Orbit Fit and Astrometric record for 13UH17

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: 13UH17    
# Created Mon Dec 18 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   39
# Arc:   4.08y
# First observation: 2013/08/02
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000434   0.036600   0.000051  -0.005799   0.029990   0.000000
# Chi-squared of fit:    11.68 DOF:   72 RMS:  0.10
# Min/Max residuals:    -0.21    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.868537E-05  3.568407E-02 -2.889655E-06 -5.659839E-03  2.969440E-02 -2.838334E-03
# Covariance matrix:
  1.6195E-13 -7.7883E-14 -2.3812E-15  6.6095E-15  6.8573E-14 -2.7735E-13
 -7.7883E-14  1.9238E-13  1.4575E-14 -2.9274E-14  5.8381E-14  1.2300E-12
 -2.3812E-15  1.4575E-14  7.1930E-14 -3.3408E-14  7.1437E-15  1.1079E-13
  6.6095E-15 -2.9274E-14 -3.3408E-14  3.3244E-14 -1.2346E-14 -2.2075E-13
  6.8573E-14  5.8381E-14  7.1437E-15 -1.2346E-14  1.1421E-13  5.1917E-13
 -2.7735E-13  1.2300E-12  1.1079E-13 -2.2075E-13  5.1917E-13  9.2761E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.142064   16.205512    0.929654   -0.015363   -0.411505  2456507.017088
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          346.26360 +/-     0.010
Argument of Peri:      219.78631 +/-     0.019
Long of Asc Node:      181.65573 +/-     0.000
Inclination:             9.33092 +/-     0.000
Eccentricity:         0.30551354 +/-    0.0001
Semi-Major Axis:     47.88401677 +/-    0.0034
Time of Perihelion: 2461118.5085 +/-       3.2
Perihelion:          33.25480107 +/-    0.0035
Aphelion:            62.51323247 +/-    0.0051
Period (y)              331.3554 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.97036627 +/-    0.0004
Ecliptic Y            8.61727504 +/-    0.0001
Ecliptic Z           -1.25878803 +/-    0.0000
Ecliptic XDOT        -0.00119429 +/-    0.0000
Ecliptic YDOT         0.00308013 +/-    0.0000
Ecliptic ZDOT        -0.00051156 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.10112942 +/-    0.0004
Geocenter to KBO     33.67638364 +/-    0.0004
# Hcoef:  9.07

The following table shows the complete astrometric record for 13UH17. 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 (13UH17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.51631  01 03 01.447  +04 23 44.15  24.7r 13UH17    568  C~2NKY      
2013 08  02.55904  01 03 01.385  +04 23 43.58  24.2r 13UH17    568  C~2NKY      
2013 08  30.43177  01 01 50.413  +04 13 12.89  25.3r 13UH17    568  C~2NKY      
2013 08  31.43593  01 01 46.639  +04 12 43.35  24.1r 13UH17    568  C~2NKY      
2013 08  31.47896  01 01 46.465  +04 12 41.92  24.0r 13UH17    568  C~2NKY      
2013 10  06.39713  00 58 56.465  +03 52 04.93  24.2r 13UH17    568  C~2NKY      
2013 10  06.47088  00 58 56.062  +03 52 02.03  23.6r 13UH17    568  C~2NKY      
2013 10  31.23488  00 56 49.239  +03 37 43.91  24.3r 13UH17    568  C~2NKY      
2013 10  31.27795  00 56 49.012  +03 37 42.55  24.4r 13UH17    568  C~2NKY      
2013 10  31.32073  00 56 48.802  +03 37 41.28  24.3r 13UH17    568  C~2NKY      
2013 11  01.26121  00 56 44.369  +03 37 11.84  24.2r 13UH17    568  C~2NKY      
2013 11  01.38296  00 56 43.780  +03 37 07.93  24.2r 13UH17    568  C~2NKY      
2013 11  05.38795  00 56 25.300  +03 35 06.91  24.2r 13UH17    568  C~2NKY      
2013 11  29.22393  00 54 57.757  +03 25 45.16  23.8r 13UH17    568  C~2NKY      
2013 12  04.25107  00 54 45.380  +03 24 28.93  24.5r 13UH17    568  C~2NKY      
2013 12  04.30308  00 54 45.272  +03 24 28.18  24.1r 13UH17    568  C~2NKY      
2014 06  27.59391  01 10 35.227  +04 54 12.09  24.4r 13UH17    568  C~2NKY      
2014 06  28.59898  01 10 37.989  +04 54 21.09  24.4r 13UH17    568  C~2NKY      
2014 07  24.55698  01 11 12.598  +04 54 24.04  24.3r 13UH17    568  C~2NKY      
2014 07  27.58768  01 11 11.954  +04 53 55.92  24.5r 13UH17    568  C~2NKY      
2014 08  22.55261  01 10 28.332  +04 46 08.97  24.1r 13UH17    568  C~2NKY      
2014 08  22.56426  01 10 28.307  +04 46 08.60  24.0r 13UH17    568  C~2NKY      
2014 08  28.41447  01 10 09.805  +04 43 33.97  24.2r 13UH17    568  C~2NKY      
2014 08  28.42620  01 10 09.761  +04 43 33.66  24.3r 13UH17    568  C~2NKY      
2014 10  25.28038  01 05 32.440  +04 10 36.56  23.8r 13UH17    568  C~2NKY      
2014 10  25.33867  01 05 32.119  +04 10 34.81  24.5r 13UH17    568  C~2NKY      
2014 10  27.31342  01 05 22.111  +04 09 28.74  24.1r 13UH17    568  C~2NKY      
2014 10  27.33186  01 05 21.995  +04 09 28.21  25.3u 13UH17    568  C~2NKY      
2014 10  27.36433  01 05 21.846  +04 09 27.14  24.4r 13UH17    568  C~2NKY      
2014 10  27.40661  01 05 21.622  +04 09 25.77  24.5r 13UH17    568  C~2NKY      
2014 11  24.23611  01 03 21.281  +03 56 39.18  24.1r 13UH17    568  C~2NKY      
2014 11  25.23226  01 03 17.978  +03 56 18.94  24.5r 13UH17    568  C~2NKY      
2014 12  17.26271  01 02 28.561  +03 51 32.85  24.4r 13UH17    568  C~2NKY      
2015 01  17.24366  01 02 47.754  +03 54 22.96  24.4r 13UH17    568  C~2NKY      
2015 12  07.38604  01 10 54.800  +04 22 06.24  24.7w 13UH17    568  C~2NKY      
2017 07  24.60568  01 35 43.447  +06 19 15.52  24.6w 13UH17    568  C~2NKY      
2017 08  25.50368  01 35 10.298  +06 10 58.68  24.1w 13UH17    568  C~2NKY      
2017 08  30.44591  01 34 56.079  +06 08 52.98  24.6w 13UH17    568  C~2NKY      
2017 08  30.49268  01 34 55.934  +06 08 51.76  24.5w 13UH17    568  C~2NKY      

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     0.07       0.00    -0.03
  2   0.0001     -1.07     0.02      -0.17     0.07
  3   0.0764  -1223.32    -0.09    -175.82     0.05
  4   0.0792  -1286.79     0.01    -181.45     0.16
  5   0.0793  -1289.75    -0.14    -181.78     0.05
  6   0.1776  -4113.91     0.13    -347.55    -0.05
  7   0.1778  -4120.59    -0.04    -347.91    -0.20
  8   0.2456  -6204.22     0.11    -410.09    -0.05
  9   0.2458  -6207.88    -0.14    -410.03     0.05
 10   0.2459  -6211.27    -0.14    -410.00     0.13
 11   0.2484  -6283.92     0.15    -411.63     0.02
 12   0.2488  -6293.57     0.06    -411.85    -0.08
 13   0.2597  -6595.79     0.09    -417.07     0.34
 14   0.3250  -8023.52     0.09    -430.76    -0.03
 15   0.3388  -8224.21    -0.15    -429.69    -0.05
 16   0.3389  -8226.00    -0.00    -429.76    -0.16
 17   0.9010   6970.85     0.01    -901.77    -0.10
 18   0.9037   7012.50     0.06    -909.16    -0.10
 19   0.9748   7492.56     0.00   -1103.42    -0.04
 20   0.9831   7472.94    -0.12   -1125.78     0.16
 21   1.0542   6691.38    -0.04   -1309.50     0.04
 22   1.0542   6690.89     0.07   -1309.70    -0.09
 23   1.0702   6375.95     0.03   -1347.36    -0.07
 24   1.0703   6375.22    -0.01   -1347.40    -0.03
 25   1.2286   1785.26     0.05   -1592.09    -0.21
 26   1.2288   1780.15    -0.12   -1591.87     0.09
 27   1.2342   1616.53     0.14   -1595.66    -0.10
 28   1.2343   1614.72    -0.12   -1595.49     0.09
 29   1.2344   1612.25     0.14   -1595.63    -0.00
 30   1.2345   1608.63     0.06   -1595.61     0.06
 31   1.3107   -348.36    -0.18   -1614.72     0.09
 32   1.3134   -401.77    -0.00   -1614.49     0.03
 33   1.3737  -1194.53     0.10   -1595.41    -0.03
 34   1.4585   -864.01    -0.10   -1548.35    -0.09
 35   2.3460   6508.15     0.00   -2795.14     0.00
 36   3.9756  29962.57    -0.02   -4668.90    -0.03
 37   4.0629  29306.28     0.02   -4948.88     0.05
 38   4.0765  29057.84    -0.03   -4986.88     0.03
 39   4.0766  29055.33     0.03   -4987.21     0.03

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.

13UH17    quality flag:3

Type:           2:1E      2:1E      2:1E
Type:                             2:1EII

axisobj        48.181    48.190    48.171
ecceobj         0.309     0.309     0.309
incobj          9.308     9.308     9.308
qmin           32.873    32.875    32.870
qmax           63.464    63.423    63.513
amean          47.796    47.796    47.796
amin           47.213    47.196    47.168
amax           48.481    48.491    48.516
emean           0.206     0.201     0.247
emin            0.108     0.061     0.184
emax            0.311     0.310     0.311
imean          15.008    15.201    13.436
imin            8.994     8.994     8.993
imax           18.124    19.112    16.174
excite_mean     0.339     0.340     0.342
fracstop        1.000     1.000     1.000
cjmean          3.003     3.002     3.001

libcent 0       174.2     183.5      98.7
libamp  0       140.1     162.6      65.0
libcent 1      -180.0    -180.0     211.4
libamp  1      -180.0    -180.0     138.1
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       211.6     225.3     235.8
kozaiamp         39.5      88.6      44.2