Orbit Fit and Astrometric record for 309139

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: 309139    
# Created Sat Oct 21 01:36:42 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   70 observations of   71
# Arc:   9.59y
# First observation: 2001/08/05
#  Last observation: 2011/03/10
# Chi-squared of fit:   196.69 DOF:  134 RMS:  0.30
# Min/Max residuals:    -0.58    0.81
# Exact a, adot, b, bdot, g, gdot:
  3.685699E-05  2.364073E-01 -7.278759E-06 -7.313693E-02  1.066108E-01 -7.299434E-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
   30.237140   -1.614026    0.727961    0.357131   -0.612995  2452126.852003
# Heliocentric elements and errors
Epoch:              2452126.5000  =  2001/08/05
Mean Anomaly:          352.14716 +/-     0.000
Argument of Peri:      134.58215 +/-     0.000
Long of Asc Node:      233.97645 +/-     0.000
Inclination:            31.58883 +/-     0.000
Eccentricity:         0.37889664 +/-    0.0000
Semi-Major Axis:     15.91205702 +/-    0.0000
Time of Perihelion: 2452632.2227 +/-       0.0
Perihelion:           9.88303200 +/-    0.0000
Aphelion:            21.94108204 +/-    0.0000
Period (y)               63.4743 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            8.79206805 +/-    0.0000
Ecliptic Y           -0.97006103 +/-    0.0000
Ecliptic Z            4.72351424 +/-    0.0000
Ecliptic XDOT         0.00094597 +/-    0.0000
Ecliptic YDOT         0.00604816 +/-    0.0000
Ecliptic ZDOT        -0.00171687 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   10.02764531 +/-    0.0000
Geocenter to KBO      9.37995528 +/-    0.0000
# Hcoef:  9.84

The following table shows the complete astrometric record for 309139. 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 (309139) followed by the observatory code and reference code for the source of the astrometry.

2001 08  05.35126  23 02 10.52   +26 53 39.5   19.9R 309139    644  C~11R0      
2001 08  05.37211  23 02 10.24   +26 53 40.7   19.8R 309139    644  C~11R0      
2002 09  27.33175  23 54 48.33   +27 36 18.6   19.6R 309139    644  C~11R0      
2002 09  27.37095  23 54 47.68   +27 36 12.7   19.6R 309139    644  C~11R0      
2002 09  28.31940  23 54 32.57   +27 33 50.7   19.6R 309139    644  C~11R0      
2002 09  28.34648  23 54 32.14   +27 33 45.9   19.8R 309139    644  C~11R0      
2002 09  28.37009  23 54 31.74   +27 33 42.5   20.0R 309139    644  C~11R0      
2003 09  19.38917  01 04 18.60   +27 52 07.0   20.0  309139    644  C~08C8      
2003 09  19.41031  01 04 18.30   +27 52 05.5   19.8  309139    644  C~08C8      
2003 09  19.43128  01 04 18.00   +27 52 03.0   19.9  309139    644  C~08C8      
2003 10  02.18297  01 01 01.32   +27 28 20.3   20.5V 309139    691  C~08C8      
2003 10  02.20904  01 01 00.88   +27 28 17.0   20.5V 309139    691  C~08C8      
2003 10  02.23511  01 01 00.45   +27 28 13.6   20.5V 309139    691  C~08C8      
2003 11  18.06666  00 49 55.24   +25 08 16.1   20.9V 309139    691  C~08C8      
2003 11  18.09444  00 49 54.97   +25 08 10.5   20.7V 309139    691  C~08C8      
2003 11  18.12307  00 49 54.69   +25 08 04.8   20.6V 309139    691  C~08C8      
2003 11  21.09027  00 49 29.32   +24 58 10.5   20.1  309139    644  C~08C8      
2003 11  21.11169  00 49 29.18   +24 58 06.5   20.2  309139    644  C~08C8      
2003 11  21.13321  00 49 28.96   +24 58 01.7   20.1  309139    644  C~08C8      
2005 10  22.23623  02 58 58.15   +21 59 02.2   20.0V 309139    691  C~08C8      
2005 10  22.25349  02 58 57.88   +21 59 00.5   19.9V 309139    691  C~08C8      
2005 10  22.27084  02 58 57.62   +21 58 58.0   20.1V 309139    691  C~08C8      
2005 10  27.49043  02 57 34.46   +21 47 47.2   20.3V 309139    691  C~08C8      
2005 10  27.50774  02 57 34.17   +21 47 45.1   20.1V 309139    691  C~08C8      
2005 10  27.52500  02 57 33.86   +21 47 42.8   20.5V 309139    691  C~08C8      
2005 10  31.23403  02 56 33.15   +21 39 27.1   20.1V 309139    691  C~08C8      
2005 10  31.25138  02 56 32.85   +21 39 24.5   20.2V 309139    691  C~08C8      
2005 10  31.26872  02 56 32.57   +21 39 22.3   20.1V 309139    691  C~08C8      
2005 12  04.07387  02 47 36.71   +20 18 37.0   20.7V 309139    691  C~08C8      
2005 12  04.09480  02 47 36.43   +20 18 34.0   20.4V 309139    691  C~08C8      
2005 12  04.11917  02 47 36.09   +20 18 30.5   20.3V 309139    691  C~08C8      
2005 12  07.06549  02 46 57.59   +20 11 36.5   20.9V 309139    691  C~08C8      
2005 12  07.09301  02 46 57.23   +20 11 32.7   20.6V 309139    691  C~08C8      
2005 12  07.11698  02 46 56.90   +20 11 29.4   20.4V 309139    691  C~08C8      
2006 09  28.35404  03 54 23.18   +18 51 20.7   20.2V 309139    G96  C~08C8      
2006 09  28.36398  03 54 23.11   +18 51 19.8   20.3V 309139    G96  C~08C8      
2006 09  28.37391  03 54 23.04   +18 51 19.2   20.3V 309139    G96  C~08C8      
2006 09  28.38374  03 54 23.00   +18 51 18.1   20.4V 309139    G96  C~08C8      
2006 10  12.42507  03 52 24.67   +18 28 55.3         309139    691  C~08C8      
2006 10  12.44242  03 52 24.51   +18 28 53.4         309139    691  C~08C8      
2006 10  12.45984  03 52 24.29   +18 28 51.5         309139    691  C~08C8      
2006 10  16.46468  03 51 39.44   +18 21 52.3   20.8V 309139    691  C~08C8      
2006 10  16.48210  03 51 39.24   +18 21 50.7   20.6V 309139    691  C~08C8      
2006 10  16.49947  03 51 39.01   +18 21 48.4   20.8V 309139    691  C~08C8      
2006 10  28.29766  03 49 03.18   +17 59 59.1   19.9V 309139    G96  C~08C8      
2006 10  28.30741  03 49 03.03   +17 59 57.8   20.1V 309139    G96  C~08C8      
2006 10  28.31722  03 49 02.89   +17 59 57.0   20.4V 309139    G96  C~08C8      
2006 10  28.32700  03 49 02.78   +17 59 56.1   20.2V 309139    G96  C~08C8      
2006 12  14.24201  03 36 42.26   +16 29 33.8   20.3V 309139    G96  Ct2655      
2006 12  14.24763  03 36 42.15   +16 29 33.3   20.5V 309139    G96  Ct2655      
2006 12  14.25333  03 36 42.12   +16 29 32.7   20.5V 309139    G96  Ct2655      
2006 12  14.25889  03 36 42.01   +16 29 32.2   20.4V 309139    G96  Ct2655      
2006 12  16.07676  03 36 17.21   +16 26 26.2         309139    691  Ct2655      
2006 12  16.09770  03 36 16.91   +16 26 23.9         309139    691  Ct2655      
2006 12  16.15305  03 36 16.13   +16 26 18.3         309139    691  Ct2655      
2007 10  25.47694  04 34 08.72   +14 01 00.4   20.3V 309139    G96  C~08C8      
2007 10  25.48686  04 34 08.58   +14 00 59.4   19.8V 309139    G96  C~08C8      
2007 10  25.49701  04 34 08.43   +14 00 58.2   20.7V 309139    G96  C~08C8      
2007 10  25.50709  04 34 08.29   +14 00 57.4   20.5V 309139    G96  C~08C8      
2007 11  08.35566  04 31 09.15   +13 36 17.2   20.1V 309139    G96  C~08C8      
2007 11  08.36589  04 31 09.04   +13 36 15.8   19.9V 309139    G96  C~08C8      
2007 11  08.37544  04 31 08.86   +13 36 14.6   20.1V 309139    G96  C~08C8      
2007 11  08.38507  04 31 08.72   +13 36 13.5   20.0V 309139    G96  C~08C8      
2007 12  19.24260  04 20 29.29   +12 32 58.3   20.1V 309139    G96  C~08C8      
2007 12  19.25051  04 20 29.18   +12 32 57.3   20.0V 309139    G96  C~08C8      
2007 12  19.25826  04 20 29.04   +12 32 57.1   20.1V 309139    G96  C~08C8      
2007 12  19.26602  04 20 28.93   +12 32 56.2   20.0V 309139    G96  C~08C8      
2011 01  09.30440  05 59 54.96   +01 23 27.0   20.8R 309139    695  C~0U44      
2011 01  09.30860  05 59 54.89   +01 23 27.0         309139    695  C~0U44      
2011 03  10.10947  05 52 58.36   +02 05 08.7   20.8R 309139    688  C~0Trn      
2011 03  10.17178  05 52 58.43   +02 05 13.2         309139    688  C~0Trn      

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 (   0.05)      0.00 (   2.70)
  2   0.0001      0.00    -0.28       0.00    -0.15
  3   1.1444      0.00     0.38       0.00     0.48
  4   1.1445      0.00     0.24       0.00     0.42
  5   1.1471      0.00     0.19       0.00     0.37
  6   1.1471      0.00     0.36       0.00    -0.32
  7   1.1472      0.00     0.12       0.00    -0.13
  8   2.1219      0.00    -0.23       0.00     0.00
  9   2.1220      0.00    -0.02       0.00     0.43
 10   2.1221      0.00     0.15       0.00    -0.15
 11   2.1570      0.00     0.59       0.00     0.09
 12   2.1570      0.00     0.40       0.00     0.18
 13   2.1571      0.00     0.38       0.00     0.17
 14   2.2853      0.00     0.35       0.00    -0.04
 15   2.2854      0.00     0.21       0.00    -0.10
 16   2.2855      0.00     0.04       0.00    -0.08
 17   2.2936      0.00     0.02       0.00     0.09
 18   2.2937      0.00     0.61       0.00     0.34
 19   2.2937      0.00     0.01       0.00    -0.18
 20   4.2132      0.00     0.13       0.00     0.11
 21   4.2133      0.00     0.18       0.00     0.55
 22   4.2133      0.00     0.41       0.00     0.21
 23   4.2276      0.00     0.30       0.00     0.39
 24   4.2277      0.00     0.21       0.00     0.60
 25   4.2277      0.00    -0.20       0.00     0.60
 26   4.2379      0.00     0.14       0.00     0.77
 27   4.2379      0.00     0.03       0.00     0.51
 28   4.2380      0.00     0.22       0.00     0.65
 29   4.3305      0.00     0.19       0.00     0.32
 30   4.3306      0.00     0.29       0.00     0.25
 31   4.3306      0.00     0.19       0.00     0.18
 32   4.3387      0.00     0.39       0.00     0.21
 33   4.3388      0.00     0.33       0.00     0.21
 34   4.3389      0.00     0.04       0.00     0.22
 35   5.1472      0.00     0.08       0.00     0.04
 36   5.1472      0.00    -0.02       0.00     0.00
 37   5.1472      0.00    -0.12       0.00     0.27
 38   5.1472      0.00     0.22       0.00     0.03
 39   5.1857      0.00    -0.28       0.00     0.42
 40   5.1857      0.00     0.17       0.00     0.30
 41   5.1858      0.00    -0.27       0.00     0.20
 42   5.1968      0.00    -0.03       0.00     0.13
 43   5.1968      0.00     0.12       0.00     0.40
 44   5.1968      0.00    -0.19       0.00    -0.04
 45   5.2291      0.00     0.11       0.00    -0.39
 46   5.2292      0.00     0.03       0.00    -0.58
 47   5.2292      0.00     0.10       0.00    -0.26
 48   5.2292      0.00     0.63       0.00    -0.04
 49   5.3577      0.00     0.24       0.00    -0.34
 50   5.3577      0.00    -0.21       0.00    -0.25
 51   5.3577      0.00     0.56       0.00    -0.26
 52   5.3577      0.00     0.09       0.00    -0.19
 53   5.3627      0.00     0.62       0.00     0.53
 54   5.3628      0.00     0.42       0.00     0.34
 55   5.3629      0.00     0.13       0.00     0.32
 56   6.2207      0.00     0.74       0.00    -0.54
 57   6.2208      0.00     0.36       0.00    -0.47
 58   6.2208      0.00    -0.13       0.00    -0.58
 59   6.2208      0.00    -0.48       0.00    -0.29
 60   6.2587      0.00     0.21       0.00     0.56
 61   6.2588      0.00     0.81       0.00     0.25
 62   6.2588      0.00     0.21       0.00     0.06
 63   6.2588      0.00     0.23       0.00    -0.02
 64   6.3707      0.00    -0.10       0.00    -0.05
 65   6.3707      0.00     0.02       0.00    -0.47
 66   6.3707      0.00    -0.34       0.00    -0.11
 67   6.3707      0.00    -0.26       0.00    -0.44
 68   9.4290      0.00     0.33       0.00     0.30
 69   9.4290      0.00     0.15       0.00     0.29
 70   9.5928      0.00     0.09       0.00    -0.21
 71   9.5929      0.00     0.07       0.00     0.24

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.

309139    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        15.970    15.970    15.971
ecceobj         0.381     0.381     0.381
incobj         31.587    31.587    31.587
qmin            9.887     9.887     9.887
qmax           22.054    22.053    22.054
amean          15.848    15.849    15.848
amin           15.767    15.769    15.766
amax           15.970    15.970    15.970
emean           0.373     0.373     0.373
emin            0.365     0.365     0.365
emax            0.381     0.381     0.381
imean          32.593    32.593    32.594
imin           32.545    32.545    32.545
imax           32.627    32.627    32.627
excite_mean     0.655     0.655     0.655
fracstop        0.000     0.000     0.000
cjmean          3.039     3.039     3.040

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       135.3     135.3     135.3
kozaiamp          0.8       0.8       0.8