Orbit Fit and Astrometric record for 14SJ349

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: 14SJ349   
# Created Mon Dec 18 02:38:05 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc: 120.77d
# First observation: 2014/09/23
#  Last observation: 2015/01/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000095   0.045492   0.000107   0.000624   0.030981   0.000000
# Chi-squared of fit:    15.16 DOF:   26 RMS:  0.17
# Min/Max residuals:    -0.33    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.850484E-05  3.264414E-02 -1.183009E-07  1.169755E-03  2.872884E-02 -2.332135E-04
# Covariance matrix:
  4.6217E-13 -4.6821E-12 -2.5962E-14  2.0106E-13  9.1851E-14  1.0180E-10
 -4.6821E-12  1.3285E-09  1.1676E-11 -5.8980E-11  1.8880E-10 -9.4592E-09
 -2.5962E-14  1.1676E-11  3.9503E-13 -1.8202E-12  1.6841E-12 -8.1774E-11
  2.0106E-13 -5.8980E-11 -1.8202E-12  1.1082E-11 -8.2581E-12  4.4658E-10
  9.1851E-14  1.8880E-10  1.6841E-12 -8.2581E-12  2.9051E-11 -1.0771E-09
  1.0180E-10 -9.4592E-09 -8.1774E-11  4.4658E-10 -1.0771E-09  1.0495E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.893552   47.295209    0.737786   -0.105589   -0.675565  2456924.009268
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          351.42432 +/-     2.685
Argument of Peri:      294.01557 +/-     3.820
Long of Asc Node:      124.03216 +/-     0.039
Inclination:             8.91495 +/-     0.001
Eccentricity:         0.16521382 +/-    0.0037
Semi-Major Axis:     42.38116267 +/-    0.1020
Time of Perihelion: 2459321.1231 +/-     751.6
Perihelion:          35.37920874 +/-    0.1798
Aphelion:            49.38311660 +/-    0.1980
Period (y)              275.9100 +/-      1.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.32687478 +/-    0.0044
Ecliptic Y           25.27544129 +/-    0.0047
Ecliptic Z           -5.38132368 +/-    0.0010
Ecliptic XDOT        -0.00229399 +/-    0.0000
Ecliptic YDOT         0.00210188 +/-    0.0000
Ecliptic ZDOT         0.00011369 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.49089198 +/-    0.0045
Geocenter to KBO     34.80822849 +/-    0.0065
# Hcoef:  6.84

The following table shows the complete astrometric record for 14SJ349. 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 (14SJ349) followed by the observatory code and reference code for the source of the astrometry.

2014 09  23.50849  03 09 25.805  +08 27 01.47  22.2w 14SJ349   F51  C~1vXj      
2014 09  23.52116  03 09 25.787  +08 27 00.76  22.3w 14SJ349   F51  C~1vXj      
2014 09  23.53385  03 09 25.728  +08 27 00.69  22.3w 14SJ349   F51  C~1vXj      
2014 10  29.40788  03 06 46.296  +08 11 34.62  22.3w 14SJ349   F51  C~1vXj      
2014 10  29.42083  03 06 46.216  +08 11 34.27  22.4w 14SJ349   F51  C~1vXj      
2014 10  29.43372  03 06 46.153  +08 11 33.32  22.1w 14SJ349   F51  C~1vXj      
2014 11  24.34518  03 04 24.370  +08 02 05.62  22.2w 14SJ349   F51  C~1vXj      
2014 11  24.36028  03 04 24.282  +08 02 05.51  22.4w 14SJ349   F51  C~1vXj      
2014 11  24.37539  03 04 24.209  +08 02 05.19  22.4w 14SJ349   F51  C~1vXj      
2014 11  24.39050  03 04 24.143  +08 02 04.62  22.5w 14SJ349   F51  C~1vXj      
2014 11  26.29746  03 04 13.974  +08 01 31.60  22.3w 14SJ349   F51  C~1vXj      
2014 11  26.31989  03 04 13.849  +08 01 31.74  22.3w 14SJ349   F51  C~1vXj      
2014 11  26.33108  03 04 13.807  +08 01 31.29  22.3w 14SJ349   F51  C~1vXj      
2015 01  22.25005  03 01 01.735  +07 59 13.47  23.1w 14SJ349   F51  C~1vXj      
2015 01  22.26541  03 01 01.722  +07 59 13.74  22.8w 14SJ349   F51  C~1vXj      
2015 01  22.28083  03 01 01.704  +07 59 13.67  22.9w 14SJ349   F51  C~1vXj      

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    -0.11       0.00     0.16
  2   0.0000     -0.45     0.11      -0.61    -0.32
  3   0.0001     -1.31    -0.07      -0.44    -0.02
  4   0.0983  -2530.81     0.19    -243.89     0.29
  5   0.0983  -2532.05     0.05    -243.90     0.30
  6   0.0984  -2533.21    -0.02    -244.55    -0.33
  7   0.1693  -4714.30    -0.01    -211.24    -0.04
  8   0.1693  -4715.58    -0.05    -210.98     0.14
  9   0.1694  -4716.71     0.07    -210.99     0.05
 10   0.1694  -4717.81     0.22    -211.27    -0.31
 11   0.1746  -4872.19    -0.25    -201.35    -0.17
 12   0.1747  -4873.93    -0.17    -200.70     0.34
 13   0.1747  -4874.66     0.01    -200.96     0.01
 14   0.3306  -7656.93     0.06     456.73     0.00
 15   0.3306  -7657.04     0.07     457.04     0.07
 16   0.3307  -7657.32    -0.09     457.05    -0.17

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.

14SJ349    quality flag:2

Type:          5:3EE  SCATNEAR     5:3EE

axisobj        42.721    42.966    42.515
ecceobj         0.171     0.179     0.165
incobj          8.917     8.914     8.919
qmin           34.882    34.504    34.262
qmax           50.135    50.950    51.218
amean          42.328    42.361    42.328
amin           41.950    41.748    41.779
amax           42.748    42.966    42.937
emean           0.156     0.157     0.169
emin            0.140     0.125     0.148
emax            0.173     0.187     0.193
imean           7.692     4.163     6.862
imin            7.102     0.103     5.411
imax            8.512     8.096     8.921
excite_mean     0.205     0.177     0.208
fracstop        1.000     1.000     1.000
cjmean          3.033     3.046     3.031

libcent 0       178.7    -180.0     175.4
libamp  0        38.0    -180.0     142.8
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       174.8     169.0     188.5
kozaiamp        179.9     180.0     180.0