Bobross

06641, 1981 RY4, 1981RY4, 1981 SM6, 1981SM6, 1990 OK2, 1990OK2, J81R04Y, J81S06M, J90O02K

All data for this body: [vot]

MPC data
Name (number) Bobross (6641)
a 2.77760
e 0.18955
i / sin(i) 4.8770 / 0.08502
q 2.25109
Q 3.30410
ω 294.3910
Node 81.5418
m 136.3637
n 0.2129
Epoch 2460800.5
nobs 4842
nopp 29
Years observed 1956-2025
rms 0.62
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.780
ep 0.149
sin(ip) 0.067
G 0.150
H 13.410
Mass
D 6.11 0.095
pV 0.273 0.0468
Value
Rotational Period 5.903
Period quality 2
Spectral Class S
Spectral Class Score 6.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7800 0.1493 0.0666 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.11 0.095 0.095 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.273 0.0468 0.0468 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.41 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.9 2 Synodic McNeill 2019ApJS..245...29M Lightcurve
5.90268 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT