1991 RG9

1991RG9, 06045, 1971 OF1, 1971OF1, 1980 FO9, 1980FO9, 1990 DS9, 1990DS9, 1993 BY6, 1993BY6, J71O01F, J80F09O, J90D09S, J91R09G, J93B06Y

All data for this body: [vot]

MPC data

Name (number)	1991 RG9 (6045)
a	2.21720
e	0.13790
i / sin(i)	3.0946 / 0.05398
q	1.91145
Q	2.52296
ω	86.5068
Node	202.5341
m	129.7651
n	0.2985
Epoch	2460800.5

n_obs	5837
n_opp	26
Years observed	1971-2025
rms	0.58

Best values

	Value	Standard error
Parent

a_p	2.217
e_p	0.103
sin(i_p)	0.059
G	0.150
H	13.980
Mass
D	4.59	0.018
pV	0.356	0.0320

	Value
Rotational Period	12.340
Period quality	2
Spectral Class	S
Spectral Class Score	9.762

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.2166	0.1027	0.0595	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
4.56	0.040	0.040	Masiero	2014ApJ...791..121M	NEATM
4.59	0.020	0.020	Masiero	2011ApJ...741...68M	NEATM
5.19	0.145	0.145	Masiero	2011ApJ...741...68M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.302	0.0458	0.0458	Masiero	2011ApJ...741...68M	NEATM
0.402	0.0667	0.0667	Masiero	2011ApJ...741...68M	NEATM
0.410	0.0600	0.0600	Masiero	2014ApJ...791..121M	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
13.98			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
12.345	2	Synodic	Owings	2018MPBu...45..227O	Lightcurve
9.8056	2	Sidereal	Durech	2023A&A...675A..24D	Model

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		0.97		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
S	S	0.9703	0.9703	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
Xt	Xt	None	None	Movis	NIR	Popescu	2018A&A...617A..12P	PHOT