Orbit Fit and Astrometric record for 07DS101

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: 07DS101   
# Created Tue Oct 24 01:37:41 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   8.08y
# First observation: 2005/02/10
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000466   0.021738   0.000001  -0.000194   0.022055   0.000000
# Chi-squared of fit:    39.66 DOF:   52 RMS:  0.21
# Min/Max residuals:    -0.47    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.442161E-05  2.134915E-02 -2.294799E-07 -1.906706E-04  2.292385E-02 -1.855283E-03
# Covariance matrix:
  1.8808E-13 -1.3570E-13 -5.2336E-16  1.1583E-15  1.1774E-13 -7.3096E-13
 -1.3570E-13  1.4657E-13  7.5277E-16 -1.3485E-15 -9.1361E-14  8.4729E-13
 -5.2336E-16  7.5277E-16  8.4648E-14 -2.0861E-14  4.7386E-16  4.6691E-15
  1.1583E-15 -1.3485E-15 -2.0861E-14  1.2755E-14  9.2922E-16 -8.5383E-15
  1.1774E-13 -9.1361E-14  4.7386E-16  9.2922E-16  3.7923E-13 -6.0941E-13
 -7.3096E-13  8.4729E-13  4.6691E-15 -8.5383E-15 -6.0941E-13  5.3672E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.319070  138.223140   -0.055207    0.022719   -0.981728  2453411.813023
# Heliocentric elements and errors
Epoch:              2453410.5000  =  2005/02/09
Mean Anomaly:          269.75428 +/-     0.071
Argument of Peri:      211.78669 +/-     0.057
Long of Asc Node:       26.68861 +/-     0.011
Inclination:             1.38740 +/-     0.000
Eccentricity:         0.08723110 +/-    0.0001
Semi-Major Axis:     44.25655014 +/-    0.0049
Time of Perihelion: 2480368.5742 +/-      20.9
Perihelion:          40.39600268 +/-    0.0067
Aphelion:            48.11709760 +/-    0.0073
Period (y)              294.4249 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.29661718 +/-    0.0009
Ecliptic Y           29.66770554 +/-    0.0008
Ecliptic Z            1.00418013 +/-    0.0000
Ecliptic XDOT        -0.00153411 +/-    0.0000
Ecliptic YDOT        -0.00205591 +/-    0.0000
Ecliptic ZDOT        -0.00002780 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.60768819 +/-    0.0008
Geocenter to KBO     43.62269169 +/-    0.0012
# Hcoef:  6.85

The following table shows the complete astrometric record for 07DS101. 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 (07DS101) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.31228  09 24 20.03   +16 37 20.4   23.5g 07DS101   568  C~0VEW      
2005 02  10.39529  09 24 19.64   +16 37 22.3   23.9g 07DS101   568  C~0VEW      
2005 02  10.43481  09 24 19.45   +16 37 23.2   23.5g 07DS101   568  C~0VEW      
2005 02  15.33591  09 23 56.73   +16 39 08.0   23.3g 07DS101   568  C~0VEW      
2005 03  10.247691 09 22 18.18   +16 46 28.5   22.8V 07DS101   645  C~2KuA      
2005 03  10.248520 09 22 18.17   +16 46 28.7   22.0V 07DS101   645  C~2KuA      
2005 03  10.251008 09 22 18.15   +16 46 28.6   23.8V 07DS101   645  C~2KuA      
2005 04  12.26136  09 20 45.61   +16 52 46.8   23.1i 07DS101   568  C~0VEW      
2005 04  12.34223  09 20 45.47   +16 52 47.0   23.3i 07DS101   568  C~0VEW      
2005 04  12.36980  09 20 45.43   +16 52 47.2   23.2i 07DS101   568  C~0VEW      
2006 02  03.48138  09 29 43.82   +16 11 05.6         07DS101   568  C~0VEW      
2006 02  06.33314  09 29 30.61   +16 12 09.0   23.0r 07DS101   568  C~0VEW      
2006 02  06.37393  09 29 30.43   +16 12 09.8   22.8r 07DS101   568  C~0VEW      
2006 02  06.41210  09 29 30.27   +16 12 10.8   22.9r 07DS101   568  C~0VEW      
2006 11  23.52174  09 37 59.15   +15 28 48.1         07DS101   695  C~0VEW      
2006 11  25.47919  09 37 58.78   +15 28 53.3         07DS101   695  C~0VEW      
2007 02  14.46607  09 33 44.56   +15 50 57.6   23.2r 07DS101   568  C~0Vn4      
2007 02  14.46984  09 33 44.53   +15 50 57.8   22.7r 07DS101   568  C~0VEW      
2007 02  14.50376  09 33 44.38   +15 50 58.7   22.9r 07DS101   568  C~0VEW      
2007 02  14.53694  09 33 44.22   +15 50 59.3   22.8r 07DS101   568  C~0VEW      
2007 02  15.48068  09 33 39.85   +15 51 20.5   23.0r 07DS101   568  C~0VEW      
2007 02  18.31004  09 33 26.84   +15 52 22.9   22.9R 07DS101   568  Cu1674      
2007 02  18.32535  09 33 26.73   +15 52 23.0   22.9R 07DS101   568  Cu1674      
2007 02  18.34062  09 33 26.68   +15 52 23.3   22.8R 07DS101   568  Cu1674      
2007 02  20.39115  09 33 17.31   +15 53 08.0   22.8R 07DS101   568  Cu1674      
2007 02  20.41199  09 33 17.19   +15 53 08.7         07DS101   568  Cu1674      
2007 02  20.42957  09 33 17.11   +15 53 08.6         07DS101   568  Cu1674      
2013 03  13.14870  10 00 43.10   +13 27 13.1   22.7R 07DS101   G37  C~0qSl      
2013 03  13.19935  10 00 42.88   +13 27 14.2         07DS101   G37  C~0qSl      

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     0.06       0.00     0.02
  2   0.0002     -5.92     0.06       0.07     0.12
  3   0.0003     -8.79     0.01       0.08     0.15
  4   0.0138   -351.73    -0.36      -1.27     0.16
  5   0.0765  -1834.42    -0.05     -18.46    -0.38
  6   0.0765  -1834.62    -0.20     -18.32    -0.23
  7   0.0765  -1834.86    -0.30     -18.50    -0.41
  8   0.1669  -3215.72     0.13     -65.35     0.10
  9   0.1671  -3217.70     0.10     -65.77    -0.14
 10   0.1672  -3218.31     0.15     -65.76    -0.07
 11   0.9806   4918.86     0.26     -38.65    -0.09
 12   0.9884   4718.18     0.02     -38.58    -0.02
 13   0.9885   4715.47     0.22     -38.64    -0.07
 14   0.9886   4712.96     0.45     -38.42     0.16
 15   1.7829  12517.48    -0.07    -150.83     0.27
 16   1.7883  12510.70    -0.14    -147.65     0.21
 17   2.0100   8597.79     0.38     -79.49    -0.04
 18   2.0100   8597.32     0.18     -79.44     0.02
 19   2.0101   8594.97     0.26     -79.28     0.20
 20   2.0102   8592.59     0.25     -79.45     0.06
 21   2.0128   8525.95     0.00     -79.57     0.22
 22   2.0205   8327.81     0.01     -80.58     0.28
 23   2.0206   8326.27    -0.45     -80.99    -0.12
 24   2.0206   8325.49    -0.15     -80.94    -0.06
 25   2.0262   8182.88    -0.07     -81.85     0.01
 26   2.0263   8181.01    -0.47     -81.75     0.14
 27   2.0263   8179.95    -0.30     -82.21    -0.31
 28   8.0844  33911.37     0.08    -341.83    -0.08
 29   8.0846  33907.89    -0.06    -341.92    -0.10

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.

07DS101    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.988    44.002    43.973
ecceobj         0.083     0.083     0.083
incobj          1.390     1.390     1.390
qmin           39.685    39.699    39.668
qmax           48.651    48.689    48.664
amean          44.060    44.075    44.045
amin           43.710    43.716    43.698
amax           44.435    44.450    44.418
emean           0.079     0.079     0.079
emin            0.062     0.063     0.062
emax            0.096     0.096     0.096
imean           1.826     1.825     1.824
imin            1.002     1.005     0.998
imax            2.469     2.464     2.468
excite_mean     0.086     0.086     0.086
fracstop        1.000     1.000     1.000
cjmean          3.093     3.093     3.093

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       173.5     173.8     173.2
kozaiamp        179.9     180.0     180.0