1981 EZ4

1981EZ4, 69246, J81E04Z

All data for this body: [vot]

MPC data
Name (number) 1981 EZ4 (69246)
a 2.56585
e 0.06033
i / sin(i) 9.4042 / 0.16340
q 2.41105
Q 2.72065
ω 296.6789
Node 312.9691
m 206.0761
n 0.2398
Epoch 2460800.5
nobs 906
nopp 22
Years observed 1981-2025
rms 0.85
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.564
ep 0.078
sin(ip) 0.177
G 0.150
H 15.540
Mass
D 2.51 0.426
pV 0.235 0.0881
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.520
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5641 0.0777 0.1772 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.46 0.574 0.574 Masiero 2011ApJ...741...68M NEATM
2.58 0.634 0.634 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.222 0.1502 0.1502 Masiero 2011ApJ...741...68M NEATM
0.242 0.1087 0.1087 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
15.54 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 0.920 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT