Orbit Fit and Astrometric record for 10RF188

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: 10RF188   
# Created Tue Oct 24 01:37:51 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   2.98y
# First observation: 2010/09/15
#  Last observation: 2013/09/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000018   0.012878   0.000006  -0.003148   0.018260   0.000000
# Chi-squared of fit:     6.63 DOF:   28 RMS:  0.11
# Min/Max residuals:    -0.24    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.145234E-05  1.278049E-02 -3.536841E-06 -3.122198E-03  1.804559E-02 -2.805105E-03
# Covariance matrix:
  2.7096E-13 -1.8425E-14  5.2266E-15 -2.0710E-14  3.8835E-13  2.1544E-12
 -1.8425E-14  9.6800E-13  6.0943E-14 -2.4159E-13  1.5266E-12  2.5441E-11
  5.2266E-15  6.0943E-14  2.0078E-13 -9.6018E-14  1.0673E-13  1.7097E-12
 -2.0710E-14 -2.4159E-13 -9.6018E-14  1.2175E-13 -4.2306E-13 -6.7773E-12
  3.8835E-13  1.5266E-12  1.0673E-13 -4.2306E-13  3.7215E-12  4.4444E-11
  2.1544E-12  2.5441E-11  1.7097E-12 -6.7773E-12  4.4444E-11  7.1354E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.762411    5.580430    0.227358   -0.030015   -0.974697  2455455.008116
# Heliocentric elements and errors
Epoch:              2455450.5000  =  2010/09/11
Mean Anomaly:          237.60082 +/-     0.330
Argument of Peri:      332.48198 +/-     0.267
Long of Asc Node:      178.27913 +/-     0.001
Inclination:            13.80460 +/-     0.001
Eccentricity:         0.28905536 +/-    0.0008
Semi-Major Axis:     46.92903643 +/-    0.0349
Time of Perihelion: 2495374.7608 +/-      97.9
Perihelion:          33.36394673 +/-    0.0464
Aphelion:            60.49412614 +/-    0.0597
Period (y)              321.4924 +/-      0.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           56.12326153 +/-    0.0059
Ecliptic Y            5.25397981 +/-    0.0006
Ecliptic Z           -1.70448334 +/-    0.0002
Ecliptic XDOT        -0.00062599 +/-    0.0000
Ecliptic YDOT         0.00189342 +/-    0.0000
Ecliptic ZDOT        -0.00046040 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   56.39441507 +/-    0.0059
Geocenter to KBO     55.41520541 +/-    0.0059
# Hcoef:  5.13

The following table shows the complete astrometric record for 10RF188. 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 (10RF188) followed by the observatory code and reference code for the source of the astrometry.

2010 09  15.50735  00 23 16.967  +00 35 54.59  22.8w 10RF188   F51  C~1w3j      
2010 09  16.44039  00 23 13.886  +00 35 32.37  22.8w 10RF188   F51  C~1w3k      
2010 09  16.47387  00 23 13.773  +00 35 31.53  22.7w 10RF188   F51  C~1w3k      
2010 10  03.40015  00 22 16.277  +00 28 45.06  22.8w 10RF188   F51  C~1w3k      
2010 10  03.42871  00 22 16.162  +00 28 44.47  23.1w 10RF188   F51  C~1w3k      
2010 10  09.31076  00 21 56.196  +00 26 25.88  22.2r 10RF188   F51  C~1w3k      
2011 09  26.42597  00 25 40.419  +00 39 14.91  23.1w 10RF188   F51  C~1w3k      
2011 09  26.43999  00 25 40.384  +00 39 14.42  22.8w 10RF188   F51  C~1w3k      
2011 09  26.47475  00 25 40.253  +00 39 13.84  22.7w 10RF188   F51  C~1w3k      
2011 10  16.45061  00 24 32.437  +00 31 23.24  21.3i 10RF188   F51  C~1w3k      
2012 11  05.29639  00 26 29.890  +00 32 00.31  22.6w 10RF188   F51  C~1w3k      
2012 11  05.32655  00 26 29.800  +00 31 59.78  22.9w 10RF188   F51  C~1w3k      
2013 09  04.47233  00 32 52.190  +01 02 59.29  22.5w 10RF188   F51  C~1w3k      
2013 09  04.48732  00 32 52.133  +01 02 58.84  22.6w 10RF188   F51  C~1w3k      
2013 09  09.46930  00 32 36.712  +01 01 04.67  22.2w 10RF188   F51  C~1w3k      
2013 09  09.48401  00 32 36.663  +01 01 04.42  22.4w 10RF188   F51  C~1w3k      
2013 09  09.49874  00 32 36.602  +01 01 04.25  22.2w 10RF188   F51  C~1w3k      

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    -0.05       0.00     0.17
  2   0.0026    -51.23     0.06      -2.11     0.10
  3   0.0026    -53.12     0.05      -2.21     0.05
  4   0.0490  -1005.99     0.11     -34.01    -0.15
  5   0.0491  -1007.81    -0.07     -33.87     0.02
  6   0.0652  -1337.70     0.05     -42.55     0.08
  7   1.0292   2055.26    -0.09    -667.83     0.00
  8   1.0292   2054.58     0.04    -668.07    -0.22
  9   1.0293   2052.55     0.01    -667.82     0.08
 10   1.0840    932.10    -0.24    -697.33    -0.16
 11   2.1404   2564.76     0.11   -1360.70    -0.15
 12   2.1405   2563.31     0.01   -1360.65    -0.10
 13   2.9705   8571.41     0.12   -1922.59     0.00
 14   2.9705   8570.44    -0.08   -1922.67    -0.04
 15   2.9842   8312.43     0.02   -1936.06    -0.04
 16   2.9842   8311.65     0.03   -1936.00     0.06
 17   2.9842   8310.74    -0.08   -1935.79     0.30

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.

10RF188    quality flag:2

Type:       SCATNEAR  CENTAURR  SCATNEAR

axisobj        46.987    47.091    46.886
ecceobj         0.289     0.291     0.287
incobj         13.793    13.793    13.793
qmin           32.166    29.570    31.440
qmax           61.649    62.663    62.085
amean          45.998    45.544    45.921
amin           45.215    39.675    43.556
amax           47.395    47.534    47.436
emean           0.273     0.290     0.285
emin            0.243     0.221     0.242
emax            0.307     0.320     0.311
imean          14.707    13.373    13.812
imin           12.369    11.210    11.480
imax           16.407    15.317    15.727
excite_mean     0.373     0.371     0.372
fracstop        1.000     0.910     1.000
cjmean          2.955     2.951     2.954

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       172.4     170.5     176.8
kozaiamp        180.0     180.0     180.0