1999 VB2

1999VB2, 2000 WY8, 2000WY8, 41042, J99V02B, K00W08Y

All data for this body: [vot]

MPC data

Name (number)	1999 VB2 (41042)
a	3.16941
e	0.28245
i / sin(i)	25.3749 / 0.42854
q	2.27420
Q	4.06462
ω	78.2875
Node	87.4466
m	317.2593
n	0.1747
Epoch	2460200.5

n_obs	2013
n_opp	23
Years observed	1985-2023
rms	0.61

Best values

	Value	Standard error
Parent	Euphrosyne (31)

a_p	3.166
e_p	0.248
sin(i_p)	0.442

	Value	Standard error
G	0.150
H	12.890
Mass
D	19.54	0.231
pV	0.050	0.0051
Rotational Period	20.384

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
31	Euphrosyne	901	Euphrosyne		Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1659	0.2481	0.4420	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
13.54	3.690	3.690	Masiero	2021PSJ.....2..162M	NEATM
17.79	0.474	0.474	Masiero	2011ApJ...741...68M	NEATM
17.81	5.010	5.010	Masiero	2020PSJ.....1....5M	NEATM
18.99	1.900	1.900	Ali-Lagoa	2018A&A...612A..85A	NEATM
20.13	0.270	0.270	Usui	2011PASJ...63.1117U	NEATM
20.95	2.090	2.090	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.038	0.0080	0.0080	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.043	0.0530	0.0530	Masiero	2020PSJ.....1....5M	NEATM
0.046	0.0090	0.0090	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.064	0.0250	0.0400	Masiero	2021PSJ.....2..162M	NEATM
0.073	0.0101	0.0101	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
12.89			MPC-2023-12-04	MPC-2023-12-04	Phot

Period data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
20.35			Durech	2018A&A...617A..57D	Model
20.35			Durech	2023A&A...675A..24D	Model
20.38			Waszczak	2015AJ....150...75W	Lightcurve