Orbit Fit and Astrometric record for 00SR331

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: 00SR331   
# Created Wed Oct 18 01:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:  14.40y
# First observation: 2000/09/23
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.002057   0.048224   0.000144  -0.002489   0.033254   0.000000
# Chi-squared of fit:    39.88 DOF:   36 RMS:  0.24
# Min/Max residuals:    -0.53    0.37
# Exact a, adot, b, bdot, g, gdot:
  2.037396E-05  4.327794E-02 -2.884621E-06 -2.216613E-03  3.232644E-02 -2.076861E-03
# Covariance matrix:
  2.1920E-13 -5.6230E-14 -3.9686E-16  2.9930E-15  1.3226E-13 -9.5884E-14
 -5.6230E-14  1.4095E-13  4.7092E-15 -7.5056E-15  4.4754E-14  2.0655E-13
 -3.9686E-16  4.7092E-15  8.5131E-14 -7.8599E-15  3.1288E-15  6.8101E-15
  2.9930E-15 -7.5056E-15 -7.8599E-15  3.5639E-15 -2.0020E-15 -1.1318E-14
  1.3226E-13  4.4754E-14  3.1288E-15 -2.0020E-15  2.0176E-13  3.7995E-14
 -9.5884E-14  2.0655E-13  6.8101E-15 -1.1318E-14  3.7995E-14  3.1411E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.052414   61.015093    0.869012   -0.026299   -0.489783  2451810.951933
# Heliocentric elements and errors
Epoch:              2451810.5000  =  2000/09/23
Mean Anomaly:          355.17733 +/-     0.001
Argument of Peri:      238.99937 +/-     0.003
Long of Asc Node:      194.50885 +/-     0.001
Inclination:             4.24938 +/-     0.000
Eccentricity:         0.44668410 +/-    0.0001
Semi-Major Axis:     56.30470755 +/-    0.0065
Time of Perihelion: 2453877.7839 +/-       0.4
Perihelion:          31.15428976 +/-    0.0048
Aphelion:            81.45512535 +/-    0.0100
Period (y)              422.4986 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.97161908 +/-    0.0002
Ecliptic Y           27.03414248 +/-    0.0004
Ecliptic Z           -1.64732198 +/-    0.0000
Ecliptic XDOT        -0.00330370 +/-    0.0000
Ecliptic YDOT         0.00161883 +/-    0.0000
Ecliptic ZDOT        -0.00017794 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.44282343 +/-    0.0003
Geocenter to KBO     30.93443232 +/-    0.0004
# Hcoef:  8.77

The following table shows the complete astrometric record for 00SR331. 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 (00SR331) followed by the observatory code and reference code for the source of the astrometry.

2000 09  23.45119  03 58 08.21   +17 22 25.9   23.7R 00SR331   568  Cc1430      
2000 09  23.50797  03 58 08.09   +17 22 25.2   23.8R 00SR331   568  Cc1430      
2000 09  23.58243  03 58 07.91   +17 22 24.2         00SR331   568  Cc1430      
2000 09  24.45865  03 58 05.89   +17 22 11.5   23.6R 00SR331   568  Cc1430      
2000 09  24.52072  03 58 05.75   +17 22 10.7   23.5R 00SR331   568  Cc1430      
2000 09  24.58576  03 58 05.59   +17 22 09.9   23.5R 00SR331   568  Cc1430      
2000 11  28.37485  03 52 37.59   +17 01 26.6   23.6R 00SR331   675  C42427      
2000 11  28.40898  03 52 37.37   +17 01 25.4   23.6R 00SR331   675  C42427      
2000 11  28.44871  03 52 37.09   +17 01 24.8   23.2R 00SR331   675  C42427      
2001 01  23.18819  03 48 21.70   +16 50 14.3   24. R 00SR331   675  Cc7859      
2001 01  23.27708  03 48 21.52   +16 50 14.4         00SR331   675  Cc7859      
2001 02  23.01319  03 48 27.43   +16 53 01.2         00SR331   309  Cc7859      
2001 02  24.01765  03 48 29.74   +16 53 13.4         00SR331   309  Cc7859      
2001 11  15.19997  04 04 31.94   +17 28 53.5   23.5R 00SR331   309  Ci2635      
2001 11  15.23303  04 04 31.74   +17 28 52.9   23.5R 00SR331   309  Ci2635      
2002 11  29.26585  04 13 38.93   +17 45 31.7         00SR331   568  Ci2635      
2002 11  30.26330  04 13 32.52   +17 45 14.3   23.4R 00SR331   568  Ci2635      
2002 11  30.29912  04 13 32.29   +17 45 13.8   23.5R 00SR331   568  Ci2635      
2002 11  30.33654  04 13 32.05   +17 45 13.1         00SR331   568  Ci2635      
2015 02  18.14247  06 14 28.31   +19 07 27.1   21.5R 00SR331   695  C~1M60      
2015 02  18.18999  06 14 28.16   +19 07 27.6         00SR331   695  C~1M60      

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     0.16       0.00     0.37
  2   0.0002     -1.82     0.33      -0.34     0.37
  3   0.0004     -4.55     0.24      -0.80     0.36
  4   0.0028    -35.44    -0.40      -7.39    -0.52
  5   0.0029    -37.56    -0.23      -7.77    -0.53
  6   0.0031    -39.97    -0.22      -8.09    -0.46
  7   0.1805  -4896.10     0.31    -259.10     0.08
  8   0.1806  -4899.44     0.17    -259.61    -0.41
  9   0.1807  -4903.50    -0.17    -259.36    -0.13
 10   0.3333  -8631.31     0.06    -139.21    -0.20
 11   0.3335  -8633.82    -0.02    -138.56     0.06
 12   0.4177  -8515.02    -0.05       6.32    -0.10
 13   0.4204  -8479.96    -0.18      11.14    -0.12
 14   1.1437   5461.11    -0.15    -706.93     0.30
 15   1.1438   5458.19     0.02    -706.96     0.33
 16   2.1816  13346.71    -0.08   -1196.99     0.12
 17   2.1843  13253.11     0.01   -1197.42     0.16
 18   2.1844  13249.77     0.08   -1197.31     0.26
 19   2.1845  13246.26     0.13   -1197.37     0.19
 20  14.4030 130532.83     0.04   -7218.18    -0.14
 21  14.4031 130529.85    -0.04   -7217.53     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.

00SR331    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        56.241    56.260    56.221
ecceobj         0.446     0.446     0.446
incobj          4.249     4.249     4.249
qmin           30.659    30.646    30.633
qmax           81.511    81.643    81.730
amean          55.462    55.462    55.462
amin           54.760    54.760    54.756
amax           56.370    56.403    56.429
emean           0.437     0.437     0.437
emin            0.427     0.427     0.427
emax            0.447     0.448     0.448
imean           4.485     4.472     4.452
imin            4.417     4.382     4.356
imax            4.550     4.549     4.550
excite_mean     0.444     0.444     0.444
fracstop        1.000     1.000     1.000
cjmean          2.977     2.977     2.977

libcent 0       181.1     180.6     178.3
libamp  0        67.9      70.9      72.2
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       225.7     224.4     219.5
kozaiamp        180.0     180.0     179.9