Orbit Fit and Astrometric record for 16QV134

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: 16QV134   
# Created Mon Dec  6 02:13:50 2021
# Orbit generated from Bernstein formalism
# Fitting      7 observations of      7
# Arc:   2.85y
# First observation: 2015/11/07
#  Last observation: 2018/09/11
Preliminary a, adot, b, bdot, g, gdot:
  -0.000124   0.033381   0.000010  -0.000729   0.028406   0.000000
# Chi-squared of fit:     3.37 DOF:      8 RMS:  0.12
# Min/Max residuals:    -0.21    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.817035E-05  3.283432E-02  6.046393E-07 -7.214867E-04  2.897420E-02 -3.194604E-03
# Covariance matrix:
  1.3984E-12 -1.7912E-12 -9.7491E-15  2.2602E-14 -3.8899E-13 -1.2008E-11
 -1.7912E-12  4.1759E-12  3.4517E-14 -4.8266E-14 -4.0387E-13  2.9138E-11
 -9.7491E-15  3.4517E-14  6.1720E-13 -3.4771E-13 -1.0430E-14  2.4444E-13
  2.2602E-14 -4.8266E-14 -3.4771E-13  2.9655E-13 -5.2256E-15 -3.8460E-13
 -3.8899E-13 -4.0387E-13 -1.0430E-14 -5.2256E-15  1.2331E-12 -4.6025E-13
 -1.2008E-11  2.9138E-11  2.4444E-13 -3.8460E-13 -4.6025E-13  2.2438E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.078473   21.562273   -0.380522   -0.128918   -0.909783  2457333.630999
# Heliocentric elements and errors
Epoch:              2457330.5000  =  2015/11/04
Mean Anomaly:          336.53799 +/-     0.105
Argument of Peri:      295.47424 +/-     0.161
Long of Asc Node:      120.61886 +/-     0.007
Inclination:             7.95498 +/-     0.000
Eccentricity:         0.18167028 +/-    0.0002
Semi-Major Axis:     42.15888434 +/-    0.0097
Time of Perihelion: 2463846.7055 +/-      29.0
Perihelion:          34.49986784 +/-    0.0125
Aphelion:            49.81790083 +/-    0.0150
Period (y)              273.7423 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.49045820 +/-    0.0012
Ecliptic Y           13.24939452 +/-    0.0005
Ecliptic Z           -4.85018339 +/-    0.0002
Ecliptic XDOT        -0.00142852 +/-    0.0000
Ecliptic YDOT         0.00276544 +/-    0.0000
Ecliptic ZDOT        -0.00002504 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.42175331 +/-    0.0011
Geocenter to KBO     34.51346258 +/-    0.0013
# Hcoef:  8.63

The following table shows the complete astrometric record for 16QV134. 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 (16QV134) followed by the observatory code and reference code for the source of the astrometry.

2015 11  07.13021  01 31 45.912  +00 54 19.99  24.6r 16QV134   W84  C~55Zc      
2016 08  26.34197  01 44 16.505  +02 10 23.20  24.0r 16QV134   W84  C~55Zc      
2016 08  29.34948  01 44 08.444  +02 09 00.71  24.5g 16QV134   W84  C~55Zc      
2016 10  23.18999  01 40 02.908  +01 40 06.68  24.0r 16QV134   W84  C~55Zc      
2016 10  28.24666  01 39 36.347  +01 37 42.74  23.9r 16QV134   W84  C~55Zc      
2017 08  22.36577  01 51 29.158  +02 51 20.28  23.9i 16QV134   W84  C~55Zc      
2018 09  11.34733  01 57 40.408  +03 21 39.38  23.8r 16QV134   W84  C~55Zc      

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    -0.21
     2   0.8028  12158.27     0.15      83.12     0.17
     3   0.8110  12015.05    -0.00      50.93    -0.02
     4   0.9611   7944.36    -0.14    -202.93     0.02
     5   0.9750   7520.51     0.17    -189.62     0.14
     6   1.7912  19131.54    -0.19     -18.57    -0.02
     7   2.8452  25039.13     0.07    -367.74    -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.

16QV134    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.660    42.693    42.628
ecceobj         0.189     0.189     0.189
incobj          7.952     7.952     7.952
qmin           33.967    33.997    33.961
qmax           51.379    51.157    51.395
amean          42.328    42.328    42.328
amin           41.895    41.880    41.890
amax           42.823    42.819    42.826
emean           0.177     0.176     0.178
emin            0.160     0.156     0.160
emax            0.200     0.197     0.200
imean           6.731     6.769     6.737
imin            6.047     6.035     6.046
imax            7.731     7.911     7.784
excite_mean     0.213     0.212     0.213
fracstop        1.000     1.000     1.000
cjmean          3.029     3.029     3.029

libcent 0       180.2     178.9     179.2
libamp  0        77.5      83.0      77.8
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       163.0     166.9     160.8
kozaiamp        180.0     180.0     180.0