Orbit Fit and Astrometric record for 08SP266

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: 08SP266   
# Created Tue Oct 24 01:37:46 2017
# Orbit generated from Bernstein formalism
# Fitting   65 observations of   73
# Arc:  11.00y
# First observation: 2006/09/17
#  Last observation: 2017/09/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.001850   0.031146   0.000651  -0.008567   0.031229   0.000000
# Chi-squared of fit:    76.43 DOF:  124 RMS:  0.19
# Min/Max residuals:    -0.74    0.50
# Exact a, adot, b, bdot, g, gdot:
  1.666580E-05  3.015059E-02 -3.499559E-06 -8.255629E-03  2.835304E-02 -9.321856E-04
# Covariance matrix:
  1.7382E-13 -4.7894E-14 -1.3817E-14  8.7968E-15 -9.9736E-15 -1.0097E-13
 -4.7894E-14  2.4535E-14  9.2901E-15 -6.1219E-15  1.7773E-14  6.9817E-14
 -1.3817E-14  9.2901E-15  1.2776E-13 -1.8356E-14  5.9656E-15  2.9311E-14
  8.7968E-15 -6.1219E-15 -1.8356E-14  4.1381E-15 -5.3848E-15 -1.9357E-14
 -9.9736E-15  1.7773E-14  5.9656E-15 -5.3848E-15  8.9109E-14  5.8339E-14
 -1.0097E-13  6.9817E-14  2.9311E-14 -1.9357E-14  5.8339E-14  2.2067E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.550005   -1.031836    0.080264   -0.218180   -0.980518  2453995.800907
# Heliocentric elements and errors
Epoch:              2453990.5000  =  2006/09/12
Mean Anomaly:          346.11986 +/-     0.007
Argument of Peri:      236.90801 +/-     0.008
Long of Asc Node:      141.20685 +/-     0.000
Inclination:            19.51048 +/-     0.000
Eccentricity:         0.11795052 +/-    0.0000
Semi-Major Axis:     40.89159882 +/-    0.0019
Time of Perihelion: 2457672.9843 +/-       1.7
Perihelion:          36.06841353 +/-    0.0021
Aphelion:            45.71478410 +/-    0.0025
Period (y)              261.4926 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.42128288 +/-    0.0004
Ecliptic Y           -0.72136119 +/-    0.0000
Ecliptic Z           -7.66388583 +/-    0.0001
Ecliptic XDOT        -0.00020390 +/-    0.0000
Ecliptic YDOT         0.00291092 +/-    0.0000
Ecliptic ZDOT        -0.00075863 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.24807290 +/-    0.0004
Geocenter to KBO     35.26958631 +/-    0.0004
# Hcoef:  6.06

The following table shows the complete astrometric record for 08SP266. 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 (08SP266) followed by the observatory code and reference code for the source of the astrometry.

2006 09  17.300153 00 16 28.90   -11 54 31.4   21.3V 08SP266   645  C~1RHw      
2006 09  17.300982 00 16 28.89   -11 54 31.4   20.8V 08SP266   645  C~1RHw      
2006 09  17.303470 00 16 28.88   -11 54 31.5   22.4V 08SP266   645  C~1RHw      
2006 09  29.215115 00 15 28.57   -12 01 55.6   21.4V 08SP266   645  C~1RHw      
2006 09  29.215944 00 15 28.56   -12 01 55.6   20.8V 08SP266   645  C~1RHw      
2006 09  29.218432 00 15 28.55   -12 01 55.7   22.2V 08SP266   645  C~1RHw      
2008 09  26.32680  00 30 09.15   -11 26 49.0   21.3R 08SP266   675  C~02Ms      
2008 09  26.36989  00 30 08.88   -11 26 51.0   21.1R 08SP266   675  C~02Ms      
2008 09  28.22583  00 29 59.46   -11 27 58.6   21.0R 08SP266   675  C~02Ms      
2008 09  28.26782  00 29 59.25   -11 28 00.7   21.3R 08SP266   675  C~02Ms      
2008 10  20.03118  00 28 10.59   -11 39 11.5         08SP266   807  C~02Ms      
2008 10  20.13028  00 28 10.07   -11 39 14.3         08SP266   807  C~02Ms      
2008 11  30.03065  00 25 47.51   -11 45 37.6         08SP266   807  C~02Ms      
2008 11  30.16313  00 25 47.27   -11 45 36.6         08SP266   807  C~02Ms      
2009 08  19.39914  00 40 10.62   -10 42 33.8         08SP266   675  C~0Abd      
2009 08  19.49425  00 40 10.28   -10 42 37.9         08SP266   675  C~0Abd      
2009 08  20.30156  00 40 07.62   -10 43 11.7         08SP266   675  C~0Abd      
2009 09  18.34538  00 38 04.71   -11 03 33.5   20.9R 08SP266   688  C~0Abd      
2009 09  18.43627  00 38 04.24   -11 03 37.3         08SP266   688  C~0Abd      
2009 10  18.24810  00 35 34.18   -11 20 38.2         08SP266   568  C~0Abd      
2009 10  18.27043  00 35 34.07   -11 20 38.6         08SP266   568  C~0Abd      
2010 09  10.14531  00 45 58.699  -10 39 02.98  21.2R 08SP266   809  C~0Muf      
2010 09  10.24991  00 45 58.222  -10 39 07.92  20.9R 08SP266   809  C~0Muf      
2010 09  10.33381  00 45 57.832  -10 39 11.08  20.8R 08SP266   809  C~0Muf      
2013 09  14.49008  01 07 16.338  -09 42 44.37  21.3w 08SP266   F51  C~1vVv      
2013 09  14.50474  01 07 16.271  -09 42 45.04  21.4w 08SP266   F51  C~1vVv      
2013 09  14.51937  01 07 16.200  -09 42 45.60  21.4w 08SP266   F51  C~1vVv      
2013 09  14.53400  01 07 16.140  -09 42 46.22  21.5w 08SP266   F51  C~1vVv      
2013 09  27.46331  01 06 14.806  -09 51 33.32  21.3r 08SP266   F51  C~1vVv      
2013 09  27.47424  01 06 14.772  -09 51 33.89  21.2r 08SP266   F51  C~1vVv      
2013 09  27.48655  01 06 14.680  -09 51 34.05  20.9i 08SP266   F51  C~1vVv      
2013 09  27.49855  01 06 14.629  -09 51 34.88  20.8i 08SP266   F51  C~1vVv      
2013 10  24.39137  01 03 57.830  -10 06 16.20  21.3r 08SP266   F51  C~1vVv      
2013 10  24.40339  01 03 57.792  -10 06 16.33  21.5r 08SP266   F51  C~1vVv      
2013 10  24.41701  01 03 57.714  -10 06 16.73  20.9i 08SP266   F51  C~1vVv      
2013 10  24.42965  01 03 57.645  -10 06 17.10  20.8i 08SP266   F51  C~1vVv      
2013 10  25.29748  01 03 53.373  -10 06 38.66  21.2w 08SP266   F51  C~1vVv      
2013 10  25.31205  01 03 53.295  -10 06 39.02  21.3w 08SP266   F51  C~1vVv      
2013 10  25.32662  01 03 53.224  -10 06 39.31  21.2w 08SP266   F51  C~1vVv      
2013 10  25.34121  01 03 53.149  -10 06 39.72  21.2w 08SP266   F51  C~1vVv      
2014 08  17.53000  01 16 04.312  -09 01 56.19  21.2i 08SP266   F51  C~1vVv      
2014 08  17.54189  01 16 04.303  -09 01 56.93  21.4i 08SP266   F51  C~1vVv      
2014 08  17.55382  01 16 04.261  -09 01 57.38  21.0i 08SP266   F51  C~1vVv      
2014 08  17.56575  01 16 04.230  -09 01 57.70  21.1i 08SP266   F51  C~1vVv      
2014 08  18.50392  01 16 02.021  -09 02 35.99  21.0i 08SP266   F51  C~1vVv      
2014 08  18.51582  01 16 01.992  -09 02 36.34  21.0i 08SP266   F51  C~1vVv      
2014 08  18.52773  01 16 01.955  -09 02 36.87  20.8i 08SP266   F51  C~1vVv      
2014 08  18.53964  01 16 01.922  -09 02 37.34  20.9i 08SP266   F51  C~1vVv      
2014 08  19.50138  01 15 59.563  -09 03 16.66  21.1i 08SP266   F51  C~1vVv      
2014 08  19.51327  01 15 59.530  -09 03 17.23  21.0i 08SP266   F51  C~1vVv      
2014 08  19.52517  01 15 59.500  -09 03 17.70  20.9i 08SP266   F51  C~1vVv      
2014 08  19.53710  01 15 59.471  -09 03 18.22  20.8i 08SP266   F51  C~1vVv      
2014 09  03.54607  01 15 12.627  -09 13 52.81  21.5w 08SP266   F51  C~1vVv      
2014 09  03.54673  01 15 12.597  -09 13 53.01  21.4w 08SP266   F51  C~1vVv      
2014 09  03.55800  01 15 12.564  -09 13 53.59  21.6w 08SP266   F51  C~1vVv      
2014 09  03.55866  01 15 12.559  -09 13 53.57  21.4w 08SP266   F51  C~1vVv      
2014 09  03.56993  01 15 12.517  -09 13 53.91  21.5w 08SP266   F51  C~1vVv      
2014 09  03.57059  01 15 12.517  -09 13 54.15  21.8w 08SP266   F51  C~1vVv      
2014 11  28.33294  01 08 42.499  -09 53 11.78  20.9i 08SP266   F51  C~1vVv      
2014 11  28.34322  01 08 42.450  -09 53 11.73  21.0i 08SP266   F51  C~1vVv      
2014 11  28.35355  01 08 42.434  -09 53 11.77  21.2i 08SP266   F51  C~1vVv      
2014 11  28.36387  01 08 42.406  -09 53 11.61  21.0i 08SP266   F51  C~1vVv      
2014 12  12.25506  01 08 08.070  -09 51 41.04  21.5w 08SP266   F51  C~1vVv      
2014 12  12.26529  01 08 08.056  -09 51 40.96  21.6w 08SP266   F51  C~1vVv      
2014 12  12.27554  01 08 08.045  -09 51 40.76  21.7w 08SP266   F51  C~1vVv      
2014 12  12.28577  01 08 08.011  -09 51 40.63  21.6w 08SP266   F51  C~1vVv      
2016 09  08.52886  01 29 08.324  -08 34 32.62  22.0w 08SP266   F51  C~1xg0      
2016 09  08.54018  01 29 08.224  -08 34 33.41  22.0w 08SP266   F51  C~1xg0      
2016 09  08.55148  01 29 08.262  -08 34 33.49  22.2w 08SP266   F51  C~1xg0      
2017 09  16.50111  01 35 44.383  -08 17 39.57  21.1w 08SP266   F51  C~2KuK      
2017 09  16.56077  01 35 44.130  -08 17 42.06  21.2w 08SP266   F51  C~2KuK      
2017 09  16.57535  01 35 44.081  -08 17 42.58  21.5w 08SP266   F51  C~2KuK      
2017 09  16.58988  01 35 43.994  -08 17 43.45  21.5w 08SP266   F51  C~2KuK      

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     0.03       0.00    -0.23
  2   0.0000     -0.13    -0.03       0.06    -0.16
  3   0.0000     -0.31     0.00       0.03    -0.18
  4   0.0326   -989.38    -0.06     -46.47    -0.12
  5   0.0326   -989.51    -0.13     -46.41    -0.06
  6   0.0326   -989.69    -0.10     -46.45    -0.09
  7   2.0261  11677.24 (   1.19)  -3453.54 (   0.35)
  8   2.0262  11672.78     0.38   -3453.69     0.28
  9   2.0313  11518.21 (   0.80)  -3457.25 (   0.63)
 10   2.0314  11514.52 (   0.65)  -3457.87 (   0.06)
 11   2.0910   9778.52 (   1.09)  -3401.52 (  -0.31)
 12   2.0913   9770.38     0.38   -3400.88    -0.39
 13   2.2032   7702.10     0.32   -2879.36     0.27
 14   2.2036   7699.30     0.50   -2876.99     0.28
 15   2.9216  20887.08    -0.19   -4787.07     0.17
 16   2.9218  20880.74    -0.50   -4788.65     0.18
 17   2.9240  20830.38    -0.44   -4802.61     0.17
 18   3.0035  18652.58     0.07   -5140.25     0.14
 19   3.0038  18644.64    -0.23   -5140.75     0.11
 20   3.0854  16193.91    -0.16   -5130.18     0.02
 21   3.0855  16192.26    -0.07   -5129.86     0.19
 22   3.9804  25681.81 (   1.30)  -6809.92 (  -0.14)
 23   3.9807  25673.21 (   1.12)  -6811.36 (  -0.63)
 24   3.9809  25666.55 (   1.24)  -6811.73 (  -0.26)
 25   6.9930  44714.05     0.08  -12175.05     0.33
 26   6.9930  44712.80     0.06  -12175.21     0.28
 27   6.9931  44711.56     0.03  -12175.23     0.36
 28   6.9931  44710.44     0.12  -12175.39     0.31
 29   7.0285  43614.71     0.02  -12240.29    -0.10
 30   7.0285  43613.98     0.25  -12240.59    -0.38
 31   7.0286  43612.63    -0.01  -12240.11     0.12
 32   7.0286  43611.54    -0.04  -12240.52    -0.28
 33   7.1022  41311.53    -0.42  -12119.12    -0.00
 34   7.1023  41310.95    -0.02  -12118.98     0.00
 35   7.1023  41309.69    -0.17  -12118.82     0.01
 36   7.1023  41308.56    -0.27  -12118.69    -0.00
 37   7.1047  41239.64    -0.13  -12109.52    -0.04
 38   7.1048  41238.40    -0.19  -12109.33    -0.00
 39   7.1048  41237.28    -0.13  -12109.11     0.05
 40   7.1048  41236.06    -0.18  -12108.98     0.01
 41   7.9158  53280.75     0.06  -13578.78     0.01
 42   7.9158  53280.27     0.22  -13579.40    -0.36
 43   7.9158  53279.46     0.05  -13579.52    -0.24
 44   7.9159  53278.87     0.10  -13579.59    -0.07
 45   7.9184  53229.40     0.17  -13599.41    -0.23
 46   7.9185  53228.83     0.25  -13599.53    -0.11
 47   7.9185  53228.05     0.13  -13599.76    -0.09
 48   7.9185  53227.36     0.09  -13599.96    -0.06
 49   7.9212  53175.28     0.13  -13619.68    -0.00
 50   7.9212  53174.54     0.06  -13619.98    -0.06
 51   7.9212  53173.90     0.09  -13620.20    -0.05
 52   7.9213  53173.24     0.10  -13620.48    -0.09
 53   7.9623  52209.54     0.38  -13877.21     0.02
 54   7.9623  52209.02    -0.09  -13877.19     0.06
 55   7.9624  52208.28     0.00  -13877.49    -0.10
 56   7.9624  52208.21    -0.01  -13877.44    -0.04
 57   7.9624  52207.46     0.07  -13877.46     0.09
 58   7.9624  52207.35     0.01  -13877.68    -0.12
 59   8.1972  45626.15    -0.09  -13340.51    -0.09
 60   8.1972  45625.49    -0.30  -13340.13     0.06
 61   8.1973  45625.24    -0.09  -13340.06    -0.10
 62   8.1973  45624.93     0.05  -13339.72     0.00
 63   8.2353  45187.87     0.06  -13021.10    -0.02
 64   8.2354  45187.71     0.12  -13020.93    -0.10
 65   8.2354  45187.65     0.27  -13020.67    -0.09
 66   8.2354  45187.24     0.08  -13020.32     0.02
 67   9.9774  65377.99     0.22  -17686.04     0.00
 68   9.9774  65376.14    -0.74  -17686.05     0.13
 69   9.9774  65376.66 (   0.66) -17686.40 (  -0.10)
 70  10.9985  71741.45    -0.10  -19687.47     0.12
 71  10.9987  71736.41    -0.02  -19687.90     0.11
 72  10.9987  71735.42     0.23  -19688.02     0.10
 73  10.9987  71733.68    -0.26  -19688.18     0.04

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.

08SP266    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.306    41.311    41.300
ecceobj         0.127     0.127     0.127
incobj         19.488    19.488    19.488
qmin           34.959    34.855    35.031
qmax           47.502    47.629    47.433
amean          41.065    41.072    41.060
amin           40.727    40.727    40.715
amax           41.433    41.451    41.421
emean           0.124     0.126     0.123
emin            0.104     0.105     0.103
emax            0.147     0.149     0.145
imean          18.553    18.579    18.541
imin           17.575    17.573    17.577
imax           19.419    19.471    19.368
excite_mean     0.342     0.343     0.341
fracstop        1.000     1.000     1.000
cjmean          2.930     2.930     2.931

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       182.2     184.0     181.4
kozaiamp        179.9     180.0     179.9