1997 YH18

1997YH18, 90994, J97Y18H

All data for this body: [vot]

MPC data
Name (number) 1997 YH18 (90994)
a 2.42880
e 0.18097
i / sin(i) 1.9076 / 0.03329
q 1.98926
Q 2.86834
ω 13.3498
Node 37.8217
m 118.8743
n 0.2604
Epoch 2460800.5
nobs 1418
nopp 17
Years observed 1997-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent Massalia (20)
 
ap 2.429
ep 0.167
sin(ip) 0.026
G 0.150
H 15.750
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 11.631
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
20 Massalia 0 Massalia Novakovic 2019EPSC...13.1671N HCM
20 Massalia 404 Massalia 0.7500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4294 0.1669 0.0264 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
15.75 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 0.25 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.764 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.7578 0.7578 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT