Orbit Fit and Astrometric record for 03UN284

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: 03UN284   
# Created Tue Oct 17 01:37:25 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   33
# Arc:  12.28y
# First observation: 2003/10/24
#  Last observation: 2016/02/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000115   0.023281  -0.000012   0.001185   0.023993   0.000000
# Chi-squared of fit:    51.08 DOF:   56 RMS:  0.23
# Min/Max residuals:    -0.51    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.453951E-05  2.320668E-02  1.805754E-06  1.179407E-03  2.405342E-02  2.566557E-04
# Covariance matrix:
  1.3414E-13 -4.4435E-14  2.0537E-15 -2.0301E-15  6.9613E-14 -1.6860E-13
 -4.4435E-14  3.8847E-14 -1.6600E-15  1.9481E-15 -1.2923E-14  1.5715E-13
  2.0537E-15 -1.6600E-15  7.1487E-14 -1.0345E-14  1.4198E-15 -7.7614E-15
 -2.0301E-15  1.9481E-15 -1.0345E-14  4.5808E-15 -9.1575E-16  8.9453E-15
  6.9613E-14 -1.2923E-14  1.4198E-15 -9.1575E-16  1.1696E-13 -8.3430E-14
 -1.6860E-13  1.5715E-13 -7.7614E-15  8.9453E-15 -8.3430E-14  7.2366E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.972481   54.606661    0.410773    0.015444   -0.907022  2452936.882033
# Heliocentric elements and errors
Epoch:              2452930.5000  =  2003/10/18
Mean Anomaly:          343.28446 +/-     0.522
Argument of Peri:       34.89078 +/-     0.527
Long of Asc Node:       36.04728 +/-     0.001
Inclination:             3.07527 +/-     0.000
Eccentricity:         0.00487491 +/-    0.0000
Semi-Major Axis:     42.68317291 +/-    0.0027
Time of Perihelion: 2457659.8486 +/-     147.6
Perihelion:          42.47509612 +/-    0.0032
Aphelion:            42.89124970 +/-    0.0032
Period (y)              278.8645 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.93236160 +/-    0.0003
Ecliptic Y           34.39135506 +/-    0.0005
Ecliptic Z            0.70568057 +/-    0.0000
Ecliptic XDOT        -0.00214244 +/-    0.0000
Ecliptic YDOT         0.00154582 +/-    0.0000
Ecliptic ZDOT         0.00013488 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.48394924 +/-    0.0004
Geocenter to KBO     41.57413053 +/-    0.0006
# Hcoef:  7.42

The following table shows the complete astrometric record for 03UN284. 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 (03UN284) followed by the observatory code and reference code for the source of the astrometry.

2003 10  24.38129  03 27 58.65   +19 51 50.9   23.2R 03UN284   695  Cj2815      
2003 10  24.47409  03 27 58.20   +19 51 49.6         03UN284   695  Cj2815      
2003 11  20.27327  03 25 46.95   +19 44 23.9   23.2R 03UN284   695  Cj2815      
2003 11  20.34466  03 25 46.61   +19 44 22.7         03UN284   695  Cj2815      
2003 11  24.25805  03 25 26.96   +19 43 14.0         03UN284   695  Cj2815      
2003 11  24.33369  03 25 26.56   +19 43 12.3         03UN284   695  Cj2815      
2003 12  17.27820  03 23 39.92   +19 36 48.1   23.4R 03UN284   568  Ck9589      
2003 12  17.34886  03 23 39.59   +19 36 46.8         03UN284   568  Ck9589      
2004 01  14.05395  03 22 11.34   +19 31 11.5   23.3R 03UN284   304  Cj7023      
2004 01  14.07822  03 22 11.28   +19 31 11.2         03UN284   304  Cj7023      
2004 01  14.10080  03 22 11.23   +19 31 10.9         03UN284   304  Cj7023      
2004 01  15.05509  03 22 09.31   +19 31 03.4   23.3R 03UN284   304  Cj7023      
2004 01  15.07066  03 22 09.26   +19 31 03.3         03UN284   304  Cj7023      
2004 03  15.12250  03 23 06.49   +19 33 50.2   22.7R 03UN284   695  Ck4313      
2004 03  15.16884  03 23 06.69   +19 33 49.9         03UN284   695  Ck4313      
2004 03  16.12519  03 23 10.34   +19 34 03.8         03UN284   695  Ck4313      
2004 09  13.38551  03 35 33.47   +20 21 12.3   22.2R 03UN284   304  Cl5739      
2004 09  13.39329  03 35 33.45   +20 21 12.2         03UN284   304  Cl5739      
2004 09  19.57226  03 35 21.73   +20 20 45.2   24.0R 03UN284   568  Cl5739      
2004 09  19.59992  03 35 21.66   +20 20 44.6         03UN284   568  Cl5739      
2004 09  19.61549  03 35 21.63   +20 20 45.0         03UN284   568  Cl5739      
2005 03  10.12423  03 28 01.54   +19 55 45.0   23.2R 03UN284   695  Cn0218      
2005 03  11.12126  03 28 04.79   +19 55 56.5         03UN284   695  Cn0218      
2007 11  09.26974  03 48 32.58   +21 17 02.0         03UN284   695  Cy4001      
2007 11  09.35563  03 48 32.14   +21 17 00.8         03UN284   695  Cy4001      
2008 03  04.14576  03 43 36.16   +21 00 32.9         03UN284   695  Cy7592      
2008 03  05.13626  03 43 38.55   +21 00 39.4         03UN284   695  Cy7592      
2008 10  23.48092  03 55 18.96   +21 41 03.0   24.3r 03UN284   695  C~0gM6      
2008 10  23.48799  03 55 18.93   +21 41 03.0   24.3r 03UN284   695  C~0gM6      
2008 10  24.40777  03 55 14.94   +21 40 52.9   23.8r 03UN284   695  C~0gM6      
2008 10  24.41484  03 55 14.90   +21 40 52.8   24.1r 03UN284   695  C~0gM6      
2016 02  04.15755  04 27 16.23   +23 29 14.7   23.5R 03UN284   G37  C~1lv5      
2016 02  04.27632  04 27 16.04   +23 29 14.0         03UN284   G37  C~1lv5      

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     0.15       0.00    -0.21
  2   0.0003     -6.47    -0.12       0.29    -0.04
  3   0.0736  -1911.57     0.22      25.03     0.16
  4   0.0738  -1916.52     0.58      25.06     0.14
  5   0.0845  -2202.36     0.14      27.42     0.46
  6   0.0847  -2208.26    -0.18      27.17     0.17
  7   0.1476  -3763.10     0.19      31.52     0.20
  8   0.1478  -3767.94    -0.28      31.43     0.09
  9   0.2236  -5060.09    -0.13      21.49    -0.01
 10   0.2237  -5060.98    -0.27      21.42    -0.08
 11   0.2237  -5061.74    -0.32      21.31    -0.18
 12   0.2263  -5089.92    -0.27      20.93     0.02
 13   0.2264  -5090.63    -0.51      21.01     0.10
 14   0.3908  -4265.27     0.34     -21.85     0.53
 15   0.3909  -4262.61     0.49     -22.86    -0.43
 16   0.3935  -4209.16 (   0.95)    -22.40 (   0.56)
 17   0.8898   6644.06     0.08     176.07    -0.25
 18   0.8898   6643.76    -0.03     176.04    -0.30
 19   0.9068   6477.03     0.02     188.38     0.11
 20   0.9068   6475.93    -0.19     188.02    -0.31
 21   0.9069   6475.61    -0.01     188.51     0.15
 22   1.3764     96.86     0.02     216.99     0.02
 23   1.3792    144.11 (   0.12)    216.91 (   0.66)
 24   4.0435  18084.21     0.31     994.35    -0.23
 25   4.0437  18077.89     0.25     994.50    -0.19
 26   4.3608  13795.78     0.12     932.28     0.03
 27   4.3635  13830.01     0.08     931.20    -0.01
 28   4.9996  23993.60    -0.15    1220.90    -0.15
 29   4.9996  23993.19    -0.12    1220.98    -0.08
 30   5.0021  23935.92    -0.16    1222.41     0.03
 31   5.0021  23935.35    -0.28    1222.43     0.04
 32  12.2814  52245.04    -0.05    2946.80     0.14
 33  12.2817  52242.18     0.09    2946.48     0.08

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.

03UN284    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.976    42.984    42.968
ecceobj         0.012     0.012     0.011
incobj          3.061     3.061     3.061
qmin           41.016    41.076    41.024
qmax           44.438    44.471    44.478
amean          42.669    42.677    42.661
amin           42.347    42.350    42.336
amax           43.004    43.007    42.992
emean           0.017     0.017     0.017
emin            0.000     0.000     0.000
emax            0.034     0.034     0.035
imean           2.111     2.111     2.111
imin            0.933     0.941     0.923
imax            3.056     3.055     3.056
excite_mean     0.042     0.043     0.043
fracstop        1.000     1.000     1.000
cjmean          3.084     3.084     3.084

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       168.8     169.9     169.6
kozaiamp        180.0     180.0     180.0