1981 UE23

1981UE23, 1981 WF6, 1981WF6, 1988 AR4, 1988AR4, 1998 VA51, 1998VA51, 2001 EX2, 2001EX2, 26086, J81U23E, J81W06F, J88A04R, J98V51A, K01E02X

All data for this body: [vot]

MPC data

Name (number)	1981 UE23 (26086)
a	3.21678
e	0.02014
i / sin(i)	22.3479 / 0.38023
q	3.15201
Q	3.28156
ω	313.4979
Node	49.9346
m	240.2259
n	0.1708
Epoch	2460800.5

n_obs	3221
n_opp	24
Years observed	1981-2025
rms	0.68

Best values

	Value	Standard error
Parent	Alauda (702)

a_p	3.215
e_p	0.018
sin(i_p)	0.368
G	0.150
H	12.560
Mass
D	19.40	3.740
pV	0.056	0.0300

	Value
Rotational Period	14.491
Period quality	2
Spectral Class	S
Spectral Class Score	4.147

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
702	Alauda	0	Alauda		Novakovic	2019EPSC...13.1671N	HCM
702	Alauda	902	Alauda	0.2900	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
3.2150	0.0185	0.3680	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
19.40	3.740	3.740	Masiero	2012ApJ...759L...8M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.056	0.0300	0.0300	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
12.56			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
14.4916	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
C	S	0.0857	0.5310	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S	S	0.6912	0.5310	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
X	S	0.1577	0.5310	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
CX		0.23		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT