1998 UB44

1998UB44, 74328, J98U44B

All data for this body: [vot]

MPC data
Name (number) 1998 UB44 (74328)
a 2.65513
e 0.19380
i / sin(i) 16.6124 / 0.28590
q 2.14057
Q 3.16968
ω 312.2108
Node 48.6385
m 60.7707
n 0.2278
Epoch 2460800.5
nobs 2243
nopp 21
Years observed 1976-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.654
ep 0.152
sin(ip) 0.271
G 0.150
H 14.280
Mass
D 7.37 0.493
pV 0.065 0.0053
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 4.388
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6535 0.1521 0.2713 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.91 1.890 1.890 Masiero 2021PSJ.....2..162M NEATM
6.29 1.940 1.940 Nugent 2016AJ....152...63N NEATM
7.57 0.529 0.529 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.064 0.0053 0.0053 Masiero 2011ApJ...741...68M NEATM
0.080 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.116 0.0500 0.0890 Masiero 2021PSJ.....2..162M 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
14.28 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 DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.25 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.3146 0.3146 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT