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  3 02:12:11 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     76 observations of     76
# Arc:  11.91y
# First observation: 2006/10/13
#  Last observation: 2018/09/11
# Chi-squared of fit:    66.35 DOF:    146 RMS:  0.17
# Min/Max residuals:    -0.35    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.047856E-05  1.652613E-02 -9.173036E-06 -8.543798E-03  2.156274E-02  5.929745E-04
# Covariance matrix:
  2.0669E-11 -4.5160E-12 -9.9521E-12  2.2524E-12 -2.9580E-12 -1.4378E-11
 -4.5160E-12  9.9503E-13  2.2105E-12 -5.0028E-13  6.5884E-13  3.1936E-12
 -9.9521E-12  2.2105E-12  5.6149E-12 -1.1938E-12  1.4850E-12  7.1557E-12
  2.2524E-12 -5.0028E-13 -1.1938E-12  2.6197E-13 -3.3629E-13 -1.6195E-12
 -2.9580E-12  6.5884E-13  1.4850E-12 -3.3629E-13  5.1950E-13  2.1468E-12
 -1.4378E-11  3.1936E-12  7.1557E-12 -1.6195E-12  2.1468E-12  1.0338E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.294853    8.328922   -0.202726    0.005159   -0.980903  2454021.936044
# Heliocentric elements and errors
Epoch:              2454022.5000  =  2006/10/14
Mean Anomaly:          159.07701 +/-     0.075
Argument of Peri:       16.13346 +/-     0.074
Long of Asc Node:      189.12675 +/-     0.000
Inclination:            27.40460 +/-     0.000
Eccentricity:         0.11568230 +/-    0.0000
Semi-Major Axis:     42.68013398 +/-    0.0019
Time of Perihelion: 2409019.4453 +/-      21.3
Perihelion:          37.74279774 +/-    0.0024
Aphelion:            47.61747023 +/-    0.0027
Period (y)              278.8347 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.82491560 +/-    0.0015
Ecliptic Y            7.05716788 +/-    0.0004
Ecliptic Z            0.23823119 +/-    0.0001
Ecliptic XDOT        -0.00021905 +/-    0.0000
Ecliptic YDOT         0.00208338 +/-    0.0000
Ecliptic ZDOT        -0.00108447 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.35431191 +/-    0.0015
Geocenter to KBO     46.37631201 +/-    0.0016
# Hcoef:  6.22

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.

2006 10  13.43529  00 30 08.08   +03 34 27.1   23.1r 13UQ15    568  C~4Nl8      
2006 10  13.47454  00 30 07.94   +03 34 25.9   23.2r 13UQ15    568  C~4Nl8      
2006 10  13.51674  00 30 07.74   +03 34 24.5   23.2r 13UQ15    568  C~4Nl8      
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      
2013 11  22.13909  00 57 31.278  +02 44 06.68  22.9i 13UQ15    W84  C~4yRJ      
2013 11  22.13909  00 57 31.28   +02 44 06.7   22.9i 13UQ15    W84  C~3clS      
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  02.29411  01 04 49.441  +03 01 21.60  23.1g 13UQ15    W84  C~4yRJ      
2014 10  02.29411  01 04 49.44   +03 01 21.6   23.5g 13UQ15    W84  C~3clS      
2014 10  02.29548  01 04 49.444  +03 01 21.61  22.9r 13UQ15    W84  C~4yRJ      
2014 10  02.29548  01 04 49.44   +03 01 21.6   23.0r 13UQ15    W84  C~3clS      
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  14.05174  01 02 07.629  +02 41 52.54  23.8g 13UQ15    W84  C~4yRJ      
2014 11  14.05174  01 02 07.63   +02 41 52.5   23.7g 13UQ15    W84  C~3clS      
2014 11  14.07483  01 02 07.557  +02 41 52.10  23.5r 13UQ15    W84  C~4yRJ      
2014 11  14.07483  01 02 07.56   +02 41 52.1   23.4r 13UQ15    W84  C~3clS      
2014 11  14.07621  01 02 07.549  +02 41 52.14  23.0i 13UQ15    W84  C~4yRJ      
2014 11  14.07621  01 02 07.55   +02 41 52.1   23.1i 13UQ15    W84  C~3clS      
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      
2015 10  17.16823  01 08 03.757  +02 48 53.46  23.4r 13UQ15    W84  C~4yRJ      
2015 10  17.16823  01 08 03.76   +02 48 53.5   23.5r 13UQ15    W84  C~3clS      
2015 11  07.12015  01 06 43.70   +02 39 29.2   22.4r 13UQ15    W84  C~3clS      
2016 08  16.392106 01 15 39.16   +03 12 02.9   23.0i 13UQ15    W84  C~352E      
2016 08  16.39263  01 15 39.164  +03 12 02.71  22.9i 13UQ15    W84  C~4yRJ      
2016 08  26.331829 01 15 17.26   +03 08 11.1   22.6r 13UQ15    W84  C~352E      
2016 08  30.35818  01 15 06.668  +03 06 28.99  24.0g 13UQ15    W84  C~4yRJ      
2016 08  30.35818  01 15 06.67   +03 06 29.0   24.0g 13UQ15    W84  C~3clS      
2016 10  29.192593 01 11 25.86   +02 37 42.6   22.9i 13UQ15    W84  C~352E      
2016 10  29.19312  01 11 25.864  +02 37 42.62  23.3i 13UQ15    W84  C~4yRJ      
2016 10  29.19449  01 11 25.858  +02 37 42.56  23.2r 13UQ15    W84  C~4yRJ      
2016 10  29.19449  01 11 25.86   +02 37 42.6   23.2r 13UQ15    W84  C~3clS      
2016 10  29.19587  01 11 25.853  +02 37 42.49  23.6g 13UQ15    W84  C~4yRJ      
2016 10  29.19587  01 11 25.85   +02 37 42.5   23.7g 13UQ15    W84  C~3clS      
2016 11  05.17688  01 10 59.827  +02 34 44.62  22.7r 13UQ15    W84  C~4yRJ      
2016 11  05.17688  01 10 59.83   +02 34 44.6   22.9r 13UQ15    W84  C~3clS      
2016 11  05.17825  01 10 59.818  +02 34 44.66  22.6i 13UQ15    W84  C~4yRJ      
2016 11  05.17825  01 10 59.82   +02 34 44.7   22.7i 13UQ15    W84  C~3clS      
2016 11  05.17962  01 10 59.811  +02 34 44.64  23.2g 13UQ15    W84  C~4yRJ      
2016 11  05.17962  01 10 59.81   +02 34 44.7   23.2g 13UQ15    W84  C~3clS      
2017 08  22.412326 01 19 37.62   +03 04 32.7   22.6i 13UQ15    W84  C~352E      
2017 08  22.41286  01 19 37.617  +03 04 32.70  22.5i 13UQ15    W84  C~4yRJ      
2017 08  27.377153 01 19 25.97   +03 02 31.5   23.3r 13UQ15    W84  C~352E      
2017 08  27.37768  01 19 25.974  +03 02 31.54  23.3r 13UQ15    W84  C~4yRJ      
2017 08  27.396713 01 19 25.92   +03 02 31.0   23.3g 13UQ15    W84  C~352E      
2017 08  27.39723  01 19 25.919  +03 02 31.08  23.2g 13UQ15    W84  C~4yRJ      
2017 09  18.304248 01 18 18.66   +02 52 26.3   23.2g 13UQ15    W84  C~352E      
2017 09  18.30477  01 18 18.664  +02 52 26.29  23.0g 13UQ15    W84  C~4yRJ      
2017 09  24.256979 01 17 56.89   +02 49 29.2   22.8z 13UQ15    W84  C~352E      
2017 09  24.25751  01 17 56.892  +02 49 29.20  22.8z 13UQ15    W84  C~4yRJ      
2018 09  11.33623  01 22 54.778  +02 50 33.36  23.0i 13UQ15    W84  C~4yRJ      
2018 09  11.35443  01 22 54.713  +02 50 33.05  23.1r 13UQ15    W84  C~4yRJ      
2018 09  11.35579  01 22 54.731  +02 50 32.93  23.4g 13UQ15    W84  C~4yRJ      

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     0.68
     2   0.0001      0.00     0.31       0.00     0.68
     3   0.0002      0.00    -0.19       0.00     0.56
     4   6.8038      0.00    -0.01       0.00    -0.18
     5   6.8039      0.00    -0.08       0.00    -0.19
     6   6.8802      0.00    -0.01       0.00    -0.25
     7   6.8829      0.00     0.09       0.00    -0.23
     8   6.8831      0.00    -0.14       0.00    -0.18
     9   6.9814      0.00    -0.04       0.00    -0.29
    10   6.9814      0.00     0.03       0.00    -0.25
    11   6.9816      0.00     0.02       0.00    -0.15
    12   6.9816      0.00    -0.06       0.00    -0.22
    13   6.9816      0.00    -0.08       0.00    -0.24
    14   6.9900      0.00    -0.16       0.00    -0.35
    15   7.0494      0.00    -0.15       0.00    -0.23
    16   7.0495      0.00    -0.08       0.00    -0.22
    17   7.0497      0.00    -0.07       0.00    -0.18
    18   7.0522      0.00    -0.03       0.00    -0.20
    19   7.0526      0.00    -0.02       0.00    -0.17
    20   7.0635      0.00    -0.11       0.00    -0.16
    21   7.1094      0.00    -0.00       0.00    -0.23
    22   7.1094      0.00    -0.03       0.00    -0.25
    23   7.8580      0.00    -0.04       0.00    -0.06
    24   7.8606      0.00     0.03       0.00    -0.08
    25   7.8606      0.00     0.04       0.00    -0.17
    26   7.8606      0.00    -0.01       0.00    -0.12
    27   7.8606      0.00    -0.10       0.00    -0.04
    28   7.8606      0.00     0.21       0.00    -0.00
    29   7.8740      0.00     0.01       0.00    -0.05
    30   7.9695      0.00    -0.16       0.00    -0.13
    31   7.9695      0.00    -0.15       0.00    -0.13
    32   7.9695      0.00    -0.08       0.00    -0.08
    33   7.9695      0.00    -0.02       0.00    -0.07
    34   8.0270      0.00     0.04       0.00     0.04
    35   8.0378      0.00     0.02       0.00    -0.04
    36   8.0866      0.00     0.06       0.00    -0.19
    37   8.0866      0.00     0.04       0.00    -0.15
    38   8.0866      0.00     0.13       0.00    -0.09
    39   8.0866      0.00     0.08       0.00    -0.09
    40   8.0866      0.00     0.04       0.00    -0.06
    41   8.0866      0.00     0.03       0.00    -0.02
    42   8.1172      0.00     0.02       0.00    -0.09
    43   8.2624      0.00    -0.02       0.00    -0.00
    44   9.0095      0.00     0.22       0.00    -0.13
    45   9.0095      0.00     0.17       0.00    -0.17
    46   9.0669      0.00    -0.18       0.00     0.08
    47   9.8425      0.00    -0.03       0.00     0.22
    48   9.8425      0.00     0.05       0.00     0.04
    49   9.8697      0.00     0.14       0.00    -0.17
    50   9.8807      0.00     0.13       0.00     0.03
    51   9.8807      0.00     0.10       0.00     0.02
    52  10.0445      0.00    -0.03       0.00     0.08
    53  10.0445      0.00     0.06       0.00     0.12
    54  10.0445      0.00     0.08       0.00     0.13
    55  10.0445      0.00     0.05       0.00     0.09
    56  10.0445      0.00     0.01       0.00     0.07
    57  10.0445      0.00     0.05       0.00     0.06
    58  10.0636      0.00     0.13       0.00     0.05
    59  10.0636      0.00     0.08       0.00     0.07
    60  10.0636      0.00     0.05       0.00     0.19
    61  10.0636      0.00     0.02       0.00     0.15
    62  10.0636      0.00    -0.02       0.00     0.22
    63  10.0636      0.00    -0.01       0.00     0.16
    64  10.8583      0.00    -0.10       0.00     0.29
    65  10.8583      0.00    -0.12       0.00     0.30
    66  10.8718      0.00    -0.04       0.00     0.12
    67  10.8718      0.00     0.04       0.00     0.17
    68  10.8719      0.00    -0.04       0.00     0.11
    69  10.8719      0.00    -0.03       0.00     0.20
    70  10.9319      0.00    -0.02       0.00     0.19
    71  10.9319      0.00     0.07       0.00     0.19
    72  10.9482      0.00     0.11       0.00     0.29
    73  10.9482      0.00     0.17       0.00     0.31
    74  11.9121      0.00    -0.13       0.00     0.07
    75  11.9122      0.00    -0.21       0.00     0.27
    76  11.9122      0.00     0.13       0.00     0.19

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        43.016    43.016    43.016
ecceobj         0.107     0.107     0.107
incobj         27.253    27.253    27.253
qmin           36.886    36.911    36.905
qmax           49.002    49.005    48.996
amean          42.818    42.818    42.818
amin           42.474    42.482    42.477
amax           43.182    43.178    43.181
emean           0.120     0.120     0.120
emin            0.105     0.105     0.105
emax            0.135     0.135     0.135
imean          27.237    27.237    27.237
imin           26.833    26.843    26.839
imax           27.651    27.654    27.648
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       181.0     181.0     181.0
kozaiamp        180.0     179.9     180.0