Orbit Fit and Astrometric record for 13UU17

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: 13UU17    
# Created Fri Dec 15 02:37:55 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   1.46y
# First observation: 2013/08/02
#  Last observation: 2015/01/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000106   0.048974   0.000035   0.007093   0.040658   0.000000
# Chi-squared of fit:    10.85 DOF:   40 RMS:  0.12
# Min/Max residuals:    -0.35    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.899552E-05  4.826935E-02  2.846622E-06  7.211662E-03  4.021664E-02  1.448582E-02
# Covariance matrix:
  2.9118E-13  4.7544E-13 -4.4768E-14  3.6466E-13  6.2563E-13  3.6112E-11
  4.7544E-13  2.9391E-12 -2.6020E-13  2.0496E-12  2.7891E-12  2.0252E-10
 -4.4768E-14 -2.6020E-13  1.3360E-13 -3.4088E-13 -2.7627E-13 -2.2390E-11
  3.6466E-13  2.0496E-12 -3.4088E-13  2.0773E-12  2.1761E-12  1.7430E-10
  6.2563E-13  2.7891E-12 -2.7627E-13  2.1761E-12  2.9608E-12  2.1503E-10
  3.6112E-11  2.0252E-10 -2.2390E-11  1.7430E-10  2.1503E-10  1.7210E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.763793   18.435304    0.944818   -0.011532   -0.375502  2456507.040418
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           70.02290 +/-     0.300
Argument of Peri:      249.45567 +/-     0.122
Long of Asc Node:       27.98054 +/-     0.001
Inclination:             8.51232 +/-     0.001
Eccentricity:         0.24848295 +/-    0.0025
Semi-Major Axis:     25.90553256 +/-    0.0371
Time of Perihelion: 2447132.9762 +/-      34.8
Perihelion:          19.46844943 +/-    0.0707
Aphelion:            32.34261570 +/-    0.0798
Period (y)              131.8551 +/-      0.28
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.23308048 +/-    0.0010
Ecliptic Y            7.08495649 +/-    0.0003
Ecliptic Z           -0.76522172 +/-    0.0000
Ecliptic XDOT        -0.00009595 +/-    0.0000
Ecliptic YDOT         0.00343309 +/-    0.0000
Ecliptic ZDOT         0.00046051 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   25.25914413 +/-    0.0010
Geocenter to KBO     24.86532977 +/-    0.0011
# Hcoef: 10.29

The following table shows the complete astrometric record for 13UU17. 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 (13UU17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.53964  01 10 43.065  +05 35 41.08  24.6r 13UU17    568  C~2NKa      
2013 08  02.58233  01 10 42.980  +05 35 40.63  24.4r 13UU17    568  C~2NKa      
2013 08  30.46636  01 09 07.116  +05 26 11.64  24.1r 13UU17    568  C~2NKa      
2013 08  30.47107  01 09 07.072  +05 26 11.70  24.5r 13UU17    568  C~2NKa      
2013 08  30.47584  01 09 07.066  +05 26 10.93  24.1r 13UU17    568  C~2NKa      
2013 08  31.45951  01 09 01.981  +05 25 41.62  24.0r 13UU17    568  C~2NKa      
2013 08  31.52510  01 09 01.642  +05 25 39.50  24.6r 13UU17    568  C~2NKa      
2013 09  04.43928  01 08 40.475  +05 23 35.79  24.1r 13UU17    568  C~2NKa      
2013 09  04.51419  01 08 40.061  +05 23 33.46  24.1r 13UU17    568  C~2NKa      
2013 10  06.42079  01 05 05.822  +05 03 08.15  24.0r 13UU17    568  C~2NKa      
2013 10  31.25056  01 02 06.442  +04 46 48.06  24.8r 13UU17    568  C~2NKa      
2013 10  31.29356  01 02 06.150  +04 46 46.69  24.0r 13UU17    568  C~2NKa      
2013 10  31.33628  01 02 05.860  +04 46 45.30  24.0r 13UU17    568  C~2NKa      
2013 11  01.27683  01 01 59.535  +04 46 11.81  24.0r 13UU17    568  C~2NKa      
2013 11  01.40318  01 01 58.673  +04 46 07.34  24.5r 13UU17    568  C~2NKa      
2013 11  05.45493  01 01 32.057  +04 43 48.40  24.1r 13UU17    568  C~2NKa      
2013 11  29.31710  00 59 25.531  +04 33 36.56  23.9r 13UU17    568  C~2NKa      
2013 12  04.26738  00 59 07.395  +04 32 23.18  23.9r 13UU17    568  C~2NKb      
2013 12  04.31956  00 59 07.228  +04 32 22.47  24.1r 13UU17    568  C~2NKb      
2014 11  19.19777  01 09 58.819  +06 04 02.19  24.2r 13UU17    568  C~2NKb      
2014 11  19.26507  01 09 58.459  +06 04 00.29  24.5r 13UU17    568  C~2NKb      
2014 11  25.21441  01 09 27.988  +06 01 33.42  23.9r 13UU17    568  C~2NKb      
2015 01  18.22533  01 08 27.519  +06 01 49.78  24.7r 13UU17    568  C~2NKb      

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    -0.00       0.00    -0.00
  2   0.0001     -1.34    -0.17       0.06     0.03
  3   0.0765  -1541.53     0.18      16.79     0.04
  4   0.0765  -1542.12    -0.01      17.09     0.34
  5   0.0765  -1542.49     0.01      16.42    -0.35
  6   0.0792  -1623.87    -0.09      18.14     0.11
  7   0.0794  -1629.36     0.03      18.10    -0.07
  8   0.0901  -1968.78    -0.06      23.75    -0.02
  9   0.0903  -1975.38     0.20      23.94    -0.01
 10   0.1776  -5402.30    -0.05     108.98     0.06
 11   0.2456  -8257.39    -0.22     226.77    -0.14
 12   0.2457  -8261.95    -0.10     227.17    -0.01
 13   0.2458  -8266.49     0.02     227.54     0.09
 14   0.2484  -8366.82     0.09     232.75    -0.01
 15   0.2488  -8380.46     0.12     233.55    -0.04
 16   0.2599  -8801.95     0.07     257.36    -0.04
 17   0.3252 -10788.22     0.04     416.62     0.13
 18   0.3387 -11067.60    -0.12     452.85    -0.02
 19   0.3389 -11070.19     0.06     453.15    -0.14
 20   1.2968     34.35    -0.17    1824.47     0.03
 21   1.2970     28.66    -0.01    1824.75    -0.15
 22   1.3133   -447.61     0.18    1861.41     0.21
 23   1.4612  -1275.86    -0.00    2219.26    -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.

13UU17    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        26.012    26.154    25.873
ecceobj         0.252     0.257     0.247
incobj          8.498     8.500     8.497
qmin           18.837    19.174    19.377
qmax           33.174    33.097    32.827
amean          25.931    25.850    25.821
amin           25.542    25.423    25.408
amax           26.187    26.248    26.385
emean           0.253     0.236     0.232
emin            0.231     0.207     0.198
emax            0.267     0.262     0.251
imean           9.087     9.468     9.112
imin            8.356     8.357     8.239
imax            9.894    10.472    11.019
excite_mean     0.298     0.288     0.281
fracstop        0.004     0.005     0.004
cjmean          2.931     2.938     2.941

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       276.2     289.7     279.9
kozaiamp         28.6      36.7      36.2