Nephthys

00287, 1889 QA, 1889QA, I89Q00A

All data for this body: [vot]

MPC data

Name (number)	Nephthys (287)
a	2.35397
e	0.02267
i / sin(i)	10.0319 / 0.17420
q	2.30059
Q	2.40734
ω	121.7436
Node	142.3017
m	115.0593
n	0.2729
Epoch	2460200.5

n_obs	4181
n_opp	73
Years observed	1889-2023
rms	0.65

Best values

	Value	Standard error
Parent

a_p	2.353
e_p	0.050
sin(i_p)	0.171

	Value	Standard error
G	0.150
H	8.340
Mass	2.747e+17	8.006e+16
D	64.55	0.542
pV	0.183	0.0055

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.3530	0.0500	0.1706	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Mass data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
2.2736e+17	1.1322e+17	1.1322e+17	Fienga	INPOP19a	Ephem
3.2200e+17			Folkner	2014IPNPR.196C...1F	Ephem

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
59.62	1.280	1.280	Masiero	2014ApJ...791..121M	NEATM
61.88	1.190	1.190	Masiero	2011ApJ...741...68M	NEATM
65.83	0.940	0.940	Usui	2011PASJ...63.1117U	NEATM
67.60	1.400	1.400	Tedesco	2002AJ....123.1056T	STM
68.06	6.810	6.810	Ali-Lagoa	2018A&A...612A..85A	NEATM
68.11	3.154	3.154	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
69.10	1.788	1.788	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
69.24	13.850	13.850	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.176	0.0700	0.0700	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.177	0.0091	0.0091	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
0.182	0.0360	0.0360	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.183	0.0164	0.0164	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
0.185	0.0080	0.0080	Tedesco	2002AJ....123.1056T	STM
0.221	0.0472	0.0472	Masiero	2011ApJ...741...68M	NEATM
0.240	0.0700	0.0700	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
8.34			MPC-2023-12-04	MPC-2023-12-04	Phot