1981 EF9

1981EF9, 18306, 2000 SX168, 2000SX168, J81E09F, K00SG8X

All data for this body: [vot]

MPC data
Name (number) 1981 EF9 (18306)
a 2.30709
e 0.10622
i / sin(i) 3.9821 / 0.06944
q 2.06204
Q 2.55213
ω 262.0674
Node 283.6810
m 204.3738
n 0.2813
Epoch 2460800.5
nobs 2270
nopp 22
Years observed 1979-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.308
ep 0.146
sin(ip) 0.083
G 0.150
H 15.000
Mass
D 2.62 0.271
pV 0.409 0.0551
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
8 Flora 402 Flora 0.6700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
298 Baptistina 403 Baptistina 2.2100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3079 0.1458 0.0830 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.62 0.271 0.271 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.409 0.0551 0.0551 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
15.00 MPC-2023-12-04 MPC-2023-12-04 Phot