1991 VY4

1991VY4, 14891, 1997 GC42, 1997GC42, J91V04Y, J97G42C

All data for this body: [vot]

MPC data

Name (number)	1991 VY4 (14891)
a	2.46094
e	0.14891
i / sin(i)	3.7297 / 0.06505
q	2.09448
Q	2.82739
ω	333.9890
Node	98.3497
m	72.8441
n	0.2553
Epoch	2460200.5

n_obs	2835
n_opp	20
Years observed	1991-2023
rms	0.57

Best values

	Value	Standard error
Parent	Nysa (44)

a_p	2.461
e_p	0.148
sin(i_p)	0.048

	Value	Standard error
G	0.150
H	14.360
Mass
D	8.03	0.093
pV	0.054	0.0050

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
44	Nysa	405	Nysa-Polana	0.6100	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.4610	0.1476	0.0477	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
6.56	1.650	1.650	Nugent	2016AJ....152...63N	NEATM
8.03	0.094	0.094	Masiero	2011ApJ...741...68M	NEATM
8.38	2.315	2.315	Masiero	2017AJ....154..168M	NEATM
8.98	2.856	2.856	Masiero	2017AJ....154..168M	NEATM
9.08	3.910	3.910	Masiero	2021PSJ.....2..162M	NEATM
9.18	2.400	2.400	Masiero	2020PSJ.....1....5M	NEATM
9.49	2.860	2.860	Masiero	2012ApJ...759L...8M	NEATM
9.58	1.980	1.980	Masiero	2021PSJ.....2..162M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.033	0.0100	0.0150	Masiero	2021PSJ.....2..162M	NEATM
0.039	0.0264	0.0264	Masiero	2017AJ....154..168M	NEATM
0.044	0.0290	0.0290	Masiero	2020PSJ.....1....5M	NEATM
0.044	0.0420	0.0420	Masiero	2012ApJ...759L...8M	NEATM
0.044	0.0260	0.0620	Masiero	2021PSJ.....2..162M	NEATM
0.045	0.0378	0.0378	Masiero	2017AJ....154..168M	NEATM
0.060	0.0060	0.0060	Masiero	2011ApJ...741...68M	NEATM
0.070	0.0300	0.0300	Nugent	2016AJ....152...63N	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
14.36			MPC-2023-12-04	MPC-2023-12-04	Phot