1998 UM8

1998UM8, 13361, 1950 MF, 1950MF, 1981 UE22, 1981UE22, 1997 JU17, 1997JU17, 1997 LP13, 1997LP13, J50M00F, J81U22E, J97J17U, J97L13P, J98U08M

All data for this body: [vot]

MPC data
Name (number) 1998 UM8 (13361)
a 2.24739
e 0.17465
i / sin(i) 4.6780 / 0.08156
q 1.85488
Q 2.63990
ω 174.5496
Node 95.1579
m 84.1625
n 0.2925
Epoch 2460800.5
nobs 5943
nopp 23
Years observed 1950-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.248
ep 0.167
sin(ip) 0.072
G 0.150
H 14.180
Mass
D 4.05 0.025
pV 0.232 0.0148
Value
Rotational Period 15.230
Period quality 2
Spectral Class S
Spectral Class Score 18.195
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2480 0.1672 0.0724 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.05 0.025 0.025 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.232 0.0148 0.0148 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
14.18 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
15.2309 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.96 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.936 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.4448 0.6500 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9984 0.6500 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT