Orbit Fit and Astrometric record for 04PW107

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: 04PW107   
# Created Thu Dec 14 02:37:22 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   5.34y
# First observation: 2003/09/15
#  Last observation: 2009/01/16
Preliminary a, adot, b, bdot, g, gdot:
   0.001033   0.027228  -0.000043  -0.001121   0.026077   0.000000
# Chi-squared of fit:   481.35 DOF:   48 RMS:  0.75
# Min/Max residuals:    -2.92    1.21
# Exact a, adot, b, bdot, g, gdot:
  2.354175E-05  2.788954E-02 -5.290724E-07 -1.150007E-03  2.636734E-02 -2.161855E-03
# Covariance matrix:
  5.3506E-13 -4.0776E-13 -1.5669E-14  1.5632E-14 -1.8477E-13 -2.1998E-12
 -4.0776E-13  3.9292E-13  1.6552E-14 -1.6530E-14  1.8271E-13  2.3162E-12
 -1.5669E-14  1.6552E-14  1.9729E-13 -5.3612E-14  7.3182E-15  1.0294E-13
  1.5632E-14 -1.6530E-14 -5.3612E-14  2.0476E-14 -7.1385E-15 -1.0285E-13
 -1.8477E-13  1.8271E-13  7.3182E-15 -7.1385E-15  2.0910E-13  1.1027E-12
 -2.1998E-12  2.3162E-12  1.0294E-13 -1.0285E-13  1.1027E-12  1.4384E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.580543  -15.026607   -0.129901    0.027603   -1.000173  2452898.361303
# Heliocentric elements and errors
Epoch:              2452890.5000  =  2003/09/08
Mean Anomaly:          329.20556 +/-     0.040
Argument of Peri:      186.54901 +/-     0.055
Long of Asc Node:      198.17348 +/-     0.003
Inclination:             2.82583 +/-     0.000
Eccentricity:         0.13005968 +/-    0.0001
Semi-Major Axis:     43.56062347 +/-    0.0029
Time of Perihelion: 2461873.2516 +/-      11.7
Perihelion:          37.89514279 +/-    0.0048
Aphelion:            49.22610416 +/-    0.0053
Period (y)              287.5076 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.61224068 +/-    0.0006
Ecliptic Y           -9.95876006 +/-    0.0002
Ecliptic Z            1.04609141 +/-    0.0000
Ecliptic XDOT         0.00053222 +/-    0.0000
Ecliptic YDOT         0.00284836 +/-    0.0000
Ecliptic ZDOT        -0.00012539 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.92238248 +/-    0.0006
Geocenter to KBO     37.92570592 +/-    0.0007
# Hcoef:  6.55

The following table shows the complete astrometric record for 04PW107. 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 (04PW107) followed by the observatory code and reference code for the source of the astrometry.

2003 09  15.86056  23 02 12.35   -04 27 40.6         04PW107   246  C~05DZ      
2004 08  13.34864  23 10 43.29   -03 38 21.2   21.3R 04PW107   807  Cl2777      
2004 08  14.25534  23 10 39.51   -03 38 44.5         04PW107   807  Cl2777      
2004 08  14.36476  23 10 39.05   -03 38 47.4         04PW107   807  Cl2777      
2004 09  11.25912  23 08 31.30   -03 52 18.7   22.0R 04PW107   304  Cl4404      
2004 09  11.28127  23 08 31.20   -03 52 19.3         04PW107   304  Cl4404      
2004 10  12.15461  23 06 15.97   -04 07 19.2   22.2R 04PW107   695  Cl8416      
2004 10  12.26530  23 06 15.50   -04 07 22.0         04PW107   695  Cl8416      
2004 11  10.21786  23 04 56.11   -04 16 57.2   22.0R 04PW107   695  Cl9851      
2004 11  11.18806  23 04 54.65   -04 17 09.4         04PW107   695  Cl9851      
2005 08  08.14718  23 17 05.66   -03 02 26.9   21.9R 04PW107   807  Co3996      
2005 08  08.27532  23 17 05.17   -03 02 30.0         04PW107   807  Co3996      
2005 08  09.15191  23 17 01.79   -03 02 51.0         04PW107   807  Co3996      
2006 07  28.34233  23 23 44.48   -02 24 42.6   22.2R 04PW107   304  Cr5543      
2006 07  28.41742  23 23 44.19   -02 24 44.2         04PW107   304  Cr5543      
2006 10  19.19016  23 17 53.05   -03 02 58.8   22.2R 04PW107   695  Ct0488      
2006 10  20.18151  23 17 49.70   -03 03 19.7         04PW107   695  Ct0488      
2006 10  20.28430  23 17 49.30   -03 03 22.5         04PW107   695  Ct0488      
2007 11  11.08833  23 22 50.45   -02 36 47.2   22.8R 04PW107   688  Cw6855      
2007 11  11.16291  23 22 50.29   -02 36 48.3         04PW107   688  Cw6855      
2008 05  18.77046  23 35 31.01   -01 19 40.8   22.6R 04PW107   250  S~06Ak      
2008 05  18.77671  23 35 31.02   -01 19 40.9         04PW107   250  S~06Ak      
2008 05  18.78296  23 35 31.03   -01 19 41.0         04PW107   250  S~06Ak      
2008 05  18.78990  23 35 31.03   -01 19 41.0         04PW107   250  S~06Ak      
2009 01  16.061354 23 30 01.08   -01 58 25.2         04PW107   645  C~1PqZ      
2009 01  16.062183 23 30 01.08   -01 58 25.1         04PW107   645  C~1PqZ      
2009 01  16.064671 23 30 01.09   -01 58 25.1         04PW107   645  C~1PqZ      

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    -1.41       0.00    -0.03
  2   0.9103   8198.90     0.21    -226.29    -0.21
  3   0.9128   8137.61     0.31    -225.82     0.02
  4   0.9131   8130.13     0.41    -225.83    -0.07
  5   0.9895   6050.55    -0.21    -232.82     0.58
  6   0.9895   6048.93    -0.09    -232.79     0.61
  7   1.0740   3833.55     1.00    -279.74    -0.44
  8   1.0743   3825.97     0.40    -279.60    -0.12
  9   1.1536   2508.00     0.04    -351.25     0.02
 10   1.1563   2483.14     0.28    -354.07    -0.05
 11   1.8954  14330.55     0.32    -466.57     0.08
 12   1.8957  14322.54     0.41    -466.57    -0.03
 13   1.8981  14267.47     0.08    -466.20    -0.01
 14   2.8651  20762.74     0.76    -713.18     0.01
 15   2.8653  20758.07    -0.12    -712.95     0.14
 16   3.0919  14975.23    -2.92    -773.19    -2.40
 17   3.0947  14920.59     0.65    -772.89     0.05
 18   3.0949  14913.94     0.10    -773.13    -0.02
 19   4.1539  19724.56    -0.53   -1065.54     0.29
 20   4.1541  19721.90    -0.60   -1065.62     0.37
 21   4.6733  32226.05     0.13   -1276.70     1.21
 22   4.6733  32226.16    -0.12   -1276.85     1.05
 23   4.6733  32226.26    -0.37   -1277.00     0.89
 24   4.6733  32226.26    -0.77   -1277.00     0.88
 25   5.3366  26652.37     0.71   -1475.95    -0.99
 26   5.3366  26652.41     0.69   -1475.86    -0.90
 27   5.3366  26652.55     0.67   -1475.92    -0.95

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.

04PW107    quality flag:2

Type:       SCATNEAR  SCATNEAR    7:4EEE

axisobj        44.047    44.056    44.038
ecceobj         0.138     0.139     0.138
incobj          2.817     2.817     2.817
qmin           37.202    36.755    37.345
qmax           50.812    51.253    50.627
amean          43.696    43.686    43.726
amin           43.287    43.248    43.270
amax           44.236    44.240    44.207
emean           0.110     0.106     0.130
emin            0.073     0.053     0.114
emax            0.149     0.159     0.145
imean           4.344     4.363     4.327
imin            3.244     3.231     3.176
imax            5.343     5.534     5.190
excite_mean     0.134     0.132     0.151
fracstop        1.000     1.000     1.000
cjmean          3.075     3.075     3.070

libcent 0      -180.0    -180.0     181.5
libamp  0      -180.0    -180.0     157.3
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       181.7     181.8     185.1
kozaiamp        180.0     180.0     180.0