Orbit Fit and Astrometric record for 14UD228

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: 14UD228   
# Created Sat Nov 27 02:12:52 2021
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     34
# Arc:   4.06y
# First observation: 2013/08/09
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000007   0.010236  -0.000003  -0.000975   0.015362   0.000000
# Chi-squared of fit:     7.62 DOF:     62 RMS:  0.08
# Min/Max residuals:    -0.24    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.101987E-05  1.027933E-02 -1.189288E-06 -9.827755E-04  1.539994E-02  3.128004E-03
# Covariance matrix:
  1.7796E-13 -5.9730E-14 -2.0561E-15  1.0329E-15  7.7237E-14 -3.2848E-13
 -5.9730E-14  1.2570E-13  3.9359E-15 -9.3701E-15  5.1598E-14  2.8015E-12
 -2.0561E-15  3.9359E-15  8.9380E-14 -4.6367E-14  1.1700E-15  1.3551E-13
  1.0329E-15 -9.3701E-15 -4.6367E-14  4.6900E-14 -6.6360E-15 -3.2957E-13
  7.7237E-14  5.1598E-14  1.1700E-15 -6.6360E-15  1.1922E-13  1.9644E-12
 -3.2848E-13  2.8015E-12  1.3551E-13 -3.2957E-13  1.9644E-12  9.8500E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.520929   27.151184    0.956617    0.026914   -0.339990  2456513.995978
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:          109.69471 +/-     0.135
Argument of Peri:        0.42057 +/-     0.099
Long of Asc Node:      246.29896 +/-     0.006
Inclination:             6.97725 +/-     0.001
Eccentricity:         0.32741151 +/-    0.0004
Semi-Major Axis:     54.94903581 +/-    0.0199
Time of Perihelion: 2411176.7429 +/-      50.1
Perihelion:          36.95808916 +/-    0.0278
Aphelion:            72.93998246 +/-    0.0359
Period (y)              407.3318 +/-      0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           58.33963000 +/-    0.0013
Ecliptic Y           28.84796171 +/-    0.0006
Ecliptic Z            5.11837704 +/-    0.0001
Ecliptic XDOT        -0.00033464 +/-    0.0000
Ecliptic YDOT         0.00188450 +/-    0.0000
Ecliptic ZDOT        -0.00013020 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   65.28334479 +/-    0.0012
Geocenter to KBO     64.93532408 +/-    0.0015
# Hcoef:  6.06

The following table shows the complete astrometric record for 14UD228. 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 (14UD228) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.49520  01 34 04.332  +14 40 17.18  24.3r 14UD228   568  C~2SDe      
2013 08  09.53863  01 34 04.306  +14 40 17.32  23.9r 14UD228   568  C~2SDe      
2013 09  02.41327  01 33 27.743  +14 38 06.58  24.4r 14UD228   568  C~2SDe      
2013 09  02.45665  01 33 27.658  +14 38 06.24  24.1r 14UD228   568  C~2SDe      
2013 09  03.43268  01 33 25.584  +14 37 57.08  24.3r 14UD228   568  C~2SDe      
2013 09  03.47930  01 33 25.477  +14 37 56.62  24.2r 14UD228   568  C~2SDe      
2013 11  28.28696  01 29 22.961  +14 14 07.71  24.3r 14UD228   568  C~2SDe      
2013 12  04.39432  01 29 10.099  +14 12 30.10  23.8r 14UD228   568  C~2SDe      
2013 12  05.28909  01 29 08.373  +14 12 16.19  24.1r 14UD228   568  C~2SDe      
2013 12  29.25967  01 28 37.432  +14 07 26.60  24.1r 14UD228   568  C~2SDe      
2013 12  30.36406  01 28 36.789  +14 07 17.44  24.7r 14UD228   568  C~2SDe      
2014 01  02.24156  01 28 35.479  +14 06 55.12  24.1r 14UD228   568  C~2SDe      
2014 01  02.28865  01 28 35.454  +14 06 54.51  24.0r 14UD228   568  C~2SDe      
2014 01  03.21159  01 28 35.138  +14 06 48.26  24.5r 14UD228   568  C~2SDe      
2014 01  03.25404  01 28 35.129  +14 06 47.90  24.3r 14UD228   568  C~2SDe      
2014 08  23.54865  01 36 07.924  +14 49 10.70  24.3r 14UD228   568  C~2SDe      
2014 08  23.59554  01 36 07.847  +14 49 10.17  24.0r 14UD228   568  C~2SDe      
2014 08  27.44097  01 36 01.326  +14 48 45.23  24.1r 14UD228   568  C~2SDe      
2014 08  27.53681  01 36 01.151  +14 48 44.50  24.1r 14UD228   568  C~2SDe      
2014 09  18.37151  01 35 11.849  +14 44 57.72  24.5r 14UD228   568  C~2SDe      
2014 09  23.45425  01 34 57.919  +14 43 46.96  24.1r 14UD228   568  C~2SDe      
2014 10  22.27410  01 33 30.023  +14 35 35.73  24.4r 14UD228   568  C~2SDe      
2014 10  22.31909  01 33 29.873  +14 35 34.89  24.1r 14UD228   568  C~2SDe      
2014 10  22.36391  01 33 29.728  +14 35 34.07  24.1r 14UD228   568  C~2SDe      
2014 10  23.45625  01 33 26.287  +14 35 13.48  24.3r 14UD228   568  C~2SDe      
2014 10  25.47218  01 33 19.967  +14 34 35.41  24.2r 14UD228   568  C~2SDe      
2014 11  20.20326  01 32 05.037  +14 26 33.06  24.6r 14UD228   568  C~2SDe      
2014 11  20.34387  01 32 04.680  +14 26 30.38  24.1r 14UD228   568  C~2SDe      
2014 11  21.24351  01 32 02.373  +14 26 14.45  24.0r 14UD228   568  C~2SDe      
2015 02  19.23532  01 31 44.875  +14 17 39.53  24.2r 14UD228   568  C~2SDe      
2016 01  03.25961  01 33 15.807  +14 26 40.00  23.8r 14UD228   568  C~2SDe      
2016 01  03.32552  01 33 15.770  +14 26 39.72  24.0r 14UD228   568  C~2SDe      
2017 08  25.60644  01 43 03.142  +15 17 15.63  24.1w 14UD228   568  C~2SDe      
2017 08  30.62762  01 42 54.390  +15 16 41.39  24.1w 14UD228   568  C~2SDe      

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    -0.10       0.00     0.04
     2   0.0001     -0.30     0.19       0.27     0.14
     3   0.0655   -541.93    -0.02      72.91    -0.07
     4   0.0656   -543.20     0.11      73.05    -0.06
     5   0.0683   -574.56     0.11      75.56    -0.02
     6   0.0684   -576.18     0.04      75.70    -0.01
     7   0.3033  -4378.38    -0.14      45.91     0.06
     8   0.3201  -4588.36    -0.02      24.59     0.23
     9   0.3225  -4616.84    -0.00      20.98    -0.04
    10   0.3881  -5142.47    -0.00     -80.96    -0.04
    11   0.3912  -5154.57     0.06     -85.99     0.06
    12   0.3990  -5180.57     0.10     -99.64    -0.03
    13   0.3992  -5181.13    -0.07    -100.07    -0.24
    14   0.4017  -5187.72    -0.05    -104.17     0.06
    15   0.4018  -5187.98     0.01    -104.46    -0.04
    16   1.0378   1863.95    -0.05    -157.30     0.11
    17   1.0379   1862.72    -0.13    -157.38    -0.13
    18   1.0484   1765.55    -0.00    -146.21    -0.00
    19   1.0487   1762.92     0.00    -145.97    -0.06
    20   1.1085   1014.35    -0.01     -96.68    -0.15
    21   1.1224    800.39    -0.05     -88.83     0.05
    22   1.2013   -566.42     0.05     -79.57     0.01
    23   1.2014   -568.75    -0.04     -79.56     0.04
    24   1.2016   -571.01    -0.06     -79.55     0.07
    25   1.2045   -625.03    -0.09     -80.40     0.04
    26   1.2101   -724.35    -0.05     -82.19     0.05
    27   1.2805  -1913.62    -0.07    -131.20     0.12
    28   1.2809  -1919.42     0.04    -131.79    -0.11
    29   1.2834  -1956.45    -0.03    -134.27    -0.02
    30   1.5297  -2382.45     0.15    -519.47     0.01
    31   2.4005   -954.88     0.06    -502.34    -0.19
    32   2.4006   -955.48     0.05    -502.40     0.04
    33   4.0441   8085.82     0.00    -751.67     0.04
    34   4.0579   7955.10     0.02    -738.50     0.04

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.

14UD228    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        55.264    55.322    55.205
ecceobj         0.326     0.327     0.324
incobj          6.974     6.975     6.975
qmin           35.970    35.888    36.055
qmax           74.513    75.040    74.469
amean          54.811    54.898    54.788
amin           54.191    54.304    54.177
amax           55.586    55.728    55.583
emean           0.329     0.331     0.328
emin            0.317     0.318     0.317
emax            0.342     0.347     0.340
imean           8.161     8.172     8.172
imin            7.576     7.598     7.619
imax            8.783     8.807     8.544
excite_mean     0.359     0.360     0.358
fracstop        1.000     1.000     1.000
cjmean          3.071     3.070     3.072

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       171.1     172.3     168.3
kozaiamp        180.0     180.0     180.0