          3.082     3.082     3.082

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       177.8     177.7     177.8
kozaiamp        180.0     180.0     180.0