1989 ST9

1989ST9, 18342, 1999 FM14, 1999FM14, J89S09T, J99F14M

All data for this body: [vot]

MPC data
Name (number) 1989 ST9 (18342)
a 2.35072
e 0.23511
i / sin(i) 2.2712 / 0.03963
q 1.79803
Q 2.90341
ω 315.6067
Node 19.2943
m 331.1706
n 0.2735
Epoch 2460800.5
nobs 1063
nopp 22
Years observed 1989-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.351
ep 0.197
sin(ip) 0.037
G 0.150
H 16.030
Mass
D 1.80 0.286
pV 0.261 0.0885
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 4.002
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
135 Hertha 0 Hertha Novakovic 2019EPSC...13.1671N HCM
44 Nysa 405 Nysa-Polana -0.5200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3508 0.1973 0.0367 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.80 0.286 0.286 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.261 0.0885 0.0885 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
16.03 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
X 0.667 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT