Orbit Fit and Astrometric record for 10VW224

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: 10VW224   
# Created Mon Oct 23 01:37:56 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   26
# Arc:   2.98y
# First observation: 2010/11/09
#  Last observation: 2013/11/01
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.016758   0.000003   0.002148   0.020468   0.000000
# Chi-squared of fit:    15.61 DOF:   44 RMS:  0.14
# Min/Max residuals:    -0.39    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.257587E-05  1.677398E-02  1.774133E-06  2.157269E-03  2.044808E-02  2.523278E-04
# Covariance matrix:
  1.5259E-13 -1.8561E-13  3.2586E-15 -1.4072E-14 -1.4028E-13 -2.7503E-12
 -1.8561E-13  6.3912E-13 -1.5692E-14  6.7808E-14  7.1618E-13  1.3302E-11
  3.2586E-15 -1.5692E-14  1.2958E-13 -7.2371E-14 -1.6400E-14 -4.0316E-13
 -1.4072E-14  6.7808E-14 -7.2371E-14  7.9364E-14  7.1294E-14  1.7376E-12
 -1.4028E-13  7.1618E-13 -1.6400E-14  7.1294E-14  1.1176E-12  1.4425E-11
 -2.7503E-12  1.3302E-11 -4.0316E-13  1.7376E-12  1.4425E-11  3.3613E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.201176   68.019804    0.353171   -0.083686   -0.919424  2455510.037276
# Heliocentric elements and errors
Epoch:              2455510.5000  =  2010/11/10
Mean Anomaly:          174.95376 +/-     0.394
Argument of Peri:      148.75535 +/-     0.396
Long of Asc Node:      102.41228 +/-     0.003
Inclination:             8.89494 +/-     0.001
Eccentricity:         0.13474209 +/-    0.0001
Semi-Major Axis:     43.92500990 +/-    0.0045
Time of Perihelion: 2510167.2752 +/-     116.1
Perihelion:          38.00646217 +/-    0.0060
Aphelion:            49.84355764 +/-    0.0068
Period (y)              291.1227 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.90553456 +/-    0.0009
Ecliptic Y           45.88605154 +/-    0.0023
Ecliptic Z           -4.43326293 +/-    0.0002
Ecliptic XDOT        -0.00206053 +/-    0.0000
Ecliptic YDOT         0.00090242 +/-    0.0000
Ecliptic ZDOT         0.00028459 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.82572411 +/-    0.0022
Geocenter to KBO     48.90434259 +/-    0.0025
# Hcoef:  5.67

The following table shows the complete astrometric record for 10VW224. 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 (10VW224) followed by the observatory code and reference code for the source of the astrometry.

2010 11  09.53651  04 28 29.240  +16 30 33.86  22.9w 10VW224   F51  C~1w3l      
2010 11  09.53722  04 28 29.237  +16 30 33.87  22.8w 10VW224   F51  C~1w3l      
2010 11  09.55473  04 28 29.168  +16 30 33.58  22.8w 10VW224   F51  C~1w3l      
2010 11  09.57296  04 28 29.079  +16 30 33.42  22.9w 10VW224   F51  C~1w3l      
2010 11  09.57363  04 28 29.074  +16 30 33.32  23.2w 10VW224   F51  C~1w3l      
2010 11  09.59112  04 28 29.010  +16 30 33.43  22.6w 10VW224   F51  C~1w3l      
2010 11  09.59178  04 28 28.977  +16 30 33.50  23.0w 10VW224   F51  C~1w3l      
2010 11  11.53913  04 28 21.059  +16 30 13.61  22.3r 10VW224   F51  C~1w3l      
2010 11  17.50522  04 27 55.998  +16 29 13.33  21.7i 10VW224   F51  C~1w3l      
2010 11  17.50588  04 27 55.999  +16 29 13.95  22.0i 10VW224   F51  C~1w3l      
2011 10  26.42469  04 33 16.442  +16 49 06.39  22.9w 10VW224   F51  C~1w3l      
2011 10  26.43920  04 33 16.409  +16 49 06.02  23.0w 10VW224   F51  C~1w3l      
2011 10  26.45377  04 33 16.350  +16 49 06.04  22.7w 10VW224   F51  C~1w3l      
2011 10  26.46833  04 33 16.320  +16 49 05.60  22.8w 10VW224   F51  C~1w3l      
2011 11  24.54957  04 31 20.317  +16 44 23.23  22.3r 10VW224   F51  C~1w3l      
2011 11  24.56131  04 31 20.262  +16 44 23.17  22.6r 10VW224   F51  C~1w3l      
2011 11  30.31572  04 30 54.897  +16 43 32.22  22.1i 10VW224   F51  C~1w3l      
2011 11  30.32831  04 30 54.841  +16 43 32.21  22.2i 10VW224   F51  C~1w3l      
2011 12  01.52335  04 30 49.543  +16 43 22.02  22.2r 10VW224   F51  C~1w3l      
2012 11  25.35298  04 35 08.046  +17 00 08.81  21.5i 10VW224   F51  C~1w3l      
2013 01  07.24229  04 32 10.512  +16 55 58.06  22.2w 10VW224   F51  C~1w3l      
2013 01  07.25996  04 32 10.459  +16 55 58.02  22.3w 10VW224   F51  C~1w3l      
2013 01  07.27696  04 32 10.383  +16 55 58.08  22.4w 10VW224   F51  C~1w3l      
2013 01  07.29299  04 32 10.356  +16 55 58.18  22.2w 10VW224   F51  C~1w3l      
2013 02  10.33786  04 30 53.619  +16 56 46.24  21.7g 10VW224   F51  C~1w3l      
2013 11  01.59016  04 40 41.651  +17 19 22.89  21.7r 10VW224   F51  C~1w3l      

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     0.08       0.00    -0.02
  2   0.0000     -0.04     0.08       0.02    -0.00
  3   0.0000     -1.07     0.11      -0.12    -0.12
  4   0.0001     -2.36    -0.08      -0.08    -0.06
  5   0.0001     -2.44    -0.13      -0.16    -0.15
  6   0.0001     -3.33     0.03       0.09     0.13
  7   0.0002     -3.79    -0.39       0.23     0.27
  8   0.0055   -119.38     0.20      -1.72     0.21
  9   0.0218   -484.81     0.12      -5.15     0.01
 10   0.0218   -484.70 (   0.28)     -4.53 (   0.63)
 11   0.9607   4249.01    -0.08     470.91     0.14
 12   0.9607   4248.49     0.13     470.62    -0.12
 13   0.9608   4247.65     0.03     470.76     0.06
 14   0.9608   4247.16     0.27     470.39    -0.28
 15   1.0404   2557.20    -0.03     442.05    -0.01
 16   1.0405   2556.41    -0.07     442.11     0.04
 17   1.0562   2188.49    -0.15     447.14    -0.13
 18   1.0562   2187.69    -0.13     447.25    -0.03
 19   1.0595   2110.91    -0.05     448.78    -0.10
 20   2.0447   5932.23    -0.16     888.86     0.09
 21   2.1621   3374.84    -0.08    1019.98    -0.13
 22   2.1621   3374.08     0.04    1020.06    -0.15
 23   2.1622   3373.01    -0.19    1020.28    -0.02
 24   2.1622   3372.64     0.24    1020.44     0.05
 25   2.2554   2291.31     0.17    1234.75     0.20
 26   2.9789  10838.03     0.00    1345.85     0.10

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.

10VW224    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        44.110    44.123    44.097
ecceobj         0.131     0.130     0.131
incobj          8.883     8.883     8.882
qmin           35.350    35.145    36.795
qmax           52.801    53.006    51.109
amean          43.775    43.734    43.732
amin           43.206    43.205    43.278
amax           44.293    44.294    44.269
emean           0.147     0.156     0.128
emin            0.095     0.113     0.102
emax            0.193     0.197     0.156
imean           6.880     7.393     7.085
imin            5.069     5.699     5.757
imax            8.703     9.337     8.332
excite_mean     0.191     0.202     0.178
fracstop        1.000     1.000     1.000
cjmean          3.055     3.049     3.061

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       182.9     179.4     179.4
kozaiamp        180.0     180.0     180.0