Tumbling Asteroids

This is a list of characteristics of tumbling asteroids (NPA rotators) derived from their lightcurve and/or radar observations. The listed values are the best published estimates of the system's parameters as well as unpublished results included with permission of the authors. The list is ordered according to their PAR codes (see the reference below). A complete list of PAR codes for asteroids we have investigated so far is available here.
This list is created with a primary intention to give an overview of the NPA rotators parameters and to summarize data for statistical analyses of the NPA rotators population.

Last updated: 2004 June 20

Object PAR log &tau_norm P₁
[h] P₂
[h] A [mag] strongest f's H [mag] D [km] Taxon.
Class Orb.
Type Observations Further
Apparitions
(until 2010)

(4179) Toutatis -4 1.2 176 130 1.2 2f₁,f₂,(f₁-2f₂),
2(f₁+f₂) 15.3 1.9-4.6 S Apollo Ra, Lc (1992 Dec, 1993 Jan)

2002 TD₆₀ -3 to -4 -2.2 2.851 6.783 1.4 2(f₁+f₂),
2f₁,2f₂ 19.41(R) 0.6x0.4x0.2 Amor Lc (2002 Nov-Dec)

2000 WL₁₀₇ -3 -3.9 0.1609 0.2188 1.1 f₁,2f₂ 24.4 ~0.04 Apollo Lc (2000 Dec)

(54789) 2001 MZ₇ -3 -0.6 37.57^a 52.79^a 1.4 2f₁,2f₂ 15.1 ~3 C Amor Lc (2003 Feb-Jun)

2002 NY₄₀ -2 to -3 0.3 19.98 (18.43) 1.3 2f₁ 19.2 0.4 Q Apollo Lc (2002 Jul-Aug), Ra (2002 Aug)

(253) Mathilde -2 to -3 0.0 418 (250) 0.5 10.28 58 Cb MB Lc (1995 Feb-Jun)

(3288) Seleucus -2 0.6 ~75 1.0 15.5 2.2 K Amor Lc (1982 Mar-Apr)

(3691) Bede -2 1.2 227 0.5 14.78 ~6 Xc Amor Lc (1995 Dec - 1996 Mar)

(4486) Mithra -2 > 0 (days) 15.6 ~2.4 S Apollo Ra (2000 Jul-Aug)

(5645) 1990 SP -2 0.0 30.39 0.7 17.2 ~1 Apollo Lc (2002 Mar-May)

(13651) 1997 BR -2 0.5 33.64 1.2 18.05 ~0.8 S Apollo Lc (1997 Feb-Mar)

(16064) 1999 RH₂₇ -2 1.6 178.5 0.7 16.4 ~2.8 C Amor Lc (1999 Oct - 2000 Feb)

(53319) 1999 JM₈ -2 0.4 (136) 0.7 15.3 7 X Apollo Ra (1999 Jul-Aug), Lc (1999 Jul)

Object PAR log &tau_norm P₁
[h] P₂
[h] A [mag] strongest f's H [mag] D [km] Taxon.
Class Orb.
Type Observations Further
Apparitions
(until 2010)

Explanation of symbols:

log &tau_norm = log(&tau/4.5 b.y.). Logarithm of the damping time scale normalized to the age of the Solar System

P₁, P₂ Most significant periods derived from the lightcurve and/or radar observations

A Amplitude of the lightcurve

strongest f's Linear combinations of the main frequencies (f_i=1/P_i) with the strongest signals in the lightcurve

H Absolute magnitude

D Mean diameter or dimensions

Orb. Type MB - Main Belt

Observations Lc - Lightcurve;
Ra - Radar

Further Apparitions Listed are apparitions until 2010 in which the asteroid reaches V=17 or less or approaches to the Earth to 0.2 AU or less, providing a favorable opportunity for lightcurve or radar observations, respectively.

Uncertainties of the estimated values:

References:

This page is maintained by Petr Pravec and Peter Scheirich, Ondrejov Observatory. Comments can be mailed to ppravec@asu.cas.cz.

Link to the Ondrejov NEO program page.

log &tau_norm	= log(&tau/4.5 b.y.). Logarithm of the damping time scale normalized to the age of the Solar System
P₁, P₂	Most significant periods derived from the lightcurve and/or radar observations
A	Amplitude of the lightcurve
strongest f's	Linear combinations of the main frequencies (f_i=1/P_i) with the strongest signals in the lightcurve
H	Absolute magnitude
D	Mean diameter or dimensions
Orb. Type	MB - Main Belt
Observations	Lc - Lightcurve; Ra - Radar
Further Apparitions	Listed are apparitions until 2010 in which the asteroid reaches V=17 or less or approaches to the Earth to 0.2 AU or less, providing a favorable opportunity for lightcurve or radar observations, respectively.