Orbit Fit and Astrometric record for 14UL277

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: 14UL277   
# Created Sun Dec  5 02:12:47 2021
# Orbit generated from Bernstein formalism
# Fitting      7 observations of      7
# Arc:   3.21y
# First observation: 2014/10/21
#  Last observation: 2018/01/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000131   0.015081  -0.000005  -0.005328   0.019623   0.000000
# Chi-squared of fit:     2.49 DOF:      8 RMS:  0.11
# Min/Max residuals:    -0.17    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.194842E-05  1.508909E-02 -4.199538E-06 -5.330372E-03  1.943088E-02 -5.099507E-04
# Covariance matrix:
  1.0793E-12  1.5726E-13  9.5860E-15 -1.5154E-13  1.1447E-12  8.7487E-12
  1.5726E-13  2.5062E-12  1.8860E-13 -1.0127E-12  2.3405E-12  5.9138E-11
  9.5860E-15  1.8860E-13  6.5930E-13 -3.0206E-13  1.4272E-13  4.6951E-12
 -1.5154E-13 -1.0127E-12 -3.0206E-13  5.4244E-13 -9.7238E-13 -2.5046E-11
  1.1447E-12  2.3405E-12  1.4272E-13 -9.7238E-13  3.8831E-12  5.6576E-11
  8.7487E-12  5.9138E-11  4.6951E-12 -2.5046E-11  5.6576E-11  1.4627E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.252476   36.865932    0.162662   -0.158025   -0.971158  2456951.798108
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:          203.45621 +/-     1.106
Argument of Peri:        6.40860 +/-     1.102
Long of Asc Node:      192.68379 +/-     0.002
Inclination:            21.44690 +/-     0.001
Eccentricity:         0.10580245 +/-    0.0007
Semi-Major Axis:     47.72872093 +/-    0.0153
Time of Perihelion: 2509322.7790 +/-     369.3
Perihelion:          42.67890547 +/-    0.0373
Aphelion:            52.77853639 +/-    0.0386
Period (y)              329.7448 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.51986468 +/-    0.0041
Ecliptic Y           30.93597928 +/-    0.0031
Ecliptic Z           -8.27498988 +/-    0.0008
Ecliptic XDOT        -0.00143335 +/-    0.0000
Ecliptic YDOT         0.00158118 +/-    0.0000
Ecliptic ZDOT        -0.00072963 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.43481129 +/-    0.0037
Geocenter to KBO     51.46447908 +/-    0.0052
# Hcoef:  6.46

The following table shows the complete astrometric record for 14UL277. 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 (14UL277) followed by the observatory code and reference code for the source of the astrometry.

2014 10  21.29733  02 30 14.536  +05 02 59.33  23.2i 14UL277   W84  C~55Sg      
2014 12  16.12646  02 27 01.571  +04 47 19.14  23.8r 14UL277   W84  C~55Sg      
2015 12  04.10314  02 31 16.263  +04 48 28.95  23.3i 14UL277   W84  C~55Sg      
2017 11  01.17270  02 40 35.063  +04 55 54.50  22.9z 14UL277   W84  C~55Sg      
2017 11  15.14962  02 39 41.746  +04 51 14.59  23.9r 14UL277   W84  C~55Sg      
2017 11  16.18058  02 39 37.850  +04 50 56.17  24.3g 14UL277   W84  C~55Sg      
2018 01  05.06124  02 37 17.381  +04 43 39.61  23.6r 14UL277   W84  C~55Sg      

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     0.07       0.00    -0.03
     2   0.1529  -3033.25    -0.02      32.24     0.04
     3   1.1192    596.29    -0.08   -1119.38    -0.02
     4   3.0305   8663.40    -0.05   -3350.17    -0.03
     5   3.0687   7817.49     0.15   -3363.74    -0.05
     6   3.0715   7756.33    -0.12   -3362.78     0.26
     7   3.2081   5623.84     0.05   -3111.48    -0.17

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.

14UL277    quality flag:3

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

axisobj        48.055    48.098    48.013
ecceobj         0.098     0.099     0.097
incobj         21.340    21.339    21.342
qmin           38.199    38.444    38.052
qmax           57.739    57.689    58.215
amean          47.798    47.798    47.797
amin           47.374    47.398    47.329
amax           48.296    48.279    48.361
emean           0.137     0.142     0.139
emin            0.077     0.084     0.075
emax            0.196     0.196     0.205
imean          20.896    20.827    20.717
imin           19.767    19.795    19.484
imax           21.848    21.828    21.948
excite_mean     0.383     0.384     0.382
fracstop        1.000     1.000     1.000
cjmean          2.960     2.960     2.962

libcent 0       273.4     275.7     268.1
libamp  0        32.8      23.7      48.4
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       193.5     185.4     194.7
kozaiamp        180.0     180.0     179.9