Orbit Fit and Astrometric record for 14YY49

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: 14YY49    
# Created Sat Oct 21 01:38:32 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   44 observations of   44
# Arc:  10.33y
# First observation: 2004/09/17
#  Last observation: 2015/01/17
# Chi-squared of fit:    77.38 DOF:   82 RMS:  0.23
# Min/Max residuals:    -0.38    1.50
# Exact a, adot, b, bdot, g, gdot:
  3.059060E-05  1.631195E-01 -9.427345E-06 -5.624150E-02  8.180331E-02 -4.218686E-02
# Covariance matrix:
  9.4848E-11 -1.5475E-07  8.2079E-11  5.8298E-08 -3.0636E-10 -2.2218E-07
 -1.5475E-07  5.2491E-04 -1.1666E-07 -1.8262E-04  4.6504E-07  7.8141E-04
  8.2079E-11 -1.1666E-07  7.3074E-11  4.3757E-08 -2.6882E-10 -1.6603E-07
  5.8298E-08 -1.8262E-04  4.3757E-08  8.0840E-05 -1.7805E-07 -2.7905E-04
 -3.0636E-10  4.6504E-07 -2.6882E-10 -1.7805E-07  9.9955E-10  6.6753E-07
 -2.2218E-07  7.8141E-04 -1.6603E-07 -2.7905E-04  6.6753E-07  1.2015E-03
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.670708  -12.024366   -0.117280    0.133876   -0.993453  2453265.809953
# Heliocentric elements and errors
Epoch:              2453266.5000  =  2004/09/18
Mean Anomaly:          352.75287 +/-     0.000
Argument of Peri:      194.38176 +/-     0.000
Long of Asc Node:      188.01007 +/-     0.000
Inclination:            20.42392 +/-     0.026
Eccentricity:         0.60387517 +/-    0.0000
Semi-Major Axis:     31.07583716 +/-    0.0000
Time of Perihelion: 2454540.2849 +/-       0.0
Perihelion:          12.30991078 +/-    0.0000
Aphelion:            49.84176354 +/-    0.0000
Period (y)              173.2377 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.85002923 +/-    0.0000
Ecliptic Y           -2.61660910 +/-    0.0000
Ecliptic Z            1.63162056 +/-    0.0000
Ecliptic XDOT         0.00001281 +/-    0.0000
Ecliptic YDOT         0.00557172 +/-    0.0000
Ecliptic ZDOT        -0.00205385 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.21493709 +/-    0.0000
Geocenter to KBO     12.22458153 +/-    0.0000
# Hcoef: 10.08

The following table shows the complete astrometric record for 14YY49. 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 (14YY49) followed by the observatory code and reference code for the source of the astrometry.

2004 09  17.30921  23 03 48.70   +02 18 42.7   21.2V 14YY49    691  C~1vXy      
2004 09  17.33842  23 03 48.36   +02 18 39.7   21.2V 14YY49    691  C~1vXy      
2004 09  17.36482  23 03 48.04   +02 18 36.9   20.9V 14YY49    691  C~1vXy      
2006 09  15.30544  00 28 56.80   +03 38 48.5         14YY49    691  C~1vXy      
2006 09  15.32275  00 28 56.63   +03 38 46.6         14YY49    691  C~1vXy      
2006 09  15.34005  00 28 56.43   +03 38 45.0         14YY49    691  C~1vXy      
2007 10  09.32119  01 09 48.49   +03 23 26.9   20.9V 14YY49    G96  C~1vXy      
2007 10  09.32738  01 09 48.38   +03 23 26.2   20.9V 14YY49    G96  C~1vXy      
2007 10  09.33356  01 09 48.34   +03 23 25.6   21.2V 14YY49    G96  C~1vXy      
2007 10  09.33980  01 09 48.27   +03 23 24.7   20.8V 14YY49    G96  C~1vXy      
2008 09  23.37707  01 58 21.36   +04 14 04.3   21.2V 14YY49    G96  C~1vXy      
2008 09  23.38544  01 58 21.28   +04 14 03.1   21.1V 14YY49    G96  C~1vXy      
2008 09  23.39385  01 58 21.21   +04 14 02.3   21.1V 14YY49    G96  C~1vXy      
2008 09  23.40230  01 58 21.14   +04 14 01.3   21.3V 14YY49    G96  C~1vXy      
2008 10  08.432500 01 55 43.86   +03 45 59.1   21.1V 14YY49    645  C~1vXy      
2008 10  08.433329 01 55 43.84   +03 45 58.9   20.8V 14YY49    645  C~1vXy      
2008 10  08.435817 01 55 43.80   +03 45 58.5   21.7V 14YY49    645  C~1vXy      
2009 09  27.40282  02 42 25.02   +04 19 05.3   21.2V 14YY49    G96  C~1vXy      
2009 09  27.40981  02 42 24.98   +04 19 04.4   21.2V 14YY49    G96  C~1vXy      
2009 09  27.41690  02 42 24.91   +04 19 03.8   21.3V 14YY49    G96  C~1vXy      
2009 09  27.42403  02 42 24.84   +04 19 02.9   21.4V 14YY49    G96  C~1vXy      
2010 11  10.44412  03 17 28.143  +03 11 38.14  21.1w 14YY49    F51  C~1vXy      
2010 11  10.45752  03 17 27.974  +03 11 37.07  21.1w 14YY49    F51  C~1vXy      
2010 11  10.47195  03 17 27.791  +03 11 35.90  21.1w 14YY49    F51  C~1vXy      
2010 11  10.48741  03 17 27.592  +03 11 34.67  21.2w 14YY49    F51  C~1vXy      
2012 12  09.34967  04 28 59.011  +02 38 07.81  21.7w 14YY49    F51  C~1vXy      
2012 12  09.38182  04 28 58.616  +02 38 06.90  21.5w 14YY49    F51  C~1vXy      
2012 12  09.39673  04 28 58.443  +02 38 06.37  21.6w 14YY49    F51  C~1vXy      
2014 01  21.24874  04 55 33.153  +02 34 49.24  21.9w 14YY49    F51  C~1vXy      
2014 01  21.26163  04 55 33.054  +02 34 49.77  21.8w 14YY49    F51  C~1vXy      
2014 01  21.27460  04 55 32.971  +02 34 50.50  22.0w 14YY49    F51  C~1vXy      
2014 01  21.28767  04 55 32.876  +02 34 50.96  21.8w 14YY49    F51  C~1vXy      
2014 12  16.40746  05 32 09.060  +02 12 41.76  22.0w 14YY49    F51  C~1vXy      
2014 12  16.41871  05 32 08.946  +02 12 41.47  21.6w 14YY49    F51  C~1vXy      
2014 12  16.43000  05 32 08.805  +02 12 41.53  21.8w 14YY49    F51  C~1vXy      
2014 12  16.44124  05 32 08.664  +02 12 41.40  21.8w 14YY49    F51  C~1vXy      
2015 01  15.37647  05 26 41.053  +02 18 13.03  22.1w 14YY49    F51  C~1vXy      
2015 01  15.38882  05 26 40.939  +02 18 13.46  21.8w 14YY49    F51  C~1vXy      
2015 01  15.40120  05 26 40.820  +02 18 13.89  22.0w 14YY49    F51  C~1vXy      
2015 01  15.41360  05 26 40.701  +02 18 14.36  21.9w 14YY49    F51  C~1vXy      
2015 01  17.36144  05 26 23.160  +02 19 21.98  22.2w 14YY49    F51  C~1vXy      
2015 01  17.37527  05 26 23.028  +02 19 22.54  22.2w 14YY49    F51  C~1vXy      
2015 01  17.38908  05 26 22.913  +02 19 22.89  22.1w 14YY49    F51  C~1vXy      
2015 01  17.40308  05 26 22.778  +02 19 23.57  22.2w 14YY49    F51  C~1vXy      

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    -0.38       0.00     1.50
  2   0.0001      0.00     0.24       0.00     0.09
  3   0.0002      0.00    -0.12       0.00     0.18
  4   1.9931      0.00    -0.16       0.00     0.47
  5   1.9932      0.00     0.17       0.00     0.49
  6   1.9932      0.00     0.06       0.00     0.80
  7   3.0582      0.00     0.18       0.00     0.02
  8   3.0582      0.00    -0.34       0.00     0.04
  9   3.0582      0.00     0.18       0.00     0.15
 10   3.0583      0.00     0.26       0.00    -0.03
 11   4.0166      0.00     0.02       0.00     0.12
 12   4.0166      0.00     0.02       0.00    -0.16
 13   4.0167      0.00     0.18       0.00    -0.03
 14   4.0167      0.00     0.34       0.00    -0.10
 15   4.0578      0.00     0.42       0.00    -0.13
 16   4.0578      0.00     0.26       0.00    -0.24
 17   4.0578      0.00     0.10       0.00    -0.36
 18   5.0270      0.00     0.11       0.00     0.17
 19   5.0270      0.00     0.39       0.00     0.01
 20   5.0270      0.00     0.23       0.00     0.17
 21   5.0270      0.00     0.07       0.00     0.03
 22   6.1468      0.00    -0.03       0.00     0.01
 23   6.1469      0.00     0.01       0.00     0.01
 24   6.1469      0.00     0.03       0.00    -0.02
 25   6.1470      0.00     0.01       0.00    -0.03
 26   8.2274      0.00     0.01       0.00     0.26
 27   8.2274      0.00     0.10       0.00     0.21
 28   8.2275      0.00     0.29       0.00     0.08
 29   9.3441      0.00     0.15       0.00    -0.09
 30   9.3442      0.00     0.01       0.00    -0.10
 31   9.3442      0.00     0.13       0.00     0.08
 32   9.3442      0.00     0.07       0.00    -0.01
 33  10.2453      0.00    -0.09       0.00     0.12
 34  10.2453      0.00     0.25       0.00    -0.03
 35  10.2454      0.00     0.19       0.00     0.17
 36  10.2454      0.00     0.13       0.00     0.17
 37  10.3274      0.00     0.14       0.00    -0.10
 38  10.3274      0.00     0.18       0.00    -0.08
 39  10.3274      0.00     0.14       0.00    -0.06
 40  10.3275      0.00     0.10       0.00    -0.01
 41  10.3328      0.00     0.12       0.00    -0.03
 42  10.3328      0.00     0.03       0.00     0.03
 43  10.3329      0.00     0.18       0.00    -0.12
 44  10.3329      0.00     0.06       0.00     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.

14YY49    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        31.538    31.537    31.538
ecceobj         0.609     0.609     0.609
incobj         20.380    20.380    20.380
qmin           12.253    12.255    12.263
qmax           53.107    51.831    52.022
amean          31.814    31.588    31.548
amin           30.932    31.053    31.005
amax           32.993    32.259    32.202
emean           0.604     0.597     0.599
emin            0.589     0.575     0.583
emax            0.615     0.615     0.616
imean          21.400    21.820    21.558
imin           20.159    20.159    20.158
imax           22.484    24.085    22.952
excite_mean     0.706     0.704     0.703
fracstop        0.021     0.022     0.017
cjmean          2.477     2.484     2.485

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       228.1     216.0     215.7
kozaiamp         38.8      23.9      22.9