Orbit Fit and Astrometric record for 15RL278

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: 15RL278   
# Created Tue Apr 23 01:10:44 2019
# Orbit generated from Bernstein formalism
# Fitting   42 observations of   42
# Arc:   2.44y
# First observation: 2015/07/14
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000044   0.032909   0.000008   0.010359   0.027316   0.000000
# Chi-squared of fit:     7.58 DOF:   78 RMS:  0.08
# Min/Max residuals:    -0.31    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.906514E-05  3.227693E-02  5.371790E-06  1.022629E-02  2.681421E-02 -3.049795E-03
# Covariance matrix:
  1.5554E-13  1.2774E-14 -5.7708E-15  1.9595E-14  1.0970E-13  8.7518E-13
  1.2774E-14  3.0883E-13 -3.5990E-14  1.2659E-13  2.0825E-13  5.6133E-12
 -5.7708E-15 -3.5990E-14  9.2919E-14 -7.7204E-14 -2.5675E-14 -8.8239E-13
  1.9595E-14  1.2659E-13 -7.7204E-14  1.3183E-13  8.9571E-14  3.1140E-12
  1.0970E-13  2.0825E-13 -2.5675E-14  8.9571E-14  2.2847E-13  3.9784E-12
  8.7518E-13  5.6133E-12 -8.8239E-13  3.1140E-12  3.9784E-12  1.3799E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.075346    9.895958    0.995822    0.000375   -0.209271  2457218.042659
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          354.94659 +/-     0.014
Argument of Peri:       19.49337 +/-     0.054
Long of Asc Node:        8.13985 +/-     0.000
Inclination:            17.65986 +/-     0.000
Eccentricity:         0.53206334 +/-    0.0002
Semi-Major Axis:     78.61029114 +/-    0.0206
Time of Perihelion: 2460784.0506 +/-       9.5
Perihelion:          36.78463681 +/-    0.0161
Aphelion:           120.43594548 +/-    0.0341
Period (y)              696.9912 +/-      0.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.11246413 +/-    0.0007
Ecliptic Y            5.46464302 +/-    0.0001
Ecliptic Z            0.04929691 +/-    0.0000
Ecliptic XDOT        -0.00087679 +/-    0.0000
Ecliptic YDOT         0.00318655 +/-    0.0000
Ecliptic ZDOT         0.00104380 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.51266116 +/-    0.0006
Geocenter to KBO     37.29365528 +/-    0.0007
# Hcoef:  8.88

The following table shows the complete astrometric record for 15RL278. 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 (15RL278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.54187  00 36 15.345  +03 59 21.09  24.7r 15RL278   568  C~2lVQ      
2015 07  19.50673  00 36 13.110  +03 59 38.52  24.9r 15RL278   568  C~2lVQ      
2015 08  11.49525  00 35 33.409  +03 57 53.98  24.7r 15RL278   568  C~2lVQ      
2015 08  11.53687  00 35 33.295  +03 57 53.38  24.4r 15RL278   568  C~2lVQ      
2015 09  08.40090  00 33 51.050  +03 50 01.44  24.1r 15RL278   568  C~2lVQ      
2015 09  08.50503  00 33 50.580  +03 49 59.18  24.6r 15RL278   568  C~2lVQ      
2015 09  08.54864  00 33 50.377  +03 49 58.15  24.3r 15RL278   568  C~2lVQ      
2015 09  09.52420  00 33 46.010  +03 49 36.50  24.8w 15RL278   568  C~2lVQ      
2015 09  10.46510  00 33 41.759  +03 49 15.37  24.8w 15RL278   568  C~2lVQ      
2015 09  16.45310  00 33 13.907  +03 46 55.95  24.7w 15RL278   568  C~2lVQ      
2015 10  03.37987  00 31 50.873  +03 39 53.00  24.0w 15RL278   568  C~2lVQ      
2015 10  07.34557  00 31 31.146  +03 38 11.94  24.2r 15RL278   568  C~2lVQ      
2015 10  07.36748  00 31 31.051  +03 38 11.28  24.5r 15RL278   568  C~2lVQ      
2015 10  07.40358  00 31 30.852  +03 38 10.48  24.3r 15RL278   568  C~2lVQ      
2015 11  07.24449  00 29 11.470  +03 26 27.99  24.8w 15RL278   568  C~2lVQ      
2015 11  07.29726  00 29 11.261  +03 26 27.10  24.6w 15RL278   568  C~2lVQ      
2015 11  10.38064  00 28 59.850  +03 25 32.55  24.8w 15RL278   568  C~2lVQ      
2015 12  07.32092  00 27 51.986  +03 20 55.95  24.8w 15RL278   568  C~2lVQ      
2016 01  01.24995  00 27 50.412  +03 23 08.23  24.9w 15RL278   568  C~2lVQ      
2016 09  05.53675  00 40 01.399  +05 08 18.60  24.7w 15RL278   568  C~2lVQ      
2016 09  05.58308  00 40 01.186  +05 08 17.58  24.8w 15RL278   568  C~2lVQ      
2016 09  06.53219  00 39 57.082  +05 07 58.16  25.0w 15RL278   568  C~2lVQ      
2016 09  06.57428  00 39 56.899  +05 07 57.29  24.8w 15RL278   568  C~2lVQ      
2016 09  07.47613  00 39 52.951  +05 07 38.51  24.8w 15RL278   568  C~2lVQ      
2016 09  07.52244  00 39 52.741  +05 07 37.49  24.5w 15RL278   568  C~2lVQ      
2016 09  27.48878  00 38 17.928  +04 59 50.24  24.4w 15RL278   568  C~2lVQ      
2016 11  03.39726  00 35 22.496  +04 44 56.20  24.8w 15RL278   568  C~2lVQ      
2016 11  03.42043  00 35 22.395  +04 44 55.57  24.5w 15RL278   568  C~2lVQ      
2016 11  03.49709  00 35 22.071  +04 44 54.09  24.5w 15RL278   568  C~2lVQ      
2016 11  04.26545  00 35 18.966  +04 44 38.41  24.8w 15RL278   568  C~2lVQ      
2016 11  04.32471  00 35 18.716  +04 44 37.17  24.6w 15RL278   568  C~2lVQ      
2016 12  29.23783  00 33 38.577  +04 38 30.83  25.0w 15RL278   568  C~2lVQ      
2017 01  03.20730  00 33 43.954  +04 39 28.21  24.6w 15RL278   568  C~2lVQ      
2017 01  03.25288  00 33 44.003  +04 39 28.70  24.8w 15RL278   568  C~2lVQ      
2017 01  27.23800  00 34 44.626  +04 47 46.99  24.4w 15RL278   568  C~2lVQ      
2017 01  28.23385  00 34 48.317  +04 48 15.12  24.4w 15RL278   568  C~2lVQ      
2017 01  30.24057  00 34 56.028  +04 49 13.60  25.4w 15RL278   568  C~2lVQ      
2017 09  15.43089  00 45 23.092  +06 22 46.03  24.8w 15RL278   568  C~2lVQ      
2017 09  22.49605  00 44 49.218  +06 20 02.99  24.2w 15RL278   568  C~2lVQ      
2017 11  22.36083  00 40 17.825  +05 57 07.85  25.1w 15RL278   568  C~2lVQ      
2017 12  23.28786  00 39 31.092  +05 54 12.19  24.5w 15RL278   568  C~2lVQ      
2017 12  23.30180  00 39 31.103  +05 54 12.22  25.2w 15RL278   568  C~2lVQ      

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     0.14
  2   0.0136    -23.91     0.06      29.17    -0.04
  3   0.0765   -611.29    -0.09     166.46     0.05
  4   0.0766   -613.09    -0.11     166.57    -0.10
  5   0.1529  -2205.61    -0.03     334.37     0.04
  6   0.1532  -2212.97     0.03     335.06     0.05
  7   0.1533  -2216.17    -0.06     335.31     0.01
  8   0.1560  -2284.78     0.01     341.12    -0.02
  9   0.1586  -2351.60    -0.01     346.74    -0.04
 10   0.1750  -2789.75    -0.08     382.64    -0.07
 11   0.2213  -4099.14     0.12     483.37    -0.07
 12   0.2322  -4410.50    -0.01     506.86     0.05
 13   0.2322  -4412.07     0.17     506.81    -0.14
 14   0.2323  -4415.13    -0.01     507.25     0.07
 15   0.3168  -6611.39     0.03     684.78    -0.05
 16   0.3169  -6614.62     0.00     685.20     0.04
 17   0.3254  -6793.33     0.01     702.53     0.01
 18   0.3991  -7837.49    -0.06     849.78    -0.01
 19   0.4674  -7806.86    -0.02     980.71     0.01
 20   1.1471   4733.08     0.07    2480.75     0.07
 21   1.1473   4729.75    -0.09    2481.06     0.06
 22   1.1499   4665.69     0.03    2487.20     0.06
 23   1.1500   4662.83     0.09    2487.47     0.03
 24   1.1525   4601.17     0.02    2493.28     0.06
 25   1.1526   4597.88    -0.02    2493.57     0.02
 26   1.2072   3110.82     0.03    2618.77     0.02
 27   1.3083    347.91     0.03    2825.88     0.02
 28   1.3084    346.28    -0.08    2825.89    -0.09
 29   1.3086    341.24    -0.10    2826.43     0.03
 30   1.3107    292.39     0.05    2830.26     0.02
 31   1.3108    288.47    -0.02    2830.59     0.01
 32   1.4612  -1232.18    -0.02    3082.73    -0.05
 33   1.4748  -1135.68     0.06    3103.84     0.10
 34   1.4749  -1134.81    -0.10    3104.00     0.05
 35   1.5406   -105.47    -0.05    3205.56     0.02
 36   1.5433    -43.68    -0.02    3209.73    -0.09
 37   1.5488     85.31     0.25    3218.18    -0.31
 38   2.1735  10908.65     0.03    4722.62    -0.04
 39   2.1929  10378.53    -0.02    4768.98     0.07
 40   2.3595   6107.39     0.07    5082.31    -0.06
 41   2.4442   5396.30    -0.14    5193.54     0.08
 42   2.4442   5396.46     0.01    5193.51    -0.01

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.

15RL278    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        80.360    80.396    80.324
ecceobj         0.542     0.542     0.542
incobj         17.590    17.590    17.590
qmin           35.912    35.549    36.091
qmax          124.688   124.980   124.560
amean          79.000    78.999    79.000
amin           77.762    77.770    77.835
amax           80.687    80.764    80.688
emean           0.534     0.536     0.533
emin            0.524     0.524     0.523
emax            0.545     0.551     0.544
imean          17.828    17.562    17.988
imin           17.486    16.838    17.706
imax           18.182    18.164    18.238
excite_mean     0.616     0.615     0.616
fracstop        1.000     1.000     1.000
cjmean          2.988     2.988     2.988

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       143.6     170.3     119.8
kozaiamp        125.9     160.4     100.3