Orbit Fit and Astrometric record for 15RS280

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: 15RS280   
# Created Fri Dec  3 02:13:31 2021
# Orbit generated from Bernstein formalism
# Fitting     33 observations of     33
# Arc:   2.36y
# First observation: 2015/07/14
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000106   0.021826  -0.000003  -0.013596   0.025310   0.000000
# Chi-squared of fit:    14.55 DOF:     60 RMS:  0.12
# Min/Max residuals:    -0.34    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.317880E-05  2.155665E-02 -8.568187E-06 -1.347131E-02  2.517262E-02  6.538293E-04
# Covariance matrix:
  1.6022E-13  2.2020E-14  9.3771E-15 -6.3224E-14  1.4893E-13  2.5538E-12
  2.2020E-14  2.4489E-13  2.7555E-14 -1.5905E-13  2.2184E-13  6.3710E-12
  9.3771E-15  2.7555E-14  9.9019E-14 -1.1203E-13  3.4228E-14  1.7767E-12
 -6.3224E-14 -1.5905E-13 -1.1203E-13  3.3506E-13 -2.0634E-13 -9.5096E-12
  1.4893E-13  2.2184E-13  3.4228E-14 -2.0634E-13  3.4638E-13  8.2859E-12
  2.5538E-12  6.3710E-12  1.7767E-12 -9.5096E-12  8.2859E-12  3.7918E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.046884    8.591303    0.990546    0.012486   -0.232589  2457218.104959
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:            7.13041 +/-     1.426
Argument of Peri:      166.70037 +/-     1.515
Long of Asc Node:      192.00674 +/-     0.000
Inclination:            32.10456 +/-     0.001
Eccentricity:         0.02945543 +/-    0.0001
Semi-Major Axis:     41.16973355 +/-    0.0025
Time of Perihelion: 2455299.4268 +/-     382.3
Perihelion:          39.95706138 +/-    0.0061
Aphelion:            42.38240572 +/-    0.0061
Period (y)              264.1650 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.59917282 +/-    0.0009
Ecliptic Y            4.98164468 +/-    0.0001
Ecliptic Z            2.11125170 +/-    0.0000
Ecliptic XDOT        -0.00020531 +/-    0.0000
Ecliptic YDOT         0.00233422 +/-    0.0000
Ecliptic ZDOT        -0.00145927 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.96709466 +/-    0.0009
Geocenter to KBO     39.72569694 +/-    0.0009
# Hcoef:  8.83

The following table shows the complete astrometric record for 15RS280. 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 (15RS280) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.60417  00 26 44.302  +06 12 21.93  24.5r 15RS280   568  C~2nvr      
2015 07  19.58328  00 26 41.175  +06 11 44.99  25.2r 15RS280   568  C~2nvr      
2015 08  13.47579  00 25 54.448  +06 05 06.05  24.4r 15RS280   568  C~2nvr      
2015 08  13.52928  00 25 54.302  +06 05 05.13  24.4r 15RS280   568  C~2nvr      
2015 08  19.53845  00 25 36.030  +06 02 38.47  23.7r 15RS280   568  C~2nvr      
2015 08  19.57979  00 25 35.886  +06 02 37.38  24.6r 15RS280   568  C~2nvr      
2015 08  20.41299  00 25 33.172  +06 02 15.76  25.1r 15RS280   568  C~2nvr      
2015 08  20.46234  00 25 33.010  +06 02 14.57  24.7r 15RS280   568  C~2nvr      
2015 09  07.55863  00 24 24.490  +05 53 10.16  25.1w 15RS280   568  C~2nvr      
2015 09  09.38473  00 24 16.776  +05 52 08.44  24.6r 15RS280   568  C~2nvr      
2015 09  09.42909  00 24 16.574  +05 52 06.88  25.1r 15RS280   568  C~2nvr      
2015 09  09.47005  00 24 16.400  +05 52 05.43  24.6r 15RS280   568  C~2nvr      
2015 09  10.49367  00 24 12.008  +05 51 30.50  25.4w 15RS280   568  C~2nvr      
2015 09  18.45161  00 23 36.842  +05 46 48.13  26.8w 15RS280   568  C~2nvr      
2015 10  08.33928  00 22 05.501  +05 34 15.05  24.8w 15RS280   568  C~2nvr      
2015 10  08.39191  00 22 05.263  +05 34 12.99  25.2w 15RS280   568  C~2nvr      
2015 11  10.43470  00 19 52.993  +05 14 13.41  24.9w 15RS280   568  C~2nvr      
2015 12  08.23353  00 18 55.247  +05 02 19.46  24.9w 15RS280   568  C~2nvr      
2016 01  01.29622  00 19 01.551  +04 57 51.99  25.1w 15RS280   568  C~2nvr      
2016 09  05.48640  00 30 22.533  +05 40 22.85        15RS280   568  C~2nvr      
2016 09  05.49854  00 30 22.474  +05 40 22.34        15RS280   568  C~2nvr      
2016 09  06.44060  00 30 18.619  +05 39 51.16        15RS280   568  C~2nvr      
2016 09  06.45273  00 30 18.565  +05 39 50.33        15RS280   568  C~2nvr      
2016 09  26.45157  00 28 50.057  +05 27 52.73  24.8w 15RS280   568  C~2nvr      
2016 09  26.45563  00 28 50.031  +05 27 52.63  25.1w 15RS280   568  C~2nvr      
2016 10  30.35270  00 26 20.778  +05 06 41.51        15RS280   568  C~2nvr      
2016 11  03.31006  00 26 05.926  +05 04 24.78  25.4w 15RS280   568  C~2nvr      
2016 11  03.36248  00 26 05.727  +05 04 22.99  25.1w 15RS280   568  C~2nvr      
2016 12  24.26796  00 24 38.505  +04 45 31.22  25.5w 15RS280   568  C~2nvr      
2017 01  02.25760  00 24 47.481  +04 44 46.00  25.2w 15RS280   568  C~2nvr      
2017 01  26.24327  00 25 48.147  +04 46 47.97  24.8w 15RS280   568  C~2nvr      
2017 09  22.50999  00 35 02.033  +05 16 46.77  25.0w 15RS280   568  C~2nvr      
2017 11  22.36828  00 30 57.915  +04 41 26.42        15RS280   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     0.07       0.00     0.02
     2   0.0136    -57.44    -0.00     -15.48     0.04
     3   0.0818   -855.32    -0.30    -105.99     0.04
     4   0.0819   -857.69    -0.04    -105.98     0.25
     5   0.0984  -1166.04     0.08    -132.70    -0.13
     6   0.0985  -1168.44    -0.01    -132.85    -0.12
     7   0.1008  -1214.18    -0.04    -136.66    -0.02
     8   0.1009  -1216.87     0.06    -136.80     0.05
     9   0.1505  -2371.26     0.01    -231.43     0.05
    10   0.1555  -2501.42     0.08    -242.43    -0.01
    11   0.1556  -2504.81    -0.06    -242.67    -0.01
    12   0.1557  -2507.77    -0.02    -242.97    -0.08
    13   0.1585  -2581.79     0.04    -249.04     0.04
    14   0.1803  -3175.64     0.03    -300.00     0.06
    15   0.2347  -4726.59    -0.08    -449.56    -0.01
    16   0.2349  -4730.67    -0.00    -450.04    -0.08
    17   0.3253  -7022.04    -0.01    -764.71    -0.34
    18   0.4014  -8099.30     0.14   -1075.99    -0.01
    19   0.4673  -8119.60    -0.08   -1359.07     0.16
    20   1.1468   2233.77     0.11   -3049.11     0.11
    21   1.1469   2232.76    -0.04   -3049.23     0.06
    22   1.1494   2167.57     0.19   -3055.21     0.07
    23   1.1495   2166.50    -0.02   -3055.65    -0.31
    24   1.2042    668.98     0.05   -3193.78    -0.08
    25   1.2042    668.58    -0.02   -3193.72     0.01
    26   1.2971  -1881.98    -0.21   -3480.26     0.40
    27   1.3079  -2139.94     0.08   -3518.02     0.03
    28   1.3080  -2143.38     0.03   -3518.49     0.03
    29   1.4474  -3789.30    -0.06   -4041.70    -0.24
    30   1.4720  -3684.01     0.09   -4136.44     0.09
    31   1.5377  -2802.67     0.07   -4383.72    -0.01
    32   2.1928   5516.84    -0.02   -5994.82    -0.09
    33   2.3594   1325.97    -0.11   -6509.64     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.

15RS280    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.501    41.510    41.491
ecceobj         0.037     0.038     0.037
incobj         31.960    31.961    31.960
qmin           39.415    39.393    39.419
qmax           43.404    43.474    43.377
amean          41.329    41.339    41.320
amin           41.021    41.030    41.017
amax           41.643    41.651    41.636
emean           0.033     0.034     0.033
emin            0.024     0.024     0.024
emax            0.043     0.044     0.043
imean          32.085    32.086    32.085
imin           31.808    31.807    31.817
imax           32.387    32.386    32.370
excite_mean     0.532     0.532     0.532
fracstop        1.000     1.000     1.000
cjmean          2.713     2.713     2.713

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       187.6     189.1     186.0
kozaiamp        180.0     180.0     180.0