Orbit Fit and Astrometric record for 15RB279

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: 15RB279   
# Created Fri Feb 22 02:10:26 2019
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   32
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000059   0.041154  -0.000030  -0.014694   0.030604   0.000000
# Chi-squared of fit:     3.42 DOF:   58 RMS:  0.06
# Min/Max residuals:    -0.11    0.15
# Exact a, adot, b, bdot, g, gdot:
  2.140775E-05  3.997220E-02 -7.296137E-06 -1.440694E-02  2.970786E-02  1.772422E-04
# Covariance matrix:
  1.5838E-13 -2.7093E-14  2.9960E-16 -6.3795E-15  8.9384E-14  2.3803E-13
 -2.7093E-14  5.2278E-13  5.5645E-14 -2.1789E-13  2.8809E-13  7.1079E-12
  2.9960E-16  5.5645E-14  1.1251E-13 -1.0117E-13  2.9977E-14  9.5542E-13
 -6.3795E-15 -2.1789E-13 -1.0117E-13  1.9772E-13 -1.2377E-13 -3.6894E-12
  8.9384E-14  2.8809E-13  2.9977E-14 -1.2377E-13  2.6287E-13  4.0741E-12
  2.3803E-13  7.1079E-12  9.5542E-13 -3.6894E-12  4.0741E-12  1.2006E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.349778   10.372354    1.004965   -0.003474    0.151509  2457197.094148
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:          359.63975 +/-     0.004
Argument of Peri:      179.38712 +/-     0.035
Long of Asc Node:      192.41153 +/-     0.000
Inclination:            19.85677 +/-     0.000
Eccentricity:         0.73239450 +/-    0.0001
Semi-Major Axis:    125.17165539 +/-    0.0282
Time of Perihelion: 2457702.3680 +/-       5.2
Perihelion:          33.49662295 +/-    0.0104
Aphelion:           216.84668783 +/-    0.0493
Period (y)             1400.4487 +/-      0.47
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.13018995 +/-    0.0006
Ecliptic Y            5.04354834 +/-    0.0001
Ecliptic Z            0.79272810 +/-    0.0000
Ecliptic XDOT        -0.00061888 +/-    0.0000
Ecliptic YDOT         0.00362594 +/-    0.0000
Ecliptic ZDOT        -0.00132691 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.52126614 +/-    0.0006
Geocenter to KBO     33.66112154 +/-    0.0006
# Hcoef:  9.02

The following table shows the complete astrometric record for 15RB279. 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 (15RB279) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.59337  00 36 00.257  +05 20 53.86  24.1r 15RB279   568  C~2lVT      
2015 07  14.54596  00 36 30.026  +05 21 52.45  24.4r 15RB279   568  C~2lVT      
2015 07  19.51085  00 36 30.210  +05 21 21.85  24.1r 15RB279   568  C~2lVT      
2015 08  11.49932  00 35 58.240  +05 15 23.41  24.2r 15RB279   568  C~2lVT      
2015 08  11.55875  00 35 58.082  +05 15 22.03  24.1r 15RB279   568  C~2lVT      
2015 09  08.40498  00 34 18.671  +05 01 16.08  24.2r 15RB279   568  C~2lVT      
2015 09  08.50910  00 34 18.202  +05 01 12.25  24.0r 15RB279   568  C~2lVT      
2015 09  08.55273  00 34 17.998  +05 01 10.66  24.3r 15RB279   568  C~2lVT      
2015 09  09.52831  00 34 13.626  +05 00 34.70  24.2w 15RB279   568  C~2lVT      
2015 09  10.46916  00 34 09.371  +04 59 59.76  24.3w 15RB279   568  C~2lVT      
2015 10  03.38583  00 32 17.392  +04 44 43.29  24.5w 15RB279   568  C~2lVT      
2015 10  07.35453  00 31 57.409  +04 41 58.36  24.0r 15RB279   568  C~2lVT      
2015 10  07.40769  00 31 57.134  +04 41 56.32  24.1r 15RB279   568  C~2lVT      
2015 11  07.24974  00 29 37.408  +04 21 53.34  24.4w 15RB279   568  C~2lVT      
2015 11  07.30253  00 29 37.205  +04 21 51.46  24.6w 15RB279   568  C~2lVT      
2015 12  07.32615  00 28 24.345  +04 08 42.34  24.6w 15RB279   568  C~2lVT      
2016 01  01.25515  00 28 35.573  +04 05 24.05  24.6w 15RB279   568  C~2lVT      
2016 09  05.53675  00 44 31.772  +05 10 59.82  24.5w 15RB279   568  C~2lVT      
2016 09  05.54080  00 44 31.757  +05 10 59.75  24.3w 15RB279   568  C~2lVT      
2016 09  07.47613  00 44 23.495  +05 09 50.38  24.4w 15RB279   568  C~2lVT      
2016 09  07.48017  00 44 23.481  +05 09 50.25  24.5w 15RB279   568  C~2lVT      
2016 09  07.52244  00 44 23.298  +05 09 48.69  24.1w 15RB279   568  C~2lVT      
2016 09  26.55282  00 42 53.487  +04 57 29.21  24.0w 15RB279   568  C~2lVT      
2016 11  04.28299  00 39 47.903  +04 31 50.93  24.3w 15RB279   568  C~2lVT      
2016 11  04.34222  00 39 47.662  +04 31 48.86  24.3w 15RB279   568  C~2lVT      
2016 12  29.26158  00 38 18.914  +04 13 52.93  24.3w 15RB279   568  C~2lVT      
2017 01  03.23211  00 38 26.839  +04 13 58.31  24.5w 15RB279   568  C~2lVT      
2017 01  27.24379  00 39 43.597  +04 18 32.66  24.5w 15RB279   568  C~2lVT      
2017 01  28.23958  00 39 48.080  +04 18 52.66  24.7w 15RB279   568  C~2lVT      
2017 09  15.43553  00 53 53.530  +05 12 57.20  24.3w 15RB279   568  C~2lVT      
2017 09  22.50070  00 53 20.142  +05 08 21.30  24.1w 15RB279   568  C~2lVT      
2017 12  23.29251  00 48 03.225  +04 22 14.64  24.4w 15RB279   568  C~2lVT      

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    -0.03       0.00    -0.08
  2   0.0574    431.85    -0.05    -120.80    -0.04
  3   0.0710    422.36     0.10    -150.02     0.02
  4   0.1339   -157.57     0.01    -292.02     0.14
  5   0.1341   -160.28    -0.05    -292.36     0.15
  6   0.2103  -1858.53    -0.04    -486.03     0.02
  7   0.2106  -1866.48     0.03    -486.79    -0.03
  8   0.2107  -1869.91    -0.03    -487.05     0.00
  9   0.2134  -1944.12    -0.03    -494.40    -0.03
 10   0.2160  -2016.33    -0.01    -501.49    -0.02
 11   0.2787  -3916.07    -0.02    -684.52    -0.07
 12   0.2896  -4255.77     0.07    -718.30    -0.09
 13   0.2897  -4260.35     0.10    -718.55     0.08
 14   0.3741  -6656.63     0.03    -999.21    -0.02
 15   0.3743  -6660.17    -0.01    -999.74    -0.08
 16   0.4565  -7974.95    -0.11   -1294.03     0.09
 17   0.5247  -7898.99     0.04   -1542.78     0.01
 18   1.2045   6801.38    -0.04   -3538.77    -0.04
 19   1.2045   6801.15     0.02   -3538.75     0.01
 20   1.2098   6660.28    -0.04   -3554.48     0.01
 21   1.2098   6660.04     0.02   -3554.52     0.00
 22   1.2099   6656.91     0.06   -3554.89    -0.05
 23   1.2620   5131.37    -0.06   -3711.86     0.00
 24   1.3681   1975.01     0.01   -4042.28     0.03
 25   1.3682   1970.88     0.10   -4042.78     0.01
 26   1.5186    327.66    -0.01   -4512.49    -0.04
 27   1.5322    438.85     0.03   -4554.06    -0.03
 28   1.5979   1603.02    -0.07   -4751.86    -0.11
 29   1.6007   1672.58    -0.04   -4759.73     0.12
 30   2.2309  14607.28     0.05   -6699.10     0.04
 31   2.2503  14037.66    -0.05   -6760.36     0.05
 32   2.5016   8578.91     0.01   -7470.31    -0.04

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.

15RB279    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       130.020   130.158   129.883
ecceobj         0.742     0.743     0.742
incobj         19.792    19.792    19.792
qmin           31.044    31.265    31.284
qmax          256.530   237.513   237.441
amean         131.147   118.809   126.949
amin          121.282   110.957   120.104
amax          144.962   135.519   135.351
emean           0.750     0.724     0.741
emin            0.720     0.700     0.719
emax            0.770     0.754     0.756
imean          17.946    18.208    18.319
imin           16.452    17.007    17.026
imax           20.137    20.142    20.095
excite_mean     0.811     0.789     0.805
fracstop        1.000     1.000     1.000
cjmean          2.856     2.855     2.856

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       273.2     272.9     260.6
kozaiamp         90.1      87.9      80.2