Orbit Fit and Astrometric record for 12UC178

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: 12UC178   
# Created Thu Feb 21 02:09:23 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   87 observations of   87
# Arc:   7.32y
# First observation: 2010/10/09
#  Last observation: 2018/02/03
# Chi-squared of fit:    57.35 DOF:  168 RMS:  0.14
# Min/Max residuals:    -0.40    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.696016E-05  2.841505E-02 -4.636017E-07 -7.451107E-04  2.688104E-02  4.278165E-03
# Covariance matrix:
  1.8964E-13 -7.8407E-14 -2.4524E-15  1.6861E-15 -1.7074E-14 -2.8201E-13
 -7.8407E-14  5.5270E-14  2.0101E-15 -1.4260E-15  3.7675E-14  2.3927E-13
 -2.4524E-15  2.0101E-15  1.0779E-13 -1.8996E-14  1.2266E-15  9.4198E-15
  1.6861E-15 -1.4260E-15 -1.8996E-14  4.0160E-15 -9.8013E-16 -6.6637E-15
 -1.7074E-14  3.7675E-14  1.2266E-15 -9.8013E-16  8.2150E-14  1.6630E-13
 -2.8201E-13  2.3927E-13  9.4198E-15 -6.6637E-15  1.6630E-13  1.1177E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.962272   50.502839    0.563731   -0.028103   -0.819729  2455478.923186
# Heliocentric elements and errors
Epoch:              2455478.5000  =  2010/10/09
Mean Anomaly:           44.36240 +/-     0.006
Argument of Peri:      171.19625 +/-     0.010
Long of Asc Node:      178.19194 +/-     0.003
Inclination:             2.45384 +/-     0.000
Eccentricity:         0.17083018 +/-    0.0000
Semi-Major Axis:     42.48651909 +/-    0.0018
Time of Perihelion: 2443013.6332 +/-       1.9
Perihelion:          35.22853918 +/-    0.0022
Aphelion:            49.74449900 +/-    0.0026
Period (y)              276.9395 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.60782515 +/-    0.0003
Ecliptic Y           28.96303340 +/-    0.0003
Ecliptic Z           -1.27382837 +/-    0.0000
Ecliptic XDOT        -0.00195778 +/-    0.0000
Ecliptic YDOT         0.00218115 +/-    0.0000
Ecliptic ZDOT        -0.00009078 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.02655034 +/-    0.0003
Geocenter to KBO     37.20088024 +/-    0.0004
# Hcoef:  6.77

The following table shows the complete astrometric record for 12UC178. 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 (12UC178) followed by the observatory code and reference code for the source of the astrometry.

2010 10  09.42242  03 14 25.544  +15 58 58.62  23.1w 12UC178   F51  C~1w3s      
2010 10  09.43851  03 14 25.471  +15 58 58.55  22.9w 12UC178   F51  C~1w3s      
2010 10  09.45463  03 14 25.400  +15 58 58.19  22.5w 12UC178   F51  C~1w3s      
2010 10  09.47073  03 14 25.329  +15 58 57.85  22.7w 12UC178   F51  C~1w3s      
2010 10  29.58061  03 12 49.934  +15 52 04.36  22.7G 12UC178   F51  C~2rXv      
2011 01  24.27868  03 07 07.186  +15 30 41.33  22.3G 12UC178   F51  C~2rXv      
2012 10  21.54866  03 26 37.913  +16 39 49.75  22.5w 12UC178   F51  C~1w3s      
2012 10  21.56473  03 26 37.851  +16 39 49.46  22.6w 12UC178   F51  C~1w3s      
2012 10  21.58076  03 26 37.752  +16 39 49.05  22.4w 12UC178   F51  C~1w3s      
2012 10  21.59688  03 26 37.654  +16 39 48.71  22.2w 12UC178   F51  C~1w3s      
2012 11  06.52875  03 25 16.876  +16 34 29.71  22.4G 12UC178   F51  C~2rXv      
2012 11  06.54188  03 25 16.791  +16 34 29.46  21.3i 12UC178   F51  C~1w3s      
2012 11  07.38353  03 25 12.322  +16 34 12.30  22.2w 12UC178   F51  C~1w3s      
2012 11  07.41388  03 25 12.190  +16 34 11.54  23.0G 12UC178   F51  C~2rXv      
2012 12  10.27645  03 22 20.610  +16 23 38.52  22.4w 12UC178   F51  C~1w3s      
2012 12  10.29190  03 22 20.536  +16 23 38.13  22.5w 12UC178   F51  C~1w3s      
2012 12  10.31752  03 22 20.417  +16 23 37.89  22.4w 12UC178   F51  C~1w3s      
2013 11  24.30079  03 30 15.963  +16 50 06.70  22.4w 12UC178   F51  C~1w3s      
2013 11  24.31407  03 30 15.917  +16 50 06.32  22.3w 12UC178   F51  C~1w3s      
2013 11  24.32740  03 30 15.833  +16 50 06.10  22.6w 12UC178   F51  C~1w3s      
2013 11  24.34073  03 30 15.748  +16 50 05.94  22.3w 12UC178   F51  C~1w3s      
2014 07  31.60274  03 41 08.090  +17 30 27.14  22.6G 12UC178   F51  C~2rXv      
2014 10  03.62584  03 40 54.388  +17 25 56.66  22.6G 12UC178   F51  C~2rXv      
2014 10  25.62107  03 39 23.751  +17 19 59.85  22.8G 12UC178   F51  C~2rXv      
2014 11  18.50533  03 37 19.647  +17 12 32.64  22.0G 12UC178   F51  C~2rXv      
2014 11  28.52408  03 36 25.779  +17 09 27.74  22.0G 12UC178   F51  C~2rXv      
2014 12  10.47480  03 35 24.353  +17 06 03.87  22.4G 12UC178   F51  C~2rXv      
2015 01  11.34846  03 33 19.555  +16 59 48.64  23.0G 12UC178   F51  C~2rXv      
2015 01  11.37397  03 33 19.495  +16 59 48.75  21.8G 12UC178   F51  C~2rXv      
2015 01  14.32605  03 33 12.109  +16 59 30.58  22.4G 12UC178   F51  C~2rXv      
2015 01  14.33883  03 33 12.068  +16 59 30.37  22.8G 12UC178   F51  C~2rXv      
2015 01  14.36435  03 33 12.012  +16 59 30.36  22.6G 12UC178   F51  C~2rXv      
2015 02  01.32215  03 32 46.108  +16 58 51.33  22.2G 12UC178   F51  C~2rXv      
2015 07  26.59879  03 47 06.549  +17 48 10.52  22.1G 12UC178   F51  C~2rXv      
2015 08  30.55245  03 48 14.751  +17 49 40.64  22.4G 12UC178   F51  C~2rXv      
2015 09  09.52354  03 48 11.161  +17 48 52.49  22.7G 12UC178   F51  C~2rXv      
2015 09  09.53533  03 48 11.140  +17 48 52.47  22.4G 12UC178   F51  C~2rXv      
2015 09  09.54712  03 48 11.119  +17 48 52.30  23.1G 12UC178   F51  C~2rXv      
2015 09  09.55897  03 48 11.131  +17 48 52.31  22.5G 12UC178   F51  C~2rXv      
2015 10  08.43310  03 47 05.026  +17 43 47.37  22.8G 12UC178   F51  C~2rXv      
2015 10  08.44490  03 47 04.978  +17 43 47.10  22.9G 12UC178   F51  C~2rXv      
2015 10  08.45668  03 47 04.929  +17 43 47.21  22.8G 12UC178   F51  C~2rXv      
2015 10  08.46842  03 47 04.889  +17 43 46.92  22.7G 12UC178   F51  C~2rXv      
2015 10  09.42987  03 47 01.422  +17 43 33.02  22.9G 12UC178   F51  C~2rXv      
2015 10  09.44165  03 47 01.370  +17 43 33.04  22.9G 12UC178   F51  C~2rXv      
2015 10  09.45342  03 47 01.322  +17 43 32.89  23.0G 12UC178   F51  C~2rXv      
2015 12  10.27778  03 41 54.757  +17 25 54.54  22.7G 12UC178   F51  C~2rXv      
2015 12  13.23695  03 41 40.129  +17 25 09.33  22.9G 12UC178   F51  C~2rXv      
2015 12  13.24989  03 41 40.058  +17 25 09.23  22.7G 12UC178   F51  C~2rXv      
2015 12  13.26289  03 41 39.995  +17 25 08.78  23.1G 12UC178   F51  C~2rXv      
2015 12  13.43994  03 41 39.096  +17 25 06.28  22.4G 12UC178   F51  C~2rXv      
2015 12  13.45425  03 41 39.035  +17 25 05.80  22.6G 12UC178   F51  C~2rXv      
2015 12  13.46842  03 41 38.985  +17 25 05.87  22.5G 12UC178   F51  C~2rXv      
2016 01  08.34347  03 39 53.657  +17 20 01.78  22.6G 12UC178   F51  C~2rXv      
2016 01  08.35710  03 39 53.602  +17 20 01.75  22.5G 12UC178   F51  C~2rXv      
2016 01  08.37071  03 39 53.560  +17 20 01.59  22.2G 12UC178   F51  C~2rXv      
2016 01  08.38439  03 39 53.517  +17 20 01.40  22.3G 12UC178   F51  C~2rXv      
2016 02  06.30220  03 39 05.269  +17 18 41.99  22.5G 12UC178   F51  C~2rXv      
2016 10  07.47374  03 53 29.939  +18 01 49.51  22.8G 12UC178   F51  C~2rXv      
2016 10  25.56444  03 52 15.768  +17 57 18.66  22.6G 12UC178   F51  C~2rXv      
2016 11  26.49563  03 49 29.521  +17 48 11.38  22.6G 12UC178   F51  C~2rXv      
2016 12  24.37333  03 47 10.717  +17 41 17.94  22.3G 12UC178   F51  C~2rXv      
2017 08  05.61194  04 00 07.230  +18 23 20.69  22.8G 12UC178   F51  C~2rXv      
2017 10  28.56014  03 58 26.529  +18 13 52.53  22.9G 12UC178   F51  C~2rXv      
2017 10  28.57253  03 58 26.456  +18 13 52.19  22.1G 12UC178   F51  C~2rXv      
2017 10  28.58492  03 58 26.412  +18 13 52.01  22.4G 12UC178   F51  C~2rXv      
2017 10  28.59723  03 58 26.351  +18 13 52.08  22.6G 12UC178   F51  C~2rXv      
2017 10  30.56173  03 58 16.949  +18 13 20.51  22.2G 12UC178   F51  C~2rXv      
2017 10  30.57447  03 58 16.864  +18 13 20.57  22.3G 12UC178   F51  C~2rXv      
2017 10  30.58712  03 58 16.819  +18 13 20.22  22.1G 12UC178   F51  C~2rXv      
2017 10  30.59972  03 58 16.743  +18 13 19.88  22.0G 12UC178   F51  C~2rXv      
2017 11  17.50033  03 56 44.202  +18 08 24.93  22.7G 12UC178   F51  C~2rXv      
2017 11  17.51238  03 56 44.132  +18 08 25.01  23.0G 12UC178   F51  C~2rXv      
2017 11  17.52445  03 56 44.075  +18 08 24.60  22.4G 12UC178   F51  C~2rXv      
2017 11  17.53655  03 56 44.034  +18 08 24.60  22.6G 12UC178   F51  C~2rXv      
2017 11  21.36159  03 56 23.346  +18 07 21.16  22.5G 12UC178   F51  C~2rXv      
2017 11  21.37462  03 56 23.264  +18 07 20.75  23.2G 12UC178   F51  C~2rXv      
2017 11  21.38764  03 56 23.190  +18 07 20.66  22.5G 12UC178   F51  C~2rXv      
2017 11  21.40079  03 56 23.124  +18 07 20.51  22.4G 12UC178   F51  C~2rXv      
2017 12  08.28594  03 54 52.753  +18 02 52.89  22.2G 12UC178   F51  C~2rXv      
2017 12  08.30062  03 54 52.661  +18 02 52.73  22.4G 12UC178   F51  C~2rXv      
2017 12  08.31532  03 54 52.591  +18 02 52.50  22.5G 12UC178   F51  C~2rXv      
2017 12  08.33015  03 54 52.520  +18 02 52.09  22.5G 12UC178   F51  C~2rXv      
2017 12  09.27373  03 54 47.644  +18 02 38.17  22.5G 12UC178   F51  C~2rXv      
2017 12  09.30092  03 54 47.491  +18 02 37.91  22.1G 12UC178   F51  C~2rXv      
2017 12  09.31453  03 54 47.419  +18 02 37.55  22.1G 12UC178   F51  C~2rXv      
2018 02  03.31902  03 51 42.149  +17 55 17.32  22.9G 12UC178   F51  C~2rXv      

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    -0.05       0.00    -0.01
  2   0.0000      0.00    -0.11       0.00     0.22
  3   0.0001      0.00    -0.14       0.00     0.16
  4   0.0001      0.00    -0.17       0.00     0.12
  5   0.0552      0.00     0.19       0.00    -0.39
  6   0.2926      0.00     0.15       0.00     0.07
  7   2.0346      0.00    -0.02       0.00    -0.10
  8   2.0346      0.00     0.21       0.00    -0.07
  9   2.0347      0.00    -0.11       0.00    -0.17
 10   2.0347      0.00    -0.40       0.00    -0.20
 11   2.0783      0.00     0.26       0.00    -0.07
 12   2.0784      0.00     0.05       0.00    -0.05
 13   2.0807      0.00    -0.12       0.00     0.04
 14   2.0807      0.00     0.37       0.00    -0.10
 15   2.1707      0.00    -0.14       0.00     0.15
 16   2.1708      0.00    -0.13       0.00     0.01
 17   2.1708      0.00    -0.05       0.00     0.20
 18   3.1263      0.00    -0.15       0.00     0.15
 19   3.1263      0.00     0.24       0.00     0.02
 20   3.1264      0.00     0.07       0.00     0.05
 21   3.1264      0.00    -0.12       0.00     0.14
 22   3.8088      0.00    -0.06       0.00    -0.09
 23   3.9841      0.00     0.05       0.00     0.23
 24   4.0443      0.00     0.54       0.00    -0.03
 25   4.1097      0.00     0.09       0.00     0.08
 26   4.1372      0.00     0.18       0.00     0.04
 27   4.1699      0.00    -0.11       0.00    -0.03
 28   4.2572      0.00    -0.11       0.00    -0.24
 29   4.2572      0.00     0.03       0.00     0.05
 30   4.2653      0.00     0.02       0.00     0.03
 31   4.2653      0.00    -0.13       0.00    -0.11
 32   4.2654      0.00    -0.04       0.00     0.03
 33   4.3146      0.00    -0.01       0.00     0.02
 34   4.7945      0.00    -0.16       0.00     0.08
 35   4.8902      0.00    -0.28       0.00    -0.04
 36   4.9175      0.00     0.07       0.00     0.04
 37   4.9175      0.00    -0.08       0.00     0.10
 38   4.9175      0.00    -0.22       0.00     0.00
 39   4.9176      0.00     0.13       0.00     0.09
 40   4.9966      0.00     0.12       0.00    -0.09
 41   4.9966      0.00     0.05       0.00    -0.19
 42   4.9967      0.00    -0.04       0.00     0.08
 43   4.9967      0.00     0.01       0.00    -0.04
 44   4.9993      0.00     0.11       0.00    -0.18
 45   4.9994      0.00    -0.01       0.00     0.01
 46   4.9994      0.00    -0.07       0.00     0.02
 47   5.1687      0.00    -0.27       0.00    -0.22
 48   5.1768      0.00     0.14       0.00     0.08
 49   5.1768      0.00     0.04       0.00     0.17
 50   5.1768      0.00     0.06       0.00    -0.09
 51   5.1773      0.00    -0.22       0.00     0.07
 52   5.1774      0.00    -0.07       0.00    -0.19
 53   5.1774      0.00     0.23       0.00     0.10
 54   5.2482      0.00     0.16       0.00    -0.08
 55   5.2483      0.00    -0.02       0.00     0.00
 56   5.2483      0.00    -0.00       0.00    -0.05
 57   5.2484      0.00     0.00       0.00    -0.12
 58   5.3275      0.00     0.04       0.00    -0.21
 59   5.9960      0.00     0.14       0.00     0.06
 60   6.0456      0.00     0.01       0.00     0.03
 61   6.1330      0.00    -0.35       0.00     0.19
 62   6.2093      0.00     0.10       0.00     0.01
 63   6.8232      0.00     0.05       0.00    -0.03
 64   7.0531      0.00     0.06       0.00     0.19
 65   7.0531      0.00    -0.14       0.00     0.04
 66   7.0531      0.00     0.10       0.00     0.06
 67   7.0532      0.00     0.07       0.00     0.33
 68   7.0586      0.00     0.31       0.00    -0.05
 69   7.0586      0.00    -0.02       0.00     0.22
 70   7.0586      0.00     0.24       0.00     0.08
 71   7.0587      0.00     0.03       0.00    -0.06
 72   7.1077      0.00    -0.20       0.00    -0.28
 73   7.1077      0.00    -0.26       0.00    -0.00
 74   7.1077      0.00    -0.12       0.00    -0.21
 75   7.1078      0.00     0.25       0.00    -0.00
 76   7.1182      0.00     0.09       0.00     0.02
 77   7.1183      0.00    -0.06       0.00    -0.18
 78   7.1183      0.00    -0.09       0.00    -0.06
 79   7.1184      0.00     0.01       0.00     0.01
 80   7.1646      0.00     0.08       0.00     0.04
 81   7.1646      0.00    -0.14       0.00     0.09
 82   7.1647      0.00    -0.03       0.00     0.08
 83   7.1647      0.00     0.08       0.00    -0.11
 84   7.1673      0.00     0.05       0.00    -0.05
 85   7.1674      0.00    -0.11       0.00     0.09
 86   7.1674      0.00    -0.12       0.00    -0.07
 87   7.3207      0.00     0.16       0.00     0.13

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.

12UC178    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.674    42.674    42.674
ecceobj         0.173     0.173     0.173
incobj          2.451     2.451     2.451
qmin           34.368    34.369    34.368
qmax           51.001    51.004    50.999
amean          42.328    42.328    42.328
amin           41.825    41.825    41.821
amax           42.906    42.907    42.906
emean           0.163     0.162     0.167
emin            0.135     0.126     0.144
emax            0.189     0.189     0.189
imean           4.054     4.292     3.396
imin            2.391     2.391     2.391
imax            6.464     7.050     4.784
excite_mean     0.179     0.180     0.177
fracstop        1.000     1.000     1.000
cjmean          3.044     3.043     3.044

libcent 0       180.9     181.9     179.5
libamp  0       128.8     129.5     128.4
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       230.6     231.5     234.2
kozaiamp        107.6     110.6     111.6