1988 RX4

1988RX4, 07281, 1992 UV2, 1992UV2, J88R04X, J92U02V

All data for this body: [vot]

MPC data

Name (number)	1988 RX4 (7281)
a	2.41573
e	0.21113
i / sin(i)	3.5741 / 0.06234
q	1.90569
Q	2.92576
ω	244.2311
Node	103.7337
m	267.3687
n	0.2625
Epoch	2460800.5

n_obs	4029
n_opp	27
Years observed	1950-2025
rms	0.70

Best values

	Value	Standard error
Parent	Nysa (44)

a_p	2.416
e_p	0.173
sin(i_p)	0.046
G	0.150
H	14.100
Mass
D	3.99	0.175
pV	0.279	0.0538

	Value
Rotational Period	16.000
Period quality	2
Spectral Class	L
Spectral Class Score	3.625

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
135	Hertha	0	Hertha		Novakovic	2019EPSC...13.1671N	HCM
44	Nysa	405	Nysa-Polana	-0.1200	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.4155	0.1730	0.0460	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
3.92	0.185	0.185	Masiero	2011ApJ...741...68M	NEATM
4.61	0.540	0.540	Masiero	2012ApJ...759L...8M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.251	0.0710	0.0710	Masiero	2012ApJ...759L...8M	NEATM
0.316	0.0824	0.0824	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
14.10			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
16.7	2	Synodic	Higgins	2008MPBu...35..123H	Lightcurve
18.98	2	Synodic	Erasmus	2020ApJS..247...13E	Lightcurve

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
L		0.09		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
L	L	0.5741	0.5741	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S		0.168		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT