Orbit Fit and Astrometric record for 13SE99

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: 13SE99    
# Created Fri Dec 15 02:37:53 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   18
# Arc:   1.23y
# First observation: 2013/09/29
#  Last observation: 2014/12/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000036   0.021953   0.000001   0.002641   0.021821   0.000000
# Chi-squared of fit:     7.31 DOF:   26 RMS:  0.12
# Min/Max residuals:    -0.31    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.664273E-05  2.203771E-02  1.440881E-06  2.683969E-03  2.191579E-02  9.373242E-03
# Covariance matrix:
  6.4296E-13  1.0112E-12  1.7563E-14  2.0272E-13  1.5288E-12  6.8620E-11
  1.0112E-12  3.8431E-12  2.6720E-14  8.0300E-13  4.0815E-12  2.5078E-10
  1.7563E-14  2.6720E-14  1.8336E-13 -1.7010E-13  5.2188E-14 -5.6431E-14
  2.0272E-13  8.0300E-13 -1.7010E-13  5.6178E-13  7.6726E-13  7.1928E-11
  1.5288E-12  4.0815E-12  5.2188E-14  7.6726E-13  5.1281E-12  2.5270E-10
  6.8620E-11  2.5078E-10 -5.6431E-14  7.1928E-11  2.5270E-10  2.1260E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -17.404803   32.643707    0.450020   -0.267656   -0.854207  2456564.775477
# Heliocentric elements and errors
Epoch:              2456560.5000  =  2013/09/25
Mean Anomaly:           19.35687 +/-     0.327
Argument of Peri:      224.12779 +/-     0.336
Long of Asc Node:      100.64574 +/-     0.007
Inclination:            18.25912 +/-     0.001
Eccentricity:         0.54511529 +/-    0.0073
Semi-Major Axis:     80.62941918 +/-    0.9070
Time of Perihelion: 2442341.4221 +/-      15.0
Perihelion:          36.67708963 +/-    0.7170
Aphelion:           124.58174872 +/-    1.5192
Period (y)              724.0166 +/-     12.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.65824387 +/-    0.0038
Ecliptic Y           23.59311926 +/-    0.0024
Ecliptic Z          -13.64860966 +/-    0.0014
Ecliptic XDOT        -0.00046591 +/-    0.0000
Ecliptic YDOT         0.00297370 +/-    0.0000
Ecliptic ZDOT        -0.00003017 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.48723646 +/-    0.0033
Geocenter to KBO     45.62920238 +/-    0.0047
# Hcoef:  8.28

The following table shows the complete astrometric record for 13SE99. 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 (13SE99) followed by the observatory code and reference code for the source of the astrometry.

2013 09  29.274699 02 25 23.17   -03 59 47.4   24.0i 13SE99    W84  C~1I2D      
2013 09  29.283715 02 25 23.12   -03 59 47.1   24.7i 13SE99    W84  C~1I2D      
2013 09  29.321794 02 25 22.99   -03 59 48.4   24.3r 13SE99    W84  C~1I2D      
2013 10  11.127616 02 24 39.59   -04 04 59.7   23.8i 13SE99    W84  C~1I2D      
2013 10  11.136609 02 24 39.56   -04 04 59.9   24.4i 13SE99    W84  C~1I2D      
2013 10  11.141123 02 24 39.53   -04 04 59.9   24.3i 13SE99    W84  C~1I2D      
2013 10  27.110775 02 23 34.48   -04 11 02.5   23.3r 13SE99    W84  C~1I2D      
2013 10  27.115741 02 23 34.48   -04 11 02.6   23.6r 13SE99    W84  C~1I2D      
2013 11  06.258322 02 22 51.85   -04 14 02.4   24.5i 13SE99    W84  C~1I2D      
2013 11  06.262824 02 22 51.82   -04 14 02.2   24.4i 13SE99    W84  C~1I2D      
2013 11  06.267338 02 22 51.80   -04 14 02.4   23.9i 13SE99    W84  C~1I2D      
2014 11  12.098183 02 27 01.63   -03 41 27.4   24.5r 13SE99    W84  C~1I2D      
2014 11  12.103137 02 27 01.62   -03 41 27.2   25.0r 13SE99    W84  C~1I2D      
2014 11  12.108067 02 27 01.59   -03 41 27.4   24.1r 13SE99    W84  C~1I2D      
2014 11  19.114757 02 26 33.36   -03 42 45.5   24.8i 13SE99    W84  C~1I2D      
2014 11  19.158981 02 26 33.18   -03 42 45.9   23.7z 13SE99    W84  C~1I2D      
2014 12  21.112130 02 24 48.62   -03 42 55.0   24.6r 13SE99    W84  C~1I2D      
2014 12  21.131701 02 24 48.57   -03 42 54.6   24.3i 13SE99    W84  C~1I2D      

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    -0.15       0.00     0.10
  2   0.0000     -0.60 (  -0.23)      0.53 (   0.71)
  3   0.0001     -2.87 (  -0.27)     -0.04 (   0.45)
  4   0.0325   -719.07     0.06     -75.31     0.03
  5   0.0325   -719.56     0.14     -75.35     0.03
  6   0.0325   -719.99     0.01     -75.20     0.20
  7   0.0762  -1758.48    -0.15     -90.39    -0.20
  8   0.0762  -1758.51     0.15     -90.48    -0.31
  9   0.1040  -2419.69     0.04     -46.17    -0.12
 10   0.1040  -2420.04    -0.02     -45.83     0.18
 11   0.1040  -2420.39    -0.08     -45.92     0.07
 12   1.1193   1757.55    -0.12     540.96    -0.17
 13   1.1193   1757.47     0.12     541.20     0.03
 14   1.1193   1756.98    -0.06     541.16    -0.05
 15   1.1385   1332.73     0.05     609.65     0.10
 16   1.1386   1330.06     0.02     610.18     0.12
 17   1.2261   -147.23    -0.02    1127.24    -0.12
 18   1.2262   -147.80     0.02    1127.87     0.10

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.

13SE99    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        81.792    84.590    79.269
ecceobj         0.552     0.572     0.531
incobj         18.269    18.267    18.271
qmin           35.454    34.629    36.163
qmax          128.171   135.197   122.140
amean          80.492    83.105    77.963
amin           79.298    81.376    76.820
amax           82.224    85.289    79.561
emean           0.545     0.569     0.524
emin            0.531     0.553     0.514
emax            0.559     0.585     0.536
imean          16.603    16.016    16.639
imin           15.791    15.040    16.306
imax           17.668    17.059    17.117
excite_mean     0.616     0.632     0.597
fracstop        1.000     1.000     1.000
cjmean          3.001     2.990     3.012

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       188.5     188.8     181.1
kozaiamp        180.0     179.9     180.0