Orbit Fit and Astrometric record for 14US277

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: 14US277   
# Created Fri Dec  3 02:12:51 2021
# Orbit generated from Bernstein formalism
# Fitting      7 observations of      7
# Arc:   3.28y
# First observation: 2014/10/28
#  Last observation: 2018/02/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000023   0.008738  -0.000005  -0.001186   0.012635   0.000000
# Chi-squared of fit:     2.67 DOF:      8 RMS:  0.11
# Min/Max residuals:    -0.20    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.073386E-05  8.725528E-03 -1.360188E-06 -1.179206E-03  1.260536E-02 -3.998987E-03
# Covariance matrix:
  6.2286E-13 -6.2648E-14 -3.7988E-15 -9.9385E-14  5.5155E-13  4.8849E-13
 -6.2648E-14  1.2534E-12 -1.2001E-13  7.2189E-14  1.0982E-12  6.4952E-11
 -3.7988E-15 -1.2001E-13  4.5873E-13 -1.9875E-13 -9.4174E-14 -7.4135E-12
 -9.9385E-14  7.2189E-14 -1.9875E-13  2.1967E-13 -2.0995E-13  8.5875E-12
  5.5155E-13  1.0982E-12 -9.4174E-14 -2.0995E-13  2.2169E-12  4.6860E-11
  4.8849E-13  6.4952E-11 -7.4135E-12  8.5875E-12  4.6860E-11  4.0761E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -36.101560   40.582723    0.105298   -0.582884   -0.799606  2456958.862008
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:          319.13139 +/-     0.565
Argument of Peri:      350.96748 +/-     0.033
Long of Asc Node:      143.50778 +/-     0.005
Inclination:            36.39458 +/-     0.001
Eccentricity:         0.45439493 +/-    0.0072
Semi-Major Axis:     99.77550957 +/-    0.8208
Time of Perihelion: 2498276.3401 +/-     256.7
Perihelion:          54.43802404 +/-    0.8460
Aphelion:           145.11299509 +/-    1.3929
Period (y)              996.6534 +/-     12.30
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           49.49689857 +/-    0.0058
Ecliptic Y           42.26394624 +/-    0.0049
Ecliptic Z          -46.74361685 +/-    0.0055
Ecliptic XDOT        -0.00188490 +/-    0.0000
Ecliptic YDOT         0.00087977 +/-    0.0000
Ecliptic ZDOT         0.00030494 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   80.13207745 +/-    0.0055
Geocenter to KBO     79.33132440 +/-    0.0094
# Hcoef:  4.54

The following table shows the complete astrometric record for 14US277. 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 (14US277) followed by the observatory code and reference code for the source of the astrometry.

2014 10  28.36123  03 17 42.578  -19 21 38.99  23.2i 14US277   W84  C~55Sh      
2014 11  21.29518  03 16 37.800  -19 25 45.27  23.8r 14US277   W84  C~55Sh      
2014 12  22.17438  03 15 21.848  -19 24 05.81  23.6r 14US277   W84  C~55Sh      
2015 11  15.31156  03 19 01.059  -19 19 23.89  23.7r 14US277   W84  C~55Sh      
2016 11  22.22813  03 20 46.858  -19 14 19.38  22.9i 14US277   W84  C~55Sh      
2017 02  16.04332  03 18 45.302  -18 52 22.99  23.3i 14US277   W84  C~55Sh      
2018 02  09.07506  03 20 47.976  -18 49 52.70  23.3i 14US277   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     0.04       0.00    -0.02
     2   0.0655   -947.19    -0.20      59.43     0.18
     3   0.1501  -1934.39     0.11     495.28    -0.17
     4   1.0485   1095.34     0.01    -228.73     0.10
     5   2.0695   2611.47     0.12    -424.72    -0.11
     6   2.3044   1405.52    -0.01    1377.88    -0.06
     7   3.2846   3102.35    -0.07     957.65     0.08

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.

14US277    quality flag:2

Type:       6:1EEEEE  SCATNEAR  SCATNEAR

axisobj       100.624   103.182    98.299
ecceobj         0.453     0.474     0.432
incobj         36.355    36.354    36.356
qmin           53.665    52.239    53.845
qmax          147.276   154.296   142.932
amean          99.417   101.928    97.174
amin           98.181   100.432    95.903
amax          101.036   103.836    98.905
emean           0.420     0.473     0.431
emin            0.386     0.463     0.422
emax            0.460     0.486     0.445
imean          36.401    35.050    35.052
imin           34.859    34.666    34.703
imax           37.651    35.410    35.381
excite_mean     0.727     0.744     0.718
fracstop        1.000     1.000     1.000
cjmean          2.957     2.950     2.964

libcent 0       160.2    -180.0    -180.0
libamp  0       125.6    -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       160.2      74.8      72.9
kozaiamp        180.0     180.0     180.0