2007 HJ57

2007HJ57, K07H57J, S4475

All data for this body: [vot]

MPC data

Name (number)	2007 HJ57 (284475)
a	2.77931
e	0.05376
i / sin(i)	5.2996 / 0.09236
q	2.62990
Q	2.92872
ω	36.9962
Node	159.3849
m	224.2117
n	0.2127
Epoch	2460200.5

n_obs	239
n_opp	13
Years observed	2006-2022
rms	0.75

Best values

	Value	Standard error
Parent	Nemesis (128)

a_p	2.777
e_p	0.095
sin(i_p)	0.086

	Value	Standard error
G	0.150
H	16.940
Mass
D	2.96	0.321
pV	0.038	0.0035
Rotational Period

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
128	Nemesis	504	Nemesis	0.4600	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.7769	0.0949	0.0865	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
2.96	0.321	0.321	Masiero	2011ApJ...741...68M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.038	0.0035	0.0035	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
16.94			MPC-2023-12-04	MPC-2023-12-04	Phot