1998 XS9

1998XS9, 14187, 1991 VQ3, 1991VQ3, J91V03Q, J98X09S

All data for this body: [vot]

MPC data
Name (number) 1998 XS9 (14187)
a 2.26455
e 0.15632
i / sin(i) 2.5051 / 0.04371
q 1.91056
Q 2.61853
ω 123.0992
Node 190.4214
m 8.7411
n 0.2892
Epoch 2460800.5
nobs 3038
nopp 22
Years observed 1991-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.265
ep 0.114
sin(ip) 0.049
G 0.150
H 14.440
Mass
D 4.11 0.117
pV 0.316 0.0730
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.984
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2647 0.1140 0.0494 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.11 0.117 0.117 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.316 0.0730 0.0730 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
14.44 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
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.87 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8740 0.8740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT