Hollycheng

17145, 1987 RW4, 1987RW4, 1987 SA20, 1987SA20, 1987 WA3, 1987WA3, 1996 TT10, 1996TT10, 1999 JG99, 1999JG99, J87R04W, J87S20A, J87W03A, J96T10T, J99J99G

All data for this body: [vot]

MPC data

Name (number)	Hollycheng (17145)
a	2.69425
e	0.17980
i / sin(i)	16.0695 / 0.27680
q	2.20981
Q	3.17869
ω	229.4460
Node	189.1351
m	139.1184
n	0.2229
Epoch	2460800.5

n_obs	3243
n_opp	23
Years observed	1987-2025
rms	0.69

Best values

	Value	Standard error
Parent

a_p	2.694
e_p	0.170
sin(i_p)	0.280
G	0.150
H	13.710
Mass
D	7.56	1.339
pV	0.089	0.0390

	Value
Rotational Period
Period quality	None
Spectral Class	S
Spectral Class Score	15.718

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.6943	0.1698	0.2795	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
6.42	1.750	1.750	Masiero	2012ApJ...759L...8M	NEATM
9.17	2.080	2.080	Masiero	2020PSJ.....1....5M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.081	0.0410	0.0410	Masiero	2020PSJ.....1....5M	NEATM
0.171	0.1280	0.1280	Masiero	2012ApJ...759L...8M	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
13.71			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
A	S	0.3756	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
L	S	0.7530	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
L	S	0.7558	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
S		0.90		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
S	S	0.2982	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.7140	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.9742	0.4580	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT