1999 UM1

1999UM1, 42997, J99U01M

All data for this body: [vot]

MPC data
Name (number) 1999 UM1 (42997)
a 2.35616
e 0.15558
i / sin(i) 5.6027 / 0.09763
q 1.98960
Q 2.72273
ω 179.2586
Node 70.2433
m 124.6510
n 0.2725
Epoch 2460800.5
nobs 1777
nopp 23
Years observed 1991-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.357
ep 0.166
sin(ip) 0.082
G 0.150
H 15.440
Mass
D 2.77 0.961
pV 0.191 0.0715
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 4.978
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3571 0.1660 0.0817 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.77 0.961 0.961 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.191 0.0715 0.0715 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
15.44 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
C 0.13 Bus VIS Carvano 2010A&A...510A..43C PHOT
K DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.8297 0.8297 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT