Orbit Fit and Astrometric record for 12UV177

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: 12UV177   
# Created Tue Oct 17 01:38:10 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   1.46y
# First observation: 2011/09/01
#  Last observation: 2013/02/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000013   0.039349  -0.000035  -0.008055   0.034401   0.000000
# Chi-squared of fit:     8.65 DOF:   54 RMS:  0.09
# Min/Max residuals:    -0.24    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.830991E-05  3.927646E-02 -2.736158E-06 -8.253340E-03  3.449813E-02 -1.833378E-03
# Covariance matrix:
  3.3490E-13  1.0280E-13  2.5739E-14 -1.3657E-13  3.1979E-13  9.9012E-12
  1.0280E-13  6.0177E-13  4.9927E-14 -2.5534E-13  5.1404E-13  1.8030E-11
  2.5739E-14  4.9927E-14  1.8218E-13 -1.8346E-13  5.4859E-14  2.3631E-12
 -1.3657E-13 -2.5534E-13 -1.8346E-13  3.4695E-13 -2.8767E-13 -1.1756E-11
  3.1979E-13  5.1404E-13  5.4859E-14 -2.8767E-13  6.4365E-13  2.0683E-11
  9.9012E-12  1.8030E-11  2.3631E-12 -1.1756E-11  2.0683E-11  8.1299E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   17.917141   31.095045    0.800592    0.187462   -0.579918  2455805.932666
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          289.97099 +/-     0.057
Argument of Peri:      200.12334 +/-     0.124
Long of Asc Node:      265.72062 +/-     0.001
Inclination:            20.81826 +/-     0.000
Eccentricity:         0.07349884 +/-    0.0007
Semi-Major Axis:     30.19176908 +/-    0.0037
Time of Perihelion: 2467587.5934 +/-       9.4
Perihelion:          27.97270921 +/-    0.0216
Aphelion:            32.41082896 +/-    0.0217
Period (y)              165.8980 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.55697527 +/-    0.0006
Ecliptic Y           13.87499794 +/-    0.0003
Ecliptic Z            8.91757553 +/-    0.0002
Ecliptic XDOT        -0.00155902 +/-    0.0000
Ecliptic YDOT         0.00270714 +/-    0.0000
Ecliptic ZDOT        -0.00066794 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.58181461 +/-    0.0005
Geocenter to KBO     28.98707888 +/-    0.0007
# Hcoef:  9.26

The following table shows the complete astrometric record for 12UV177. 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 (12UV177) followed by the observatory code and reference code for the source of the astrometry.

2011 09  01.43190  01 27 49.778  +28 32 13.61  24.2r 12UV177   568  C~1Cs0      
2011 09  01.47721  01 27 49.571  +28 32 13.90  23.9r 12UV177   568  C~1Cs0      
2011 09  01.51985  01 27 49.394  +28 32 14.09  24.3r 12UV177   568  C~1Cs0      
2011 09  05.45977  01 27 31.115  +28 32 14.72  23.6r 12UV177   568  C~1Cs0      
2011 11  24.31930  01 19 08.144  +27 45 03.29  23.7r 12UV177   568  C~1Cs0      
2011 11  24.33787  01 19 08.048  +27 45 02.24  23.6r 12UV177   568  C~1Cs0      
2011 11  26.43627  01 18 57.913  +27 43 05.11  23.8r 12UV177   568  C~1Cs0      
2011 11  29.32442  01 18 44.773  +27 40 24.09  23.7r 12UV177   568  C~1Cs0      
2011 12  01.34208  01 18 36.141  +27 38 32.01  24.0r 12UV177   568  C~1Cs0      
2012 01  28.28632  01 18 23.889  +26 57 43.63  24.3r 12UV177   568  C~1Cs0      
2012 02  24.23244  01 20 55.516  +26 54 06.91  23.9r 12UV177   568  C~1Cs0      
2012 08  23.57612  01 38 41.330  +28 56 04.34        12UV177   568  C~1Cs0      
2012 08  28.45900  01 38 24.300  +28 56 51.55  24.0r 12UV177   568  C~1Cs0      
2012 09  12.38956  01 37 15.614  +28 56 52.06  24.1r 12UV177   568  C~1Cs0      
2012 09  14.42586  01 37 04.493  +28 56 35.13  23.9r 12UV177   568  C~1Cs0      
2012 10  19.36449  01 33 14.264  +28 41 39.53  23.9r 12UV177   568  C~1Cs0      
2012 10  19.40727  01 33 13.958  +28 41 37.67  23.7r 12UV177   568  C~1Cs0      
2012 10  20.35652  01 33 07.214  +28 40 59.12  23.8r 12UV177   568  C~1Cs0      
2012 10  20.39499  01 33 06.942  +28 40 57.49  23.6r 12UV177   568  C~1Cs0      
2012 10  20.43389  01 33 06.660  +28 40 55.90  23.6r 12UV177   568  C~1Cs0      
2012 10  21.41799  01 32 59.679  +28 40 15.12  23.7r 12UV177   568  C~1Cs0      
2012 11  14.35891  01 30 19.275  +28 20 55.40  24.1r 12UV177   568  C~1Cs0      
2013 01  14.22823  01 27 43.631  +27 30 50.46  24.1r 12UV177   568  C~1Cs0      
2013 01  14.24065  01 27 43.664  +27 30 50.01  23.9r 12UV177   568  C~1Cs0      
2013 02  03.30644  01 28 46.418  +27 22 14.12  23.9r 12UV177   568  C~1Cs0      
2013 02  04.22689  01 28 50.640  +27 21 59.32  23.7r 12UV177   568  C~1Cs0      
2013 02  06.25798  01 29 00.358  +27 21 28.94        12UV177   568  C~1Cs0      
2013 02  09.25615  01 29 15.668  +27 20 51.11  24.1r 12UV177   568  C~1Cs0      
2013 02  14.25470  01 29 43.696  +27 20 07.68  23.7r 12UV177   568  C~1Cs0      
2013 02  16.22184  01 29 55.558  +27 19 57.02  23.7r 12UV177   568  C~1Cs0      

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    -0.06       0.00    -0.22
  2   0.0001     -2.40    -0.02       1.32    -0.05
  3   0.0002     -4.48     0.23       2.40    -0.06
  4   0.0110   -226.23    -0.08      96.45    -0.09
  5   0.2297  -7459.24    -0.03     133.27     0.06
  6   0.2297  -7460.83    -0.06     132.82     0.06
  7   0.2355  -7631.48    -0.06      80.06     0.06
  8   0.2434  -7856.55    -0.03       3.39     0.04
  9   0.2489  -8007.02     0.06     -52.68     0.11
 10   0.4075  -9150.73    -0.06   -2226.96    -0.03
 11   0.4813  -7379.51     0.15   -3242.94     0.08
 12   0.9778   8481.05     0.15   -1908.79     0.11
 13   0.9912   8290.07     0.06   -1782.70     0.18
 14   1.0321   7450.76    -0.11   -1449.80     0.08
 15   1.0376   7308.68    -0.24   -1411.53     0.14
 16   1.1333   4164.86     0.06   -1111.68     0.03
 17   1.1334   4160.43     0.06   -1111.88    -0.12
 18   1.1360   4063.66    -0.04   -1114.09     0.05
 19   1.1361   4059.73     0.01   -1114.24    -0.04
 20   1.1362   4055.69     0.01   -1114.32    -0.03
 21   1.1389   3955.19    -0.04   -1117.38     0.01
 22   1.2045   1558.22    -0.05   -1385.68    -0.12
 23   1.3711  -1503.60    -0.06   -3363.67     0.07
 24   1.3711  -1503.37     0.10   -3364.26    -0.02
 25   1.4261   -932.59     0.02   -4163.46    -0.05
 26   1.4286   -886.41     0.02   -4198.82     0.11
 27   1.4342   -778.65     0.15   -4276.81    -0.03
 28   1.4424   -604.97     0.03   -4390.35    -0.24
 29   1.4561   -276.86    -0.05   -4574.14    -0.02
 30   1.4614   -134.97    -0.11   -4644.71    -0.07

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.

12UV177    quality flag:3

Type:            1:1       1:1       1:1

axisobj        30.227    30.232    30.221
ecceobj         0.072     0.074     0.071
incobj         20.823    20.823    20.823
qmin           27.510    27.490    27.549
qmax           32.900    32.904    32.813
amean          30.109    30.109    30.109
amin           29.827    29.842    29.837
amax           30.420    30.391    30.405
emean           0.060     0.061     0.059
emin            0.039     0.039     0.038
emax            0.083     0.084     0.082
imean          22.302    22.307    22.309
imin           22.114    22.097    22.116
imax           22.494    22.525    22.503
excite_mean     0.384     0.385     0.384
fracstop        1.000     1.000     1.000
cjmean          2.846     2.846     2.846

libcent 0        61.2      60.9      60.9
libamp  0        17.1      14.8      16.4
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       178.5     178.3     178.5
kozaiamp        180.0     180.0     179.9