Alandreev

04420, 1936 PB, 1936PB, 1949 OB, 1949OB, 1958 TL, 1958TL, 1967 TD, 1967TD, 1971 OD1, 1971OD1, 1971 QB, 1971QB, 1987 DY1, 1987DY1, J36P00B, J49O00B, J58T00L, J67T00D, J71O01D, J71Q00B, J87D01Y

All data for this body: [vot]

MPC data

Name (number)	Alandreev (4420)
a	2.67430
e	0.31702
i / sin(i)	6.9039 / 0.12021
q	1.82649
Q	3.52211
ω	1.4461
Node	302.4140
m	338.1821
n	0.2254
Epoch	2460200.5

n_obs	3465
n_opp	31
Years observed	1936-2023
rms	0.55

Best values

	Value	Standard error
Parent

a_p	2.673
e_p	0.305
sin(i_p)	0.126

	Value	Standard error
G	0.150
H	12.690
Mass
D	16.65	0.105
pV	0.058	0.0034

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.6734	0.3051	0.1258	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
14.36	2.750	2.750	Masiero	2021PSJ.....2..162M	NEATM
14.46	3.460	3.460	Masiero	2021PSJ.....2..162M	NEATM
15.20	1.520	1.520	Ali-Lagoa	2018A&A...612A..85A	NEATM
15.42	4.003	4.003	Masiero	2017AJ....154..168M	NEATM
16.03	0.169	0.169	Masiero	2011ApJ...741...68M	NEATM
16.25	0.220	0.220	Usui	2011PASJ...63.1117U	NEATM
17.52	0.170	0.170	Masiero	2012ApJ...759L...8M	NEATM
19.84	1.980	1.980	Ali-Lagoa	2018A&A...612A..85A	NEATM
22.10	3.530	3.530	Nugent	2016AJ....152...63N	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.030	0.0200	0.0200	Nugent	2016AJ....152...63N	NEATM
0.032	0.0090	0.0090	Masiero	2012ApJ...759L...8M	NEATM
0.048	0.0100	0.0100	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.059	0.0180	0.0250	Masiero	2021PSJ.....2..162M	NEATM
0.064	0.0043	0.0043	Masiero	2011ApJ...741...68M	NEATM
0.067	0.0368	0.0368	Masiero	2017AJ....154..168M	NEATM
0.082	0.0160	0.0160	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.086	0.0300	0.0460	Masiero	2021PSJ.....2..162M	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
12.69			MPC-2023-12-04	MPC-2023-12-04	Phot