Orbit Fit and Astrometric record for 15OY190

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: 15OY190   
# Created Tue Apr  1 01:10:30 2025
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   7.07d
# First observation: 2015/07/15
#  Last observation: 2015/07/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.028970  -0.000000  -0.013702   0.028371   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     3.01 DOF:     17 RMS:  0.09
# Min/Max residuals:    -0.20    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.460903E-05  2.550208E-02 -7.905353E-06 -1.309203E-02  2.754591E-02 -2.047139E-03
# Covariance matrix:
  2.7848E-11  4.8564E-08 -4.9828E-12 -8.3398E-09  1.1092E-08  5.2522E-07
  4.8564E-08  8.5833E-05 -8.8022E-09 -1.4733E-05  1.9593E-05  9.2190E-04
 -4.9828E-12 -8.8022E-09  1.2485E-12  1.4914E-09 -2.0097E-09 -9.5422E-08
 -8.3398E-09 -1.4733E-05  1.4914E-09  2.5308E-06 -3.3636E-06 -1.5940E-04
  1.1092E-08  1.9593E-05 -2.0097E-09 -3.3636E-06  4.4738E-06  2.1332E-04
  5.2522E-07  9.2190E-04 -9.5422E-08 -1.5940E-04  2.1332E-04  1.7345E-02
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.173906  -20.222559    0.745989    0.122340   -0.681189  2457218.953199
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          285.11678 +/-   169.523
Argument of Peri:      243.81221 +/-   223.129
Long of Asc Node:      177.32821 +/-     6.179
Inclination:            28.73539 +/-     7.825
Eccentricity:         0.08913058 +/-    4.5694
Semi-Major Axis:     37.57773088 +/-   18.1169
Time of Perihelion: 2474712.0404 +/-   37544.5
Perihelion:          34.22840596 +/-  172.4986
Aphelion:            40.92705580 +/-  172.8374
Period (y)              230.3584 +/-    166.59
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.91789848 +/-    2.5745
Ecliptic Y          -13.29051604 +/-    0.9486
Ecliptic Z            6.41221772 +/-    0.4924
Ecliptic XDOT         0.00090164 +/-    0.0123
Ecliptic YDOT         0.00236195 +/-    0.0040
Ecliptic ZDOT        -0.00131666 +/-    0.0023
# Distances at JD0 (AU)
Heliocenter to KBO   36.98889279 +/-    2.3868
Geocenter to KBO     36.30303321 +/-    2.7876
# Hcoef:  9.32

The following table shows the complete astrometric record for 15OY190. 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 (15OY190) followed by the observatory code and reference code for the source of the astrometry.

2015 07  15.45241  22 30 01.90   +01 31 52.9   25.3r 15OY190   T09  C~8ibn      
2015 07  15.46937  22 30 01.84   +01 31 52.6   25.0r 15OY190   T09  C~8ibn      
2015 07  15.51059  22 30 01.71   +01 31 51.9   25.0r 15OY190   T09  C~8ibn      
2015 07  15.55122  22 30 01.57   +01 31 51.4   25.1r 15OY190   T09  C~8ibn      
2015 07  21.51429  22 29 40.74   +01 30 14.1   25.1i 15OY190   T09  C~8ibn      
2015 07  21.54697  22 29 40.60   +01 30 13.8   24.7i 15OY190   T09  C~8ibn      
2015 07  21.57675  22 29 40.48   +01 30 13.2   25.1i 15OY190   T09  C~8ibn      
2015 07  21.60639  22 29 40.38   +01 30 12.4   25.4i 15OY190   T09  C~8ibn      
2015 07  22.47331  22 29 37.16   +01 29 56.6   24.4z 15OY190   T09  C~8ibn      
2015 07  22.50032  22 29 37.06   +01 29 56.1   24.2z 15OY190   T09  C~8ibn      
2015 07  22.51928  22 29 36.98   +01 29 55.6   24.4z 15OY190   T09  C~8ibn      

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     0.01       0.00     0.08
     2   0.0000     -0.95    -0.06       0.06     0.04
     3   0.0002     -3.02     0.03       0.14    -0.11
     4   0.0003     -5.15     0.02       0.46    -0.01
     5   0.0166   -331.23     0.12      26.83    -0.20
     6   0.0167   -333.29     0.01      27.33     0.16
     7   0.0168   -335.18    -0.11      27.45     0.15
     8   0.0168   -336.87    -0.04      27.26    -0.16
     9   0.0192   -387.56     0.02      30.64     0.05
    10   0.0193   -389.14     0.07      30.73     0.04
    11   0.0193   -390.44    -0.08      30.72    -0.06

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.

15OY190    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0