Orbit Fit and Astrometric record for 03YU179

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: 03YU179   
# Created Sun Dec 17 02:37:19 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   25
# Arc:  10.10y
# First observation: 2003/12/24
#  Last observation: 2014/01/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000844   0.027472  -0.000050   0.002269   0.024052   0.000000
# Chi-squared of fit:    25.96 DOF:   42 RMS:  0.18
# Min/Max residuals:    -0.40    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.811645E-05  2.763190E-02  5.492029E-07  2.274241E-03  2.587049E-02  1.475153E-03
# Covariance matrix:
  1.8659E-13 -1.0704E-13  6.0806E-15 -8.5669E-15  5.6634E-14 -3.8567E-13
 -1.0704E-13  1.2108E-13 -7.8555E-15  1.0750E-14 -4.9553E-14  4.8314E-13
  6.0806E-15 -7.8555E-15  1.1267E-13 -1.5901E-14  2.3062E-15 -3.2334E-14
 -8.5669E-15  1.0750E-14 -1.5901E-14  5.6534E-15 -5.3307E-15  4.4803E-14
  5.6634E-14 -4.9553E-14  2.3062E-15 -5.3307E-15  1.7607E-13 -2.4523E-13
 -3.8567E-13  4.8314E-13 -3.2334E-14  4.4803E-14 -2.4523E-13  2.0151E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.285087  111.999228    0.335754   -0.020595   -0.921142  2452997.968413
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:           12.50657 +/-     0.011
Argument of Peri:      327.32517 +/-     0.015
Long of Asc Node:      126.48856 +/-     0.000
Inclination:             4.84709 +/-     0.000
Eccentricity:         0.16518563 +/-    0.0001
Semi-Major Axis:     47.09595151 +/-    0.0049
Time of Perihelion: 2448889.3131 +/-       3.4
Perihelion:          39.31637724 +/-    0.0057
Aphelion:            54.87552579 +/-    0.0070
Period (y)              323.2091 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.51382629 +/-    0.0002
Ecliptic Y           36.81330743 +/-    0.0006
Ecliptic Z           -0.86688764 +/-    0.0000
Ecliptic XDOT        -0.00277607 +/-    0.0000
Ecliptic YDOT        -0.00095202 +/-    0.0000
Ecliptic ZDOT         0.00023727 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.58057923 +/-    0.0005
Geocenter to KBO     38.65408473 +/-    0.0006
# Hcoef:  7.25

The following table shows the complete astrometric record for 03YU179. 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 (03YU179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  24.46767  07 34 11.14   +20 22 26.1   23.0g 03YU179   568  Cq9908      
2003 12  24.49091  07 34 11.03   +20 22 26.4   23.0g 03YU179   568  Cq9908      
2003 12  24.51415  07 34 10.91   +20 22 26.7   22.8g 03YU179   568  Cq9908      
2003 12  25.50897  07 34 05.84   +20 22 38.8   23.0g 03YU179   568  Cq9908      
2004 04  15.15900  07 28 06.38   +20 40 05.3         03YU179   675  Cq9908      
2004 04  15.21134  07 28 06.46   +20 40 05.2         03YU179   675  Cq9908      
2004 04  16.19869  07 28 08.04   +20 40 05.0         03YU179   675  Cq9908      
2004 09  16.51192  07 42 18.47   +20 11 38.1         03YU179   675  Cq9908      
2004 09  18.46447  07 42 26.14   +20 11 18.1         03YU179   675  Cq9908      
2004 09  18.47321  07 42 26.20   +20 11 17.9         03YU179   675  Cq9908      
2005 01  08.36606  07 39 34.48   +20 18 03.4         03YU179   568  Cq9908      
2005 01  08.40392  07 39 34.27   +20 18 04.0         03YU179   568  Cq9908      
2005 01  08.44177  07 39 34.07   +20 18 04.7         03YU179   568  Cq9908      
2005 01  15.38895  07 38 56.35   +20 19 43.4   23.1r 03YU179   568  Cq9908      
2005 10  03.45349  07 49 43.76   +20 00 25.5   23.6R 03YU179   675  Cq9908      
2005 10  03.52662  07 49 43.97   +20 00 25.0         03YU179   675  Cq9908      
2008 09  27.39060  08 08 41.85   +19 29 50.7   24.7R 03YU179   250  S~06Ah      
2008 09  27.39754  08 08 41.88   +19 29 50.7         03YU179   250  S~06Ah      
2008 09  27.40379  08 08 41.90   +19 29 50.6         03YU179   250  S~06Ah      
2008 09  27.41074  08 08 41.92   +19 29 50.5         03YU179   250  S~06Ah      
2013 03  13.17100  08 27 21.04   +19 03 27.4   22.5R 03YU179   695  C~0ud7      
2013 03  14.15788  08 27 17.96   +19 03 39.7         03YU179   695  C~0ud7      
2013 03  14.24696  08 27 17.69   +19 03 40.4         03YU179   695  C~0ud7      
2014 01  28.41175  08 37 03.82   +18 35 39.4   22.3R 03YU179   G37  C~16Mq      
2014 01  28.48111  08 37 03.46   +18 35 40.7         03YU179   G37  C~16Mq      

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    -0.25       0.00     0.17
  2   0.0001     -1.57    -0.12       0.05     0.21
  3   0.0001     -3.29    -0.12       0.08     0.23
  4   0.0029    -75.60    -0.22       0.70     0.26
  5   0.3085  -5227.39     0.04     255.54    -0.23
  6   0.3087  -5226.26     0.09     255.61    -0.31
  7   0.3114  -5204.29     0.09     258.74    -0.28
  8   0.7311   6872.07 (   0.29)    492.55 (   0.72)
  9   0.7365   6982.00    -0.40     491.33     0.20
 10   0.7365   6982.87    -0.01     491.28     0.15
 11   1.0428   4530.48     0.21     482.10    -0.29
 12   1.0429   4527.47     0.17     482.20    -0.23
 13   1.0431   4524.58     0.26     482.42    -0.05
 14   1.0621   3984.71     0.11     491.37     0.07
 15   1.7768  13180.20    -0.03     939.06     0.09
 16   1.7770  13183.21     0.32     939.11     0.16
 17   4.7609  29476.15    -0.01    2300.80    -0.11
 18   4.7609  29476.57     0.05    2300.89    -0.02
 19   4.7609  29476.88     0.03    2300.85    -0.06
 20   4.7610  29477.18    -0.03    2300.82    -0.10
 21   9.2175  45815.24    -0.17    4345.51    -0.07
 22   9.2202  45767.66    -0.34    4347.10     0.13
 23   9.2205  45763.58    -0.09    4346.86    -0.21
 24  10.0970  54751.89     0.17    4768.55     0.18
 25  10.0972  54746.24     0.25    4768.52     0.09

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.

03YU179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.974    46.989    46.960
ecceobj         0.164     0.164     0.164
incobj          4.857     4.857     4.857
qmin           38.309    38.289    38.332
qmax           55.750    55.736    55.659
amean          46.801    46.816    46.787
amin           46.399    46.403    46.375
amax           47.288    47.289    47.260
emean           0.165     0.165     0.165
emin            0.152     0.151     0.151
emax            0.180     0.180     0.179
imean           3.650     3.649     3.651
imin            3.103     3.105     3.103
imax            4.225     4.222     4.230
excite_mean     0.177     0.177     0.177
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

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       173.0     172.9     173.0
kozaiamp        180.0     180.0     180.0