Orbit Fit and Astrometric record for 15RR280

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: 15RR280   
# Created Thu Feb 21 02:10:22 2019
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   39
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000109   0.021927  -0.000024  -0.014308   0.025578   0.000000
# Chi-squared of fit:     5.89 DOF:   72 RMS:  0.07
# Min/Max residuals:    -0.15    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.296581E-05  2.147599E-02 -8.679340E-06 -1.413156E-02  2.521632E-02  2.008059E-03
# Covariance matrix:
  1.3996E-13  1.9515E-14  8.8618E-15 -5.0399E-14  1.1981E-13  1.7086E-12
  1.9515E-14  1.9594E-13  3.0814E-14 -1.4196E-13  1.8421E-13  4.7428E-12
  8.8618E-15  3.0814E-14  9.1675E-14 -1.0065E-13  3.5888E-14  1.5559E-12
 -5.0399E-14 -1.4196E-13 -1.0065E-13  2.6618E-13 -1.7394E-13 -6.6711E-12
  1.1981E-13  1.8421E-13  3.5888E-14 -1.7394E-13  2.7464E-13  5.8335E-12
  1.7086E-12  4.7428E-12  1.5559E-12 -6.6711E-12  5.8335E-12  2.2159E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.831730    8.348562    1.009627   -0.005664    0.116402  2457197.060258
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           48.50456 +/-     0.207
Argument of Peri:      119.88038 +/-     0.269
Long of Asc Node:      191.20015 +/-     0.000
Inclination:            33.38903 +/-     0.001
Eccentricity:         0.07063698 +/-    0.0005
Semi-Major Axis:     41.36045467 +/-    0.0037
Time of Perihelion: 2444099.9945 +/-      55.9
Perihelion:          38.43887701 +/-    0.0211
Aphelion:            44.28203233 +/-    0.0212
Period (y)              266.0028 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.21651980 +/-    0.0008
Ecliptic Y            4.73544918 +/-    0.0001
Ecliptic Z            1.95887820 +/-    0.0000
Ecliptic XDOT        -0.00005057 +/-    0.0000
Ecliptic YDOT         0.00234342 +/-    0.0000
Ecliptic ZDOT        -0.00152162 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.54993183 +/-    0.0008
Geocenter to KBO     39.65685246 +/-    0.0008
# Hcoef:  8.14

The following table shows the complete astrometric record for 15RR280. 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 (15RR280) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.55948  00 26 11.113  +05 54 45.29  24.3r 15RR280   568  C~2nvr      
2015 07  14.60417  00 26 22.531  +05 54 34.13  24.1r 15RR280   568  C~2nvr      
2015 07  19.58328  00 26 19.362  +05 53 52.94  24.1r 15RR280   568  C~2nvr      
2015 08  13.47579  00 25 32.126  +05 46 50.44  24.2r 15RR280   568  C~2nvr      
2015 08  13.52928  00 25 31.963  +05 46 49.16  23.7r 15RR280   568  C~2nvr      
2015 08  19.57979  00 25 13.357  +05 44 15.94  24.2r 15RR280   568  C~2nvr      
2015 08  19.60849  00 25 13.260  +05 44 15.12  24.7r 15RR280   568  C~2nvr      
2015 08  20.41299  00 25 10.602  +05 43 53.46  24.0r 15RR280   568  C~2nvr      
2015 08  20.46234  00 25 10.439  +05 43 52.24  24.1r 15RR280   568  C~2nvr      
2015 09  07.55863  00 24 01.250  +05 34 30.62  24.0w 15RR280   568  C~2nvr      
2015 09  09.38473  00 23 53.458  +05 33 27.24  24.0r 15RR280   568  C~2nvr      
2015 09  09.42909  00 23 53.262  +05 33 25.74  24.1r 15RR280   568  C~2nvr      
2015 09  09.47005  00 23 53.082  +05 33 24.24  24.0r 15RR280   568  C~2nvr      
2015 09  10.49367  00 23 48.652  +05 32 48.26  24.2w 15RR280   568  C~2nvr      
2015 09  18.45161  00 23 13.166  +05 27 58.80  24.1w 15RR280   568  C~2nvr      
2015 10  08.32880  00 21 41.113  +05 15 10.64  24.1w 15RR280   568  C~2nvr      
2015 10  08.38143  00 21 40.858  +05 15 08.60  23.9w 15RR280   568  C~2nvr      
2015 10  09.29849  00 21 36.662  +05 14 32.66  24.2w 15RR280   568  C~2nvr      
2015 11  10.41159  00 19 27.714  +04 54 52.13  24.4w 15RR280   568  C~2nvr      
2015 11  15.27884  00 19 13.114  +04 52 19.30  24.1w 15RR280   568  C~2nvr      
2015 12  08.22307  00 18 29.814  +04 42 52.04  24.4w 15RR280   568  C~2nvr      
2016 01  01.29102  00 18 36.610  +04 38 25.60  24.3w 15RR280   568  C~2nvr      
2016 09  05.49854  00 30 04.528  +05 19 24.57        15RR280   568  C~2nvr      
2016 09  06.45273  00 30 00.578  +05 18 51.97        15RR280   568  C~2nvr      
2016 09  06.49401  00 30 00.400  +05 18 50.62        15RR280   568  C~2nvr      
2016 09  26.45157  00 28 31.378  +05 06 37.61  24.1w 15RR280   568  C~2nvr      
2016 09  26.45563  00 28 31.356  +05 06 37.43  24.0w 15RR280   568  C~2nvr      
2016 10  30.35270  00 26 01.134  +04 45 06.71        15RR280   568  C~2nvr      
2016 11  03.31006  00 25 46.170  +04 42 48.75        15RR280   568  C~2nvr      
2016 11  03.36248  00 25 45.973  +04 42 46.97        15RR280   568  C~2nvr      
2016 12  24.26796  00 24 18.703  +04 23 52.47  24.1w 15RR280   568  C~2nvr      
2016 12  24.27431  00 24 18.713  +04 23 52.44  24.3w 15RR280   568  C~2nvr      
2017 01  02.25760  00 24 27.890  +04 23 08.70  24.3w 15RR280   568  C~2nvr      
2017 01  02.26396  00 24 27.889  +04 23 08.66  24.5w 15RR280   568  C~2nvr      
2017 01  26.24327  00 25 29.357  +04 25 16.72  24.0w 15RR280   568  C~2nvr      
2017 09  15.44482  00 35 19.615  +04 57 42.25  24.0w 15RR280   568  C~2nvr      
2017 09  22.50999  00 34 47.815  +04 53 19.24  23.8w 15RR280   568  C~2nvr      
2017 11  22.36828  00 30 42.403  +04 17 34.74  24.1w 15RR280   568  C~2nvr      
2017 12  23.30656  00 30 07.271  +04 08 36.90  24.1w 15RR280   568  C~2nvr      

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     0.10       0.00    -0.04
  2   0.0576    152.04    -0.03     -77.65     0.02
  3   0.0712     92.32     0.06     -96.77     0.15
  4   0.1394   -722.20     0.02    -205.81    -0.10
  5   0.1395   -724.94    -0.06    -206.02    -0.07
  6   0.1561  -1040.61     0.13    -236.76    -0.09
  7   0.1562  -1042.26     0.10    -236.94    -0.13
  8   0.1584  -1087.27    -0.11    -241.12     0.04
  9   0.1585  -1089.98     0.01    -241.27     0.12
 10   0.2081  -2260.86    -0.08    -347.61     0.07
 11   0.2131  -2392.80    -0.08    -359.67     0.04
 12   0.2132  -2396.08    -0.07    -359.89     0.10
 13   0.2133  -2399.15    -0.10    -360.20     0.03
 14   0.2161  -2474.14    -0.05    -367.00     0.02
 15   0.2379  -3075.44    -0.07    -422.51    -0.01
 16   0.2923  -4642.77     0.07    -581.60    -0.05
 17   0.2925  -4647.08    -0.04    -581.96     0.03
 18   0.2950  -4718.91     0.08    -590.04     0.03
 19   0.3829  -6958.01     0.01    -906.90    -0.07
 20   0.3962  -7219.34     0.12    -960.24    -0.15
 21   0.4590  -8040.14     0.01   -1222.95    -0.00
 22   0.5249  -8053.18    -0.07   -1508.04     0.06
 23   1.2045   2364.07    -0.01   -3324.75    -0.02
 24   1.2071   2296.98     0.00   -3331.45    -0.09
 25   1.2072   2294.00    -0.01   -3331.65    -0.02
 26   1.2619    782.59     0.01   -3480.60    -0.01
 27   1.2619    782.22    -0.04   -3480.64    -0.01
 28   1.3547  -1790.58     0.13   -3779.07     0.01
 29   1.3655  -2050.68     0.07   -3817.27    -0.01
 30   1.3656  -2054.09     0.08   -3817.74     0.00
 31   1.5050  -3702.36    -0.15   -4343.08     0.03
 32   1.5050  -3702.23    -0.05   -4343.17     0.01
 33   1.5296  -3593.51     0.03   -4437.76     0.06
 34   1.5296  -3593.54    -0.11   -4437.79     0.09
 35   1.5953  -2698.33     0.08   -4684.34     0.00
 36   2.2310   6183.87    -0.07   -6376.30     0.07
 37   2.2504   5642.87     0.05   -6431.62    -0.04
 38   2.4170   1422.37    -0.04   -6959.85     0.00
 39   2.5017    726.96     0.05   -7247.27    -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.

15RR280    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.689    41.703    41.675
ecceobj         0.076     0.077     0.075
incobj         33.244    33.244    33.243
qmin           38.018    37.952    38.033
qmax           45.241    45.353    45.189
amean          41.524    41.539    41.510
amin           41.213    41.223    41.181
amax           41.851    41.872    41.840
emean           0.070     0.071     0.069
emin            0.059     0.060     0.058
emax            0.082     0.083     0.080
imean          33.358    33.360    33.357
imin           33.078    33.082    33.084
imax           33.623    33.637    33.626
excite_mean     0.554     0.554     0.554
fracstop        1.000     1.000     1.000
cjmean          2.682     2.682     2.682

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       181.4     181.6     181.8
kozaiamp        180.0     180.0     180.0