1981 EK20

1981EK20, 19940, 1998 EJ10, 1998EJ10, J81E20K, J98E10J

All data for this body: [vot]

MPC data
Name (number) 1981 EK20 (19940)
a 2.62476
e 0.16534
i / sin(i) 11.2940 / 0.19584
q 2.19079
Q 3.05874
ω 267.7381
Node 358.1566
m 64.1891
n 0.2318
Epoch 2460800.5
nobs 1544
nopp 23
Years observed 1981-2025
rms 0.78
Best values
[raw, vot]

Value Standard error
Parent Adeona (145)
 
ap 2.625
ep 0.162
sin(ip) 0.205
G 0.150
H 14.740
Mass
D 6.42 0.187
pV 0.075 0.0129
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
145 Adeona 0 Adeona Novakovic 2019EPSC...13.1671N HCM
145 Adeona 505 Adeona -0.9100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6246 0.1622 0.2055 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.14 1.627 1.627 Masiero 2017AJ....154..168M NEATM
5.35 1.650 1.650 Masiero 2021PSJ.....2..162M NEATM
6.45 0.189 0.189 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.074 0.0135 0.0135 Masiero 2011ApJ...741...68M NEATM
0.083 0.0430 0.0880 Masiero 2021PSJ.....2..162M NEATM
0.088 0.0602 0.0602 Masiero 2017AJ....154..168M 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
14.74 MPC-2023-12-04 MPC-2023-12-04 Phot