Orbit Fit and Astrometric record for 14SG404

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: 14SG404   
# Created Wed Dec  8 02:12:47 2021
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:   4.17y
# First observation: 2014/09/30
#  Last observation: 2018/12/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000030   0.029848  -0.000152   0.010659   0.025671   0.000000
# Chi-squared of fit:     5.29 DOF:     28 RMS:  0.10
# Min/Max residuals:    -0.20    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.799289E-05  2.971691E-02  6.788718E-06  1.053400E-02  2.589314E-02 -2.964370E-03
# Covariance matrix:
  4.9564E-13 -4.8806E-13  1.0478E-13 -1.7637E-13  1.5921E-14 -3.9825E-12
 -4.8806E-13  7.2909E-13 -1.9619E-13  3.0718E-13  6.0303E-14  6.8562E-12
  1.0478E-13 -1.9619E-13  3.3304E-13 -1.9966E-13 -5.3773E-14 -1.9750E-12
 -1.7637E-13  3.0718E-13 -1.9966E-13  2.0791E-13  2.1803E-14  3.1829E-12
  1.5921E-14  6.0303E-14 -5.3773E-14  2.1803E-14  2.6047E-13  2.5302E-13
 -3.9825E-12  6.8562E-12 -1.9750E-12  3.1829E-12  2.5302E-13  7.1381E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.043996   16.478166    0.170269   -0.434219   -0.888919  2456930.746968
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          355.21461 +/-     0.013
Argument of Peri:      321.49764 +/-     0.046
Long of Asc Node:       66.76812 +/-     0.001
Inclination:            31.60219 +/-     0.000
Eccentricity:         0.50106439 +/-    0.0001
Semi-Major Axis:     78.10260227 +/-    0.0144
Time of Perihelion: 2460281.7888 +/-       9.0
Perihelion:          38.96816967 +/-    0.0101
Aphelion:           117.23703486 +/-    0.0228
Period (y)              690.2501 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.26794752 +/-    0.0007
Ecliptic Y            9.96162470 +/-    0.0002
Ecliptic Z          -16.95645901 +/-    0.0003
Ecliptic XDOT        -0.00069698 +/-    0.0000
Ecliptic YDOT         0.00306732 +/-    0.0000
Ecliptic ZDOT         0.00113846 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.51009613 +/-    0.0006
Geocenter to KBO     38.62026611 +/-    0.0008
# Hcoef:  7.76

The following table shows the complete astrometric record for 14SG404. 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 (14SG404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.24619  01 41 27.788  -17 32 42.77  23.8r 14SG404   W84  C~55S9      
2015 01  12.08409  01 35 28.198  -17 14 20.68  24.1r 14SG404   W84  C~55S9      
2015 01  12.08546  01 35 28.210  -17 14 20.44  24.4g 14SG404   W84  C~55S9      
2015 08  24.40383  01 49 11.552  -15 56 14.90  23.5i 14SG404   W84  C~55S9      
2015 08  24.40521  01 49 11.545  -15 56 14.87  24.5r 14SG404   W84  C~55S9      
2015 08  24.40661  01 49 11.548  -15 56 15.03  23.9r 14SG404   W84  C~55S9      
2015 10  07.20837  01 46 26.001  -16 21 26.21  24.6g 14SG404   W84  C~55S9      
2015 11  30.18274  01 42 10.247  -16 26 58.96  23.2i 14SG404   W84  C~55S9      
2015 12  01.08738  01 42 06.962  -16 26 42.99  23.3r 14SG404   W84  C~55S9      
2016 09  30.26542  01 52 23.480  -15 03 11.28  23.4r 14SG404   W84  C~55S9      
2016 09  30.26680  01 52 23.465  -15 03 11.38  23.6i 14SG404   W84  C~55S9      
2016 10  02.23330  01 52 14.291  -15 04 09.24  23.0i 14SG404   W84  C~55S9      
2016 10  02.23468  01 52 14.266  -15 04 09.35  23.4r 14SG404   W84  C~55S9      
2017 10  30.27947  01 55 21.042  -13 57 43.97  23.1z 14SG404   W84  C~55S9      
2017 11  17.12871  01 53 54.183  -13 59 07.00  24.4g 14SG404   W84  C~55S9      
2017 11  24.16543  01 53 23.265  -13 58 26.35  23.9r 14SG404   W84  C~55S9      
2018 12  02.13009  01 58 14.793  -12 40 49.68  23.2r 14SG404   W84  C~55S9      

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     0.03       0.00    -0.07
     2   0.2843  -4289.44    -0.09    3053.08     0.08
     3   0.2843  -4289.19     0.13    3053.23     0.17
     4   0.8984   8438.58    -0.01    2599.61    -0.07
     5   0.8985   8438.50    -0.03    2599.68     0.03
     6   0.8985   8438.47     0.01    2599.51    -0.10
     7   1.0184   5640.94    -0.11    2190.30    -0.07
     8   1.1662   2137.72    -0.12    3370.27    -0.20
     9   1.1686   2100.82     0.13    3403.85     0.05
    10   2.0014  12286.54     0.05    4367.68     0.14
    11   2.0014  12286.30    -0.09    4367.68     0.14
    12   2.0068  12140.84     0.21    4369.65    -0.09
    13   2.0068  12140.46    -0.06    4369.70    -0.04
    14   3.0829  16281.81    -0.12    6888.16     0.10
    15   3.1318  15089.73     0.00    7336.69     0.09
    16   3.1510  14694.70     0.01    7560.04    -0.04
    17   4.1722  20551.91     0.06   10053.48    -0.11

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.

14SG404    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        79.529    79.575    79.483
ecceobj         0.510     0.510     0.509
incobj         31.595    31.595    31.595
qmin           38.208    38.152    37.783
qmax          120.626   120.654   121.238
amean          78.377    78.378    78.378
amin           77.362    77.374    77.248
amax           79.841    79.852    79.915
emean           0.502     0.502     0.503
emin            0.491     0.489     0.492
emax            0.512     0.513     0.517
imean          30.425    30.421    30.328
imin           30.071    30.021    29.924
imax           30.728    30.831    30.754
excite_mean     0.713     0.713     0.713
fracstop        1.000     1.000     1.000
cjmean          2.791     2.791     2.791

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       139.2     141.3     133.4
kozaiamp        180.0     180.0     180.0