1998 SM9

1998SM9, 44359, J98S09M

All data for this body: [vot]

MPC data
Name (number) 1998 SM9 (44359)
a 2.72928
e 0.16064
i / sin(i) 8.9677 / 0.15588
q 2.29086
Q 3.16770
ω 210.6374
Node 198.6632
m 297.9630
n 0.2186
Epoch 2460800.5
nobs 1721
nopp 21
Years observed 1996-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.729
ep 0.122
sin(ip) 0.159
G 0.150
H 14.690
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class A
Spectral Class Score 0.991
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.9400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7290 0.1217 0.1590 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
14.69 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 A 0.1652 0.1480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D A 0.1555 0.1480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT