Orbit Fit and Astrometric record for 14UR277

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: 14UR277   
# Created Sat Nov 27 02:12:57 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     14
# Arc:   3.98y
# First observation: 2014/10/28
#  Last observation: 2018/10/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000230   0.027551   0.000011  -0.003710   0.027362   0.000000
# Chi-squared of fit:     5.50 DOF:     22 RMS:  0.11
# Min/Max residuals:    -0.22    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.645138E-05  2.784513E-02 -2.362362E-06 -3.686413E-03  2.679740E-02  3.300752E-03
# Covariance matrix:
  3.2573E-13 -1.6933E-13 -9.9635E-16  4.7481E-15  5.6314E-14 -9.1985E-13
 -1.6933E-13  7.0607E-13  2.8224E-14 -9.5708E-14  7.4468E-13  6.8412E-12
 -9.9635E-16  2.8224E-14  2.9015E-13 -1.0363E-13  4.1716E-14  2.8333E-13
  4.7481E-15 -9.5708E-14 -1.0363E-13  6.8984E-14 -1.3510E-13 -9.6929E-13
  5.6314E-14  7.4468E-13  4.1716E-14 -1.3510E-13  1.4844E-12  6.9604E-12
 -9.1985E-13  6.8412E-12  2.8333E-13 -9.6929E-13  6.9604E-12  7.2905E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -31.409734   41.515764    0.121519   -0.514558   -0.843019  2456958.854968
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:           48.93401 +/-     0.051
Argument of Peri:      195.29414 +/-     0.084
Long of Asc Node:      146.35281 +/-     0.001
Inclination:            31.52118 +/-     0.000
Eccentricity:         0.13345534 +/-    0.0003
Semi-Major Axis:     41.30489689 +/-    0.0059
Time of Perihelion: 2443770.6937 +/-      13.3
Perihelion:          35.79253797 +/-    0.0122
Aphelion:            46.81725580 +/-    0.0130
Period (y)              265.4670 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.66451571 +/-    0.0011
Ecliptic Y           21.67540521 +/-    0.0010
Ecliptic Z          -19.44808632 +/-    0.0009
Ecliptic XDOT        -0.00182156 +/-    0.0000
Ecliptic YDOT         0.00218602 +/-    0.0000
Ecliptic ZDOT        -0.00049709 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.16267270 +/-    0.0010
Geocenter to KBO     37.31705032 +/-    0.0017
# Hcoef:  7.69

The following table shows the complete astrometric record for 14UR277. 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 (14UR277) followed by the observatory code and reference code for the source of the astrometry.

2014 10  28.35419  03 14 37.729  -14 39 45.82  23.1i 14UR277   W84  C~55Sh      
2014 11  03.33265  03 14 07.017  -14 42 39.73  24.1g 14UR277   W84  C~55Sh      
2014 11  16.29925  03 12 58.539  -14 47 12.82  23.0z 14UR277   W84  C~55Sh      
2014 11  21.28381  03 12 32.238  -14 48 16.70  23.3g 14UR277   W84  C~55Sh      
2015 11  08.31136  03 20 13.381  -14 27 07.76  23.6r 14UR277   W84  C~55Sh      
2015 11  08.31409  03 20 13.364  -14 27 07.59  24.5g 14UR277   W84  C~55Sh      
2016 11  09.32174  03 26 31.397  -14 09 48.24  23.6i 14UR277   W84  C~55Sh      
2016 11  09.32312  03 26 31.401  -14 09 48.20  23.8r 14UR277   W84  C~55Sh      
2017 11  10.24924  03 32 51.385  -13 51 33.49  23.1i 14UR277   W84  C~55Sh      
2017 12  10.16044  03 30 16.868  -13 55 43.14  23.3r 14UR277   W84  C~55Sh      
2017 12  10.16181  03 30 16.842  -13 55 42.97  24.3g 14UR277   W84  C~55Sh      
2018 01  08.14234  03 28 24.540  -13 46 19.89  23.5i 14UR277   W84  C~55Sh      
2018 02  09.06767  03 27 47.048  -13 23 41.63  23.3r 14UR277   W84  C~55Sh      
2018 10  20.36047  03 40 54.560  -13 21 45.38  23.4i 14UR277   W84  C~55Sh      

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    -0.00       0.00     0.04
     2   0.0164   -477.52    -0.00     -28.40    -0.18
     3   0.0519  -1506.75     0.01      16.36    -0.14
     4   0.0655  -1889.47     0.04      72.22     0.26
     5   1.0293   4868.33    -0.07    -794.19    -0.11
     6   1.0293   4868.15    -0.03    -793.95     0.13
     7   2.0341  10417.00    -0.08   -1550.78     0.01
     8   2.0341  10417.07     0.10   -1550.76     0.02
     9   3.0360  16027.92     0.08   -2306.15    -0.02
    10   3.1179  13807.21     0.14   -1808.47    -0.17
    11   3.1179  13806.91    -0.07   -1808.19     0.08
    12   3.1972  12435.00    -0.22    -744.72     0.17
    13   3.2846  12353.73     0.14     719.82    -0.06
    14   3.9781  23334.82    -0.05   -2952.96    -0.03

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.

14UR277    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.644    41.663    41.625
ecceobj         0.140     0.141     0.140
incobj         31.483    31.483    31.483
qmin           34.275    34.317    34.015
qmax           48.669    48.638    48.827
amean          41.314    41.331    41.297
amin           40.954    40.992    40.945
amax           41.686    41.708    41.675
emean           0.147     0.146     0.149
emin            0.126     0.126     0.126
emax            0.168     0.167     0.173
imean          30.204    30.225    30.168
imin           29.662    29.706    29.585
imax           30.573    30.631    30.692
excite_mean     0.524     0.524     0.524
fracstop        1.000     1.000     1.000
cjmean          2.732     2.732     2.732

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       182.4     180.0     187.8
kozaiamp        180.0     180.0     180.0