Lyon

09381, 1975 EK6, 1975EK6, 1980 DO2, 1980DO2, 1985 BH1, 1985BH1, 1991 GP5, 1991GP5, 1993 RT19, 1993RT19, 1998 QW39, 1998QW39, J75E06K, J80D02O, J85B01H, J91G05P, J93R19T, J98Q39W

All data for this body: [vot]

MPC data
Name (number) Lyon (9381)
a 2.99784
e 0.06217
i / sin(i) 1.1339 / 0.01979
q 2.81148
Q 3.18421
ω 99.4814
Node 355.9039
m 299.0806
n 0.1899
Epoch 2460800.5
nobs 3536
nopp 27
Years observed 1975-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.000
ep 0.066
sin(ip) 0.031
G 0.150
H 12.930
Mass
D 7.16 0.085
pV 0.199 0.0198
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.360
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0003 0.0659 0.0314 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.16 0.085 0.085 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.199 0.0198 0.0198 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
12.93 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
LS 0.50 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.8934 0.8934 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT