1998 UM18

1998UM18, 13782, 1989 EP3, 1989EP3, J89E03P, J98U18M

All data for this body: [vot]

MPC data
Name (number) 1998 UM18 (13782)
a 5.19317
e 0.13378
i / sin(i) 28.5739 / 0.47829
q 4.49841
Q 5.88793
ω 233.4791
Node 150.1575
m 127.4474
n 0.0833
Epoch 2460800.5
nobs 2070
nopp 26
Years observed 1989-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 11.560
Mass
D 25.55 0.253
pV 0.083 0.0094
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 7.475
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
24.97 0.290 0.290 Grav 2012ApJ...759...49G NEATM
27.41 0.520 0.520 Grav 2011ApJ...742...40G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.078 0.0150 0.0150 Grav 2011ApJ...742...40G NEATM
0.086 0.0120 0.0120 Grav 2012ApJ...759...49G 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
11.56 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
D DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
D 0.48 Bus VIS Carvano 2010A&A...510A..43C PHOT
D D 0.7525 0.7525 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT