1981 EL23

1981EL23, 1999 TR215, 1999TR215, 99984, J81E23L, J99TL5R

All data for this body: [vot]

MPC data
Name (number) 1981 EL23 (99984)
a 2.51691
e 0.12310
i / sin(i) 3.4376 / 0.05996
q 2.20709
Q 2.82674
ω 278.3625
Node 159.4141
m 101.6693
n 0.2468
Epoch 2460800.5
nobs 1514
nopp 18
Years observed 1981-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.513
ep 0.130
sin(ip) 0.056
G 0.150
H 15.620
Mass
D 5.09 0.252
pV 0.048 0.0096
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5129 0.1300 0.0562 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.95 1.400 1.400 Masiero 2021PSJ.....2..162M NEATM
5.12 0.256 0.256 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.047 0.0098 0.0098 Masiero 2011ApJ...741...68M NEATM
0.070 0.0320 0.0590 Masiero 2021PSJ.....2..162M 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
15.62 MPC-2023-12-04 MPC-2023-12-04 Phot