1981 EE21

1981EE21, 2000 LY32, 2000LY32, 27685, J81E21E, K00L32Y

All data for this body: [vot]

MPC data
Name (number) 1981 EE21 (27685)
a 2.72396
e 0.19486
i / sin(i) 12.1026 / 0.20966
q 2.19317
Q 3.25474
ω 213.3756
Node 181.1508
m 60.5447
n 0.2192
Epoch 2460800.5
nobs 2375
nopp 22
Years observed 1981-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.724
ep 0.172
sin(ip) 0.205
G 0.150
H 14.440
Mass
D 4.05 0.065
pV 0.242 0.0462
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 20.180
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7243 0.1724 0.2049 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.05 0.065 0.065 Masiero 2011ApJ...741...68M NEATM
4.30 0.730 0.730 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.219 0.1140 0.1140 Masiero 2012ApJ...759L...8M NEATM
0.247 0.0506 0.0506 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
14.44 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L S 0.1274 0.8730 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.81 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.975 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.8281 0.8730 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9569 0.8730 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT