Boyan

03681, 1937 KA, 1937KA, 1947 LG, 1947LG, 1974 QO2, 1974QO2, 1980 GM1, 1980GM1, 1984 SN2, 1984SN2, J37K00A, J47L00G, J74Q02O, J80G01M, J84S02N

All data for this body: [vot]

MPC data

Name (number)	Boyan (3681)
a	2.23052
e	0.18361
i / sin(i)	4.0653 / 0.07089
q	1.82098
Q	2.64007
ω	172.6254
Node	132.9583
m	106.0168
n	0.2959
Epoch	2460800.5

n_obs	7123
n_opp	29
Years observed	1947-2025
rms	0.52

Best values

	Value	Standard error
Parent

a_p	2.230
e_p	0.138
sin(i_p)	0.061
G	0.150
H	13.690
Mass
D	4.54	0.043
pV	0.305	0.0189

	Value
Rotational Period
Period quality	None
Spectral Class	S
Spectral Class Score	26.060

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.2298	0.1382	0.0612	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
4.25	0.135	0.135	Masiero	2011ApJ...741...68M	NEATM
4.58	0.045	0.045	Masiero	2011ApJ...741...68M	NEATM
6.25	1.900	1.900	Nugent	2016AJ....152...63N	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.160	0.0800	0.0800	Nugent	2016AJ....152...63N	NEATM
0.280	0.0407	0.0407	Masiero	2011ApJ...741...68M	NEATM
0.324	0.0221	0.0221	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
13.69			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				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
S		0.99		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
S		1.000		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
S	S	None	None	Movis	NIR	Popescu	2018A&A...617A..12P	PHOT
S	S	0.5472	0.9250	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.9713	0.9250	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.9949	0.9250	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT