1997 EL28

1997EL28, 1999 RG21, 1999RG21, 39757, J97E28L, J99R21G

All data for this body: [vot]

MPC data
Name (number) 1997 EL28 (39757)
a 2.77294
e 0.19020
i / sin(i) 9.4190 / 0.16365
q 2.24552
Q 3.30036
ω 23.4108
Node 3.7708
m 176.6535
n 0.2134
Epoch 2460800.5
nobs 1538
nopp 19
Years observed 1997-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.774
ep 0.153
sin(ip) 0.162
G 0.150
H 15.010
Mass
D 2.94 0.582
pV 0.245 0.1262
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7739 0.1526 0.1624 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.94 0.582 0.582 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.245 0.1262 0.1262 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
15.01 MPC-2023-12-04 MPC-2023-12-04 Phot