Orbit Fit and Astrometric record for 13HV156

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: 13HV156   
# Created Wed Aug 15 01:38:00 2018
# Orbit generated from Bernstein formalism
# Fitting   52 observations of   52
# Arc:  16.84y
# First observation: 2001/06/15
#  Last observation: 2018/04/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.002451   0.017990  -0.000422   0.002718   0.025143   0.000000
# Chi-squared of fit:    28.69 DOF:   98 RMS:  0.13
# Min/Max residuals:    -0.31    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.333224E-05  1.686344E-02  1.988790E-06  2.509342E-03  2.019121E-02 -3.041178E-03
# Covariance matrix:
  4.8592E-13 -6.5993E-14  9.0852E-15 -5.0472E-15 -4.1708E-14 -1.2197E-13
 -6.5993E-14  2.0832E-14 -4.8958E-15  2.7251E-15  2.1189E-14  6.6087E-14
  9.0852E-15 -4.8958E-15  4.2519E-13 -3.3146E-14 -7.2628E-15 -1.7774E-14
 -5.0472E-15  2.7251E-15 -3.3146E-14  3.0443E-15  3.7307E-15  9.8941E-15
 -4.1708E-14  2.1189E-14 -7.2628E-15  3.7307E-15  1.0724E-13  7.6764E-14
 -1.2197E-13  6.6087E-14 -1.7774E-14  9.8941E-15  7.6764E-14  2.3997E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   16.500279 -129.352459   -0.561732    0.242163   -0.818096  2452075.713923
# Heliocentric elements and errors
Epoch:              2452070.5000  =  2001/06/10
Mean Anomaly:          256.71239 +/-     0.021
Argument of Peri:      185.64931 +/-     0.014
Long of Asc Node:      168.65361 +/-     0.001
Inclination:            18.13920 +/-     0.000
Eccentricity:         0.17784771 +/-    0.0000
Semi-Major Axis:     47.11232740 +/-    0.0026
Time of Perihelion: 2485958.5048 +/-       6.1
Perihelion:          38.73350764 +/-    0.0025
Aphelion:            55.49114716 +/-    0.0033
Period (y)              323.3777 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.21377824 +/-    0.0005
Ecliptic Y          -37.73063683 +/-    0.0006
Ecliptic Z           14.06665087 +/-    0.0002
Ecliptic XDOT         0.00207169 +/-    0.0000
Ecliptic YDOT        -0.00106739 +/-    0.0000
Ecliptic ZDOT         0.00020932 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.34226870 +/-    0.0005
Geocenter to KBO     49.52649455 +/-    0.0008
# Hcoef:  5.22

The following table shows the complete astrometric record for 13HV156. 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 (13HV156) followed by the observatory code and reference code for the source of the astrometry.

2001 06  15.213180 15 30 07.39   -01 58 03.5   22.5V 13HV156   645  C~2e9a      
2001 06  15.214009 15 30 07.38   -01 58 03.6   22.7V 13HV156   645  C~2e9a      
2001 06  15.216497 15 30 07.39   -01 58 03.6   22.9V 13HV156   645  C~2e9a      
2012 06  13.33589  16 14 30.803  -03 06 40.24  21.9w 13HV156   F51  C~1vWy      
2012 06  13.35064  16 14 30.749  -03 06 40.27  21.8w 13HV156   F51  C~1vWy      
2012 06  13.36539  16 14 30.676  -03 06 40.20  22.0w 13HV156   F51  C~1vWy      
2012 06  13.38012  16 14 30.623  -03 06 40.20  21.9w 13HV156   F51  C~1vWy      
2013 04  19.52014  16 22 15.317  -03 26 02.94  22.2w 13HV156   F51  C~1vWy      
2013 04  19.53299  16 22 15.278  -03 26 02.58  22.0w 13HV156   F51  C~1vWy      
2013 04  19.54654  16 22 15.239  -03 26 02.33  22.2w 13HV156   F51  C~1vWy      
2013 04  19.55942  16 22 15.184  -03 26 01.75  22.5w 13HV156   F51  C~1vWy      
2013 05  15.50170  16 20 40.620  -03 17 39.82  22.2w 13HV156   F51  C~1vWy      
2013 05  15.51498  16 20 40.567  -03 17 39.51  22.2w 13HV156   F51  C~1vWy      
2013 05  15.52824  16 20 40.515  -03 17 39.23  22.2w 13HV156   F51  C~1vWy      
2013 05  15.54152  16 20 40.466  -03 17 39.29  22.0w 13HV156   F51  C~1vWy      
2013 06  18.34126  16 18 22.915  -03 12 29.67  21.5i 13HV156   F51  C~1vWy      
2013 06  18.36342  16 18 22.824  -03 12 29.71  21.9r 13HV156   F51  C~1vWy      
2013 06  18.37359  16 18 22.779  -03 12 29.47  21.7r 13HV156   F51  C~1vWy      
2014 05  07.44590  16 25 26.302  -03 26 03.83  22.0w 13HV156   F51  C~1vWy      
2014 05  07.45812  16 25 26.255  -03 26 03.80  22.0w 13HV156   F51  C~1vWy      
2014 05  07.47032  16 25 26.208  -03 26 03.53  21.9w 13HV156   F51  C~1vWy      
2014 05  07.48256  16 25 26.156  -03 26 03.30  22.0w 13HV156   F51  C~1vWy      
2014 06  02.36081  16 23 40.880  -03 20 05.60  22.1w 13HV156   F51  C~1vWy      
2014 06  02.37204  16 23 40.831  -03 20 05.52  22.1w 13HV156   F51  C~1vWy      
2014 06  02.38329  16 23 40.785  -03 20 05.43  21.8w 13HV156   F51  C~1vWy      
2014 06  02.39456  16 23 40.739  -03 20 05.41  21.9w 13HV156   F51  C~1vWy      
2014 07  29.31533  16 20 34.539  -03 22 56.93  22.2w 13HV156   F51  C~1vWy      
2014 07  29.32741  16 20 34.526  -03 22 56.78  21.9w 13HV156   F51  C~1vWy      
2014 07  29.33950  16 20 34.490  -03 22 57.06  22.1w 13HV156   F51  C~1vWy      
2014 07  29.35156  16 20 34.482  -03 22 57.32  22.1w 13HV156   F51  C~1vWy      
2014 07  30.33886  16 20 32.780  -03 23 11.79  22.0w 13HV156   F51  C~1vWy      
2014 07  30.35083  16 20 32.754  -03 23 11.97  22.0w 13HV156   F51  C~1vWy      
2014 07  30.36277  16 20 32.734  -03 23 12.36  22.1w 13HV156   F51  C~1vWy      
2014 07  30.37472  16 20 32.697  -03 23 12.56  22.1w 13HV156   F51  C~1vWy      
2014 08  18.25384  16 20 14.201  -03 28 52.12  22.2w 13HV156   F51  C~1vWy      
2014 08  18.26595  16 20 14.209  -03 28 52.59  22.2w 13HV156   F51  C~1vWy      
2014 08  18.27808  16 20 14.195  -03 28 52.82  22.1w 13HV156   F51  C~1vWy      
2014 08  18.29012  16 20 14.190  -03 28 52.72  22.0w 13HV156   F51  C~1vWy      
2014 08  19.25285  16 20 13.973  -03 29 12.99  22.2w 13HV156   F51  C~1vWy      
2014 08  19.26483  16 20 13.986  -03 29 12.96  22.2w 13HV156   F51  C~1vWy      
2014 08  19.27684  16 20 13.996  -03 29 13.32  22.0w 13HV156   F51  C~1vWy      
2014 08  19.28886  16 20 14.010  -03 29 13.71  22.1w 13HV156   F51  C~1vWy      
2015 06  07.43005  16 27 35.737  -03 25 31.25  21.6i 13HV156   F51  C~1vWy      
2015 06  07.44167  16 27 35.659  -03 25 31.29  21.7i 13HV156   F51  C~1vWy      
2015 06  07.45327  16 27 35.631  -03 25 31.02  21.6i 13HV156   F51  C~1vWy      
2015 06  07.46488  16 27 35.580  -03 25 30.97  21.4i 13HV156   F51  C~1vWy      
2015 07  07.27153  16 25 43.354  -03 25 11.89  21.9w 13HV156   F51  C~1vWy      
2015 07  07.28220  16 25 43.321  -03 25 12.01  22.1w 13HV156   F51  C~1vWy      
2015 07  07.29278  16 25 43.288  -03 25 11.93  22.0w 13HV156   F51  C~1vWy      
2015 07  07.30347  16 25 43.255  -03 25 12.14  21.8w 13HV156   F51  C~1vWy      
2018 04  18.43346  16 43 40.943  -03 56 30.33  22.1R 13HV156   705              
2018 04  18.48135  16 43 40.792  -03 56 29.17        13HV156   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    -0.03       0.00    -0.00
  2   0.0000     -0.12    -0.10      -0.13    -0.13
  3   0.0000      0.03     0.17      -0.10    -0.07
  4  10.9955  40190.32    -0.03    6007.11     0.11
  5  10.9956  40189.51     0.07    6006.88     0.04
  6  10.9956  40188.39    -0.15    6006.67    -0.01
  7  10.9957  40187.59    -0.04    6006.47    -0.05
  8  11.8448  47544.39     0.16    6605.96    -0.16
  9  11.8448  47543.70     0.17    6606.17    -0.08
 10  11.8449  47543.04     0.24    6606.27    -0.12
 11  11.8449  47542.05    -0.05    6606.64     0.12
 12  11.9159  45969.54    -0.06    6748.86     0.03
 13  11.9160  45968.65    -0.06    6748.97     0.13
 14  11.9160  45967.78    -0.05    6749.05     0.21
 15  11.9160  45967.05     0.11    6748.80    -0.03
 16  12.0086  43793.63    -0.06    6536.71    -0.02
 17  12.0086  43792.25    -0.11    6536.33    -0.12
 18  12.0087  43791.51    -0.25    6536.39     0.07
 19  12.8932  50480.60    -0.07    7327.34     0.11
 20  12.8932  50479.87    -0.02    7327.19    -0.08
 21  12.8932  50479.08    -0.02    7327.28    -0.03
 22  12.8933  50478.21    -0.09    7327.31    -0.04
 23  12.9641  48767.42    -0.03    7285.61     0.01
 24  12.9642  48766.65    -0.05    7285.51    -0.02
 25  12.9642  48765.92    -0.02    7285.42    -0.02
 26  12.9642  48765.20     0.02    7285.27    -0.10
 27  13.1201  45956.32     0.02    6410.67    -0.10
 28  13.1201  45956.08     0.08    6410.77     0.26
 29  13.1201  45955.60    -0.11    6410.36     0.10
 30  13.1202  45955.54     0.13    6410.07     0.07
 31  13.1229  45933.19     0.11    6389.26     0.17
 32  13.1229  45932.84     0.03    6388.99     0.15
 33  13.1229  45932.63     0.10    6388.52    -0.05
 34  13.1230  45932.12    -0.14    6388.18    -0.14
 35  13.1746  45735.09    -0.04    5980.98     0.04
 36  13.1747  45735.33     0.20    5980.54    -0.13
 37  13.1747  45735.17     0.04    5980.26    -0.15
 38  13.1747  45735.07    -0.07    5980.34     0.19
 39  13.1774  45736.85    -0.31    5959.38    -0.04
 40  13.1774  45737.04    -0.13    5959.46     0.30
 41  13.1775  45737.28     0.09    5959.14     0.24
 42  13.1775  45737.59     0.38    5958.81     0.17
 43  13.9773  52473.87     0.25    7850.91    -0.07
 44  13.9774  52472.67    -0.17    7850.57    -0.30
 45  13.9774  52472.17     0.10    7850.73    -0.04
 46  13.9774  52471.37     0.07    7850.59    -0.08
 47  14.0590  50730.66    -0.13    7443.86     0.06
 48  14.0591  50730.18    -0.09    7443.62     0.01
 49  14.0591  50729.65    -0.10    7443.57     0.16
 50  14.0591  50729.19    -0.03    7443.24     0.02
 51  16.8411  68215.17     0.17    9656.68    -0.30
 52  16.8413  68212.43    -0.09    9657.29    -0.26

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.

13HV156    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        47.119    47.127    47.111
ecceobj         0.180     0.180     0.180
incobj         18.158    18.158    18.158
qmin           37.529    37.515    37.598
qmax           57.762    57.723    57.762
amean          47.422    47.433    47.415
amin           46.987    47.005    46.982
amax           48.008    48.000    47.952
emean           0.186     0.187     0.186
emin            0.169     0.168     0.168
emax            0.206     0.206     0.205
imean          17.449    17.444    17.456
imin           16.869    16.871    16.887
imax           18.023    18.067    18.022
excite_mean     0.353     0.353     0.353
fracstop        1.000     1.000     1.000
cjmean          2.988     2.988     2.988

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       182.2     184.5     181.5
kozaiamp        180.0     180.0     180.0