Orbit Fit and Astrometric record for 14RU86

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: 14RU86    
# Created Fri Dec  3 02:12:36 2021
# Orbit generated from Bernstein formalism
# Fitting     22 observations of     22
# Arc:   4.25y
# First observation: 2014/09/04
#  Last observation: 2018/12/03
Preliminary a, adot, b, bdot, g, gdot:
   0.000087   0.020993  -0.000034  -0.004228   0.023801   0.000000
# Chi-squared of fit:     5.65 DOF:     38 RMS:  0.09
# Min/Max residuals:    -0.30    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.366270E-05  2.129335E-02 -2.119478E-06 -4.296879E-03  2.397066E-02  5.014840E-03
# Covariance matrix:
  2.6244E-13 -2.4056E-14 -1.3079E-15 -6.2536E-15  1.4123E-13  3.7720E-14
 -2.4056E-14  3.0301E-13  2.1368E-14 -7.0713E-14  2.2350E-13  5.2357E-12
 -1.3079E-15  2.1368E-14  1.6909E-13 -6.4517E-14  1.2771E-14  4.4595E-13
 -6.2536E-15 -7.0713E-14 -6.4517E-14  5.3612E-14 -5.5358E-14 -1.4012E-12
  1.4123E-13  2.2350E-13  1.2771E-14 -5.5358E-14  3.2529E-13  3.5725E-12
  3.7720E-14  5.2357E-12  4.4595E-13 -1.4012E-12  3.5725E-12  1.0675E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -28.424892   24.812563    0.693789   -0.350033   -0.647008  2456904.831358
# Heliocentric elements and errors
Epoch:              2456900.5000  =  2014/08/31
Mean Anomaly:           97.92847 +/-     0.083
Argument of Peri:      127.39072 +/-     0.062
Long of Asc Node:      138.22944 +/-     0.001
Inclination:            30.23937 +/-     0.000
Eccentricity:         0.21799929 +/-    0.0003
Semi-Major Axis:     39.46924097 +/-    0.0070
Time of Perihelion: 2432263.2022 +/-      19.7
Perihelion:          30.86497452 +/-    0.0148
Aphelion:            48.07350743 +/-    0.0162
Period (y)              247.9684 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.25766974 +/-    0.0008
Ecliptic Y           15.07716446 +/-    0.0004
Ecliptic Z          -19.85797337 +/-    0.0005
Ecliptic XDOT        -0.00078022 +/-    0.0000
Ecliptic YDOT         0.00231647 +/-    0.0000
Ecliptic ZDOT        -0.00070414 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.37036618 +/-    0.0007
Geocenter to KBO     41.71766719 +/-    0.0010
# Hcoef:  6.97

The following table shows the complete astrometric record for 14RU86. 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 (14RU86) followed by the observatory code and reference code for the source of the astrometry.

2014 09  04.33058  02 13 55.144  -16 51 12.29  23.7g 14RU86    W84  C~52Tx      
2014 09  04.33195  02 13 55.118  -16 51 12.20  23.1r 14RU86    W84  C~52Tx      
2014 09  27.26700  02 12 40.143  -17 08 05.55  23.1r 14RU86    W84  C~52Tx      
2014 09  27.26839  02 12 40.151  -17 08 05.61  23.3i 14RU86    W84  C~52Tx      
2014 09  27.26976  02 12 40.138  -17 08 05.68  23.3g 14RU86    W84  C~52Tx      
2014 12  17.16101  02 06 56.084  -17 25 45.80  23.7g 14RU86    W84  C~52Tx      
2014 12  20.16455  02 06 48.337  -17 24 41.24  23.6r 14RU86    W84  C~52Tx      
2015 01  14.09219  02 06 14.630  -17 11 37.07  23.4r 14RU86    W84  C~52Tx      
2015 12  01.07617  02 12 56.808  -17 15 49.73  22.8r 14RU86    W84  C~52Tx      
2015 12  01.07754  02 12 56.809  -17 15 49.71  22.8i 14RU86    W84  C~52Tx      
2015 12  01.07890  02 12 56.806  -17 15 49.59  23.7g 14RU86    W84  C~52Tx      
2016 09  10.27556  02 23 44.177  -16 27 47.73  23.2r 14RU86    W84  C~52Tx      
2016 09  10.27694  02 23 44.168  -16 27 47.77  24.3g 14RU86    W84  C~52Tx      
2016 12  31.11905  02 16 30.638  -16 52 41.31  23.2i 14RU86    W84  C~52Tx      
2016 12  31.12042  02 16 30.632  -16 52 41.16  23.4r 14RU86    W84  C~52Tx      
2017 11  23.13798  02 23 31.136  -16 47 47.88  23.3r 14RU86    W84  C~52Tx      
2017 11  23.13935  02 23 31.136  -16 47 47.94  23.1i 14RU86    W84  C~52Tx      
2017 12  08.13556  02 22 31.445  -16 46 39.27  24.1g 14RU86    W84  C~52Tx      
2018 01  17.09602  02 21 10.361  -16 29 02.72  22.9r 14RU86    W84  C~52Tx      
2018 01  17.09739  02 21 10.352  -16 29 02.91  23.0i 14RU86    W84  C~52Tx      
2018 01  17.09877  02 21 10.357  -16 29 02.77  24.2g 14RU86    W84  C~52Tx      
2018 12  03.05757  02 27 47.842  -16 32 49.07  23.8g 14RU86    W84  C~52Tx      

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     0.08       0.00    -0.15
     2   0.0000     -0.31    -0.16       0.22     0.12
     3   0.0628  -1378.25    -0.09    -533.60     0.07
     4   0.0628  -1378.17     0.09    -533.70    -0.00
     5   0.0628  -1378.37    -0.01    -533.70     0.02
     6   0.2843  -6348.52     0.00     317.54    -0.30
     7   0.2925  -6427.85    -0.06     418.50     0.06
     8   0.3607  -6587.89     0.07    1325.84     0.03
     9   1.2395  -1331.48    -0.05   -1053.52     0.03
    10   1.2396  -1331.46     0.04   -1053.51     0.00
    11   1.2396  -1331.46     0.11   -1053.38     0.10
    12   2.0176   8362.01     0.10   -1945.28     0.02
    13   2.0176   8361.88     0.04   -1945.27     0.07
    14   2.3239   2032.13    -0.02    -927.89    -0.01
    15   2.3239   2032.10    -0.02    -927.72     0.11
    16   3.2192   7722.23    -0.16   -2979.10    -0.02
    17   3.2192   7722.20    -0.10   -2979.16    -0.11
    18   3.2602   6957.61     0.01   -2582.87    -0.10
    19   3.3697   6290.18     0.15   -1157.06     0.12
    20   3.3697   6289.99    -0.06   -1157.19    -0.06
    21   3.3697   6290.11     0.05   -1157.09    -0.01
    22   4.2457  11477.71     0.01   -3595.96     0.01

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.

14RU86    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.757    39.777    39.737
ecceobj         0.218     0.218     0.217
incobj         30.195    30.196    30.195
qmin           25.952    26.203    25.840
qmax           53.582    53.306    53.487
amean          39.454    39.453    39.453
amin           39.033    39.026    39.048
amax           39.970    39.960    39.935
emean           0.268     0.264     0.271
emin            0.184     0.184     0.182
emax            0.341     0.334     0.344
imean          27.515    27.665    27.412
imin           25.159    25.421    24.952
imax           29.836    29.807    29.837
excite_mean     0.537     0.536     0.537
fracstop        1.000     1.000     1.000
cjmean          2.717     2.716     2.717

libcent 0       180.9     180.0     180.8
libamp  0        68.2      79.5      57.6
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        85.6      85.6      85.7
kozaiamp         52.7      53.3      52.6