1998 WC8

1998WC8, 1989 VY1, 1989VY1, 25286, J89V01Y, J98W08C

All data for this body: [vot]

MPC data

Name (number)	1998 WC8 (25286)
a	2.73173
e	0.26176
i / sin(i)	8.8387 / 0.15366
q	2.01668
Q	3.44678
ω	291.6212
Node	107.6989
m	317.8704
n	0.2183
Epoch	2460800.5

n_obs	2414
n_opp	23
Years observed	1989-2025
rms	0.76

Best values

	Value	Standard error
Parent

a_p	2.731
e_p	0.226
sin(i_p)	0.141
G	0.150
H	14.040
Mass
D	8.26	0.271
pV	0.102	0.0127

	Value
Rotational Period
Period quality	None
Spectral Class	X
Spectral Class Score	6.008

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.7307	0.2264	0.1407	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
6.89	1.800	1.800	Masiero	2020PSJ.....1....5M	NEATM
7.66	2.456	2.456	Masiero	2017AJ....154..168M	NEATM
7.88	0.430	0.430	Masiero	2011ApJ...741...68M	NEATM
8.22	0.456	0.456	Masiero	2011ApJ...741...68M	NEATM
9.16	0.610	0.610	Usui	2011PASJ...63.1117U	NEATM
9.49	1.900	1.900	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.062	0.0250	0.0250	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.068	0.0403	0.0403	Masiero	2017AJ....154..168M	NEATM
0.073	0.0430	0.0430	Masiero	2020PSJ.....1....5M	NEATM
0.125	0.0274	0.0274	Masiero	2011ApJ...741...68M	NEATM
0.136	0.0220	0.0220	Masiero	2011ApJ...741...68M	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
14.04			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	0.6158	0.1750	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	X	0.0756	0.1750	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
X	X	0.4265	0.1750	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
X	X	0.5748	0.1750	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT