1981 EE31

1981EE31, 1999 JK6, 1999JK6, 37550, J81E31E, J99J06K

All data for this body: [vot]

MPC data
Name (number) 1981 EE31 (37550)
a 2.32513
e 0.27000
i / sin(i) 21.3997 / 0.36487
q 1.69735
Q 2.95292
ω 106.4334
Node 177.9424
m 87.2401
n 0.2780
Epoch 2460800.5
nobs 1734
nopp 18
Years observed 1981-2024
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Phocaea (25)
 
ap 2.325
ep 0.244
sin(ip) 0.393
G 0.150
H 15.350
Mass
D 2.19 0.052
pV 0.296 0.0553
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.875
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
25 Phocaea 0 Phocaea Novakovic 2019EPSC...13.1671N HCM
25 Phocaea 701 Phocaea -0.3700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3253 0.2439 0.3934 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.19 0.052 0.052 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.296 0.0553 0.0553 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
15.35 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
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.9792 0.9780 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
SQ 0.63 Bus VIS Carvano 2010A&A...510A..43C PHOT