1999 WA18

1999WA18, 1998 HW39, 1998HW39, A2880, J98H39W, J99W18A

All data for this body: [vot]

MPC data
Name (number) 1999 WA18 (102880)
a 2.37466
e 0.21589
i / sin(i) 1.7189 / 0.03000
q 1.86199
Q 2.88732
ω 228.7920
Node 69.1368
m 72.6397
n 0.2693
Epoch 2460800.5
nobs 719
nopp 18
Years observed 1994-2024
rms 0.92
Best values
[raw, vot]

Value Standard error
Parent Euterpe (27)
 
ap 2.375
ep 0.194
sin(ip) 0.017
G 0.150
H 16.520
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.555
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
27 Euterpe 0 Euterpe Novakovic 2019EPSC...13.1671N HCM
27 Euterpe 410 Euterpe 0.3100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3747 0.1940 0.0166 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
16.52 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
A S 0.4458 0.7180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
LS 0.33 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.9259 0.7180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT