Boucolion

11552, 1975 NP1, 1975NP1, 1993 BD4, 1993BD4, 1994 CE20, 1994CE20, J75N01P, J93B04D, J94C20E

All data for this body: [vot]

MPC data

Name (number)	Boucolion (11552)
a	5.29209
e	0.15474
i / sin(i)	14.6622 / 0.25312
q	4.47321
Q	6.11096
ω	183.4412
Node	138.2835
m	71.1474
n	0.0810
Epoch	2460800.5

n_obs	4068
n_opp	28
Years observed	1993-2025
rms	0.67

Best values

	Value	Standard error
Parent

a_p
e_p
sin(i_p)
G	0.150
H	10.110
Mass
D	49.75	0.406
pV	0.065	0.0060

	Value
Rotational Period	32.400
Period quality	2
Spectral Class	D
Spectral Class Score	8.952

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
47.39	0.660	0.660	Grav	2011ApJ...742...40G	NEATM
51.14	0.520	0.520	Grav	2012ApJ...759...49G	NEATM
53.91	4.320	4.320	Usui	2011PASJ...63.1117U	NEATM
55.24	11.050	11.050	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.054	0.0220	0.0220	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.062	0.0070	0.0070	Grav	2012ApJ...759...49G	NEATM
0.079	0.0140	0.0140	Grav	2011ApJ...742...40G	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
10.11			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
16.15	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
16.177	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
16.1942	2	Sidereal	Durech	2023A&A...675A..24D	Model
32.44	2	Synodic	Stephens	2015MPBu...42R.216S	Lightcurve

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
D		0.66		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
D	D	0.5674	0.5460	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
D	D	0.7046	0.5460	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
L				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
L	D	0.3655	0.5460	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT