Orbit Fit and Astrometric record for 14SS303

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: 14SS303   
# Created Thu Oct 19 01:38:28 2017
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   13
# Arc: 123.69d
# First observation: 2014/09/20
#  Last observation: 2015/01/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000101   0.497419   0.000212  -0.014787   0.169466   0.000000
# Chi-squared of fit:    10.63 DOF:   20 RMS:  0.16
# Min/Max residuals:    -0.28    0.43
# Exact a, adot, b, bdot, g, gdot:
  4.716936E-05  5.105711E-01  1.884697E-07 -5.168989E-03  1.733339E-01  1.831876E-02
# Covariance matrix:
  3.1046E-13  1.1682E-11 -4.0620E-14  1.7930E-12  4.1928E-12  2.0740E-10
  1.1682E-11  1.4334E-09 -5.9622E-12  2.6852E-10  4.8159E-10  2.8233E-08
 -4.0620E-14 -5.9622E-12  2.0258E-13 -1.9770E-12 -2.0075E-12 -1.3179E-10
  1.7930E-12  2.6852E-10 -1.9770E-12  6.8776E-11  9.0388E-11  5.9806E-09
  4.1928E-12  4.8159E-10 -2.0075E-12  9.0388E-11  1.6281E-10  9.5171E-09
  2.0740E-10  2.8233E-08 -1.3179E-10  5.9806E-09  9.5171E-09  6.0545E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.381675    3.599010    0.113700   -0.076319   -0.997465  2456920.932398
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:            0.96919 +/-     0.080
Argument of Peri:      256.64287 +/-     0.266
Long of Asc Node:      102.77543 +/-     0.005
Inclination:             3.79410 +/-     0.000
Eccentricity:         0.48772535 +/-    0.0001
Semi-Major Axis:     13.20024401 +/-    0.0015
Time of Perihelion: 2456873.3395 +/-       3.9
Perihelion:           6.76215042 +/-    0.0018
Aphelion:            19.63833759 +/-    0.0027
Period (y)               47.9602 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            6.74413661 +/-    0.0004
Ecliptic Y            0.31204572 +/-    0.0000
Ecliptic Z           -0.44075158 +/-    0.0000
Ecliptic XDOT        -0.00022921 +/-    0.0000
Ecliptic YDOT         0.00806186 +/-    0.0000
Ecliptic ZDOT        -0.00010340 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    6.76572340 +/-    0.0004
Geocenter to KBO      5.76921304 +/-    0.0004
# Hcoef: 13.69

The following table shows the complete astrometric record for 14SS303. 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 (14SS303) followed by the observatory code and reference code for the source of the astrometry.

2014 09  20.43162  00 20 10.344  -02 35 26.13  21.9w 14SS303   F51  C~1A2z      
2014 09  20.44381  00 20 10.106  -02 35 27.84  21.9w 14SS303   F51  C~1A2z      
2014 09  20.45597  00 20 09.862  -02 35 29.25  21.7w 14SS303   F51  C~1A2z      
2014 09  23.264658 00 19 14.72   -02 41 46.3   21.7V 14SS303   H21  C~1A2z      
2014 09  23.282237 00 19 14.38   -02 41 48.6   21.7V 14SS303   H21  C~1A2z      
2014 09  23.301436 00 19 13.98   -02 41 51.1   21.8V 14SS303   H21  C~1A2z      
2014 09  30.35713  00 16 53.95   -02 57 15.8   21.8R 14SS303   291  C~1A2z      
2014 09  30.36790  00 16 53.78   -02 57 17.1   21.8R 14SS303   291  C~1A2z      
2014 10  22.17200  00 10 14.00   -03 36 45.0   21.2R 14SS303   G37  C~1Byq      
2014 10  22.27866  00 10 12.25   -03 36 53.9         14SS303   G37  C~1Byq      
2015 01  22.10946  00 19 17.50   -01 48 45.6   22.0R 14SS303   G37  C~1MjX      
2015 01  22.11339  00 19 17.59   -01 48 44.5         14SS303   G37  C~1MjX      
2015 01  22.12184  00 19 17.81   -01 48 43.0         14SS303   G37  C~1MjX      

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    -0.12       0.00    -0.14
  2   0.0000     -3.95    -0.05      -0.15    -0.24
  3   0.0001     -7.87     0.04       0.01    -0.04
  4   0.0078   -915.92    -0.09     -17.73     0.14
  5   0.0078   -921.50     0.14     -17.81     0.09
  6   0.0079   -928.00     0.00     -17.73     0.22
  7   0.0272  -3220.85    -0.28     -33.58     0.02
  8   0.0272  -3223.70     0.43     -33.76    -0.21
  9   0.0869  -9665.59     0.03     163.05     0.08
 10   0.0872  -9693.23    -0.09     165.23     0.12
 11   0.3386    385.89     0.16    2884.88    -0.21
 12   0.3386    387.56     0.04    2885.36     0.16
 13   0.3386    391.19    -0.20    2885.42    -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.

14SS303    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        13.193    13.516    12.883
ecceobj         0.491     0.489     0.493
incobj          3.794     3.794     3.793
qmin            6.716     6.904     6.269
qmax           20.456    20.127    20.861
amean          13.417    13.451    13.290
amin           13.193    13.387    12.883
amax           13.641    13.516    13.565
emean           0.495     0.479     0.519
emin            0.491     0.468     0.493
emax            0.500     0.489     0.538
imean           2.234     2.006     2.025
imin            2.225     1.787     1.927
imax            2.243     2.225     2.224
excite_mean     0.497     0.480     0.520
fracstop        0.000     0.000     0.000
cjmean          3.400     3.408     3.401

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       258.5     252.6     267.7
kozaiamp          1.5       2.3       8.7