Muirhead

07818, 1970 ET1, 1970ET1, 1988 DN5, 1988DN5, 1990 QO, 1990QO, J70E01T, J88D05N, J90Q00O

All data for this body: [vot]

MPC data

Name (number)	Muirhead (7818)
a	2.34009
e	0.34991
i / sin(i)	21.7403 / 0.37040
q	1.52126
Q	3.15892
ω	254.6205
Node	160.4420
m	202.8797
n	0.2753
Epoch	2460800.5

n_obs	2669
n_opp	24
Years observed	1970-2025
rms	0.74

Best values

	Value	Standard error
Parent

a_p	2.340
e_p	0.287
sin(i_p)	0.394
G	0.150
H	13.970
Mass
D	4.52	0.357
pV	0.198	0.0327

	Value
Rotational Period
Period quality	None
Spectral Class	S
Spectral Class Score	20.897

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.3400	0.2867	0.3944	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
3.90	0.610	0.610	Nugent	2016AJ....152...63N	NEATM
4.30	0.700	0.700	Ali-Lagoa	2017A&A...603A..55A	NEATM
5.10	0.800	0.800	Ali-Lagoa	2017A&A...603A..55A	NEATM
5.30	0.800	0.800	Ali-Lagoa	2017A&A...603A..55A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.170	0.0500	0.0500	Ali-Lagoa	2017A&A...603A..55A	NEATM
0.190	0.0600	0.0600	Ali-Lagoa	2017A&A...603A..55A	NEATM
0.240	0.1000	0.1000	Nugent	2016AJ....152...63N	NEATM
0.260	0.0800	0.0800	Ali-Lagoa	2017A&A...603A..55A	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
13.97			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
S				Bus	VIS	Binzel	2019Icar..324...41B	PHOT
S				DeMeo-Carry	VIS	Carry		PHOT
S				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
S		0.60		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
S		0.989		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
S	S	0.5922	0.6310	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.7017	0.6310	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT