1981 ER26

1981ER26, 1999 FA21, 1999FA21, 30749, J81E26R, J99F21A

All data for this body: [vot]

MPC data
Name (number) 1981 ER26 (30749)
a 2.35669
e 0.05238
i / sin(i) 7.3369 / 0.12770
q 2.23325
Q 2.48012
ω 210.8051
Node 5.0342
m 38.3684
n 0.2724
Epoch 2460800.5
nobs 2639
nopp 21
Years observed 1981-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Vesta (4)
 
ap 2.356
ep 0.087
sin(ip) 0.125
G 0.150
H 15.280
Mass
D 2.18 0.389
pV 0.445 0.2137
Value
Rotational Period 91.997
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
4 Vesta 0 Vesta Novakovic 2019EPSC...13.1671N HCM
4 Vesta 401 Vesta Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3564 0.0868 0.1248 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.18 0.389 0.389 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.445 0.2137 0.2137 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
15.28 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
91.9974 2 Synodic Pal 2020ApJS..247...26P Lightcurve