Orbit Fit and Astrometric record for 13VD24

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: 13VD24    
# Created Sun Oct 22 01:38:19 2017
# Orbit generated from Bernstein formalism
# Fitting    8 observations of    8
# Arc:  89.84d
# First observation: 2013/11/06
#  Last observation: 2014/02/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000015   0.018708   0.000027   0.000995   0.019939   0.000000
# Chi-squared of fit:     1.68 DOF:   10 RMS:  0.08
# Min/Max residuals:    -0.14    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.314167E-05  1.732659E-02  1.220881E-06  1.749393E-03  1.984777E-02  4.240799E-03
# Covariance matrix:
  7.1509E-13 -5.7482E-13 -3.6296E-14 -3.3635E-13  1.8281E-12  3.3902E-10
 -5.7482E-13  5.5361E-10  7.4472E-12 -2.6667E-10  5.9471E-11 -2.6806E-08
 -3.6296E-14  7.4472E-12  6.2095E-13 -7.0847E-12  3.2761E-13 -5.3504E-10
 -3.3635E-13 -2.6667E-10 -7.0847E-12  1.6890E-10 -2.3700E-11  1.5591E-08
  1.8281E-12  5.9471E-11  3.2761E-13 -2.3700E-11  1.8111E-11  3.4531E-10
  3.3902E-10 -2.6806E-08 -5.3504E-10  1.5591E-08  3.4531E-10  2.3802E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
  -18.431060   33.328856   -0.177338   -0.307842   -0.924181  2456602.726715
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:           62.14954 +/-     6.585
Argument of Peri:      196.95701 +/-     0.636
Long of Asc Node:      105.69964 +/-     0.095
Inclination:            18.93678 +/-     0.009
Eccentricity:         0.24527804 +/-    0.0883
Semi-Major Axis:     54.59988720 +/-    2.3727
Time of Perihelion: 2431160.2467 +/-    2125.0
Perihelion:          41.20773403 +/-    5.1426
Aphelion:            67.99204036 +/-    5.6542
Period (y)              403.4557 +/-     26.30
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.65304738 +/-    0.0086
Ecliptic Y           26.94923129 +/-    0.0056
Ecliptic Z          -15.92941234 +/-    0.0034
Ecliptic XDOT        -0.00079193 +/-    0.0002
Ecliptic YDOT         0.00234214 +/-    0.0001
Ecliptic ZDOT         0.00004413 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   51.30962391 +/-    0.0075
Geocenter to KBO     50.38349258 +/-    0.0108
# Hcoef:  8.22

The following table shows the complete astrometric record for 13VD24. 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 (13VD24) followed by the observatory code and reference code for the source of the astrometry.

2013 11  06.225937 02 29 13.70   -04 44 43.6   24.9z 13VD24    W84  C~1Yeo      
2013 11  07.058623 02 29 10.45   -04 44 56.0   25.1r 13VD24    W84  C~1Yeo      
2013 12  01.094363 02 27 42.32   -04 48 25.1   24.2z 13VD24    W84  C~1Yeo      
2013 12  01.168310 02 27 42.05   -04 48 25.2   25.2r 13VD24    W84  C~1Yeo      
2013 12  20.096412 02 26 47.98   -04 47 32.2   24.5i 13VD24    W84  C~1Yeo      
2014 01  04.113519 02 26 20.10   -04 44 31.2   24.8i 13VD24    W84  C~1Yeo      
2014 01  05.050868 02 26 18.88   -04 44 16.1   24.9r 13VD24    W84  C~1Yeo      
2014 02  04.069352 02 26 14.61   -04 32 43.5   24.1i 13VD24    W84  C~1Yeo      

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     0.14       0.00     0.04
  2   0.0023    -49.94    -0.14       4.51    -0.02
  3   0.0681  -1361.70     0.13     246.35    -0.10
  4   0.0683  -1365.54    -0.13     247.60     0.08
  5   0.1201  -2110.09     0.01     566.58    -0.08
  6   0.1612  -2442.96     0.00     875.92     0.09
  7   0.1638  -2455.15    -0.01     896.22     0.00
  8   0.2460  -2285.06    -0.00    1570.71    -0.02

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.

13VD24    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATEXTD

axisobj        55.027    68.178    51.847
ecceobj         0.249     0.498     0.029
incobj         18.947    18.956    18.950
qmin           40.058    32.353    49.351
qmax           69.728   103.928    53.769
amean          54.572    66.325    51.453
amin           54.057    63.785    51.040
amax           55.220    68.810    51.874
emean           0.251     0.493     0.027
emin            0.239     0.470     0.018
emax            0.263     0.515     0.037
imean          17.095    16.253    17.354
imin           16.761    14.515    17.195
imax           17.489    17.933    17.515
excite_mean     0.387     0.567     0.300
fracstop        1.000     1.000     1.000
cjmean          3.043     2.933     3.080

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       180.9     188.6     181.8
kozaiamp        180.0     180.0     179.9