1991 UT2

1991UT2, 05486, 1974 WP1, 1974WP1, 1977 KQ1, 1977KQ1, J74W01P, J77K01Q, J91U02T

All data for this body: [vot]

MPC data
Name (number) 1991 UT2 (5486)
a 2.60311
e 0.06194
i / sin(i) 10.1933 / 0.17697
q 2.44187
Q 2.76436
ω 221.8049
Node 63.6998
m 110.8802
n 0.2347
Epoch 2460800.5
nobs 11432
nopp 29
Years observed 1955-2025
rms 0.39
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.604
ep 0.059
sin(ip) 0.161
G 0.150
H 12.990
Mass
D 7.17 0.140
pV 0.455 0.0453
Value
Rotational Period 17.000
Period quality 2+
Spectral Class S
Spectral Class Score 9.796
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6036 0.0586 0.1609 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.17 0.140 0.140 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.455 0.0453 0.0453 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
12.99 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
17.8832 2 Sidereal Durech 2020A&A...643A..59D Model
17.9 2+ Synodic Folberth 2012MPBu...39...51F Lightcurve
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 0.35 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.606 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.5766 0.5766 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT