2000 LJ21

2000LJ21, 1999 LW16, 1999LW16, 30433, J99L16W, K00L21J

All data for this body: [vot]

MPC data

Name (number)	2000 LJ21 (30433)
a	3.10047
e	0.03664
i / sin(i)	15.2996 / 0.26387
q	2.98686
Q	3.21409
ω	224.4796
Node	268.8176
m	13.0409
n	0.1805
Epoch	2460800.5

n_obs	3221
n_opp	23
Years observed	1991-2025
rms	0.67

Best values

	Value	Standard error
Parent	Ursula (375)

a_p	3.101
e_p	0.063
sin(i_p)	0.284
G	0.150
H	12.880
Mass
D	13.82	0.194
pV	0.068	0.0075

	Value
Rotational Period
Period quality	None
Spectral Class	L
Spectral Class Score	3.336

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
375	Ursula	631	Ursula		Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1009	0.0626	0.2838	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
13.56	0.199	0.199	Masiero	2011ApJ...741...68M	NEATM
14.92	2.250	2.250	Masiero	2012ApJ...759L...8M	NEATM
18.01	5.130	5.130	Nugent	2016AJ....152...63N	NEATM
18.35	3.670	3.670	Ali-Lagoa	2018A&A...612A..85A	NEATM
19.30	0.990	0.990	Usui	2011PASJ...63.1117U	NEATM
20.44	4.090	4.090	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.036	0.0140	0.0140	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.040	0.0500	0.0500	Nugent	2016AJ....152...63N	NEATM
0.045	0.0180	0.0180	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.072	0.0230	0.0230	Masiero	2012ApJ...759L...8M	NEATM
0.100	0.0117	0.0117	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
12.88			MPC-2023-12-04	MPC-2023-12-04	Phot

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
L		0.556		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT