1981 EZ21

1981EZ21, 1997 TJ16, 1997TJ16, 48400, J81E21Z, J97T16J

All data for this body: [vot]

MPC data
Name (number) 1981 EZ21 (48400)
a 2.83873
e 0.04283
i / sin(i) 1.5431 / 0.02693
q 2.71715
Q 2.96030
ω 54.8312
Node 203.8979
m 5.2019
n 0.2061
Epoch 2460800.5
nobs 1840
nopp 21
Years observed 1981-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.838
ep 0.065
sin(ip) 0.038
G 0.150
H 14.670
Mass
D 3.32 0.453
pV 0.278 0.0957
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
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis -0.2500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8381 0.0653 0.0382 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.32 0.850 0.850 Masiero 2011ApJ...741...68M NEATM
3.33 0.535 0.535 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.277 0.1312 0.1312 Masiero 2011ApJ...741...68M NEATM
0.279 0.1400 0.1400 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
14.67 MPC-2023-12-04 MPC-2023-12-04 Phot