Orbit Fit and Astrometric record for 11UZ412

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: 11UZ412   
# Created Tue Oct 24 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   24
# Arc:   1.44y
# First observation: 2011/08/29
#  Last observation: 2013/02/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000170   0.038309   0.000018   0.004155   0.032149   0.000000
# Chi-squared of fit:     9.68 DOF:   42 RMS:  0.11
# Min/Max residuals:    -0.19    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.800114E-05  3.808960E-02  1.828790E-06  4.170791E-03  3.219950E-02  6.045361E-04
# Covariance matrix:
  3.4930E-13  2.8714E-13 -1.4469E-14  9.3376E-14  4.5116E-13  1.6496E-11
  2.8714E-13  1.3991E-12 -3.8911E-14  2.6289E-13  1.1058E-12  4.6782E-11
 -1.4469E-14 -3.8911E-14  1.6576E-13 -1.5890E-13 -3.6537E-14 -1.5387E-12
  9.3376E-14  2.6289E-13 -1.5890E-13  2.7702E-13  2.3885E-13  1.0554E-11
  4.5116E-13  1.1058E-12 -3.6537E-14  2.3885E-13  1.1113E-12  4.2284E-11
  1.6496E-11  4.6782E-11 -1.5387E-12  1.0554E-11  4.2284E-11  1.8824E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.595466   33.226798    0.850814    0.024359   -0.538015  2455803.028806
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          356.10600 +/-     0.396
Argument of Peri:       27.25330 +/-     0.529
Long of Asc Node:        9.75262 +/-     0.002
Inclination:             6.80104 +/-     0.001
Eccentricity:         0.13891459 +/-    0.0001
Semi-Major Axis:     36.69042577 +/-    0.0024
Time of Perihelion: 2456678.5540 +/-      89.3
Perihelion:          31.59359047 +/-    0.0041
Aphelion:            41.78726106 +/-    0.0045
Period (y)              222.2477 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.87238155 +/-    0.0009
Ecliptic Y           16.58459430 +/-    0.0005
Ecliptic Z            1.40643395 +/-    0.0000
Ecliptic XDOT        -0.00174827 +/-    0.0000
Ecliptic YDOT         0.00273392 +/-    0.0000
Ecliptic ZDOT         0.00035666 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.60936119 +/-    0.0008
Geocenter to KBO     31.05638195 +/-    0.0010
# Hcoef:  9.36

The following table shows the complete astrometric record for 11UZ412. 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 (11UZ412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.52804  02 00 21.542  +15 01 40.02        11UZ412   568  C~1CKy      
2011 08  29.57207  02 00 21.413  +15 01 39.70  24.4r 11UZ412   568  C~1CKy      
2011 08  29.61903  02 00 21.260  +15 01 39.23  24.4r 11UZ412   568  C~1CKy      
2011 09  05.55829  01 59 59.404  +15 00 30.66  24.2r 11UZ412   568  C~1CKy      
2011 10  24.43755  01 55 43.262  +14 41 36.97  24.1r 11UZ412   568  C~1CKy      
2011 10  24.48029  01 55 42.985  +14 41 35.73  24.0r 11UZ412   568  C~1CKy      
2011 10  24.52304  01 55 42.715  +14 41 34.39  23.9r 11UZ412   568  C~1CKy      
2011 10  31.54242  01 54 59.493  +14 37 56.65  23.9r 11UZ412   568  C~1CKy      
2011 11  24.28350  01 52 44.290  +14 26 00.09  24.3r 11UZ412   568  C~1CKy      
2011 11  30.32972  01 52 15.062  +14 23 17.06  24.1r 11UZ412   568  C~1CKy      
2012 01  26.26197  01 50 49.511  +14 13 09.77  24.0r 11UZ412   568  C~1CKy      
2012 08  17.55584  02 08 54.995  +16 00 09.97  24.3r 11UZ412   568  C~1CKy      
2012 08  22.61130  02 08 47.002  +16 00 08.33        11UZ412   568  C~1CKy      
2012 08  23.54195  02 08 45.226  +16 00 06.45        11UZ412   568  C~1CKy      
2012 08  24.48353  02 08 43.308  +16 00 03.87  24.2r 11UZ412   568  C~1CKy      
2012 10  21.32322  02 04 15.067  +15 42 22.98  24.4r 11UZ412   568  C~1CKy      
2012 10  21.33175  02 04 15.034  +15 42 22.79  24.1r 11UZ412   568  C~1CKy      
2012 10  21.34894  02 04 14.909  +15 42 22.34  24.1r 11UZ412   568  C~1CKy      
2012 10  21.35746  02 04 14.860  +15 42 21.93  24.2r 11UZ412   568  C~1CKy      
2012 10  21.37460  02 04 14.747  +15 42 21.43  24.0r 11UZ412   568  C~1CKy      
2012 10  21.38354  02 04 14.700  +15 42 21.30  24.3r 11UZ412   568  C~1CKy      
2013 02  02.25091  01 59 04.708  +15 12 29.91  24.4r 11UZ412   568  C~1CKy      
2013 02  03.25659  01 59 07.497  +15 12 41.36  24.2r 11UZ412   568  C~1CKz      
2013 02  06.29902  01 59 16.660  +15 13 19.73  24.9r 11UZ412   568  C~1CKz      

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     0.15       0.00     0.05
  2   0.0001     -1.86     0.13       0.34     0.07
  3   0.0002     -4.11    -0.13       0.67     0.05
  4   0.0192   -324.98    -0.08      45.45    -0.17
  5   0.1531  -4201.93    -0.03     271.61    -0.03
  6   0.1532  -4206.13    -0.11     271.85     0.09
  7   0.1533  -4210.27    -0.14     271.96     0.08
  8   0.1725  -4874.36    -0.07     287.38    -0.17
  9   0.2375  -6965.85     0.12     306.20    -0.19
 10   0.2541  -7421.24     0.15     303.42     0.03
 11   0.4099  -8801.27     0.03     175.08     0.20
 12   0.9693   8176.50     0.05     779.10     0.02
 13   0.9831   8067.20    -0.01     816.21    -0.19
 14   0.9857   8042.41     0.17     823.03    -0.10
 15   0.9882   8015.45     0.07     829.88    -0.03
 16   1.1466   4010.50    -0.19    1138.83     0.12
 17   1.1466   4009.99     0.11    1138.81     0.07
 18   1.1467   4008.14    -0.10    1139.00     0.20
 19   1.1467   4007.33    -0.09    1138.86     0.02
 20   1.1467   4005.63    -0.16    1138.94     0.05
 21   1.1468   4004.95     0.01    1139.05     0.13
 22   1.4311   -819.89    -0.08     994.04    -0.14
 23   1.4339   -778.05     0.08     990.82    -0.07
 24   1.4422   -640.33     0.12     980.96    -0.09

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.

11UZ412    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.756    36.768    36.746
ecceobj         0.140     0.140     0.140
incobj          6.796     6.796     6.796
qmin           31.034    31.059    31.016
qmax           42.170    42.206    42.199
amean          36.478    36.478    36.478
amin           36.210    36.194    36.205
amax           36.781    36.793    36.784
emean           0.126     0.126     0.126
emin            0.107     0.106     0.107
emax            0.148     0.148     0.148
imean           5.031     5.044     5.014
imin            2.005     1.906     2.004
imax            7.746     7.762     7.733
excite_mean     0.156     0.156     0.156
fracstop        1.000     1.000     1.000
cjmean          2.998     2.998     2.998

libcent 0       180.8     181.1     180.6
libamp  0        15.7      22.3      17.9
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       183.7     183.0     185.1
kozaiamp        180.0     180.0     180.0