2012 TC4 - An unusual fast-rotating PHA with C-type taxonomy

Zhong Yi Lin; Wing Huen Ip; Chow Choong Ngeow

doi:10.1016/j.pss.2018.07.012

2012 TC4 - An unusual fast-rotating PHA with C-type taxonomy

Zhong Yi Lin, Wing Huen Ip, Chow Choong Ngeow

Graduate Institute of Astronomy

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2 Scopus citations

Abstract

The potentially hazardous asteroid 2012 TC4 made an Earth close approach at a distance of 0.11 lunar distance on 12 October 2017. Photometric observations were carried out between October 11 and October 12 at the Lulin Observatory at short cadence. Data analysis of the light curves shows that this PHA has a fast rotation period of 12.25 min, a light curve variation amplitude of 1.2±0.1 mag corresponding to an axial ratio of about 3.0. Our BVRI photometry also indicates that 2012 TC4 is a C-type asteroid. With the C-type albedo of 0.065 and an absolute magnitude of H = 26.613± 0.350, its effective diameter can be derived to be 24.8_−8.0 ^+19.1 m.

Original language	English
Pages (from-to)	54-58
Number of pages	5
Journal	Planetary and Space Science
Volume	166
DOIs	https://doi.org/10.1016/j.pss.2018.07.012
State	Published - Feb 2019

Keywords

2012 TC4
Near earth asteroids

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title = "2012 TC4 - An unusual fast-rotating PHA with C-type taxonomy",

abstract = "The potentially hazardous asteroid 2012 TC4 made an Earth close approach at a distance of 0.11 lunar distance on 12 October 2017. Photometric observations were carried out between October 11 and October 12 at the Lulin Observatory at short cadence. Data analysis of the light curves shows that this PHA has a fast rotation period of 12.25 min, a light curve variation amplitude of 1.2±0.1 mag corresponding to an axial ratio of about 3.0. Our BVRI photometry also indicates that 2012 TC4 is a C-type asteroid. With the C-type albedo of 0.065 and an absolute magnitude of H = 26.613± 0.350, its effective diameter can be derived to be 24.8−8.0 +19.1 m.",

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author = "Lin, {Zhong Yi} and Ip, {Wing Huen} and Ngeow, {Chow Choong}",

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T1 - 2012 TC4 - An unusual fast-rotating PHA with C-type taxonomy

AU - Lin, Zhong Yi

AU - Ip, Wing Huen

AU - Ngeow, Chow Choong

PY - 2019/2

Y1 - 2019/2

N2 - The potentially hazardous asteroid 2012 TC4 made an Earth close approach at a distance of 0.11 lunar distance on 12 October 2017. Photometric observations were carried out between October 11 and October 12 at the Lulin Observatory at short cadence. Data analysis of the light curves shows that this PHA has a fast rotation period of 12.25 min, a light curve variation amplitude of 1.2±0.1 mag corresponding to an axial ratio of about 3.0. Our BVRI photometry also indicates that 2012 TC4 is a C-type asteroid. With the C-type albedo of 0.065 and an absolute magnitude of H = 26.613± 0.350, its effective diameter can be derived to be 24.8−8.0 +19.1 m.

AB - The potentially hazardous asteroid 2012 TC4 made an Earth close approach at a distance of 0.11 lunar distance on 12 October 2017. Photometric observations were carried out between October 11 and October 12 at the Lulin Observatory at short cadence. Data analysis of the light curves shows that this PHA has a fast rotation period of 12.25 min, a light curve variation amplitude of 1.2±0.1 mag corresponding to an axial ratio of about 3.0. Our BVRI photometry also indicates that 2012 TC4 is a C-type asteroid. With the C-type albedo of 0.065 and an absolute magnitude of H = 26.613± 0.350, its effective diameter can be derived to be 24.8−8.0 +19.1 m.

KW - 2012 TC4

KW - Near earth asteroids

UR - http://www.scopus.com/inward/record.url?scp=85051621942&partnerID=8YFLogxK

U2 - 10.1016/j.pss.2018.07.012

DO - 10.1016/j.pss.2018.07.012

M3 - 期刊論文

AN - SCOPUS:85051621942

SN - 0032-0633

VL - 166

SP - 54

EP - 58

JO - Planetary and Space Science

JF - Planetary and Space Science

ER -

2012 TC4 - An unusual fast-rotating PHA with C-type taxonomy

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Keywords

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