Orbit Fit and Astrometric record for 13TT227

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: 13TT227   
# Created Mon Dec  6 02:12:06 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   3.15y
# First observation: 2013/10/04
#  Last observation: 2016/11/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000237   0.028500  -0.000009   0.002950   0.027404   0.000000
# Chi-squared of fit:     5.18 DOF:     16 RMS:  0.12
# Min/Max residuals:    -0.23    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.655535E-05  2.852302E-02  1.522233E-06  2.945716E-03  2.688496E-02 -1.417839E-03
# Covariance matrix:
  6.8513E-13 -4.3482E-13  1.0472E-14 -2.2537E-14  2.4087E-13 -2.3424E-12
 -4.3482E-13  1.4379E-12 -7.3353E-14  1.5186E-13  1.2136E-12  1.5632E-11
  1.0472E-14 -7.3353E-14  4.4824E-13 -2.0167E-13 -7.4583E-14 -8.7818E-13
 -2.2537E-14  1.5186E-13 -2.0167E-13  1.3787E-13  1.5239E-13  1.8158E-12
  2.4087E-13  1.2136E-12 -7.4583E-14  1.5239E-13  2.2097E-12  1.5634E-11
 -2.3424E-12  1.5632E-11 -8.7818E-13  1.8158E-12  1.5634E-11  1.8686E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.391152    7.151311   -0.062808   -0.006711   -0.998364  2456569.653808
# Heliocentric elements and errors
Epoch:              2456560.5000  =  2013/09/25
Mean Anomaly:          337.13969 +/-     0.171
Argument of Peri:       24.96891 +/-     0.222
Long of Asc Node:       10.93073 +/-     0.000
Inclination:             5.91229 +/-     0.001
Eccentricity:         0.11438447 +/-    0.0003
Semi-Major Axis:     42.58415963 +/-    0.0101
Time of Perihelion: 2463005.9034 +/-      48.1
Perihelion:          37.71319300 +/-    0.0163
Aphelion:            47.45512626 +/-    0.0177
Period (y)              277.8947 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.88759539 +/-    0.0020
Ecliptic Y            4.82002612 +/-    0.0003
Ecliptic Z           -0.25389502 +/-    0.0000
Ecliptic XDOT        -0.00050900 +/-    0.0000
Ecliptic YDOT         0.00286298 +/-    0.0000
Ecliptic ZDOT         0.00030110 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.19380838 +/-    0.0020
Geocenter to KBO     37.19552065 +/-    0.0021
# Hcoef:  7.90

The following table shows the complete astrometric record for 13TT227. 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 (13TT227) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.15303  00 26 53.111  +02 28 44.70  24.0g 13TT227   W84  C~52Re      
2013 11  22.07536  00 23 36.538  +02 09 20.53  24.1r 13TT227   W84  C~52Re      
2014 10  21.21921  00 31 17.662  +03 08 41.67  24.2r 13TT227   W84  C~52Re      
2014 10  28.18239  00 30 46.653  +03 05 36.34  24.0g 13TT227   W84  C~52Re      
2014 10  29.12351  00 30 42.631  +03 05 12.17  22.7z 13TT227   W84  C~52Re      
2014 11  15.10387  00 29 38.643  +02 58 55.29  22.8z 13TT227   W84  C~52Re      
2015 11  07.08553  00 35 51.620  +03 49 32.27  24.5r 13TT227   W84  C~52Re      
2015 11  07.08690  00 35 51.645  +03 49 32.05  23.3i 13TT227   W84  C~52Re      
2016 09  09.28605  00 46 08.574  +05 04 14.72  23.3i 13TT227   W84  C~52Re      
2016 09  09.28743  00 46 08.575  +05 04 14.71  24.2r 13TT227   W84  C~52Re      
2016 11  26.10593  00 40 31.545  +04 30 53.88  23.4r 13TT227   W84  C~52Re      

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     0.04
     2   0.1339  -3166.66    -0.03      95.36    -0.19
     3   1.0460   4588.48     0.24     638.41     0.09
     4   1.0651   4088.36    -0.07     651.18     0.19
     5   1.0677   4023.45    -0.15     652.72     0.03
     6   1.1142   2993.72     0.00     684.41    -0.05
     7   2.0915   9329.43    -0.21    1277.28     0.13
     8   2.0915   9329.69     0.13    1276.94    -0.23
     9   2.9326  19627.14    -0.07    1792.91     0.04
    10   2.9326  19627.15     0.03    1792.89     0.02
    11   3.1457  14171.25     0.09    1918.70    -0.06

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.

13TT227    quality flag:2

Type:       SCATNEAR CLASSICAL CLASSICAL

axisobj        42.831    42.858    42.804
ecceobj         0.118     0.119     0.118
incobj          5.896     5.895     5.896
qmin           35.396    34.919    35.820
qmax           50.180    50.707    49.716
amean          42.570    42.596    42.544
amin           42.124    42.194    42.155
amax           42.992    43.023    42.965
emean           0.115     0.127     0.102
emin            0.047     0.064     0.042
emax            0.168     0.179     0.157
imean           3.530     4.453     3.704
imin            0.117     1.641     0.962
imax            6.602     6.585     6.614
excite_mean     0.133     0.150     0.122
fracstop        1.000     1.000     1.000
cjmean          3.061     3.056     3.064

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       172.8     174.7     187.3
kozaiamp        180.0     180.0     180.0