Orbit Fit and Astrometric record for 15RM278

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: 15RM278   
# Created Thu Dec  9 02:13:26 2021
# Orbit generated from Bernstein formalism
# Fitting     32 observations of     32
# Arc:   2.44y
# First observation: 2015/07/14
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000031   0.027208  -0.000000  -0.011091   0.026705   0.000000
# Chi-squared of fit:     5.49 DOF:     58 RMS:  0.07
# Min/Max residuals:    -0.18    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.592832E-05  2.668387E-02 -6.064581E-06 -1.087545E-02  2.629309E-02 -1.667628E-03
# Covariance matrix:
  1.8211E-13 -1.8086E-14  3.8726E-15 -2.0223E-14  1.3075E-13  9.2547E-13
 -1.8086E-14  3.4580E-13  4.4059E-14 -1.8156E-13  2.0231E-13  8.0682E-12
  3.8726E-15  4.4059E-14  1.0466E-13 -1.0311E-13  2.9178E-14  1.4639E-12
 -2.0223E-14 -1.8156E-13 -1.0311E-13  2.2898E-13 -1.2531E-13 -5.9902E-12
  1.3075E-13  2.0231E-13  2.9178E-14 -1.2531E-13  2.6834E-13  5.6004E-12
  9.2547E-13  8.0682E-12  1.4639E-12 -5.9902E-12  5.6004E-12  2.6593E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.098919   12.213992    1.003396    0.003348   -0.169217  2457218.068079
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          337.86584 +/-     0.117
Argument of Peri:      209.09369 +/-     0.181
Long of Asc Node:      193.38474 +/-     0.000
Inclination:            22.25038 +/-     0.001
Eccentricity:         0.18208174 +/-    0.0003
Semi-Major Axis:     45.62595976 +/-    0.0058
Time of Perihelion: 2464131.6284 +/-      36.6
Perihelion:          37.31830559 +/-    0.0154
Aphelion:            53.93361392 +/-    0.0162
Period (y)              308.1954 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.53919012 +/-    0.0007
Ecliptic Y            7.10030728 +/-    0.0001
Ecliptic Z            0.72923587 +/-    0.0000
Ecliptic XDOT        -0.00073858 +/-    0.0000
Ecliptic YDOT         0.00267723 +/-    0.0000
Ecliptic ZDOT        -0.00113550 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.21173829 +/-    0.0007
Geocenter to KBO     38.03281095 +/-    0.0007
# Hcoef:  8.43

The following table shows the complete astrometric record for 15RM278. 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 (15RM278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.56729  00 43 12.452  +05 50 20.85  24.4r 15RM278   568  C~2lVQ      
2015 07  19.54532  00 43 11.812  +05 49 52.97  24.3r 15RM278   568  C~2lVQ      
2015 08  11.50751  00 42 39.772  +05 44 34.82  24.5r 15RM278   568  C~2lVQ      
2015 08  11.54916  00 42 39.674  +05 44 33.77  24.3r 15RM278   568  C~2lVQ      
2015 09  08.41317  00 41 06.280  +05 32 04.93  23.9r 15RM278   568  C~2lVQ      
2015 09  08.51862  00 41 05.843  +05 32 01.56  24.1r 15RM278   568  C~2lVQ      
2015 09  08.56094  00 41 05.664  +05 32 00.09  24.1r 15RM278   568  C~2lVQ      
2015 09  09.53652  00 41 01.572  +05 31 28.20  24.4w 15RM278   568  C~2lVQ      
2015 09  10.47732  00 40 57.591  +05 30 57.17  24.4w 15RM278   568  C~2lVQ      
2015 09  16.46890  00 40 31.411  +05 27 33.93  24.4w 15RM278   568  C~2lVQ      
2015 10  03.39699  00 39 12.550  +05 17 21.64  24.5w 15RM278   568  C~2lVQ      
2015 10  07.36274  00 38 53.657  +05 14 54.13  24.1r 15RM278   568  C~2lVQ      
2015 10  07.41585  00 38 53.405  +05 14 52.23  24.5r 15RM278   568  C~2lVQ      
2015 11  07.26021  00 36 38.435  +04 56 44.68  24.5w 15RM278   568  C~2lVQ      
2015 11  07.31307  00 36 38.230  +04 56 43.00  24.4w 15RM278   568  C~2lVQ      
2015 11  10.39917  00 36 27.036  +04 55 07.89  24.7w 15RM278   568  C~2lVQ      
2015 12  07.33665  00 35 19.700  +04 44 22.07  24.4w 15RM278   568  C~2lVQ      
2016 01  01.26556  00 35 16.708  +04 40 40.10  24.1w 15RM278   568  C~2lVQ      
2016 09  05.54080  00 48 00.679  +05 34 31.10  24.3w 15RM278   568  C~2lVQ      
2016 09  05.59118  00 48 00.474  +05 34 29.44  24.4w 15RM278   568  C~2lVQ      
2016 09  06.54027  00 47 56.668  +05 33 59.19  23.7w 15RM278   568  C~2lVQ      
2016 09  06.58238  00 47 56.496  +05 33 57.86  24.8w 15RM278   568  C~2lVQ      
2016 09  07.48017  00 47 52.853  +05 33 29.16  24.3w 15RM278   568  C~2lVQ      
2016 09  07.52648  00 47 52.658  +05 33 27.59  24.5w 15RM278   568  C~2lVQ      
2016 09  27.49689  00 46 23.605  +05 21 52.78  24.3w 15RM278   568  C~2lVQ      
2016 11  02.39575  00 43 38.889  +05 00 20.82  24.0r 15RM278   568  C~2lVQ      
2016 11  02.46170  00 43 38.628  +05 00 18.71  24.8r 15RM278   568  C~2lVQ      
2016 11  04.30057  00 43 31.258  +04 59 18.81  24.4w 15RM278   568  C~2lVQ      
2016 11  04.35961  00 43 31.017  +04 59 16.96  24.4w 15RM278   568  C~2lVQ      
2017 09  15.43553  00 54 08.082  +05 30 14.23  24.6w 15RM278   568  C~2lVQ      
2017 09  22.50070  00 53 36.388  +05 26 06.22  24.4w 15RM278   568  C~2lVQ      
2017 12  23.29251  00 48 26.477  +04 43 41.07  24.6w 15RM278   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     0.02       0.00    -0.10
     2   0.0136    -19.69     0.11     -21.93     0.01
     3   0.0765   -584.16    -0.07    -127.85     0.19
     4   0.0766   -585.92    -0.08    -128.24    -0.03
     5   0.1529  -2161.99    -0.05    -271.80     0.09
     6   0.1532  -2169.31     0.13    -272.35     0.07
     7   0.1533  -2172.35     0.11    -272.66    -0.03
     8   0.1560  -2241.06     0.02    -278.07    -0.03
     9   0.1585  -2307.91    -0.05    -283.34    -0.04
    10   0.1750  -2747.25    -0.03    -317.20     0.00
    11   0.2213  -4071.11     0.09    -418.69    -0.03
    12   0.2322  -4388.69    -0.18    -443.64    -0.03
    13   0.2323  -4392.90    -0.07    -443.91     0.00
    14   0.3167  -6676.25     0.05    -651.91    -0.04
    15   0.3169  -6679.73    -0.01    -652.25    -0.04
    16   0.3253  -6871.15     0.04    -673.92     0.21
    17   0.3991  -8052.12    -0.05    -871.77    -0.04
    18   0.4673  -8180.84     0.09   -1058.36     0.02
    19   1.1471   3591.92    -0.00   -2552.05     0.01
    20   1.1472   3588.46    -0.02   -2552.39    -0.05
    21   1.1498   3524.32    -0.04   -2558.16    -0.12
    22   1.1499   3521.44    -0.01   -2558.38    -0.11
    23   1.1524   3460.15    -0.01   -2563.67     0.04
    24   1.1525   3456.85    -0.06   -2563.98    -0.02
    25   1.2072   1961.17     0.05   -2686.31    -0.02
    26   1.3055   -808.82    -0.04   -2916.02     0.02
    27   1.3057   -813.23     0.14   -2916.44     0.00
    28   1.3107   -938.03    -0.04   -2928.56    -0.04
    29   1.3109   -942.07    -0.05   -2928.86     0.02
    30   2.1735   8554.72     0.16   -4918.57     0.02
    31   2.1928   8021.40    -0.07   -4964.16    -0.01
    32   2.4441   2761.00    -0.04   -5513.31     0.11

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.

15RM278    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.118    46.129    46.107
ecceobj         0.189     0.190     0.189
incobj         22.152    22.152    22.152
qmin           36.475    36.278    36.546
qmax           55.499    55.624    55.390
amean          45.783    45.779    45.783
amin           45.379    45.379    45.377
amax           46.240    46.246    46.245
emean           0.189     0.188     0.186
emin            0.175     0.174     0.174
emax            0.201     0.205     0.199
imean          22.216    22.214    22.272
imin           21.890    21.746    21.949
imax           22.604    22.621    22.620
excite_mean     0.423     0.422     0.422
fracstop        1.000     1.000     1.000
cjmean          2.900     2.900     2.900

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       192.6     181.7     195.5
kozaiamp        180.0     180.0     180.0