Orbit Fit and Astrometric record for 03YQ179

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: 03YQ179   
# Created Thu Jun 30 01:37:31 2016
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   36
# Arc:  12.22y
# First observation: 2003/12/24
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.004428   0.032387  -0.001541   0.012415   0.022915   0.000000
# Chi-squared of fit:    46.23 DOF:   58 RMS:  0.21
# Min/Max residuals:    -0.61    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.785654E-05  2.998443E-02  6.158713E-06  1.141604E-02  2.608952E-02 -6.076891E-03
# Covariance matrix:
  1.4760E-13 -5.0380E-14  2.0911E-14 -1.5500E-14  5.1857E-14 -1.1434E-13
 -5.0380E-14  2.9561E-14 -1.4007E-14  1.0446E-14 -1.6435E-14  7.6229E-14
  2.0911E-14 -1.4007E-14  9.3146E-14 -1.8992E-14  1.0323E-14 -4.2290E-14
 -1.5500E-14  1.0446E-14 -1.8992E-14  8.5641E-15 -7.3539E-15  3.1510E-14
  5.1857E-14 -1.6435E-14  1.0323E-14 -7.3539E-15  1.1150E-13 -5.8158E-14
 -1.1434E-13  7.6229E-14 -4.2290E-14  3.1510E-14 -5.8158E-14  2.3032E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.032639  110.155428    0.306077   -0.000462   -0.931652  2452997.959983
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:          353.31569 +/-     0.002
Argument of Peri:       30.43286 +/-     0.004
Long of Asc Node:      109.79583 +/-     0.000
Inclination:            20.83910 +/-     0.000
Eccentricity:         0.58651490 +/-    0.0001
Semi-Major Axis:     90.09969142 +/-    0.0140
Time of Perihelion: 2458790.6272 +/-       0.6
Perihelion:          37.25487955 +/-    0.0077
Aphelion:           142.94450329 +/-    0.0227
Period (y)              855.2501 +/-      0.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -13.24486011 +/-    0.0002
Ecliptic Y           36.96502587 +/-    0.0005
Ecliptic Z           -0.02160786 +/-    0.0000
Ecliptic XDOT        -0.00273864 +/-    0.0000
Ecliptic YDOT        -0.00168855 +/-    0.0000
Ecliptic ZDOT         0.00119852 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.26626955 +/-    0.0004
Geocenter to KBO     38.32956625 +/-    0.0005
# Hcoef:  7.09

The following table shows the complete astrometric record for 03YQ179. 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 (03YQ179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  24.45924  07 27 11.77   +21 53 39.4   23.0g 03YQ179   568  Cq9908      
2003 12  24.46065  07 27 11.77   +21 53 39.3   22.8g 03YQ179   568  Cq9908      
2003 12  24.48237  07 27 11.65   +21 53 39.8   23.0g 03YQ179   568  Cq9908      
2003 12  24.48381  07 27 11.68   +21 53 40.3   22.6g 03YQ179   568  Cq9908      
2003 12  24.50560  07 27 11.54   +21 53 40.3   23.1g 03YQ179   568  Cq9908      
2003 12  24.50702  07 27 11.51   +21 53 39.9   23.4g 03YQ179   568  Cq9908      
2003 12  25.50067  07 27 06.42   +21 53 57.2   22.9g 03YQ179   568  Cq9908      
2004 02  20.11144  07 22 23.65   +22 09 36.4         03YQ179   695  Cq9908      
2004 04  15.15273  07 21 24.80   +22 17 15.2         03YQ179   675  Cq9908      
2004 04  15.20821  07 21 24.89   +22 17 15.5         03YQ179   675  Cq9908      
2004 04  16.19489  07 21 26.79   +22 17 17.5         03YQ179   675  Cq9908      
2005 01  08.34713  07 33 38.38   +22 21 31.9   22.8r 03YQ179   568  Cq9908      
2005 01  08.38499  07 33 38.18   +22 21 32.6   22.6r 03YQ179   568  Cq9908      
2005 01  08.42277  07 33 37.97   +22 21 33.3   22.8r 03YQ179   568  Cq9908      
2005 01  15.37010  07 33 00.08   +22 23 42.8         03YQ179   568  Cq9908      
2006 01  28.29527  07 39 49.00   +22 50 04.6   23. R 03YQ179   675  Cq9908      
2006 01  28.42959  07 39 48.27   +22 50 06.9         03YQ179   675  Cq9908      
2007 02  14.24568  07 46 29.72   +23 16 24.7         03YQ179   695  Cy4658      
2007 02  16.30278  07 46 20.40   +23 16 59.0         03YQ179   695  Cy4658      
2007 02  16.39829  07 46 20.00   +23 17 00.6         03YQ179   695  Cy4658      
2007 11  08.40387  08 01 31.79   +23 04 19.5         03YQ179   695  Cy4004      
2007 11  09.39987  08 01 31.01   +23 04 32.3         03YQ179   695  Cy4004      
2008 03  03.16918  07 53 27.45   +23 41 03.9         03YQ179   695  Cy7592      
2008 03  03.21523  07 53 27.29   +23 41 04.1         03YQ179   695  Cy7592      
2008 10  22.49732  08 09 35.09   +23 18 30.4   22.4r 03YQ179   695  C~0gM8      
2008 10  23.50357  08 09 36.39   +23 18 38.6   22.4r 03YQ179   695  C~0gM8      
2008 10  24.52108  08 09 37.56   +23 18 47.1   22.2r 03YQ179   695  C~0gM8      
2008 11  11.87666  08 09 38.73   +23 22 22.5   25.1R 03YQ179   250  S~06Ah      
2008 11  11.88291  08 09 38.72   +23 22 22.7         03YQ179   250  S~06Ah      
2008 11  11.88985  08 09 38.71   +23 22 22.8         03YQ179   250  S~06Ah      
2008 11  11.89610  08 09 38.71   +23 22 22.9         03YQ179   250  S~06Ah      
2011 01  07.35122  08 23 18.46   +24 13 23.3   21.9R 03YQ179   695  C~0U31      
2011 01  07.47643  08 23 17.80   +24 13 25.0         03YQ179   695  C~0U31      
2011 01  07.54947  08 23 17.36   +24 13 28.7         03YQ179   695  C~0U31      
2016 03  13.14812  09 01 46.25   +25 29 06.1   22.6R 03YQ179   G37  C~1pPj      
2016 03  13.18789  09 01 46.10   +25 29 06.7         03YQ179   G37  C~1pPj      

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     0.07       0.00     0.16
  2   0.0000      0.01     0.18      -0.10     0.05
  3   0.0001     -1.71     0.07       0.15     0.16
  4   0.0001     -1.37 (   0.51)      0.71 (   0.71)
  5   0.0001     -3.30     0.20       0.42     0.28
  6   0.0001     -3.65    -0.05      -0.04    -0.18
  7   0.0029    -76.27    -0.19       6.61     0.08
  8   0.1578  -4102.86    -0.05     370.84     0.22
  9   0.3085  -4976.35    -0.10     711.59    -0.08
 10   0.3087  -4975.16    -0.27     712.06     0.07
 11   0.3114  -4949.30    -0.36     717.69    -0.26
 12   1.0428   5054.31    -0.12    2474.98     0.01
 13   1.0429   5051.46     0.01    2475.23     0.01
 14   1.0430   5048.47     0.01    2475.46    -0.01
 15   1.0620   4508.75     0.05    2520.42    -0.32
 16   2.0967   9846.40     0.52    5006.90    -0.05
 17   2.0971   9836.04     0.36    5007.46    -0.23
 18   3.1425  15041.64     0.24    7537.07    -0.61
 19   3.1481  14908.38    -0.29    7547.63     0.23
 20   3.1484  14902.63     0.11    7548.21     0.41
 21   3.8739  27537.50     0.05    9251.24    -0.22
 22   3.8766  27524.13     0.10    9261.64    -0.27
 23   4.1909  20464.19    -0.04   10080.94     0.28
 24   4.1910  20461.97     0.04   10080.71    -0.09
 25   4.8297  34029.78    -0.41   11543.43    -0.19
 26   4.8324  34045.98    -0.26   11555.60    -0.05
 27   4.8352  34060.32    -0.44   11567.67    -0.16
 28   4.8855  34029.22     0.18   11784.84     0.11
 29   4.8855  34029.03     0.11   11785.00     0.21
 30   4.8855  34028.87     0.06   11785.07     0.20
 31   4.8855  34028.85     0.14   11785.17     0.22
 32   7.0387  44713.29 (   2.54)  17551.04 (   0.12)
 33   7.0391  44703.65 (   3.01)  17550.40 (  -1.45)
 34   7.0393  44696.59 (   1.82)  17552.53 (   0.16)
 35  12.2182  76622.29    -0.03   31874.85    -0.05
 36  12.2183  76619.86     0.08   31874.72     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.

03YQ179    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        89.087    89.127    89.047
ecceobj         0.581     0.581     0.581
incobj         20.860    20.860    20.860
qmin           35.504    35.616    35.558
qmax          144.821   144.840   144.665
amean          88.086    88.606    88.013
amin           86.183    86.994    86.206
amax           90.700    90.755    90.623
emean           0.580     0.582     0.578
emin            0.562     0.566     0.560
emax            0.598     0.597     0.599
imean          18.753    18.810    19.002
imin           17.674    17.858    17.596
imax           20.220    20.093    20.272
excite_mean     0.663     0.666     0.664
fracstop        1.000     1.000     1.000
cjmean          2.980     2.980     2.980

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       165.3     186.3     169.3
kozaiamp        179.9     180.0     180.0