2008 QS21

2008QS21, e3197, K08Q21S

All data for this body: [vot]

MPC data

Name (number)	2008 QS21 (403197)
a	3.12736
e	0.32389
i / sin(i)	13.8841 / 0.23996
q	2.11443
Q	4.14029
ω	210.9627
Node	188.1674
m	222.0621
n	0.1782
Epoch	2460200.5

n_obs	414
n_opp	12
Years observed	2004-2023
rms	0.68

Best values

	Value	Standard error
Parent

a_p	3.128
e_p	0.305
sin(i_p)	0.228

	Value	Standard error
G	0.150
H	15.850
Mass
D	5.46	0.475
pV	0.034	0.0117
Rotational Period

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1276	0.3048	0.2279	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
5.46	0.475	0.475	Masiero	2011ApJ...741...68M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.034	0.0117	0.0117	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
15.85			MPC-2023-12-04	MPC-2023-12-04	Phot