Orbit Fit and Astrometric record for 99CM158

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: 99CM158   
# Created Fri Dec 15 02:36:57 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   21
# Arc:  17.08y
# First observation: 1999/02/11
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.007991   0.051186   0.001041  -0.008383   0.031527   0.000000
# Chi-squared of fit:    30.46 DOF:   34 RMS:  0.22
# Min/Max residuals:    -0.80    0.45
# Exact a, adot, b, bdot, g, gdot:
  2.178537E-05  4.674850E-02 -3.472567E-06 -7.636850E-03  3.595324E-02  3.842100E-03
# Covariance matrix:
  2.9354E-13 -7.0954E-14 -1.2131E-14  1.0848E-14  2.3750E-13 -7.6645E-14
 -7.0954E-14  4.7828E-14  8.6019E-15 -7.8344E-15 -2.4996E-14  5.5512E-14
 -1.2131E-14  8.6019E-15  1.2171E-13 -1.0105E-14 -5.9528E-15  1.0305E-14
  1.0848E-14 -7.8344E-15 -1.0105E-14  2.7539E-15  4.9665E-15 -9.3810E-15
  2.3750E-13 -2.4996E-14 -5.9528E-15  4.9665E-15  4.7682E-13 -3.4686E-14
 -7.6645E-14  5.5512E-14  1.0305E-14 -9.3810E-15 -3.4686E-14  6.6465E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.474836  162.452725    0.336646   -0.007980   -0.934742  2451221.026423
# Heliocentric elements and errors
Epoch:              2451220.5000  =  1999/02/11
Mean Anomaly:           10.40428 +/-     0.003
Argument of Peri:      163.94198 +/-     0.004
Long of Asc Node:      338.97187 +/-     0.000
Inclination:             9.30761 +/-     0.000
Eccentricity:         0.27532437 +/-    0.0001
Semi-Major Axis:     39.20123225 +/-    0.0048
Time of Perihelion: 2448629.5601 +/-       0.5
Perihelion:          28.40817762 +/-    0.0045
Aphelion:            49.99428688 +/-    0.0067
Period (y)              245.4470 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.30045185 +/-    0.0005
Ecliptic Y            8.98770968 +/-    0.0002
Ecliptic Z           -0.23058872 +/-    0.0000
Ecliptic XDOT        -0.00134934 +/-    0.0000
Ecliptic YDOT        -0.00329850 +/-    0.0000
Ecliptic ZDOT        -0.00058395 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   28.74276897 +/-    0.0005
Geocenter to KBO     27.81390721 +/-    0.0005
# Hcoef:  7.68

The following table shows the complete astrometric record for 99CM158. 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 (99CM158) followed by the observatory code and reference code for the source of the astrometry.

1999 02  11.52568  10 54 33.43   +06 26 56.5   21.9R 99CM158   568  Cb7527      
1999 02  11.60965  10 54 32.91   +06 26 58.9   21.9R 99CM158   568  Cb7527      
1999 03  15.52508  10 51 10.30   +06 45 10.9   21.9R 99CM158   568  Cb7527      
1999 03  15.56242  10 51 10.06   +06 45 12.1   21.9R 99CM158   568  Cb7527      
1999 04  12.38664  10 48 37.02   +06 58 52.8   23.2V 99CM158   568  Cb7527      
1999 04  12.44075  10 48 36.76   +06 58 54.0   23.2V 99CM158   568  Cb7527      
2000 05  05.26157  10 56 27.48   +05 41 31.8         99CM158   568  Cc7487      
2000 05  05.30793  10 56 27.36   +05 41 31.6         99CM158   568  Cc7487      
2001 02  16.42449  11 12 21.78   +03 39 00.3         99CM158   568  Cc7487      
2001 02  16.44631  11 12 21.64   +03 39 01.0         99CM158   568  Cc7487      
2001 02  17.47576  11 12 15.53   +03 39 33.8   21.9  99CM158   568  Cc7487      
2001 02  20.280109 11 11 58.61   +03 41 05.4   21.9V 99CM158   645  C~1SKn      
2001 02  20.280938 11 11 58.61   +03 41 05.4   21.6V 99CM158   645  C~1SKn      
2001 02  20.283459 11 11 58.59   +03 41 05.5   22.7V 99CM158   645  C~1SKn      
2007 02  15.41532  12 05 12.35   -04 38 42.9   22.5R 99CM158   688  Cu2274      
2007 02  15.48968  12 05 12.03   -04 38 40.4         99CM158   688  Cu2274      
2014 03  26.15780  12 59 38.76   -12 58 59.0   22.7V 99CM158   W84  C~2J8l      
2014 03  26.22604  12 59 38.34   -12 58 57.0         99CM158   W84  C~2J8l      
2014 03  26.29610  12 59 37.93   -12 58 54.9         99CM158   W84  C~2J8l      
2016 03  13.26362  13 16 52.90   -15 15 36.1   22.4R 99CM158   G37  C~1pPV      
2016 03  13.31211  13 16 52.67   -15 15 35.2         99CM158   G37  C~1pPV      

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     0.02
  2   0.0002     -8.08    -0.26      -0.74    -0.26
  3   0.0876  -3215.70    -0.01    -141.01     0.07
  4   0.0877  -3219.46    -0.03    -141.26    -0.00
  5   0.1639  -5640.69     0.45    -246.94     0.23
  6   0.1640  -5644.73     0.29    -247.29     0.10
  7   1.2286   2613.38    -0.29   -1868.10    -0.07
  8   1.2287   2611.80    -0.20   -1868.97    -0.80
  9   2.0148  18662.98     0.08   -3160.40     0.02
 10   2.0148  18660.75    -0.03   -3160.56    -0.03
 11   2.0177  18562.93     0.22   -3165.78    -0.01
 12   2.0253  18291.78    -0.04   -3179.48     0.24
 13   2.0253  18291.78     0.04   -3179.48     0.25
 14   2.0253  18291.47    -0.02   -3179.50     0.24
 15   8.0106  77450.62     0.17  -12701.89     0.08
 16   8.0109  77444.46 (   0.41) -12701.34 (   1.21)
 17  15.1174 151275.41    -0.04  -25639.52    -0.05
 18  15.1176 151265.46    -0.23  -25639.55    -0.14
 19  15.1178 151255.66    -0.01  -25639.40    -0.07
 20  17.0835 179374.68    -0.22  -29956.10     0.06
 21  17.0836 179368.63     0.39  -29956.21     0.10

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.

99CM158    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.305    39.319    39.290
ecceobj         0.277     0.278     0.277
incobj          9.299     9.299     9.299
qmin           27.870    27.831    27.762
qmax           51.877    51.802    51.908
amean          39.455    39.455    39.455
amin           38.910    38.918    38.910
amax           40.107    40.105    40.114
emean           0.279     0.278     0.280
emin            0.262     0.262     0.264
emax            0.294     0.295     0.296
imean          10.206    10.365    10.125
imin            9.512     9.695     9.459
imax           10.874    11.097    10.658
excite_mean     0.331     0.331     0.331
fracstop        1.000     1.000     1.000
cjmean          2.926     2.926     2.926

libcent 0       179.6     181.1     179.5
libamp  0       123.1     121.7     124.0
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       200.6     189.3     197.3
kozaiamp        180.0     180.0     180.0