1991 UE2

1991UE2, 16554, 1987 UN9, 1987UN9, 1997 ED, 1997ED, J87U09N, J91U02E, J97E00D

All data for this body: [vot]

MPC data
Name (number) 1991 UE2 (16554)
a 2.55877
e 0.08935
i / sin(i) 3.6620 / 0.06387
q 2.33016
Q 2.78739
ω 51.7719
Node 47.1322
m 15.5582
n 0.2408
Epoch 2460800.5
nobs 3312
nopp 25
Years observed 1950-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.558
ep 0.116
sin(ip) 0.056
G 0.150
H 13.750
Mass
D 7.62 0.200
pV 0.109 0.0141
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 7.572
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5580 0.1161 0.0558 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.58 0.205 0.205 Masiero 2011ApJ...741...68M NEATM
7.75 1.770 1.770 Masiero 2020PSJ.....1....5M NEATM
8.05 2.087 2.087 Masiero 2017AJ....154..168M NEATM
8.78 2.320 2.320 Nugent 2016AJ....152...63N NEATM
8.85 1.430 1.430 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.060 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM
0.082 0.0310 0.0310 Masiero 2012ApJ...759L...8M NEATM
0.099 0.0617 0.0617 Masiero 2017AJ....154..168M NEATM
0.102 0.0990 0.0990 Masiero 2020PSJ.....1....5M NEATM
0.122 0.0173 0.0173 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
13.75 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 D 0.9287 0.7210 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X D 0.6846 0.7210 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT