Orbit Fit and Astrometric record for 16PA101

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: 16PA101   
# Created Thu Feb 21 02:10:30 2019
# Orbit generated from Bernstein formalism
# Fitting   48 observations of   51
# Arc:   1.41y
# First observation: 2016/08/14
#  Last observation: 2018/01/11
Preliminary a, adot, b, bdot, g, gdot:
  -0.000029   0.027679  -0.000003   0.004956   0.026771   0.000000
# Chi-squared of fit:    44.28 DOF:   90 RMS:  0.17
# Min/Max residuals:    -0.45    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.774864E-05  2.740022E-02  1.366563E-06  4.919082E-03  2.655762E-02 -1.252178E-03
# Covariance matrix:
  2.2981E-13  1.6174E-13  2.1193E-14  5.2023E-14  3.4339E-13  1.2963E-11
  1.6174E-13  1.4185E-12  9.3596E-14  2.1664E-13  1.4858E-12  5.3409E-11
  2.1193E-14  9.3596E-14  1.6526E-13 -1.1959E-13  1.0946E-13  3.7923E-12
  5.2023E-14  2.1664E-13 -1.1959E-13  1.8006E-13  2.5077E-13  9.4191E-12
  3.4339E-13  1.4858E-12  1.0946E-13  2.5077E-13  1.7316E-12  6.1705E-11
  1.2963E-11  5.3409E-11  3.7923E-12  9.4191E-12  6.1705E-11  2.3519E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -18.273089   31.837642    0.952023   -0.109266   -0.331438  2457614.805760
# Heliocentric elements and errors
Epoch:              2457610.5000  =  2016/08/10
Mean Anomaly:          312.06374 +/-     0.494
Argument of Peri:      353.40098 +/-     0.676
Long of Asc Node:       91.41642 +/-     0.003
Inclination:            20.47956 +/-     0.001
Eccentricity:         0.08876028 +/-    0.0015
Semi-Major Axis:     40.19318514 +/-    0.0121
Time of Perihelion: 2470003.8506 +/-     127.6
Perihelion:          36.62562686 +/-    0.0617
Aphelion:            43.76074342 +/-    0.0622
Period (y)              254.8220 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.17037170 +/-    0.0015
Ecliptic Y           18.23426978 +/-    0.0009
Ecliptic Z          -11.80622884 +/-    0.0006
Ecliptic XDOT        -0.00145771 +/-    0.0000
Ecliptic YDOT         0.00241196 +/-    0.0000
Ecliptic ZDOT         0.00052199 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.99299549 +/-    0.0013
Geocenter to KBO     37.65398312 +/-    0.0019
# Hcoef:  8.67

The following table shows the complete astrometric record for 16PA101. 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 (16PA101) followed by the observatory code and reference code for the source of the astrometry.

2016 08  14.304971 02 23 39.83   -05 04 22.1   23.8z 16PA101   W84  C~2b7z      
2016 08  25.360041 02 23 28.22   -05 10 01.8   23.9z 16PA101   W84  C~2b7z      
2016 08  26.263806 02 23 26.76   -05 10 31.0   23.9i 16PA101   W84  C~2b7z      
2016 08  31.262217 02 23 17.31   -05 13 17.0   24.8g 16PA101   W84  C~2b7z      
2016 08  31.301557 02 23 17.22   -05 13 18.1   24.0r 16PA101   W84  C~2b7z      
2016 08  31.333039 02 23 17.15   -05 13 19.1   24.0z 16PA101   W84  C~2b7z      
2016 09  02.250601 02 23 12.91   -05 14 23.9   23.8i 16PA101   W84  C~2b7z      
2016 09  26.239705 02 21 54.74   -05 28 12.6   23.8r 16PA101   W84  C~2b7z      
2016 09  26.242055 02 21 54.72   -05 28 12.8   23.6i 16PA101   W84  C~2b7z      
2016 11  26.059647 02 16 58.15   -05 50 14.4   23.8r 16PA101   W84  C~2b7z      
2016 11  30.053154 02 16 40.67   -05 50 21.2   23.7r 16PA101   W84  C~2b7z      
2017 08  17.374372 02 29 10.43   -04 17 46.4   23.8z 16PA101   W84  C~2b7z      
2017 08  17.405716 02 29 10.42   -04 17 47.2   23.9r 16PA101   W84  C~2b7z      
2017 08  18.283969 02 29 09.81   -04 18 12.8   23.9i 16PA101   W84  C~2b7z      
2017 08  24.398883 02 29 03.44   -04 21 17.0   24.3g 16PA101   W84  C~2b7z      
2017 08  24.415295 02 29 03.41   -04 21 17.3   23.7i 16PA101   W84  C~2b7z      
2017 08  25.363711 02 29 02.10   -04 21 47.0   24.1z 16PA101   W84  C~2b7z      
2017 08  29.265572 02 28 55.83   -04 23 51.1   23.9r 16PA101   W84  C~2b7z      
2017 08  29.367641 02 28 55.66   -04 23 54.0   23.7z 16PA101   W84  C~2b7z      
2017 09  07.242427 02 28 36.09   -04 28 47.6   23.9z 16PA101   W84  C~2b7z      
2017 09  14.204861 02 28 16.04   -04 32 44.1   24.7g 16PA101   W84  C~2b7z      
2017 09  14.217344 02 28 16.00   -04 32 44.6   24.0r 16PA101   W84  C~2b7z      
2017 09  23.245036 02 27 44.37   -04 37 53.0   24.1z 16PA101   W84  C~2b7z      
2017 09  23.298315 02 27 44.19   -04 37 54.8   24.7g 16PA101   W84  C~2b7z      
2017 09  23.310902 02 27 44.13   -04 37 55.1   24.0r 16PA101   W84  C~2b7z      
2017 10  02.287746 02 27 07.19   -04 42 53.8   23.9i 16PA101   W84  C~2b7z      
2017 10  10.143176 02 26 31.31   -04 47 01.7   23.6r 16PA101   W84  C~2b7z      
2017 10  10.251809 02 26 30.78   -04 47 05.2   23.9i 16PA101   W84  C~2b7z      
2017 10  13.217881 02 26 16.55   -04 48 33.9   24.5g 16PA101   W84  C~2b7z      
2017 10  14.168629 02 26 11.90   -04 49 01.9   24.0r 16PA101   W84  C~2b7z      
2017 10  14.199558 02 26 11.73   -04 49 03.0   23.9i 16PA101   W84  C~2b7z      
2017 10  17.284208 02 25 56.47   -04 50 30.9   24.4g 16PA101   W84  C~2b7z      
2017 10  26.238548 02 25 10.80   -04 54 23.5   24.0r 16PA101   W84  C~2b7z      
2017 10  26.258431 02 25 10.70   -04 54 23.9   24.0i 16PA101   W84  C~2b7z      
2017 11  07.129250 02 24 09.14   -04 58 29.3   23.9i 16PA101   W84  C~2b7z      
2017 11  14.085219 02 23 33.62   -05 00 13.8   24.7g 16PA101   W84  C~2b7z      
2017 11  14.097765 02 23 33.56   -05 00 14.2   23.9r 16PA101   W84  C~2b7z      
2017 11  14.117634 02 23 33.45   -05 00 14.6   24.1i 16PA101   W84  C~2b7z      
2017 11  14.152935 02 23 33.32   -05 00 14.7   24.2z 16PA101   W84  C~2b7z      
2017 11  19.170514 02 23 08.44   -05 01 10.2   24.3g 16PA101   W84  C~2b7z      
2017 11  19.188985 02 23 08.33   -05 01 10.5   24.1r 16PA101   W84  C~2b7z      
2017 11  19.222611 02 23 08.16   -05 01 10.9   23.7i 16PA101   W84  C~2b7z      
2017 11  25.104830 02 22 40.21   -05 01 53.5   23.9r 16PA101   W84  C~2b7z      
2017 11  25.124650 02 22 40.13   -05 01 53.4   23.9i 16PA101   W84  C~2b7z      
2017 11  29.130957 02 22 22.00   -05 02 08.0   24.2i 16PA101   W84  C~2b7z      
2017 12  14.046800 02 21 22.97   -05 01 16.9   23.9r 16PA101   W84  C~2b80      
2017 12  22.048258 02 20 58.07   -04 59 40.7   23.4i 16PA101   W84  C~2b80      
2017 12  22.052252 02 20 58.04   -04 59 40.7   23.5z 16PA101   W84  C~2b80      
2017 12  26.059103 02 20 47.59   -04 58 34.8   23.3z 16PA101   W84  C~2b80      
2018 01  11.046025 02 20 21.02   -04 52 19.8   23.8r 16PA101   W84  C~2b80      
2018 01  11.048386 02 20 21.01   -04 52 19.6   23.5i 16PA101   W84  C~2b80      

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    -0.30       0.00     0.32
  2   0.0303   -278.40     0.07    -260.72    -0.01
  3   0.0327   -308.83     0.05    -280.79     0.11
  4   0.0464   -497.93     0.03    -389.07    -0.45
  5   0.0465   -499.57     0.05    -389.65    -0.22
  6   0.0466   -500.89     0.07    -390.24    -0.16
  7   0.0519   -582.45     0.03    -429.72    -0.16
  8   0.1175  -1961.68     0.21    -813.84     0.38
  9   0.1176  -1962.03     0.03    -813.93     0.32
 10   0.2841  -6577.38    -0.24    -563.35    -0.08
 11   0.2950  -6825.55 (  -0.09)   -481.92 (   0.60)
 12   1.0077   5600.12    -0.26     947.73     0.16
 13   1.0078   5599.70    -0.04     947.03     0.19
 14   1.0102   5582.38    -0.15     926.07     0.05
 15   1.0270   5429.87    -0.04     785.35    -0.16
 16   1.0270   5429.34    -0.06     785.23     0.07
 17   1.0296   5400.78    -0.14     763.98    -0.07
 18   1.0403   5270.21    -0.01     679.27    -0.30
 19   1.0406   5266.82     0.43     677.41    -0.05
 20   1.0649   4891.34    -0.21     501.14    -0.13
 21   1.0839   4528.67    -0.15     380.97     0.11
 22   1.0839   4527.94    -0.17     380.70     0.04
 23   1.1087   3977.99    -0.09     251.88    -0.07
 24   1.1088   3974.84     0.31     251.10    -0.21
 25   1.1088   3973.90     0.21     251.12    -0.04
 26   1.1334   3352.73     0.05     158.34     0.23
 27   1.1549   2763.89    -0.04     107.79     0.19
 28   1.1552   2755.25    -0.17     107.20     0.04
 29   1.1633   2525.02     0.35      96.15    -0.00
 30   1.1660   2450.13     0.14      93.47    -0.09
 31   1.1660   2447.36    -0.15      93.30    -0.20
 32   1.1745   2202.95     0.15      88.21    -0.18
 33   1.1990   1481.89    -0.10     101.49     0.05
 34   1.1991   1480.35    -0.01     101.62     0.10
 35   1.2316    531.70     0.28     183.24    -0.10
 36   1.2506     -3.05     0.00     265.05     0.28
 37   1.2506     -4.03    -0.02     264.98     0.03
 38   1.2507     -5.72    -0.19     265.16    -0.06
 39   1.2508     -7.58 (   0.64)    265.73 (   0.01)
 40   1.2645   -376.14     0.37     339.60     0.12
 41   1.2646   -377.79     0.06     339.88     0.10
 42   1.2647   -380.31    -0.02     340.36     0.03
 43   1.2808   -787.67    -0.15     441.86    -0.12
 44   1.2808   -788.76     0.10     442.36     0.00
 45   1.2918  -1048.59    -0.06     520.42    -0.06
 46   1.3326  -1861.27    -0.05     867.19     0.09
 47   1.3545  -2178.89 (   0.57)   1083.64 (  -0.14)
 48   1.3545  -2179.31     0.29    1083.79    -0.10
 49   1.3655  -2303.99    -0.04    1198.64    -0.09
 50   1.4093  -2550.93    -0.19    1685.89    -0.02
 51   1.4093  -2551.01    -0.26    1686.13     0.14

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.

16PA101    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.673    40.688    40.659
ecceobj         0.094     0.097     0.091
incobj         20.470    20.471    20.469
qmin           35.944    36.079    35.595
qmax           45.140    45.004    45.513
amean          40.424    40.424    40.424
amin           40.083    40.092    40.068
amax           40.768    40.772    40.787
emean           0.094     0.094     0.096
emin            0.082     0.082     0.079
emax            0.108     0.104     0.116
imean          18.558    18.588    18.532
imin           17.745    17.821    17.654
imax           19.435    19.461    19.434
excite_mean     0.332     0.332     0.332
fracstop        1.000     1.000     1.000
cjmean          2.932     2.932     2.932

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       174.9     176.6     174.3
kozaiamp        179.9     180.0     180.0