Orbit Fit and Astrometric record for 508770

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: 508770    
# Created Fri Mar 29 01:08:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     24 observations of     24
# Arc:  21.36y
# First observation: 1995/11/18
#  Last observation: 2017/03/29
# Chi-squared of fit:   177.23 DOF:     42 RMS:  0.48
# Min/Max residuals:    -1.45    1.15
# Exact a, adot, b, bdot, g, gdot:
  1.562219E-05  1.900504E-02  7.351961E-06  5.456794E-04  2.134607E-02 -2.224868E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.006267   79.006222    0.384742   -0.000173   -0.915282  2450040.078708
# Heliocentric elements and errors
Epoch:              2450040.5000  =  1995/11/19
Mean Anomaly:          262.14157 +/-     0.000
Argument of Peri:      111.71226 +/-     0.000
Long of Asc Node:       78.73909 +/-     0.000
Inclination:             1.64642 +/-     0.000
Eccentricity:         0.12776914 +/-    0.0000
Semi-Major Axis:     46.23490483 +/-    0.0000
Time of Perihelion: 2481254.4792 +/-       0.0
Perihelion:          40.32751065 +/-    0.0000
Aphelion:            52.14229901 +/-    0.0000
Period (y)              314.3860 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            9.48863983 +/-    0.0000
Ecliptic Y           46.80507546 +/-    0.0000
Ecliptic Z           -0.00477169 +/-    0.0000
Ecliptic XDOT        -0.00243981 +/-    0.0000
Ecliptic YDOT         0.00018610 +/-    0.0000
Ecliptic ZDOT         0.00006982 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.75727370 +/-    0.0000
Geocenter to KBO     46.84714609 +/-    0.0000
# Hcoef:  7.15

The following table shows the complete astrometric record for 508770. 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 (508770) followed by the observatory code and reference code for the source of the astrometry.

1995 11  18.5780   05 12 10.88   +22 58 40.6   23.4R 508770    568  C26040      
1995 11  18.5903   05 12 10.82   +22 58 40.6         508770    568  C26040      
1995 11  18.6026   05 12 10.76   +22 58 40.6         508770    568  C26040      
1995 11  19.4540   05 12 07.11   +22 58 38.0         508770    568  C26040      
1995 11  19.4630   05 12 07.07   +22 58 38.3         508770    568  C26040      
1995 11  19.4943   05 12 06.90   +22 58 37.6         508770    568  C26040      
1995 11  27.4811   05 11 30.91   +22 57 59.1         508770    568  C26040      
1995 11  27.5080   05 11 30.78   +22 57 58.7         508770    568  C26040      
1995 11  27.5289   05 11 30.69   +22 57 58.6         508770    568  C26040      
1995 12  23.38840  05 09 28.23   +22 55 41.9         508770    568  C26491      
1995 12  23.49021  05 09 27.76   +22 55 41.2         508770    568  C26491      
1996 09  12.5725   05 19 10.46   +23 07 37.5   24. R 508770    568  C27786      
1996 09  13.5467   05 19 11.11   +23 07 39.0         508770    568  C27786      
1997 02  10.13579  05 11 15.96   +22 59 56.6         508770    697  C29272      
1997 02  10.18933  05 11 15.89   +22 59 56.3         508770    697  C29272      
1997 09  05.51484  05 23 41.22   +23 13 35.2         508770    675  Ca0008      
1997 09  06.52043  05 23 42.67   +23 13 37.0         508770    675  Ca0008      
1997 09  07.50109  05 23 44.01   +23 13 38.9   23.8R 508770    675  Ca0008      
2000 12  28.33316  05 32 54.51   +23 26 56.9   23.7R 508770    568  Cl2494      
2000 12  28.39865  05 32 54.19   +23 26 56.8   23.3R 508770    568  C52847      
2015 02  18.14772  06 39 57.70   +23 43 51.5   23.5R 508770    695  C~1M5z      
2015 02  18.19455  06 39 57.56   +23 43 51.7         508770    695  C~1M5z      
2017 03  24.24519  06 49 27.166  +23 37 20.46  23.9w 508770    568  C~2WWx      
2017 03  29.25484  06 49 28.286  +23 37 15.98  23.9w 508770    568  C~2WWx      

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    -0.22       0.00    -1.45
     2   0.0000      0.00    -0.30       0.00    -1.39
     3   0.0001      0.00    -0.39       0.00    -1.33
     4   0.0024      0.00     0.33       0.00     0.03
     5   0.0024      0.00     0.33       0.00     0.37
     6   0.0025      0.00    -0.13       0.00    -0.19
     7   0.0244      0.00     0.07       0.00     0.27
     8   0.0244      0.00     0.01       0.00     0.01
     9   0.0245      0.00     0.14       0.00     0.02
    10   0.0953      0.00     0.00       0.00     0.08
    11   0.0956      0.00     0.17       0.00    -0.07
    12   0.8186      0.00    -0.08       0.00     0.46
    13   0.8213      0.00    -0.32       0.00     0.99
    14   1.2308      0.00    -0.08       0.00    -0.05
    15   1.2310      0.00     0.38       0.00    -0.25
    16   1.7986      0.00     0.18       0.00     0.59
    17   1.8013      0.00     0.13       0.00     0.76
    18   1.8040      0.00     0.27       0.00     1.15
    19   5.1109      0.00    -0.08       0.00     0.18
    20   5.1111      0.00    -0.17       0.00     0.26
    21  19.2514      0.00    -0.18       0.00    -0.10
    22  19.2515      0.00    -0.15       0.00    -0.02
    23  21.3461      0.00     0.09       0.00    -0.06
    24  21.3598      0.00     0.16       0.00    -0.18

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.

508770    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.712    46.712    46.713
ecceobj         0.124     0.124     0.124
incobj          1.644     1.644     1.644
qmin           39.899    39.914    39.906
qmax           53.467    53.532    53.488
amean          46.518    46.517    46.518
amin           46.126    46.118    46.123
amax           46.965    46.965    46.946
emean           0.125     0.125     0.125
emin            0.112     0.113     0.112
emax            0.139     0.140     0.140
imean           0.589     0.589     0.589
imin            0.044     0.044     0.040
imax            0.990     0.990     0.991
excite_mean     0.126     0.126     0.126
fracstop        1.000     1.000     1.000
cjmean          3.113     3.113     3.113

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       181.0     180.9     180.9
kozaiamp        179.9     179.9     180.0