Orbit Fit and Astrometric record for 11SO277

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: 11SO277   
# Created Fri Dec 15 02:37:39 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   26
# Arc:   4.11y
# First observation: 2011/09/26
#  Last observation: 2015/11/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000115   0.038512   0.000012  -0.000840   0.034363   0.000000
# Chi-squared of fit:    24.35 DOF:   44 RMS:  0.17
# Min/Max residuals:    -0.71    0.42
# Exact a, adot, b, bdot, g, gdot:
  2.007881E-05  3.843469E-02 -1.695455E-06 -8.195662E-04  3.390754E-02  5.703718E-04
# Covariance matrix:
  3.4134E-13 -2.4662E-13 -1.8835E-15  3.2282E-15 -6.9517E-14 -1.1510E-12
 -2.4662E-13  3.3996E-13  3.5291E-15 -6.0343E-15  1.0705E-13  2.2519E-12
 -1.8835E-15  3.5291E-15  2.5949E-13 -9.0642E-14  2.4845E-15  2.4426E-14
  3.2282E-15 -6.0343E-15 -9.0642E-14  4.0999E-14 -4.4721E-15 -4.1371E-14
 -6.9517E-14  1.0705E-13  2.4845E-15 -4.4721E-15  4.3459E-13  1.0997E-13
 -1.1510E-12  2.2519E-12  2.4426E-14 -4.1371E-14  1.0997E-13  1.8177E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.865025   16.186667    0.230826   -0.166555   -0.957690  2455830.970756
# Heliocentric elements and errors
Epoch:              2455830.5000  =  2011/09/26
Mean Anomaly:          122.96724 +/-     0.689
Argument of Peri:      138.59394 +/-     0.684
Long of Asc Node:      113.54154 +/-     0.002
Inclination:             9.63770 +/-     0.000
Eccentricity:         0.00784582 +/-    0.0001
Semi-Major Axis:     30.32385565 +/-    0.0023
Time of Perihelion: 2434997.0119 +/-     116.6
Perihelion:          30.08594018 +/-    0.0033
Aphelion:            30.56177111 +/-    0.0034
Period (y)              166.9878 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.90539624 +/-    0.0005
Ecliptic Y            8.15056580 +/-    0.0002
Ecliptic Z           -5.05283286 +/-    0.0001
Ecliptic XDOT        -0.00083583 +/-    0.0000
Ecliptic YDOT         0.00299510 +/-    0.0000
Ecliptic ZDOT        -0.00007302 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.45463470 +/-    0.0005
Geocenter to KBO     29.49196349 +/-    0.0006
# Hcoef:  7.93

The following table shows the complete astrometric record for 11SO277. 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 (11SO277) followed by the observatory code and reference code for the source of the astrometry.

2011 09  26.46999  01 14 46.38   -02 44 52.6   23.3w 11SO277   F51  C~1tfL      
2011 09  26.48402  01 14 46.33   -02 44 53.2   22.8w 11SO277   F51  C~1tfL      
2011 10  16.39249  01 12 46.82   -02 57 43.6   22.0i 11SO277   F51  C~1tfL      
2011 10  16.40458  01 12 46.72   -02 57 44.1   22.2i 11SO277   F51  C~1tfL      
2013 09  10.380220 01 32 32.49   -00 58 15.6   23.3g 11SO277   W84  C~1tfL      
2013 09  10.381609 01 32 32.48   -00 58 15.6   22.5r 11SO277   W84  C~1tfL      
2013 09  10.382986 01 32 32.48   -00 58 15.7   22.2i 11SO277   W84  C~1tfL      
2013 09  14.49470  01 32 12.95   -01 00 59.9   22.5w 11SO277   F51  C~1tfL      
2013 09  14.50934  01 32 12.88   -01 01 00.4   22.6w 11SO277   F51  C~1tfL      
2013 09  14.52397  01 32 12.80   -01 01 00.9   22.3w 11SO277   F51  C~1tfL      
2013 09  14.53861  01 32 12.73   -01 01 01.5   22.2w 11SO277   F51  C~1tfL      
2013 10  02.39797  01 30 35.47   -01 13 00.4   22.0w 11SO277   F51  C~1tfL      
2013 10  02.41280  01 30 35.41   -01 13 01.4   22.7w 11SO277   F51  C~1tfL      
2013 10  10.41751  01 29 47.41   -01 18 12.1   22.5w 11SO277   F51  C~1tfL      
2013 10  10.43152  01 29 47.32   -01 18 12.6   22.5w 11SO277   F51  C~1tfL      
2013 10  25.30540  01 28 16.41   -01 26 54.7   22.8w 11SO277   F51  C~1tfL      
2013 10  25.31994  01 28 16.32   -01 26 55.2   22.6w 11SO277   F51  C~1tfL      
2014 10  29.254167 01 36 05.61   -00 40 46.1   22.3r 11SO277   W84  C~1tfL      
2014 11  17.136933 01 34 18.33   -00 48 36.4   23.3g 11SO277   W84  C~1tfL      
2014 11  21.033831 01 33 58.65   -00 49 43.7   22.4i 11SO277   W84  C~1tfL      
2014 11  27.096539 01 33 30.32   -00 51 05.7   22.1z 11SO277   W84  C~1tfL      
2014 11  28.119711 01 33 25.85   -00 51 16.7   22.0z 11SO277   W84  C~1tfL      
2014 12  16.108044 01 32 23.79   -00 52 10.8   22.1z 11SO277   W84  C~1tfL      
2015 11  01.201470 01 44 00.10   +00 05 54.1   22.1i 11SO277   W84  C~1tfL      
2015 11  07.214791 01 43 24.23   +00 03 05.8         11SO277   696  C~1tfL      
2015 11  07.255822 01 43 23.93   +00 03 04.4         11SO277   696  C~1tfL      

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    -0.44       0.00     0.27
  2   0.0000     -0.92    -0.00      -0.27     0.06
  3   0.0545  -1949.92     0.42     -27.77    -0.13
  4   0.0546  -1951.50     0.04     -27.66    -0.05
  5   1.9573  17253.83    -0.04    -227.48    -0.04
  6   1.9573  17253.69    -0.06    -227.42     0.03
  7   1.9573  17253.65     0.01    -227.52    -0.05
  8   1.9686  16917.83     0.04    -266.49    -0.13
  9   1.9686  16916.66     0.13    -266.55    -0.07
 10   1.9687  16915.35     0.07    -266.55     0.05
 11   1.9687  16914.14     0.11    -266.70     0.02
 12   2.0176  15281.32 (  -0.07)   -369.34 (   0.51)
 13   2.0176  15280.10     0.18    -369.92    -0.03
 14   2.0396  14492.06    -0.15    -379.83    -0.06
 15   2.0396  14490.61    -0.18    -379.78    -0.01
 16   2.0803  13024.91    -0.14    -337.36    -0.13
 17   2.0804  13023.47    -0.16    -337.31    -0.16
 18   3.0904  20636.38     0.06    -490.54     0.15
 19   3.1421  18954.90     0.09    -304.17     0.08
 20   3.1528  18654.08     0.06    -252.45     0.14
 21   3.1694  18226.95     0.03    -164.24     0.10
 22   3.1722  18160.32     0.14    -148.53     0.05
 23   3.2215  17273.87    -0.07     160.79     0.06
 24   4.0978  28391.93     0.38    -649.81    -0.00
 25   4.1143  27820.13     0.19    -597.28    -0.08
 26   4.1144  27815.36    -0.71    -596.84    -0.06

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.

11SO277    quality flag:3

Type:            1:1       1:1       1:1

axisobj        30.342    30.349    30.335
ecceobj         0.009     0.009     0.008
incobj          9.639     9.639     9.639
qmin           28.818    28.861    28.839
qmax           31.561    31.579    31.574
amean          30.110    30.110    30.110
amin           29.782    29.781    29.784
amax           30.448    30.473    30.473
emean           0.016     0.016     0.016
emin            0.000     0.000     0.000
emax            0.037     0.038     0.038
imean           7.666     7.621     7.708
imin            7.225     7.132     7.315
imax            8.110     8.111     8.110
excite_mean     0.135     0.134     0.135
fracstop        1.000     1.000     1.000
cjmean          2.983     2.982     2.983

libcent 0        64.2      64.5      63.8
libamp  0        24.9      25.8      24.0
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       178.0     179.9     178.0
kozaiamp        180.0     180.0     180.0