Orbit Fit and Astrometric record for 14UW277

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: 14UW277   
# Created Wed Dec  8 02:12:55 2021
# Orbit generated from Bernstein formalism
# Fitting      7 observations of      7
# Arc:   3.97y
# First observation: 2014/10/29
#  Last observation: 2018/10/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000070   0.026343   0.000014  -0.007831   0.031063   0.000000
# Chi-squared of fit:     2.25 DOF:      8 RMS:  0.10
# Min/Max residuals:    -0.12    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.404454E-05  2.748773E-02 -3.730706E-06 -8.099336E-03  3.177060E-02  1.186547E-02
# Covariance matrix:
  1.1505E-12  4.6781E-13 -1.4299E-13 -2.1465E-13  1.3972E-12  7.8819E-12
  4.6781E-13  1.2927E-12 -1.3648E-13 -3.7302E-13  1.6069E-12  1.4171E-11
 -1.4299E-13 -1.3648E-13  5.4743E-13 -9.8362E-14 -3.1380E-13 -1.7560E-12
 -2.1465E-13 -3.7302E-13 -9.8362E-14  1.8911E-13 -5.3987E-13 -4.3949E-12
  1.3972E-12  1.6069E-12 -3.1380E-13 -5.3987E-13  3.1781E-12  2.0018E-11
  7.8819E-12  1.4171E-11 -1.7560E-12 -4.3949E-12  2.0018E-11  1.6633E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -32.942077   38.582209    0.053613   -0.540014   -0.833739  2456959.849178
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:          100.14173 +/-     0.040
Argument of Peri:      104.32260 +/-     0.026
Long of Asc Node:      158.34617 +/-     0.001
Inclination:            35.76119 +/-     0.000
Eccentricity:         0.42737067 +/-    0.0002
Semi-Major Axis:     26.46092183 +/-    0.0036
Time of Perihelion: 2443120.6175 +/-       4.7
Perihelion:          15.15229994 +/-    0.0058
Aphelion:            37.76954373 +/-    0.0075
Period (y)              136.1180 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.45603844 +/-    0.0012
Ecliptic Y           17.05243613 +/-    0.0009
Ecliptic Z          -17.11632546 +/-    0.0010
Ecliptic XDOT        -0.00110756 +/-    0.0000
Ecliptic YDOT         0.00214532 +/-    0.0000
Ecliptic ZDOT        -0.00114167 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.31278015 +/-    0.0010
Geocenter to KBO     31.47564426 +/-    0.0018
# Hcoef:  8.76

The following table shows the complete astrometric record for 14UW277. 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 (14UW277) followed by the observatory code and reference code for the source of the astrometry.

2014 10  29.34840  03 06 51.217  -16 54 06.89  23.8r 14UW277   W84  C~55Sh      
2014 12  16.21556  03 01 58.996  -17 03 02.64  24.6r 14UW277   W84  C~55Sh      
2014 12  23.11426  03 01 26.561  -17 00 36.08  23.6i 14UW277   W84  C~55Sh      
2017 11  19.23633  03 24 29.020  -16 48 31.69  23.5r 14UW277   W84  C~55Sh      
2018 02  07.06502  03 19 27.969  -16 13 16.00  24.5r 14UW277   W84  C~55Sh      
2018 09  22.38379  03 35 52.210  -15 59 38.29  23.5i 14UW277   W84  C~55Sh      
2018 10  18.33012  03 34 02.674  -16 23 56.20  23.8r 14UW277   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    -0.08       0.00    -0.06
     2   0.1311  -4142.06     0.13     843.07     0.04
     3   0.1499  -4536.46    -0.07    1130.37    -0.01
     4   3.0579  14443.38     0.19   -4787.91     0.20
     5   3.2764  11086.92    -0.12   -1306.92    -0.01
     6   3.8988  24775.71    -0.01   -5523.35    -0.12
     7   3.9698  22754.66    -0.04   -6322.72    -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.

14UW277    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        26.605    26.614    26.596
ecceobj         0.427     0.427     0.427
incobj         35.684    35.684    35.684
qmin           14.414    14.456    14.864
qmax           39.247    38.371    39.155
amean          26.676    26.259    26.721
amin           26.373    25.809    26.267
amax           26.983    26.806    27.502
emean           0.444     0.432     0.427
emin            0.426     0.423     0.409
emax            0.461     0.445     0.444
imean          34.974    34.679    34.702
imin           34.480    34.446    34.467
imax           35.844    34.808    35.075
excite_mean     0.725     0.714     0.712
fracstop        0.016     0.005     0.019
cjmean          2.518     2.541     2.534

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       115.2     105.2     115.6
kozaiamp         10.8       2.5       9.9