Orbit Fit and Astrometric record for 15FO345

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: 15FO345   
# Created Thu Feb 21 02:10:15 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   56 observations of   56
# Arc:   7.05y
# First observation: 2011/04/30
#  Last observation: 2018/05/19
# Chi-squared of fit:    96.76 DOF:  106 RMS:  0.23
# Min/Max residuals:    -1.58    0.88
# Exact a, adot, b, bdot, g, gdot:
  1.782927E-05  3.195911E-02  3.656898E-06  6.479737E-03  2.912013E-02  1.442276E-03
# Covariance matrix:
  2.3525E-13 -1.0762E-13  1.8019E-14 -1.5644E-14 -5.8108E-14 -3.5108E-13
 -1.0762E-13  7.1099E-14 -1.4928E-14  1.2531E-14  3.0534E-14  2.8446E-13
  1.8019E-14 -1.4928E-14  1.3731E-13 -3.2156E-14 -4.4454E-15 -6.7738E-14
 -1.5644E-14  1.2531E-14 -3.2156E-14  1.0544E-14  6.3471E-15  5.6502E-14
 -5.8108E-14  3.0534E-14 -4.4454E-15  6.3471E-15  1.1642E-13  1.2370E-13
 -3.5108E-13  2.8446E-13 -6.7738E-14  5.6502E-14  1.2370E-13  1.2854E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   17.198186 -152.508953   -0.208568    0.292266   -0.944439  2455681.895196
# Heliocentric elements and errors
Epoch:              2455682.5000  =  2011/05/01
Mean Anomaly:           19.22302 +/-     0.012
Argument of Peri:       31.75429 +/-     0.016
Long of Asc Node:      152.89187 +/-     0.000
Inclination:            20.15451 +/-     0.000
Eccentricity:         0.12787647 +/-    0.0000
Semi-Major Axis:     40.03095490 +/-    0.0021
Time of Perihelion: 2450742.6755 +/-       3.1
Perihelion:          34.91193765 +/-    0.0024
Aphelion:            45.14997216 +/-    0.0029
Period (y)              253.2807 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.87720488 +/-    0.0003
Ecliptic Y          -15.78503867 +/-    0.0002
Ecliptic Z           10.15388290 +/-    0.0001
Ecliptic XDOT         0.00143000 +/-    0.0000
Ecliptic YDOT        -0.00263619 +/-    0.0000
Ecliptic ZDOT         0.00062211 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.28334024 +/-    0.0003
Geocenter to KBO     34.34052473 +/-    0.0004
# Hcoef:  7.09

The following table shows the complete astrometric record for 15FO345. 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 (15FO345) followed by the observatory code and reference code for the source of the astrometry.

2011 04  30.39443  14 06 34.123  +05 30 05.26  22.3w 15FO345   F51  C~1vYW      
2011 04  30.40799  14 06 34.061  +05 30 05.52  22.5w 15FO345   F51  C~1vYW      
2011 04  30.42305  14 06 33.969  +05 30 06.08  22.5w 15FO345   F51  C~1vYW      
2011 04  30.43667  14 06 33.900  +05 30 06.29  22.6w 15FO345   F51  C~1vYW      
2012 03  29.46474  14 16 34.400  +04 53 37.99  22.3G 15FO345   F51  C~2rYO      
2012 03  29.47907  14 16 34.333  +04 53 38.58  22.8G 15FO345   F51  C~2rYO      
2012 03  29.49351  14 16 34.278  +04 53 39.08  22.2G 15FO345   F51  C~2rYO      
2012 03  29.50803  14 16 34.205  +04 53 39.96  22.3G 15FO345   F51  C~2rYO      
2012 04  20.42494  14 14 45.491  +05 07 17.07  22.8G 15FO345   F51  C~2rYO      
2012 04  26.43240  14 14 13.894  +05 10 23.22  22.6G 15FO345   F51  C~2rYO      
2012 08  04.26497  14 10 04.976  +05 01 18.02  22.5G 15FO345   F51  C~2rYO      
2014 04  05.42553  14 30 43.138  +04 20 39.87  21.6w 15FO345   F51  C~1wc3      
2014 04  05.43779  14 30 43.049  +04 20 41.93  22.4w 15FO345   F51  C~1vYW      
2014 04  05.45005  14 30 42.999  +04 20 42.45  22.7w 15FO345   F51  C~1vYW      
2014 04  05.46231  14 30 42.921  +04 20 43.01  22.5w 15FO345   F51  C~1vYW      
2014 05  05.40402  14 28 10.053  +04 37 02.73  22.1G 15FO345   F51  C~2rYO      
2014 05  25.38568  14 26 30.049  +04 43 04.67  22.5w 15FO345   F51  C~1vYW      
2014 05  25.39872  14 26 29.977  +04 43 04.63  22.5w 15FO345   F51  C~1vYW      
2014 05  25.41174  14 26 29.932  +04 43 04.86  22.6w 15FO345   F51  C~1vYW      
2014 05  25.42485  14 26 29.854  +04 43 05.03  22.8w 15FO345   F51  C~1vYW      
2014 05  31.45983  14 26 02.732  +04 43 57.78  23.1G 15FO345   F51  C~2rYO      
2014 06  22.37444  14 24 44.482  +04 43 18.72  22.6G 15FO345   F51  C~2rYO      
2014 07  02.31043  14 24 21.925  +04 41 02.93  23.4G 15FO345   F51  C~2rYO      
2015 02  15.62137  14 40 11.953  +03 28 46.27  21.7G 15FO345   F51  C~2rYO      
2015 02  16.56314  14 40 11.589  +03 29 20.67  23.4G 15FO345   F51  C~2rYO      
2015 02  16.57654  14 40 11.593  +03 29 20.95  22.9G 15FO345   F51  C~2rYO      
2015 02  16.58991  14 40 11.577  +03 29 21.57  22.9G 15FO345   F51  C~2rYO      
2015 02  16.60332  14 40 11.587  +03 29 22.17  22.3G 15FO345   F51  C~2rYO      
2015 03  22.50734  14 38 58.858  +03 52 10.47  22.7w 15FO345   F51  C~1vYW      
2015 03  22.52098  14 38 58.791  +03 52 10.69  22.7w 15FO345   F51  C~1vYW      
2015 03  22.53474  14 38 58.756  +03 52 11.87  22.7w 15FO345   F51  C~1vYW      
2015 03  22.54845  14 38 58.674  +03 52 11.82  22.5w 15FO345   F51  C~1vYW      
2015 04  13.45940  14 37 22.900  +04 06 36.84  22.2G 15FO345   F51  C~2rYO      
2015 04  23.49839  14 36 31.874  +04 12 20.10  22.2w 15FO345   F51  C~1vYW      
2015 04  23.51265  14 36 31.810  +04 12 20.37  22.5w 15FO345   F51  C~1vYW      
2015 04  23.52685  14 36 31.725  +04 12 20.88  22.6w 15FO345   F51  C~1vYW      
2015 04  23.54109  14 36 31.659  +04 12 21.59  22.3w 15FO345   F51  C~1vYW      
2015 04  24.53087  14 36 26.476  +04 12 52.36  22.5G 15FO345   F51  C~2rYO      
2015 04  24.54506  14 36 26.400  +04 12 52.88  22.6G 15FO345   F51  C~2rYO      
2015 04  24.55925  14 36 26.339  +04 12 53.38  23.0G 15FO345   F51  C~2rYO      
2015 04  24.57348  14 36 26.268  +04 12 53.96  22.3G 15FO345   F51  C~2rYO      
2016 02  05.64161  14 47 14.746  +03 04 18.05  22.2G 15FO345   F51  C~2rYO      
2016 03  16.63389  14 46 29.282  +03 29 33.74  23.0G 15FO345   F51  C~2rYO      
2016 04  01.51056  14 45 30.017  +03 40 22.17  23.1G 15FO345   F51  C~2rYO      
2016 05  03.40846  14 42 52.227  +03 58 22.40  22.8G 15FO345   F51  C~2rYO      
2016 06  03.35603  14 40 18.664  +04 06 35.34  22.2G 15FO345   F51  C~2rYO      
2016 06  03.36769  14 40 18.617  +04 06 35.33  22.3G 15FO345   F51  C~2rYO      
2016 06  03.37932  14 40 18.556  +04 06 35.27  23.1G 15FO345   F51  C~2rYO      
2016 07  01.30716  14 38 44.619  +04 04 01.48  22.5G 15FO345   F51  C~2rYO      
2016 07  17.27835  14 38 21.477  +03 58 25.43  22.5G 15FO345   F51  C~2rYO      
2017 05  18.29223  14 48 50.234  +03 44 26.76  22.5G 15FO345   F51  C~2rYO      
2018 04  10.32145  14 59 17.400  +03 07 08.20  22.5R 15FO345   G37  C~2bHP      
2018 04  10.40599  14 59 17.019  +03 07 11.11        15FO345   G37  C~2bHP      
2018 04  10.44996  14 59 16.832  +03 07 12.82        15FO345   G37  C~2bHP      
2018 05  19.166460 14 55 59.231  +03 25 21.50  21.3R 15FO345   705              
2018 05  19.235450 14 55 58.900  +03 25 22.67        15FO345   705              

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    -0.10       0.00     0.01
  2   0.0000      0.00     0.05       0.00    -0.10
  3   0.0001      0.00    -0.12       0.00     0.05
  4   0.0001      0.00    -0.07       0.00    -0.11
  5   0.9146      0.00    -0.20       0.00     0.01
  6   0.9147      0.00    -0.21       0.00     0.02
  7   0.9147      0.00    -0.03       0.00    -0.07
  8   0.9148      0.00    -0.12       0.00     0.21
  9   0.9748      0.00    -0.02       0.00     0.20
 10   0.9912      0.00     0.04       0.00    -0.13
 11   1.2645      0.00     0.88       0.00    -0.05
 12   2.9323      0.00     0.36       0.00    -1.58
 13   2.9324      0.00    -0.10       0.00     0.00
 14   2.9324      0.00     0.03       0.00     0.05
 15   2.9324      0.00    -0.27       0.00     0.13
 16   3.0144      0.00     0.04       0.00     0.00
 17   3.0691      0.00     0.24       0.00     0.24
 18   3.0691      0.00     0.08       0.00     0.05
 19   3.0692      0.00     0.34       0.00     0.14
 20   3.0692      0.00     0.10       0.00     0.16
 21   3.0857      0.00    -0.15       0.00     0.07
 22   3.1457      0.00    -0.10       0.00     0.47
 23   3.1729      0.00    -0.19       0.00     0.17
 24   3.7980      0.00     0.30       0.00    -0.13
 25   3.8006      0.00    -0.07       0.00     0.09
 26   3.8006      0.00     0.09       0.00    -0.12
 27   3.8007      0.00    -0.05       0.00     0.01
 28   3.8007      0.00     0.21       0.00     0.12
 29   3.8935      0.00     0.09       0.00     0.20
 30   3.8936      0.00    -0.14       0.00    -0.15
 31   3.8936      0.00     0.12       0.00     0.46
 32   3.8936      0.00    -0.34       0.00    -0.16
 33   3.9536      0.00    -0.11       0.00     0.02
 34   3.9811      0.00    -0.03       0.00     0.14
 35   3.9812      0.00     0.14       0.00    -0.04
 36   3.9812      0.00    -0.01       0.00     0.02
 37   3.9812      0.00     0.13       0.00     0.28
 38   3.9839      0.00    -0.26       0.00    -0.20
 39   3.9840      0.00    -0.27       0.00    -0.13
 40   3.9840      0.00    -0.05       0.00    -0.07
 41   3.9841      0.00     0.01       0.00     0.07
 42   4.7700      0.00     0.17       0.00    -0.06
 43   4.8795      0.00     0.07       0.00    -0.29
 44   4.9230      0.00     0.00       0.00    -0.09
 45   5.0103      0.00     0.10       0.00     0.10
 46   5.0950      0.00    -0.12       0.00     0.12
 47   5.0951      0.00    -0.05       0.00     0.05
 48   5.0951      0.00    -0.18       0.00    -0.07
 49   5.1716      0.00    -0.22       0.00     0.19
 50   5.2153      0.00     0.01       0.00    -0.10
 51   6.0504      0.00    -0.13       0.00    -0.06
 52   6.9457      0.00    -0.27       0.00     0.16
 53   6.9460      0.00    -0.09       0.00    -0.06
 54   6.9461      0.00     0.17       0.00     0.03
 55   7.0521      0.00    -0.09       0.00    -0.06
 56   7.0523      0.00     0.36       0.00    -0.06

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.

15FO345    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        39.959    39.959    39.959
ecceobj         0.126     0.126     0.126
incobj         20.162    20.162    20.162
qmin           33.905    34.193    33.926
qmax           46.789    46.586    46.790
amean          40.214    40.248    40.205
amin           39.854    39.897    39.834
amax           40.637    40.626    40.605
emean           0.133     0.132     0.131
emin            0.113     0.116     0.112
emax            0.155     0.149     0.154
imean          19.530    19.508    19.480
imin           18.502    18.540    18.441
imax           20.621    20.420    20.531
excite_mean     0.360     0.359     0.358
fracstop        1.000     1.000     1.000
cjmean          2.908     2.909     2.909

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       175.2     176.3     176.4
kozaiamp        180.0     180.0     180.0