Orbit Fit and Astrometric record for 14UW229

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: 14UW229   
# Created Tue Dec  7 02:12:55 2021
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   2.26y
# First observation: 2013/09/01
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000046   0.014876  -0.000001   0.003671   0.018994   0.000000
# Chi-squared of fit:    14.66 DOF:     54 RMS:  0.12
# Min/Max residuals:    -0.41    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.147717E-05  1.478309E-02  4.238135E-06  3.651770E-03  1.897322E-02 -1.671369E-03
# Covariance matrix:
  4.0220E-13  1.8325E-14 -1.4723E-14  4.6941E-14  3.7275E-13  5.9534E-12
  1.8325E-14  2.1181E-13 -1.6998E-14  6.5876E-14  1.7992E-13  8.6603E-12
 -1.4723E-14 -1.6998E-14  1.1334E-13 -8.5872E-14 -2.7062E-14 -1.2429E-12
  4.6941E-14  6.5876E-14 -8.5872E-14  1.3079E-13  9.4147E-14  4.8638E-12
  3.7275E-13  1.7992E-13 -2.7062E-14  9.4147E-14  5.1648E-13  1.2146E-11
  5.9534E-12  8.6603E-12 -1.2429E-12  4.8638E-12  1.2146E-11  6.4044E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.433054   24.847600    0.725704    0.054381   -0.700749  2456537.034238
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:          234.01476 +/-     0.393
Argument of Peri:      157.44028 +/-     0.370
Long of Asc Node:        7.00718 +/-     0.001
Inclination:            14.61262 +/-     0.001
Eccentricity:         0.16998654 +/-    0.0009
Semi-Major Axis:     47.85611269 +/-    0.0168
Time of Perihelion: 2498848.1686 +/-     130.3
Perihelion:          39.72121769 +/-    0.0475
Aphelion:            55.99100769 +/-    0.0495
Period (y)              331.0658 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.62595636 +/-    0.0018
Ecliptic Y           21.72090844 +/-    0.0008
Ecliptic Z            4.07410239 +/-    0.0002
Ecliptic XDOT        -0.00115774 +/-    0.0000
Ecliptic YDOT         0.00181649 +/-    0.0000
Ecliptic ZDOT         0.00050687 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.41235630 +/-    0.0017
Geocenter to KBO     52.70586063 +/-    0.0020
# Hcoef:  6.90

The following table shows the complete astrometric record for 14UW229. 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 (14UW229) followed by the observatory code and reference code for the source of the astrometry.

2013 09  01.53346  01 25 23.858  +13 44 34.20  24.3r 14UW229   568  C~2SDl      
2013 09  01.57230  01 25 23.741  +13 44 33.60  21.9r 14UW229   568  C~2SDl      
2013 10  09.40859  01 23 16.799  +13 35 08.53  24.2r 14UW229   568  C~2SDl      
2013 10  30.38445  01 21 56.987  +13 28 00.65  23.9r 14UW229   568  C~2SDl      
2013 10  31.38098  01 21 53.326  +13 27 39.72  24.1r 14UW229   568  C~2SDl      
2013 11  01.32125  01 21 49.874  +13 27 20.17  24.0r 14UW229   568  C~2SDl      
2013 11  01.36050  01 21 49.728  +13 27 19.39  23.7r 14UW229   568  C~2SDl      
2013 11  01.36717  01 21 49.696  +13 27 19.36  24.1r 14UW229   568  C~2SDl      
2013 11  01.45478  01 21 49.383  +13 27 17.57  24.5r 14UW229   568  C~2SDl      
2013 11  05.42745  01 21 35.062  +13 25 55.10  23.9r 14UW229   568  C~2SDl      
2013 11  05.47445  01 21 34.865  +13 25 54.43  24.1r 14UW229   568  C~2SDl      
2013 11  05.47937  01 21 34.857  +13 25 54.20  24.6r 14UW229   568  C~2SDl      
2013 11  27.37664  01 20 25.965  +13 18 53.04  24.0r 14UW229   568  C~2SDl      
2013 12  04.35870  01 20 08.811  +13 16 58.35  24.4r 14UW229   568  C~2SDl      
2013 12  29.31207  01 19 32.873  +13 12 17.00  23.7r 14UW229   568  C~2SDl      
2014 09  23.46889  01 27 12.664  +14 10 40.09  24.0r 14UW229   568  C~2SDl      
2014 10  22.42878  01 25 23.704  +14 01 40.84  24.2r 14UW229   568  C~2SDl      
2014 10  22.46820  01 25 23.553  +14 01 39.89  23.9r 14UW229   568  C~2SDl      
2014 10  22.50765  01 25 23.405  +14 01 39.03  24.3r 14UW229   568  C~2SDl      
2014 10  25.43103  01 25 12.237  +14 00 38.58  24.8r 14UW229   568  C~2SDl      
2014 11  19.23833  01 23 44.793  +13 52 12.25  24.5r 14UW229   568  C~2SDl      
2014 11  19.37128  01 23 44.358  +13 52 09.68  24.4r 14UW229   568  C~2SDm      
2014 11  21.21867  01 23 38.713  +13 51 34.47  24.5r 14UW229   568  C~2SDm      
2014 11  21.38105  01 23 38.216  +13 51 31.28  24.3r 14UW229   568  C~2SDm      
2015 02  19.22673  01 23 30.831  +13 46 14.05  23.8r 14UW229   568  C~2SDm      
2015 02  19.24767  01 23 30.906  +13 46 14.58  23.9r 14UW229   568  C~2SDm      
2015 10  09.43173  01 29 12.012  +14 36 49.76  24.5w 14UW229   568  C~2SDm      
2015 10  09.47451  01 29 11.847  +14 36 48.94  24.3w 14UW229   568  C~2SDm      
2015 10  09.50371  01 29 11.734  +14 36 48.39  24.4w 14UW229   568  C~2SDm      
2015 12  07.42436  01 25 52.078  +14 17 40.58  24.5w 14UW229   568  C~2SDm      

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     0.17       0.00    -0.25
     2   0.0001     -1.81    -0.09       0.08    -0.41
     3   0.1037  -1929.41    -0.01     165.12    -0.09
     4   0.1611  -3169.12    -0.04     203.96     0.10
     5   0.1639  -3226.49     0.08     204.57    -0.12
     6   0.1664  -3280.52    -0.01     205.33    -0.04
     7   0.1665  -3282.79     0.00     205.41    -0.01
     8   0.1666  -3283.23    -0.05     205.56     0.13
     9   0.1668  -3288.14     0.14     205.61     0.09
    10   0.1777  -3512.81     0.09     207.53    -0.05
    11   0.1778  -3515.73    -0.17     207.99     0.38
    12   0.1778  -3515.92    -0.09     207.82     0.21
    13   0.2378  -4606.28     0.03     195.31     0.31
    14   0.2569  -4881.59     0.11     183.31    -0.09
    15   0.3252  -5474.04    -0.08     120.42    -0.01
    16   1.0594   2051.60    -0.08     867.19    -0.06
    17   1.1387    379.41    -0.09     953.97     0.16
    18   1.1388    377.02    -0.10     953.90     0.01
    19   1.1389    374.70    -0.04     953.91    -0.06
    20   1.1469    201.34     0.18     958.20    -0.06
    21   1.2148  -1168.70     0.12     962.50    -0.01
    22   1.2152  -1175.54    -0.07     962.48     0.04
    23   1.2202  -1264.95     0.01     960.49    -0.01
    24   1.2207  -1272.86     0.01     960.24    -0.16
    25   1.4666  -1491.09    -0.19     706.10    -0.07
    26   1.4667  -1489.88     0.07     706.18     0.07
    27   2.1024   4242.90    -0.02    1686.90     0.00
    28   2.1025   4240.37    -0.00    1687.01    -0.02
    29   2.1026   4238.64     0.01    1687.11    -0.02
    30   2.2639   1119.03     0.12    1691.87     0.05

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.

14UW229    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.067    48.114    48.021
ecceobj         0.164     0.167     0.162
incobj         14.557    14.556    14.557
qmin           37.354    37.306    37.349
qmax           58.630    58.865    58.844
amean          47.798    47.798    47.798
amin           47.348    47.330    47.326
amax           48.318    48.345    48.328
emean           0.182     0.182     0.181
emin            0.147     0.143     0.141
emax            0.214     0.218     0.218
imean          14.643    14.699    14.638
imin           13.811    13.841    13.783
imax           15.639    15.700    15.636
excite_mean     0.312     0.312     0.311
fracstop        1.000     1.000     1.000
cjmean          3.027     3.026     3.027

libcent 0       276.2     275.1     276.0
libamp  0        24.4      30.1      29.5
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       172.2     179.6     179.4
kozaiamp        180.0     180.0     180.0