1999 UR4

1999UR4, 44853, J99U04R

All data for this body: [vot]

MPC data
Name (number) 1999 UR4 (44853)
a 2.68823
e 0.09002
i / sin(i) 5.1300 / 0.08942
q 2.44624
Q 2.93021
ω 293.0307
Node 166.9121
m 219.4920
n 0.2236
Epoch 2460800.5
nobs 1755
nopp 21
Years observed 1997-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.688
ep 0.101
sin(ip) 0.087
G 0.150
H 15.040
Mass
D 2.90 0.433
pV 0.277 0.0865
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.297
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6884 0.1010 0.0866 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.90 0.433 0.433 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.277 0.0865 0.0865 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
15.04 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
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.21 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8129 0.8129 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT