Orbit Fit and Astrometric record for 14UA225

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: 14UA225   
# Created Mon Apr 22 01:09:49 2019
# Orbit generated from Bernstein formalism
# Fitting   41 observations of   41
# Arc:   3.32y
# First observation: 2014/08/27
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000091   0.034760   0.000003   0.001986   0.028032   0.000000
# Chi-squared of fit:    12.59 DOF:   76 RMS:  0.10
# Min/Max residuals:    -0.26    0.32
# Exact a, adot, b, bdot, g, gdot:
  2.042951E-05  3.483445E-02  2.082884E-06  1.996656E-03  2.787196E-02  1.375441E-03
# Covariance matrix:
  1.4441E-13 -6.6005E-14  8.2909E-16 -1.9221E-15  5.5793E-14 -3.4775E-13
 -6.6005E-14  2.3109E-13 -5.1192E-15  1.3705E-14  1.1531E-13  2.3321E-12
  8.2909E-16 -5.1192E-15  9.8647E-14 -4.6450E-14 -2.5167E-15 -6.1383E-14
 -1.9221E-15  1.3705E-14 -4.6450E-14  3.5006E-14  7.1947E-15  1.6357E-13
  5.5793E-14  1.1531E-13 -2.5167E-15  7.1947E-15  1.7114E-13  1.1925E-12
 -3.4775E-13  2.3321E-12 -6.1383E-14  1.6357E-13  1.1925E-12  2.7887E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.405108    8.043684    0.567755    0.020674   -0.838799  2456897.027816
# Heliocentric elements and errors
Epoch:              2456890.5000  =  2014/08/21
Mean Anomaly:            1.34916 +/-     0.009
Argument of Peri:       18.44688 +/-     0.028
Long of Asc Node:      344.64992 +/-     0.002
Inclination:             3.58228 +/-     0.000
Eccentricity:         0.45712041 +/-    0.0001
Semi-Major Axis:     67.58388556 +/-    0.0075
Time of Perihelion: 2456129.9542 +/-       5.1
Perihelion:          36.68991239 +/-    0.0057
Aphelion:            98.47785873 +/-    0.0117
Period (y)              555.6137 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.42254174 +/-    0.0005
Ecliptic Y            4.57630852 +/-    0.0001
Ecliptic Z            0.87988312 +/-    0.0000
Ecliptic XDOT        -0.00035466 +/-    0.0000
Ecliptic YDOT         0.00340197 +/-    0.0000
Ecliptic ZDOT         0.00019950 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.71945453 +/-    0.0005
Geocenter to KBO     35.87835194 +/-    0.0005
# Hcoef:  6.96

The following table shows the complete astrometric record for 14UA225. 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 (14UA225) followed by the observatory code and reference code for the source of the astrometry.

2014 08  27.527038 00 27 19.598  +04 28 54.25  21.6R 14UA225   F51  C~1x8m      
2014 08  27.540656 00 27 19.550  +04 28 53.96  21.4R 14UA225   F51  C~1x8m      
2014 08  27.554255 00 27 19.507  +04 28 53.72  21.5R 14UA225   F51  C~1x8m      
2014 08  27.567869 00 27 19.440  +04 28 53.37  21.4R 14UA225   F51  C~1x8m      
2014 10  21.211910 00 23 05.96   +04 03 03.5   23.7g 14UA225   W84  C~1x8m      
2014 10  23.205683 00 22 57.10   +04 02 06.6   22.4i 14UA225   W84  C~1x8m      
2014 10  28.172708 00 22 35.82   +03 59 49.5   22.7r 14UA225   W84  C~1x8m      
2014 10  29.175139 00 22 31.68   +03 59 22.9   23.5g 14UA225   W84  C~1x8m      
2014 10  29.179294 00 22 31.66   +03 59 22.7   22.5r 14UA225   W84  C~1x8m      
2014 11  13.085312 00 21 37.34   +03 53 26.3   22.1z 14UA225   W84  C~1x8m      
2014 11  14.096655 00 21 34.22   +03 53 05.5   22.0z 14UA225   W84  C~1x8m      
2014 11  15.096597 00 21 31.19   +03 52 45.3   22.1z 14UA225   W84  C~1x8m      
2015 06  23.59337  00 35 39.906  +05 25 52.54  22.6r 14UA225   568  C~2lUW      
2015 07  19.51085  00 35 58.677  +05 29 31.13  22.5r 14UA225   568  C~2lUW      
2015 09  08.40498  00 33 41.908  +05 17 41.34  22.5r 14UA225   568  C~2lUW      
2015 09  08.50910  00 33 41.441  +05 17 38.68  22.5r 14UA225   568  C~2lUW      
2015 09  08.55273  00 33 41.245  +05 17 37.58  22.5r 14UA225   568  C~2lUW      
2015 09  09.52832  00 33 36.943  +05 17 12.23  22.8w 14UA225   568  C~2lUW      
2015 09  10.46917  00 33 32.758  +05 16 47.60  22.7w 14UA225   568  C~2lUW      
2015 10  03.38583  00 31 43.375  +05 05 46.82  22.6w 14UA225   568  C~2lUW      
2015 11  07.24974  00 29 06.706  +04 49 12.17  22.7w 14UA225   568  C~2lUW      
2015 11  07.30254  00 29 06.503  +04 49 10.91  22.7w 14UA225   568  C~2lUW      
2015 11  10.38589  00 28 55.396  +04 47 57.95  22.7w 14UA225   568  C~2lUW      
2015 12  07.32615  00 27 50.900  +04 40 34.29  22.8w 14UA225   568  C~2lUW      
2016 01  01.25516  00 27 53.663  +04 40 12.42  22.8w 14UA225   568  C~2lUW      
2016 09  26.43536  00 39 25.426  +06 02 07.82  22.6w 14UA225   568  C~2lUW      
2016 10  26.40787  00 37 01.778  +05 47 16.24  22.4r 14UA225   568  C~2lUW      
2016 10  26.44715  00 37 01.581  +05 47 15.11  24.9u 14UA225   568  C~2lUW      
2016 10  26.47363  00 37 01.487  +05 47 14.33  22.2r 14UA225   568  C~2lUW      
2016 11  03.42622  00 36 27.859  +05 43 38.07  22.7w 14UA225   568  C~2lUW      
2016 11  03.49128  00 36 27.589  +05 43 36.33  22.7w 14UA225   568  C~2lUW      
2016 11  04.27124  00 36 24.502  +05 43 16.15  22.7w 14UA225   568  C~2lUW      
2016 11  04.33051  00 36 24.261  +05 43 14.69  22.2w 14UA225   568  C~2lUW      
2016 12  29.24332  00 34 50.414  +05 31 59.65  22.8w 14UA225   568  C~2lUW      
2016 12  29.26796  00 34 50.436  +05 31 59.76  22.8w 14UA225   568  C~2lUW      
2017 01  30.22844  00 36 13.223  +05 39 53.19  22.6w 14UA225   568  C~2lUW      
2017 09  15.43089  00 47 30.068  +07 00 01.46  22.6w 14UA225   568  C~2lUW      
2017 09  16.51398  00 47 25.110  +06 59 32.77  22.7w 14UA225   568  C~2lUW      
2017 09  22.46739  00 46 57.221  +06 56 49.45  22.6w 14UA225   568  C~2lUW      
2017 09  22.49605  00 46 57.080  +06 56 48.66  22.5w 14UA225   568  C~2lUW      
2017 12  23.28322  00 41 47.680  +06 23 32.24  22.8w 14UA225   568  C~2lUW      

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    -0.14       0.00    -0.20
  2   0.0000     -0.77    -0.05       0.02    -0.22
  3   0.0001     -1.46     0.13       0.05    -0.23
  4   0.0001     -2.52    -0.06       0.13    -0.19
  5   0.1497  -4098.52     0.11      77.18     0.32
  6   0.1552  -4242.84     0.01      77.49     0.16
  7   0.1688  -4589.68    -0.04      77.85     0.07
  8   0.1715  -4657.13     0.10      77.99     0.23
  9   0.1715  -4657.49     0.03      77.93     0.16
 10   0.2123  -5545.59    -0.05      73.16     0.12
 11   0.2151  -5596.74     0.06      72.59     0.14
 12   0.2178  -5646.42    -0.21      72.04     0.19
 13   0.8215   8222.79     0.02     199.08    -0.12
 14   0.8925   8566.91    -0.02     290.34    -0.11
 15   1.0318   6406.91     0.04     439.15    -0.02
 16   1.0321   6399.44     0.03     439.45    -0.01
 17   1.0322   6396.31     0.04     439.59     0.02
 18   1.0349   6327.20     0.00     441.52    -0.08
 19   1.0375   6259.98    -0.01     443.43    -0.06
 20   1.1002   4496.55    -0.03     478.48    -0.09
 21   1.1957   1952.14     0.07     486.83    -0.11
 22   1.1958   1948.85     0.04     486.87    -0.08
 23   1.2043   1767.50     0.04     485.32    -0.01
 24   1.2780    706.49     0.00     458.25    -0.02
 25   1.3463    735.80     0.04     421.85    -0.07
 26   2.0833  12181.38    -0.04     884.48     0.03
 27   2.1653   9853.47     0.02     901.92     0.04
 28   2.1654   9850.32    -0.26     902.03     0.14
 29   2.1655   9848.72     0.07     901.86    -0.04
 30   2.1873   9301.05     0.01     899.41    -0.03
 31   2.1874   9296.66    -0.07     899.38    -0.04
 32   2.1896   9246.26     0.03     898.87    -0.07
 33   2.1897   9242.37     0.05     898.93    -0.00
 34   2.3401   7686.30    -0.02     827.12    -0.02
 35   2.3402   7686.65    -0.02     827.09    -0.01
 36   2.4277   9011.36     0.02     777.97     0.07
 37   3.0524  20236.86     0.02    1279.28     0.01
 38   3.0554  20156.93     0.00    1281.38     0.03
 39   3.0717  19706.67     0.02    1291.45    -0.00
 40   3.0718  19704.41     0.01    1291.53     0.02
 41   3.3231  14646.14     0.01    1240.80     0.07

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.

14UA225    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        68.676    68.702    68.650
ecceobj         0.466     0.466     0.466
incobj          3.571     3.571     3.571
qmin           35.934    35.896    35.893
qmax          101.457   101.455   101.228
amean          67.761    67.604    67.626
amin           66.661    66.043    66.642
amax           69.060    69.009    68.983
emean           0.458     0.457     0.457
emin            0.447     0.443     0.447
emax            0.470     0.470     0.469
imean           4.363     4.358     4.383
imin            3.917     3.930     3.938
imax            4.885     4.892     4.900
excite_mean     0.465     0.464     0.464
fracstop        1.000     1.000     1.000
cjmean          3.103     3.102     3.103

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       176.0     181.7     177.0
kozaiamp        180.0     180.0     180.0