Orbit Fit and Astrometric record for 14UN228

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: 14UN228   
# Created Sat Feb 22 04:29:40 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   41 observations of   41
# Arc:   6.15y
# First observation: 2013/09/02
#  Last observation: 2019/10/26
# Chi-squared of fit:    34.32 DOF:   76 RMS:  0.16
# Min/Max residuals:    -0.25    0.78
# Exact a, adot, b, bdot, g, gdot:
  1.533695E-05  2.559749E-02  7.606803E-06  1.120269E-02  2.601770E-02 -2.063136E-03
# Covariance matrix:
  1.4778E-13 -9.2680E-14  2.0916E-14 -3.7193E-14  5.5464E-14 -5.2322E-13
 -9.2680E-14  1.4920E-13 -3.6675E-14  6.6134E-14  1.1866E-14  9.4215E-13
  2.0916E-14 -3.6675E-14  6.6980E-14 -3.9727E-14 -2.9207E-15 -2.6917E-13
 -3.7193E-14  6.6134E-14 -3.9727E-14  5.4923E-14  5.9047E-15  4.8542E-13
  5.5464E-14  1.1866E-14 -2.9207E-15  5.9047E-15  7.6633E-14  9.2176E-14
 -5.2322E-13  9.4215E-13 -2.6917E-13  4.8542E-13  9.2176E-14  6.9158E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.837683   28.137424    0.754570    0.044984   -0.669913  2456537.933788
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:          333.78522 +/-     0.022
Argument of Peri:       46.59604 +/-     0.034
Long of Asc Node:       18.52621 +/-     0.000
Inclination:            24.01711 +/-     0.000
Eccentricity:         0.17698298 +/-    0.0001
Semi-Major Axis:     46.06326432 +/-    0.0026
Time of Perihelion: 2464853.7290 +/-      11.5
Perihelion:          37.91085033 +/-    0.0032
Aphelion:            54.21567831 +/-    0.0038
Period (y)              312.6369 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.76442422 +/-    0.0004
Ecliptic Y           17.73924586 +/-    0.0002
Ecliptic Z            2.57280697 +/-    0.0000
Ecliptic XDOT        -0.00153707 +/-    0.0000
Ecliptic YDOT         0.00223484 +/-    0.0000
Ecliptic ZDOT         0.00116183 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.11355455 +/-    0.0003
Geocenter to KBO     38.43544749 +/-    0.0004
# Hcoef:  7.56

The following table shows the complete astrometric record for 14UN228. 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 (14UN228) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.43301  01 38 53.134  +14 23 35.21  23.3r 14UN228   568  C~2SDg      
2013 09  02.47614  01 38 52.981  +14 23 35.02  23.5r 14UN228   568  C~2SDg      
2013 09  03.45211  01 38 49.712  +14 23 27.86  23.3r 14UN228   568  C~2SDg      
2013 09  03.49870  01 38 49.543  +14 23 27.55  23.2r 14UN228   568  C~2SDg      
2013 10  08.50533  01 36 15.137  +14 14 43.92  23.3r 14UN228   568  C~2SDg      
2013 10  30.49811  01 34 21.299  +14 06 27.34  22.7r 14UN228   568  C~2SDg      
2013 11  01.50035  01 34 11.166  +14 05 40.23  23.3r 14UN228   568  C~2SDg      
2013 11  28.28696  01 32 11.164  +13 55 53.70  23.3r 14UN228   568  C~2SDg      
2013 12  04.39432  01 31 49.823  +13 54 03.74  23.2r 14UN228   568  C~2SDg      
2013 12  05.28909  01 31 46.948  +13 53 48.59  23.3r 14UN228   568  C~2SDg      
2013 12  29.25967  01 30 56.046  +13 49 15.47  23.5r 14UN228   568  C~2SDg      
2013 12  30.36406  01 30 55.007  +13 49 09.70  23.6r 14UN228   568  C~2SDg      
2014 01  02.24156  01 30 52.921  +13 48 57.81  23.5r 14UN228   568  C~2SDg      
2014 01  02.28865  01 30 52.899  +13 48 57.53  23.3r 14UN228   568  C~2SDg      
2014 01  02.37231  01 30 52.843  +13 48 57.53  23.4r 14UN228   568  C~2SDg      
2014 01  03.21159  01 30 52.403  +13 48 54.85        14UN228   568  C~2SDg      
2014 01  03.25404  01 30 52.386  +13 48 54.81  23.4r 14UN228   568  C~2SDg      
2014 01  03.31834  01 30 52.340  +13 48 54.49  23.6r 14UN228   568  C~2SDg      
2014 07  26.52194  01 44 36.613  +15 28 19.27  22.7r 14UN228   568  C~2SDg      
2014 07  26.56498  01 44 36.633  +15 28 19.99  23.4r 14UN228   568  C~2SDg      
2014 07  26.60835  01 44 36.639  +15 28 20.66  23.3r 14UN228   568  C~2SDg      
2014 08  24.45776  01 44 02.955  +15 31 49.27  23.5r 14UN228   568  C~2SDg      
2014 08  24.53170  01 44 02.764  +15 31 49.25  23.4r 14UN228   568  C~2SDg      
2014 08  30.43607  01 43 46.535  +15 31 35.74  23.5r 14UN228   568  C~2SDg      
2014 08  30.54438  01 43 46.199  +15 31 35.44  23.3r 14UN228   568  C~2SDg      
2014 09  18.46299  01 42 36.341  +15 28 53.94  23.5r 14UN228   568  C~2SDg      
2014 09  18.50571  01 42 36.152  +15 28 53.39  23.4r 14UN228   568  C~2SDg      
2014 09  23.50400  01 42 13.906  +15 27 43.45  23.2r 14UN228   568  C~2SDg      
2014 10  22.28665  01 39 48.711  +15 18 21.87  23.2r 14UN228   568  C~2SDg      
2014 10  22.33133  01 39 48.477  +15 18 20.83  23.6r 14UN228   568  C~2SDg      
2014 10  22.37555  01 39 48.237  +15 18 19.81  23.4r 14UN228   568  C~2SDg      
2014 10  23.47137  01 39 42.464  +15 17 54.76  23.4r 14UN228   568  C~2SDg      
2014 10  25.48732  01 39 31.886  +15 17 08.35  23.6r 14UN228   568  C~2SDg      
2014 11  20.21853  01 37 25.762  +15 07 13.20  23.4r 14UN228   568  C~2SDg      
2014 11  20.35900  01 37 25.133  +15 07 10.09  23.5r 14UN228   568  C~2SDg      
2014 11  21.25530  01 37 21.261  +15 06 50.60  23.4r 14UN228   568  C~2SDg      
2014 11  21.42173  01 37 20.543  +15 06 47.00  23.2r 14UN228   568  C~2SDg      
2015 01  28.26352  01 35 44.952  +14 57 33.75  23.5r 14UN228   568  C~2SDg      
2016 01  07.29613  01 40 06.170  +16 03 46.84  23.8w 14UN228   568  C~2SDg      
2019 10  26.30099  02 04 16.565  +20 58 08.57  23.1G 14UN228   G37              
2019 10  26.35824  02 04 16.252  +20 58 07.52        14UN228   G37              

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     0.11       0.00    -0.14
  2   0.0001      0.00     0.01       0.00    -0.03
  3   0.0028      0.00     0.07       0.00    -0.02
  4   0.0029      0.00    -0.03       0.00     0.02
  5   0.0988      0.00     0.04       0.00     0.03
  6   0.1590      0.00    -0.16       0.00     0.12
  7   0.1645      0.00     0.06       0.00     0.07
  8   0.2378      0.00    -0.02       0.00    -0.03
  9   0.2545      0.00    -0.02       0.00     0.10
 10   0.2570      0.00    -0.03       0.00    -0.03
 11   0.3226      0.00     0.07       0.00    -0.01
 12   0.3256      0.00     0.01       0.00     0.00
 13   0.3335      0.00    -0.02       0.00    -0.03
 14   0.3336      0.00     0.12       0.00    -0.15
 15   0.3339      0.00     0.08       0.00     0.14
 16   0.3361      0.00    -0.11       0.00    -0.02
 17   0.3363      0.00     0.00       0.00     0.06
 18   0.3364      0.00    -0.15       0.00    -0.08
 19   0.8955      0.00    -0.20       0.00    -0.11
 20   0.8956      0.00     0.00       0.00    -0.05
 21   0.8958      0.00     0.01       0.00    -0.04
 22   0.9747      0.00     0.04       0.00     0.00
 23   0.9749      0.00     0.03       0.00     0.02
 24   0.9911      0.00     0.02       0.00    -0.09
 25   0.9914      0.00    -0.01       0.00     0.01
 26   1.0432      0.00    -0.00       0.00     0.04
 27   1.0433      0.00    -0.02       0.00     0.04
 28   1.0570      0.00     0.02       0.00    -0.02
 29   1.1358      0.00    -0.02       0.00     0.07
 30   1.1359      0.00     0.05       0.00     0.03
 31   1.1361      0.00    -0.01       0.00     0.02
 32   1.1391      0.00    -0.04       0.00     0.01
 33   1.1446      0.00     0.02       0.00     0.04
 34   1.2150      0.00     0.02       0.00     0.05
 35   1.2154      0.00    -0.04       0.00     0.01
 36   1.2179      0.00    -0.01       0.00     0.06
 37   1.2183      0.00     0.18       0.00     0.07
 38   1.4041      0.00    -0.06       0.00    -0.25
 39   2.3460      0.00     0.03       0.00     0.03
 40   6.1461      0.00     0.66       0.00     0.53
 41   6.1463      0.00     0.78       0.00     0.67

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.

14UN228    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.293    46.293    46.293
ecceobj         0.179     0.179     0.179
incobj         23.953    23.953    23.953
qmin           37.220    37.185    37.201
qmax           55.084    55.061    55.069
amean          45.938    45.937    45.938
amin           45.551    45.555    45.567
amax           46.378    46.379    46.375
emean           0.173     0.173     0.173
emin            0.158     0.158     0.158
emax            0.188     0.188     0.188
imean          23.873    23.873    23.873
imin           23.495    23.488    23.490
imax           24.289    24.285    24.291
excite_mean     0.440     0.440     0.440
fracstop        1.000     1.000     1.000
cjmean          2.880     2.880     2.880

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       179.8     179.8     179.9
kozaiamp        179.9     179.9     179.9