Orbit Fit and Astrometric record for 13UQ15

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: 13UQ15    
# Created Fri Dec 15 02:37:54 2017
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   28
# Arc:   1.46y
# First observation: 2013/08/02
#  Last observation: 2015/01/17
Preliminary a, adot, b, bdot, g, gdot:
  -0.000082   0.016436  -0.000017  -0.008346   0.021374   0.000000
# Chi-squared of fit:     3.09 DOF:   50 RMS:  0.06
# Min/Max residuals:    -0.15    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.196314E-05  1.623301E-02 -6.349536E-06 -8.325053E-03  2.123221E-02  7.059583E-04
# Covariance matrix:
  3.8451E-13 -2.3076E-14  4.1408E-14 -2.3305E-13  4.2832E-13  2.0256E-11
 -2.3076E-14  2.5825E-13  1.9242E-14 -1.1549E-13  1.6033E-13  1.0077E-11
  4.1408E-14  1.9242E-14  1.2468E-13 -1.6851E-13  7.0258E-14  4.4360E-12
 -2.3305E-13 -1.1549E-13 -1.6851E-13  5.2366E-13 -4.0186E-13 -2.6997E-11
  4.2832E-13  1.6033E-13  7.0258E-14 -4.0186E-13  6.9212E-13  3.4963E-11
  2.0256E-11  1.0077E-11  4.4360E-12 -2.6997E-11  3.4963E-11  2.3575E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.982746   15.983388    0.928079   -0.021584   -0.414771  2456507.013208
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          169.38643 +/-     1.205
Argument of Peri:       14.98418 +/-     1.211
Long of Asc Node:      189.13308 +/-     0.000
Inclination:            27.33728 +/-     0.001
Eccentricity:         0.11095809 +/-    0.0003
Semi-Major Axis:     42.83542252 +/-    0.0046
Time of Perihelion: 2408319.1336 +/-     342.6
Perihelion:          38.08248570 +/-    0.0144
Aphelion:            47.58835933 +/-    0.0148
Period (y)              280.3579 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           45.87077157 +/-    0.0018
Ecliptic Y           12.17655029 +/-    0.0005
Ecliptic Z           -2.45102270 +/-    0.0001
Ecliptic XDOT        -0.00054892 +/-    0.0000
Ecliptic YDOT         0.00202112 +/-    0.0000
Ecliptic ZDOT        -0.00107664 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.52266378 +/-    0.0017
Geocenter to KBO     47.09824773 +/-    0.0018
# Hcoef:  6.31

The following table shows the complete astrometric record for 13UQ15. 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 (13UQ15) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.51243  01 03 29.619  +03 32 02.56  23.3r 13UQ15    568  C~2NKU      
2013 08  02.55517  01 03 29.563  +03 32 01.87  22.9r 13UQ15    568  C~2NKU      
2013 08  30.42790  01 02 31.927  +03 22 09.11  22.8r 13UQ15    568  C~2NKU      
2013 08  31.43205  01 02 28.990  +03 21 43.03  23.1r 13UQ15    568  C~2NKU      
2013 08  31.47509  01 02 28.845  +03 21 41.95  23.0r 13UQ15    568  C~2NKU      
2013 10  06.38784  01 00 18.788  +03 04 16.05  22.1r 13UQ15    568  C~2Gdp      
2013 10  06.39317  01 00 18.771  +03 04 15.93  22.9r 13UQ15    568  C~2NKU      
2013 10  06.45289  01 00 18.527  +03 04 14.22  22.5r 13UQ15    568  C~2NKU      
2013 10  06.46664  01 00 18.465  +03 04 13.74  22.6r 13UQ15    568  C~2NKU      
2013 10  06.47596  01 00 18.426  +03 04 13.44  22.7r 13UQ15    568  C~2Gdq      
2013 10  09.51669  01 00 06.222  +03 02 41.65  22.8r 13UQ15    568  C~2NKU      
2013 10  31.23488  00 58 41.648  +02 52 23.00  23.3r 13UQ15    568  C~2Gdq      
2013 10  31.27795  00 58 41.492  +02 52 21.88  22.7r 13UQ15    568  C~2Gdq      
2013 10  31.32073  00 58 41.333  +02 52 20.80  22.9r 13UQ15    568  C~2Gdq      
2013 11  01.26121  00 58 37.908  +02 51 56.23  22.8r 13UQ15    568  C~2NKU      
2013 11  01.38296  00 58 37.458  +02 51 53.10  22.9r 13UQ15    568  C~2NKU      
2013 11  05.38795  00 58 23.196  +02 50 11.58  23.2r 13UQ15    568  C~2NKU      
2014 08  22.56038  01 07 05.471  +03 20 22.77  23.3r 13UQ15    568  C~2NKU      
2014 08  23.51871  01 07 03.163  +03 20 00.11  24.6u 13UQ15    568  C~2NKU      
2014 08  23.52297  01 07 03.153  +03 19 59.92  24.2u 13UQ15    568  C~2NKU      
2014 08  23.52723  01 07 03.139  +03 19 59.87  24.4u 13UQ15    568  C~2NKU      
2014 08  23.53149  01 07 03.122  +03 19 59.85  24.2u 13UQ15    568  C~2NKU      
2014 08  23.53576  01 07 03.132  +03 19 59.78  24.5u 13UQ15    568  C~2NKU      
2014 08  28.42232  01 06 50.472  +03 17 59.83  23.0r 13UQ15    568  C~2NKU      
2014 10  23.29166  01 03 25.767  +02 51 01.60  23.0r 13UQ15    568  C~2NKU      
2014 10  27.25832  01 03 10.439  +02 49 11.76  23.1r 13UQ15    568  C~2NKU      
2014 11  25.22838  01 01 35.442  +02 38 14.04  22.8r 13UQ15    568  C~2NKU      
2015 01  17.29288  01 01 02.121  +02 34 34.86  23.4r 13UQ15    568  C~2NKU      

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     0.03
  2   0.0001     -1.04    -0.04      -0.32     0.05
  3   0.0764  -1025.30     0.01    -217.09    -0.04
  4   0.0792  -1075.92     0.11    -224.32    -0.05
  5   0.0793  -1078.34    -0.08    -224.48     0.07
  6   0.1776  -3278.60    -0.02    -443.18    -0.07
  7   0.1776  -3278.88     0.07    -443.19    -0.06
  8   0.1778  -3282.91     0.10    -443.37     0.03
  9   0.1778  -3283.95    -0.01    -443.45     0.00
 10   0.1779  -3284.61    -0.03    -443.51    -0.01
 11   0.1862  -3488.69    -0.15    -458.09    -0.08
 12   0.2456  -4896.64    -0.08    -542.78     0.02
 13   0.2458  -4899.23    -0.01    -542.91     0.00
 14   0.2459  -4901.85     0.01    -542.99     0.04
 15   0.2485  -4958.69     0.05    -545.97    -0.00
 16   0.2488  -4966.12     0.07    -546.27     0.02
 17   0.2598  -5202.54    -0.01    -557.90     0.06
 18   1.0542   2718.36    -0.05   -1883.52     0.03
 19   1.0568   2677.75     0.00   -1891.24    -0.01
 20   1.0568   2677.54    -0.02   -1891.36    -0.10
 21   1.0569   2677.33    -0.05   -1891.33    -0.03
 22   1.0569   2677.09    -0.10   -1891.25     0.08
 23   1.0569   2677.20     0.20   -1891.37    -0.01
 24   1.0703   2456.12    -0.00   -1929.73     0.02
 25   1.2232   -996.22     0.06   -2251.17     0.07
 26   1.2341  -1250.44     0.01   -2264.65     0.00
 27   1.3134  -2817.44    -0.01   -2326.54    -0.05
 28   1.4587  -3362.78    -0.03   -2337.47     0.02

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.

13UQ15    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.015    43.032    43.000
ecceobj         0.107     0.107     0.106
incobj         27.251    27.251    27.251
qmin           36.878    36.912    36.835
qmax           49.002    49.088    49.073
amean          42.818    42.836    42.802
amin           42.486    42.496    42.457
amax           43.179    43.225    43.183
emean           0.120     0.121     0.120
emin            0.105     0.105     0.105
emax            0.136     0.136     0.136
imean          27.235    27.238    27.232
imin           26.838    26.849    26.835
imax           27.634    27.645    27.644
excite_mean     0.473     0.473     0.473
fracstop        1.000     1.000     1.000
cjmean          2.809     2.809     2.809

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       181.2     181.5     180.9
kozaiamp        180.0     179.9     180.0