Orbit Fit and Astrometric record for 16RM82

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: 16RM82    
# Created Thu Dec  9 02:13:51 2021
# Orbit generated from Bernstein formalism
# Fitting     16 observations of     16
# Arc:   2.98y
# First observation: 2015/12/05
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000088   0.023415   0.000016  -0.008385   0.025085   0.000000
# Chi-squared of fit:     3.30 DOF:     26 RMS:  0.08
# Min/Max residuals:    -0.30    0.13
# Exact a, adot, b, bdot, g, gdot:
  1.522184E-05  2.332194E-02 -5.932674E-06 -8.354504E-03  2.433799E-02  1.249844E-03
# Covariance matrix:
  6.4544E-13 -7.1337E-13 -1.3525E-13  2.1306E-13 -2.8356E-13 -6.9845E-12
 -7.1337E-13  2.0756E-12  2.5002E-13 -7.4322E-13 -3.1615E-14  2.4691E-11
 -1.3525E-13  2.5002E-13  3.0276E-13 -2.1143E-13  7.8925E-14  2.9980E-12
  2.1306E-13 -7.4322E-13 -2.1143E-13  3.6658E-13  2.3725E-14 -9.2497E-12
 -2.8356E-13 -3.1615E-14  7.8925E-14  2.3725E-14  4.0099E-13 -9.1642E-13
 -6.9845E-12  2.4691E-11  2.9980E-12 -9.2497E-12 -9.1642E-13  3.0746E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -23.598502   -2.088166   -0.951237   -0.106474   -0.244296  2457361.651769
# Heliocentric elements and errors
Epoch:              2457360.5000  =  2015/12/04
Mean Anomaly:           36.44337 +/-     0.181
Argument of Peri:      188.05857 +/-     0.251
Long of Asc Node:      130.58006 +/-     0.001
Inclination:            29.97192 +/-     0.000
Eccentricity:         0.10886670 +/-    0.0006
Semi-Major Axis:     45.07120476 +/-    0.0119
Time of Perihelion: 2446172.2240 +/-      55.3
Perihelion:          40.16445152 +/-    0.0299
Aphelion:            49.97795801 +/-    0.0309
Period (y)              302.5917 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.92415505 +/-    0.0010
Ecliptic Y           -0.43163079 +/-    0.0000
Ecliptic Z          -16.44885897 +/-    0.0004
Ecliptic XDOT        -0.00015278 +/-    0.0000
Ecliptic YDOT         0.00262402 +/-    0.0000
Ecliptic ZDOT        -0.00091748 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.33996617 +/-    0.0009
Geocenter to KBO     41.08802935 +/-    0.0011
# Hcoef:  6.91

The following table shows the complete astrometric record for 16RM82. 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 (16RM82) followed by the observatory code and reference code for the source of the astrometry.

2015 12  05.15098  00 31 58.571  -22 22 09.03  22.9i 16RM82    W84  C~55Zp      
2015 12  05.15236  00 31 58.575  -22 22 08.97  23.2r 16RM82    W84  C~55Zp      
2016 09  05.33188  00 44 01.484  -21 51 42.62  23.0r 16RM82    W84  C~55Zp      
2016 09  05.33326  00 44 01.487  -21 51 43.08  24.1g 16RM82    W84  C~55Zp      
2016 09  05.33464  00 44 01.479  -21 51 42.85  22.6i 16RM82    W84  C~55Zp      
2016 09  07.20279  00 43 53.824  -21 53 03.45  21.6z 16RM82    W84  C~55Zp      
2016 10  05.16972  00 41 45.682  -22 09 52.81  22.7i 16RM82    W84  C~55Zp      
2016 10  05.17110  00 41 45.680  -22 09 52.75  23.4r 16RM82    W84  C~55Zp      
2016 10  29.25182  00 39 55.027  -22 17 20.94  23.2r 16RM82    W84  C~55Zp      
2016 11  04.11227  00 39 31.090  -22 17 58.07  24.0g 16RM82    W84  C~55Zp      
2017 09  26.22911  00 48 37.039  -21 54 41.75  23.3r 16RM82    W84  C~55Zp      
2017 09  26.23049  00 48 37.040  -21 54 41.81  22.6i 16RM82    W84  C~55Zp      
2018 10  01.30608  00 54 19.688  -21 46 05.16  22.7z 16RM82    W84  C~55Zp      
2018 11  15.20091  00 51 01.725  -21 57 12.08  22.5i 16RM82    W84  C~55Zp      
2018 11  29.08376  00 50 20.173  -21 54 51.51  23.2r 16RM82    W84  C~55Zp      
2018 11  29.08517  00 50 20.171  -21 54 51.48  24.0g 16RM82    W84  C~55Zp      

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     0.10
     2   0.0000      0.08     0.08       0.03     0.09
     3   0.7534   9836.31    -0.01   -2769.29     0.11
     4   0.7534   9836.14    -0.08   -2769.72    -0.30
     5   0.7534   9836.14     0.02   -2769.47    -0.03
     6   0.7585   9704.48     0.03   -2793.84    -0.12
     7   0.8351   7655.69    -0.06   -2902.19    -0.02
     8   0.8351   7655.69     0.05   -2902.13     0.04
     9   0.9010   6077.74     0.06   -2622.62     0.13
    10   0.9171   5762.94    -0.09   -2509.17    -0.09
    11   1.8099  13190.64    -0.05   -4664.34     0.06
    12   1.8099  13190.62     0.04   -4664.40    -0.00
    13   2.8231  17695.84    -0.01   -6403.60    -0.00
    14   2.9461  14923.04     0.02   -5721.13    -0.02
    15   2.9841  14470.41    -0.00   -5329.95     0.03
    16   2.9841  14470.40     0.02   -5329.91     0.02

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.

16RM82    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.535    45.575    45.496
ecceobj         0.116     0.118     0.114
incobj         29.928    29.929    29.927
qmin           39.246    39.207    39.339
qmax           51.652    51.769    51.517
amean          45.305    45.352    45.276
amin           44.946    45.000    44.911
amax           45.704    45.738    45.674
emean           0.117     0.119     0.115
emin            0.104     0.106     0.103
emax            0.130     0.132     0.128
imean          28.444    28.444    28.448
imin           28.158    28.159    28.163
imax           28.739    28.738    28.742
excite_mean     0.491     0.491     0.490
fracstop        1.000     1.000     1.000
cjmean          2.807     2.807     2.807

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       185.8     185.4     185.9
kozaiamp        179.9     180.0     179.9