Orbit Fit and Astrometric record for 05VZ122

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: 05VZ122   
# Created Mon Oct 23 01:37:38 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   23
# Arc:   9.29y
# First observation: 2005/11/02
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000170   0.033632  -0.000045  -0.006723   0.029869   0.000000
# Chi-squared of fit:    31.11 DOF:   38 RMS:  0.21
# Min/Max residuals:    -0.56    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.889885E-05  3.420031E-02 -3.672886E-06 -6.836508E-03  3.004258E-02  2.272573E-03
# Covariance matrix:
  2.4194E-13 -2.0273E-13 -3.3316E-14  4.4419E-14  1.6768E-13 -7.5573E-13
 -2.0273E-13  2.6032E-13  4.4594E-14 -5.9687E-14 -1.9684E-13  1.0095E-12
 -3.3316E-14  4.4594E-14  1.1083E-13 -2.6970E-14 -4.0643E-14  1.8107E-13
  4.4419E-14 -5.9687E-14 -2.6970E-14  2.1717E-14  5.2033E-14 -2.4116E-13
  1.6768E-13 -1.9684E-13 -4.0643E-14  5.2033E-14  4.5995E-13 -9.4047E-13
 -7.5573E-13  1.0095E-12  1.8107E-13 -2.4116E-13 -9.4047E-13  4.1093E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.339785   62.735414    0.387986   -0.069345   -0.915264  2453676.799423
# Heliocentric elements and errors
Epoch:              2453670.5000  =  2005/10/27
Mean Anomaly:           13.99202 +/-     0.009
Argument of Peri:      180.31223 +/-     0.013
Long of Asc Node:      221.98215 +/-     0.000
Inclination:            12.12444 +/-     0.000
Eccentricity:         0.17648030 +/-    0.0001
Semi-Major Axis:     41.14544538 +/-    0.0063
Time of Perihelion: 2449923.7140 +/-       2.2
Perihelion:          33.88408487 +/-    0.0072
Aphelion:            48.40680589 +/-    0.0089
Period (y)              263.9313 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.96542069 +/-    0.0004
Ecliptic Y           30.13981735 +/-    0.0007
Ecliptic Z           -2.51891345 +/-    0.0001
Ecliptic XDOT        -0.00269523 +/-    0.0000
Ecliptic YDOT         0.00156300 +/-    0.0000
Ecliptic ZDOT        -0.00063690 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.20011948 +/-    0.0006
Geocenter to KBO     33.28608712 +/-    0.0008
# Hcoef:  7.34

The following table shows the complete astrometric record for 05VZ122. 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 (05VZ122) followed by the observatory code and reference code for the source of the astrometry.

2005 11  02.29868  04 06 13.79   +16 26 52.5   22.0R 05VZ122   695  Cq2844      
2005 11  02.35542  04 06 13.49   +16 26 51.2         05VZ122   695  Cq2844      
2005 11  02.41213  04 06 13.18   +16 26 50.0         05VZ122   695  Cq2844      
2005 12  01.23019  04 03 24.89   +16 16 32.1   22.3R 05VZ122   695  Cq2844      
2005 12  01.28678  04 03 24.52   +16 16 31.1         05VZ122   695  Cq2844      
2005 12  01.34562  04 03 24.18   +16 16 30.1         05VZ122   695  Cq2844      
2005 12  30.15429  04 00 48.29   +16 08 37.6   23.0R 05VZ122   688  Cq2844      
2005 12  30.23507  04 00 47.81   +16 08 36.8         05VZ122   688  Cq2844      
2006 10  19.40260  04 15 40.16   +16 30 24.2   22.3R 05VZ122   695  Ct0518      
2006 10  19.47909  04 15 39.85   +16 30 23.0         05VZ122   695  Ct0518      
2006 10  20.40715  04 15 35.81   +16 30 03.7         05VZ122   695  Ct0518      
2006 10  23.469439 04 15 22.02   +16 29 00.2   22.9V 05VZ122   645  C~1ReI      
2006 10  23.470268 04 15 22.01   +16 29 00.2   22.1V 05VZ122   645  C~1ReI      
2006 10  23.472756 04 15 22.00   +16 29 00.2   22.7V 05VZ122   645  C~1ReI      
2006 12  21.19150  04 09 50.79   +16 10 02.6   22.3R 05VZ122   695  Ct5542      
2006 12  21.26407  04 09 50.40   +16 10 01.4         05VZ122   695  Ct5542      
2008 09  25.91490  04 33 09.96   +16 30 31.3   23.1R 05VZ122   250  S~06Ay      
2008 09  25.92185  04 33 09.95   +16 30 31.2         05VZ122   250  S~06Ay      
2008 09  25.92810  04 33 09.94   +16 30 31.1         05VZ122   250  S~06Ay      
2008 09  25.93504  04 33 09.93   +16 30 31.0         05VZ122   250  S~06Ay      
2015 02  18.12505  05 10 49.77   +15 23 50.2   22.5R 05VZ122   695  C~1M6H      
2015 02  18.16988  05 10 49.71   +15 23 50.5         05VZ122   695  C~1M6H      
2015 02  18.21704  05 10 49.65   +15 23 51.0         05VZ122   695  C~1M6H      

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    -0.19       0.00     0.02
  2   0.0002     -4.48    -0.03      -0.46    -0.07
  3   0.0003     -9.09     0.00      -0.79    -0.02
  4   0.0792  -2504.87     0.36    -142.90    -0.08
  5   0.0794  -2510.29     0.00    -142.85     0.12
  6   0.0795  -2515.28     0.27    -142.89     0.24
  7   0.1584  -4810.46 (   0.87)   -168.57 (  -0.14)
  8   0.1586  -4817.40    -0.56    -168.00     0.33
  9   0.9613   8050.31    -0.18   -1293.71     0.06
 10   0.9615   8045.71     0.25   -1294.09     0.34
 11   0.9640   7985.00    -0.05   -1302.71     0.01
 12   0.9724   7778.20    -0.01   -1329.73    -0.46
 13   0.9724   7778.06    -0.10   -1329.70    -0.43
 14   0.9724   7777.92    -0.06   -1329.68    -0.38
 15   1.1332   2879.01     0.14   -1578.80    -0.15
 16   1.1334   2873.27     0.16   -1578.94    -0.32
 17   2.8983  23028.37    -0.01   -3836.23     0.23
 18   2.8984  23028.21     0.00   -3836.31     0.24
 19   2.8984  23028.05     0.00   -3836.39     0.24
 20   2.8984  23027.90     0.02   -3836.46     0.25
 21   9.2945  56064.89     0.00  -12499.28    -0.05
 22   9.2947  56064.00    -0.03  -12498.86    -0.11
 23   9.2948  56063.13     0.00  -12498.24     0.01

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.

05VZ122    quality flag:2

Type:         8:5EEE    8:5EEE  SCATNEAR

axisobj        41.684    41.704    41.665
ecceobj         0.187     0.188     0.187
incobj         12.068    12.068    12.068
qmin           33.541    32.538    32.740
qmax           49.487    50.339    50.197
amean          41.190    41.190    41.190
amin           40.740    40.697    40.750
amax           41.684    41.704    41.675
emean           0.155     0.178     0.169
emin            0.132     0.142     0.115
emax            0.187     0.209     0.205
imean          14.492    13.898    14.077
imin           12.789    12.181    11.836
imax           15.833    15.611    15.942
excite_mean     0.295     0.299     0.297
fracstop        1.000     1.000     1.000
cjmean          2.967     2.965     2.965

libcent 0       179.5     183.8    -180.0
libamp  0       171.4     169.6    -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       193.3     187.2     182.2
kozaiamp        180.0     180.0     180.0