1998 UB8

1998UB8, 1996 FA6, 1996FA6, 25239, J96F06A, J98U08B

All data for this body: [vot]

MPC data

Name (number)	1998 UB8 (25239)
a	2.65027
e	0.16693
i / sin(i)	2.2085 / 0.03854
q	2.20786
Q	3.09268
ω	280.6884
Node	50.7951
m	110.2572
n	0.2284
Epoch	2460800.5

n_obs	1672
n_opp	22
Years observed	1996-2025
rms	0.77

Best values

	Value	Standard error
Parent

a_p	2.648
e_p	0.136
sin(i_p)	0.029
G	0.150
H	15.000
Mass
D	6.81	0.118
pV	0.046	0.0046

	Value
Rotational Period
Period quality	None
Spectral Class	X
Spectral Class Score	7.377

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.6478	0.1357	0.0286	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
4.78	1.450	1.450	Masiero	2021PSJ.....2..162M	NEATM
5.04	1.240	1.240	Nugent	2016AJ....152...63N	NEATM
5.68	1.570	1.570	Masiero	2021PSJ.....2..162M	NEATM
6.85	0.119	0.119	Masiero	2011ApJ...741...68M	NEATM
7.11	2.779	2.779	Masiero	2017AJ....154..168M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.038	0.0285	0.0285	Masiero	2017AJ....154..168M	NEATM
0.045	0.0048	0.0048	Masiero	2011ApJ...741...68M	NEATM
0.060	0.0230	0.0380	Masiero	2021PSJ.....2..162M	NEATM
0.070	0.0400	0.0400	Nugent	2016AJ....152...63N	NEATM
0.085	0.0410	0.0770	Masiero	2021PSJ.....2..162M	NEATM

G data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
15.00			MPC-2023-12-04	MPC-2023-12-04	Phot

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
C	X	0.3736	0.3640	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
X				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
X		0.214		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
X		0.59		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
X	X	0.4855	0.3640	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT