Orbit Fit and Astrometric record for 03UY291

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: 03UY291   
# Created Thu Dec  9 02:09:43 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     17 observations of     17
# Arc:  17.22y
# First observation: 2003/10/24
#  Last observation: 2021/01/11
# Chi-squared of fit:    12.38 DOF:     28 RMS:  0.15
# Min/Max residuals:    -0.32    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.693533E-05  2.426962E-02  9.746572E-07  7.689260E-04  2.388070E-02  2.591035E-03
# Covariance matrix:
  4.3231E-13 -1.1167E-13  2.6314E-15 -3.4874E-15  4.2936E-13 -3.1339E-13
 -1.1167E-13  6.6030E-14 -1.8455E-15  2.1293E-15 -8.4710E-14  1.7866E-13
  2.6314E-15 -1.8455E-15  1.2593E-13 -1.0143E-14  1.8045E-15 -5.1332E-15
 -3.4874E-15  2.1293E-15 -1.0143E-14  2.6293E-15 -3.0040E-15  6.0086E-15
  4.2936E-13 -8.4710E-14  1.8045E-15 -3.0040E-15  7.1303E-13 -2.9449E-13
 -3.1339E-13  1.7866E-13 -5.1332E-15  6.0086E-15 -2.9449E-13  5.0811E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.082808   57.277747    0.452359    0.047758   -0.885854  2452936.897423
# Heliocentric elements and errors
Epoch:              2452936.5000  =  2003/10/24
Mean Anomaly:           29.50061 +/-     0.018
Argument of Peri:       17.88783 +/-     0.022
Long of Asc Node:      358.36981 +/-     0.002
Inclination:             3.54647 +/-     0.000
Eccentricity:         0.16150512 +/-    0.0001
Semi-Major Axis:     49.30440030 +/-    0.0093
Time of Perihelion: 2442574.2174 +/-       6.9
Perihelion:          41.34148733 +/-    0.0098
Aphelion:            57.26731328 +/-    0.0124
Period (y)              346.2077 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.45980144 +/-    0.0008
Ecliptic Y           35.68380391 +/-    0.0012
Ecliptic Z            2.25203582 +/-    0.0001
Ecliptic XDOT        -0.00218781 +/-    0.0000
Ecliptic YDOT         0.00174362 +/-    0.0000
Ecliptic ZDOT         0.00010416 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.76403214 +/-    0.0011
Geocenter to KBO     41.87477862 +/-    0.0015
# Hcoef:  7.21

The following table shows the complete astrometric record for 03UY291. 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 (03UY291) followed by the observatory code and reference code for the source of the astrometry.

2003 10  24.39668  03 36 56.18   +22 33 04.0   22.8R 03UY291   695  Cj5825      
2003 10  24.48942  03 36 55.77   +22 33 03.0         03UY291   695  Cj5825      
2003 11  20.29112  03 34 45.12   +22 26 25.0   23.2R 03UY291   695  Cj5825      
2003 11  20.36598  03 34 44.73   +22 26 23.8         03UY291   695  Cj5825      
2004 01  14.05737  03 31 03.19   +22 12 12.6   23.0R 03UY291   304  Cj7023      
2004 01  14.08078  03 31 03.15   +22 12 12.3         03UY291   304  Cj7023      
2004 11  11.32352  03 41 15.88   +22 50 27.9   23.0R 03UY291   695  Cm1746      
2004 11  11.45978  03 41 15.17   +22 50 25.9         03UY291   695  Cm1746      
2004 11  18.47193  03 40 39.71   +22 48 37.2   23.4R 03UY291   568  Cm1746      
2004 11  18.52724  03 40 39.40   +22 48 36.3         03UY291   568  Cm1746      
2005 12  02.21715  03 45 20.42   +23 06 04.9   23.4R 03UY291   695  Cp9890      
2005 12  02.27016  03 45 20.16   +23 06 04.1         03UY291   695  Cp9890      
2005 12  02.32309  03 45 19.88   +23 06 03.1         03UY291   695  Cp9890      
2013 11  06.36338  04 33 57.99   +25 26 18.5   23.9R 03UY291   G37  C~0yio      
2013 11  06.45179  04 33 57.56   +25 26 18.0         03UY291   G37  C~0yio      
2021 01  11.283430 05 08 35.537  +26 29 27.36  23.1G 03UY291   G37  C~4TxD      
2021 01  11.374080 05 08 35.131  +26 29 26.62        03UY291   G37  C~4TxD      

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    -0.16       0.00    -0.13
     2   0.0003      0.00    -0.00       0.00     0.02
     3   0.0736      0.00     0.06       0.00    -0.18
     4   0.0738      0.00    -0.02       0.00    -0.12
     5   0.2236      0.00    -0.32       0.00     0.28
     6   0.2236      0.00    -0.11       0.00     0.25
     7   1.0511      0.00     0.17       0.00    -0.07
     8   1.0515      0.00    -0.07       0.00    -0.00
     9   1.0707      0.00     0.33       0.00    -0.09
    10   1.0709      0.00    -0.04       0.00    -0.09
    11   2.1077      0.00     0.09       0.00     0.10
    12   2.1078      0.00     0.21       0.00     0.14
    13   2.1079      0.00     0.02       0.00    -0.00
    14  10.0369      0.00     0.04       0.00    -0.14
    15  10.0371      0.00    -0.27       0.00    -0.04
    16  17.2180      0.00     0.20       0.00     0.06
    17  17.2183      0.00    -0.10       0.00     0.04

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.

03UY291    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        49.745    49.745    49.744
ecceobj         0.170     0.170     0.170
incobj          3.536     3.536     3.536
qmin           40.579    40.575    40.582
qmax           58.419    58.384    58.434
amean          49.278    49.279    49.278
amin           48.844    48.847    48.848
amax           49.773    49.776    49.768
emean           0.163     0.163     0.163
emin            0.151     0.152     0.151
emax            0.174     0.174     0.174
imean           4.120     4.120     4.120
imin            3.785     3.784     3.786
imax            4.407     4.410     4.409
excite_mean     0.178     0.178     0.178
fracstop        1.000     1.000     1.000
cjmean          3.129     3.129     3.129

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       180.1     180.1     180.1
kozaiamp        180.0     180.0     180.0