1987 WP

1987WP, 1985 KF1, 1985KF1, 1998 VX, 1998VX, 27708, J85K01F, J87W00P, J98V00X

All data for this body: [vot]

MPC data

Name (number)	1987 WP (27708)
a	2.40280
e	0.28049
i / sin(i)	21.0680 / 0.35948
q	1.72882
Q	3.07677
ω	293.2131
Node	233.9888
m	306.3021
n	0.2646
Epoch	2460800.5

n_obs	3644
n_opp	21
Years observed	1987-2025
rms	0.67

Best values

	Value	Standard error
Parent	Phocaea (25)

a_p	2.403
e_p	0.263
sin(i_p)	0.390
G	0.150
H	13.190
Mass
D	6.34	0.114
pV	0.281	0.0276

	Value
Rotational Period	96.600
Period quality	2
Spectral Class	S
Spectral Class Score	5.934

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
25	Phocaea	0	Phocaea		Novakovic	2019EPSC...13.1671N	HCM
25	Phocaea	701	Phocaea	0.0400	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.4029	0.2627	0.3900	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
6.18	0.180	0.180	Masiero	2012ApJ...759L...8M	NEATM
6.35	0.190	0.190	Masiero	2011ApJ...741...68M	NEATM
6.58	0.250	0.250	Usui	2011PASJ...63.1117U	NEATM
6.76	0.680	0.680	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.225	0.0450	0.0450	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.303	0.0604	0.0604	Masiero	2011ApJ...741...68M	NEATM
0.320	0.0430	0.0430	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
13.19			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
96.68	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
S		0.989		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT