Standish

03420, 1951 CC, 1951CC, 1973 DU, 1973DU, 1979 HS5, 1979HS5, 1984 EB, 1984EB, J51C00C, J73D00U, J79H05S, J84E00B

All data for this body: [vot]

MPC data

Name (number)	Standish (3420)
a	3.10316
e	0.08138
i / sin(i)	14.3082 / 0.24714
q	2.85062
Q	3.35569
ω	19.9914
Node	145.8829
m	176.7433
n	0.1803
Epoch	2460800.5

n_obs	6883
n_opp	30
Years observed	1951-2025
rms	0.57

Best values

	Value	Standard error
Parent

a_p	3.106
e_p	0.119
sin(i_p)	0.236
G	0.150
H	12.190
Mass
D	18.08	0.406
pV	0.095	0.0200

	Value
Rotational Period	10.386
Period quality	2
Spectral Class	B
Spectral Class Score	7.340

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1057	0.1194	0.2360	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
13.58	5.510	5.510	Masiero	2012ApJ...759L...8M	NEATM
14.49	1.130	1.130	Usui	2011PASJ...63.1117U	NEATM
14.88	2.980	2.980	Ali-Lagoa	2018A&A...612A..85A	NEATM
18.72	0.441	0.441	Masiero	2011ApJ...741...68M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.088	0.0215	0.0215	Masiero	2011ApJ...741...68M	NEATM
0.141	0.0560	0.0560	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.182	0.2360	0.2360	Masiero	2012ApJ...759L...8M	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
12.19			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
10.3869	2	Sidereal	Durech	2018A&A...620A..91D	Model
10.38693	2	Sidereal	Durech	2019A&A...631A...2D	Model
10.387	2	Sidereal	Durech	2023A&A...675A..24D	Model

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
B				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
B		0.890		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
C	C	0.4633	0.4633	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT