Orbit Fit and Astrometric record for 14SD350

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: 14SD350   
# Created Wed Dec 25 02:09:57 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     18 observations of     18
# Arc:   8.10y
# First observation: 2014/07/21
#  Last observation: 2022/08/27
# Chi-squared of fit:    15.11 DOF:     30 RMS:  0.16
# Min/Max residuals:    -0.34    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.399001E-05  1.767828E-02  8.241061E-06  9.681906E-03  2.110042E-02 -6.415457E-03
# Covariance matrix:
  4.3738E-13  7.0899E-15 -2.5143E-14  2.3408E-14  3.4908E-13  2.5279E-13
  7.0899E-15  1.2134E-13 -2.1845E-14  7.0221E-14  6.9211E-14  8.7589E-13
 -2.5143E-14 -2.1845E-14  1.3226E-13 -3.2325E-14 -3.5475E-14 -1.7231E-13
  2.3408E-14  7.0221E-14 -3.2325E-14  5.1431E-14  5.1233E-14  5.4317E-13
  3.4908E-13  6.9211E-14 -3.5475E-14  5.1233E-14  4.0709E-13  5.9618E-13
  2.5279E-13  8.7589E-13 -1.7231E-13  5.4317E-13  5.9618E-13  6.7678E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -16.968352  -30.422065    0.528650   -0.253985   -0.832739  2456859.780604
# Heliocentric elements and errors
Epoch:              2456860.5000  =  2014/07/22
Mean Anomaly:          323.76303 +/-     0.012
Argument of Peri:       41.94085 +/-     0.015
Long of Asc Node:      356.51664 +/-     0.000
Inclination:            32.87511 +/-     0.000
Eccentricity:         0.37688676 +/-    0.0001
Semi-Major Axis:     62.10869330 +/-    0.0127
Time of Perihelion: 2474856.5157 +/-      49.6
Perihelion:          38.70074904 +/-    0.0122
Aphelion:            85.51663755 +/-    0.0198
Period (y)              489.4821 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.56964017 +/-    0.0012
Ecliptic Y          -23.84775561 +/-    0.0007
Ecliptic Z          -13.83077406 +/-    0.0004
Ecliptic XDOT         0.00078606 +/-    0.0000
Ecliptic YDOT         0.00219148 +/-    0.0000
Ecliptic ZDOT         0.00144463 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.22638944 +/-    0.0010
Geocenter to KBO     47.39267821 +/-    0.0014
# Hcoef:  7.02

The following table shows the complete astrometric record for 14SD350. 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 (14SD350) followed by the observatory code and reference code for the source of the astrometry.

2014 07  21.279826 22 33 11.30   -27 24 49.6         14SD350   W84  C~4qPY      
2014 07  21.284190 22 33 11.28   -27 24 49.5         14SD350   W84  C~4qPY      
2014 07  21.299433 22 33 11.26   -27 24 50.2         14SD350   W84  C~4qPY      
2014 09  22.05418  22 28 36.955  -27 43 57.45  24.0r 14SD350   807  C~1x8l      
2014 09  22.05419  22 28 36.96   -27 43 57.7   24.0V 14SD350   W84  C~2JA3      
2014 09  22.12365  22 28 36.642  -27 43 57.80        14SD350   807  C~1x8l      
2014 09  22.12366  22 28 36.66   -27 43 58.1         14SD350   W84  C~2JA3      
2014 09  22.21571  22 28 36.250  -27 43 58.05        14SD350   807  C~1x8l      
2014 09  22.21572  22 28 36.27   -27 43 58.6         14SD350   W84  C~2JA3      
2014 10  25.05002  22 26 45.632  -27 41 34.40        14SD350   304  C~1x8l      
2014 10  26.00859  22 26 43.444  -27 41 20.45        14SD350   304  C~1x8l      
2014 11  19.03710  22 26 14.179  -27 32 45.08        14SD350   304  C~1x8l      
2014 11  19.11554  22 26 14.161  -27 32 42.97        14SD350   304  C~1x8l      
2019 09  30.159967 22 44 15.30   -23 03 44.2         14SD350   W84  C~5nIG      
2019 09  30.166966 22 44 15.27   -23 03 44.1         14SD350   W84  C~5nIG      
2022 08  27.237040 22 56 28.974  -19 53 55.76  23.1G 14SD350   G37  C~5nIG      
2022 08  27.283940 22 56 28.758  -19 53 56.73        14SD350   G37  C~5nIG      
2022 08  27.330710 22 56 28.544  -19 53 57.74        14SD350   G37  C~5nIG      

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    -0.07       0.00    -0.25
     2   0.0000      0.00    -0.14       0.00    -0.03
     3   0.0001      0.00     0.39       0.00    -0.34
     4   0.1719      0.00     0.02       0.00     0.19
     5   0.1719      0.00     0.10       0.00    -0.06
     6   0.1721      0.00    -0.18       0.00     0.21
     7   0.1721      0.00     0.09       0.00    -0.09
     8   0.1723      0.00    -0.12       0.00     0.43
     9   0.1723      0.00     0.18       0.00    -0.12
    10   0.2622      0.00     0.29       0.00    -0.01
    11   0.2648      0.00    -0.12       0.00     0.10
    12   0.3306      0.00    -0.16       0.00     0.06
    13   0.3308      0.00    -0.16       0.00    -0.03
    14   5.1934      0.00    -0.02       0.00    -0.07
    15   5.1934      0.00    -0.03       0.00     0.07
    16   8.1012      0.00    -0.01       0.00    -0.03
    17   8.1013      0.00    -0.01       0.00     0.01
    18   8.1014      0.00     0.02       0.00    -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.

14SD350    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        62.621    62.620    62.621
ecceobj         0.381     0.381     0.381
incobj         32.767    32.767    32.767
qmin           37.801    37.817    37.793
qmax           89.048    88.877    89.083
amean          62.628    62.639    62.635
amin           61.744    61.736    61.750
amax           63.729    63.707    63.744
emean           0.366     0.372     0.366
emin            0.339     0.354     0.338
emax            0.397     0.396     0.398
imean          33.838    33.614    33.830
imin           32.940    32.955    32.929
imax           34.570    34.057    34.578
excite_mean     0.666     0.667     0.666
fracstop        1.000     1.000     1.000
cjmean          2.711     2.710     2.711

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       200.5     195.0     202.8
kozaiamp        180.0     151.1     180.0