Orbit Fit and Astrometric record for 14RQ86

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: 14RQ86    
# Created Fri Dec  3 02:12:36 2021
# Orbit generated from Bernstein formalism
# Fitting      9 observations of      9
# Arc:   3.11y
# First observation: 2014/09/04
#  Last observation: 2017/10/13
Preliminary a, adot, b, bdot, g, gdot:
   0.000221   0.024901  -0.000089  -0.007257   0.027190   0.000000
# Chi-squared of fit:     6.39 DOF:     12 RMS:  0.15
# Min/Max residuals:    -0.43    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.615241E-05  2.499786E-02 -4.074544E-06 -7.247460E-03  2.605656E-02 -4.163648E-04
# Covariance matrix:
  6.5945E-13 -7.2841E-13 -6.5047E-14  1.2664E-13  9.1523E-13 -8.5383E-12
 -7.2841E-13  3.0315E-12  1.4695E-13 -7.3117E-13 -1.2701E-12  4.2997E-11
 -6.5047E-14  1.4695E-13  4.9911E-13 -2.0101E-13 -3.7997E-13  2.3239E-12
  1.2664E-13 -7.3117E-13 -2.0101E-13  2.7724E-13  2.1142E-13 -1.0643E-11
  9.1523E-13 -1.2701E-12 -3.7997E-13  2.1142E-13  6.2931E-12 -2.1734E-11
 -8.5383E-12  4.2997E-11  2.3239E-12 -1.0643E-11 -2.1734E-11  6.3096E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.835930  -55.286701   -0.601967   -0.379307   -0.718598  2456904.582048
# Heliocentric elements and errors
Epoch:              2456900.5000  =  2014/08/31
Mean Anomaly:          193.07914 +/-     3.067
Argument of Peri:       49.59298 +/-     3.068
Long of Asc Node:       67.27545 +/-     0.002
Inclination:            31.18384 +/-     0.000
Eccentricity:         0.01650533 +/-    0.0005
Semi-Major Axis:     38.48167114 +/-    0.0159
Time of Perihelion: 2497328.9814 +/-     742.3
Perihelion:          37.84651862 +/-    0.0243
Aphelion:            39.11682365 +/-    0.0246
Period (y)              238.7202 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.28196378 +/-    0.0019
Ecliptic Y          -28.22011626 +/-    0.0027
Ecliptic Z          -17.92043219 +/-    0.0017
Ecliptic XDOT         0.00192979 +/-    0.0000
Ecliptic YDOT         0.00181545 +/-    0.0000
Ecliptic ZDOT        -0.00065285 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.10082999 +/-    0.0023
Geocenter to KBO     38.37804435 +/-    0.0037
# Hcoef:  7.89

The following table shows the complete astrometric record for 14RQ86. 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 (14RQ86) followed by the observatory code and reference code for the source of the astrometry.

2014 09  04.08127  21 05 12.751  -45 51 10.05  23.5i 14RQ86    W84  C~52Tw      
2014 09  24.06447  21 03 29.539  -45 47 46.25  24.1r 14RQ86    W84  C~52Tw      
2014 09  27.04400  21 03 17.545  -45 46 47.20  23.9r 14RQ86    W84  C~52Tw      
2016 09  03.23568  21 22 16.334  -45 37 40.04  23.7i 14RQ86    W84  C~52Tw      
2016 09  03.23705  21 22 16.336  -45 37 40.16  23.9r 14RQ86    W84  C~52Tw      
2017 09  12.09599  21 29 52.060  -45 27 21.74  23.7g 14RQ86    W84  C~52Tw      
2017 09  23.06717  21 28 53.469  -45 25 44.60  24.4r 14RQ86    W84  C~52Tw      
2017 10  13.07937  21 27 37.697  -45 18 18.69  23.9r 14RQ86    W84  C~52Tw      
2017 10  13.08347  21 27 37.689  -45 18 18.75  23.2z 14RQ86    W84  C~52Tw      

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    -0.20       0.00    -0.07
     2   0.0547   -955.40    -0.03     541.03    -0.03
     3   0.0629  -1055.38     0.22     637.11     0.09
     4   1.9991  10328.27     0.00   -2997.91     0.10
     5   1.9991  10328.25     0.06   -2998.03    -0.05
     6   3.0226  15002.56    -0.14   -4281.52    -0.43
     7   3.0527  14471.61     0.04   -3947.02     0.19
     8   3.1075  13908.88     0.05   -3221.33     0.19
     9   3.1075  13908.78     0.00   -3221.35     0.01

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.

14RQ86    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.602    38.652    38.552
ecceobj         0.014     0.012     0.015
incobj         31.231    31.232    31.231
qmin           37.480    37.677    37.535
qmax           40.013    39.836    39.799
amean          38.653    38.713    38.617
amin           38.376    38.440    38.334
amax           38.937    38.989    38.902
emean           0.012     0.013     0.016
emin            0.000     0.003     0.006
emax            0.028     0.022     0.024
imean          29.686    29.695    29.690
imin           29.291    29.296    29.288
imax           30.140    30.149    30.154
excite_mean     0.495     0.496     0.496
fracstop        1.000     1.000     1.000
cjmean          2.749     2.749     2.748

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       170.7     180.4     181.5
kozaiamp        180.0     180.0     180.0