J/A+A/559/A106 Time-series photometry of 2012 DA14 (Terai+, 2013)
Time-series photometry of Earth flyby asteroid 2012 DA14.
Terai T., Urakawa S., Takahashi J., Yoshida F., Oshima G., Aratani K.,
Hoshi H., Sato T., Ushioda K., Oasa Y.
<Astron. Astrophys. 559, A106 (2013)>
=2013A&A...559A.106T 2013A&A...559A.106T
ADC_Keywords: Minor planets ; Photometry
Keywords: minor planets, asteroids: individual: 2012 DA14 -
methods: observational - techniques: photometric
Abstract:
The object 2012 DA14 is a near-Earth asteroid with a size of several
tens of meters. It had approached closely the Earth on 15 February
2013 UT, providing an opportunity for precise measurements of this
tiny asteroid.
The solar phase angle of 2012 DA14 had varied widely around its
closest approach but was almost constant during the following night.
We performed time-series photometric observations on those two nights
to determine the rotational properties and phase effect.
The observations were carried out using the 0.55-m telescope at
Saitama University, Japan. The R-band images were obtained
continuously over a 2h period at the closest approach and for about 5h
on the next night.
Description:
table1.dat shows the R-band lightcurve of 2012 DA14 around the closest
approach at 19:33 UT on February 15, 2013.
table2.dat shows the R-band lightcurve of 2012 DA14 on February 16,
2013 UT.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 27 101 Light curve of 2012 DA14 on Feb 15, 2013 (UT)
table2.dat 23 74 Light curve of 2012 DA14 on Feb 16, 2013 (UT)
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Table:
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Planet Name H Diam i e a
mag km deg AU
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367943 2012 DA14 24 --- 11.608175 0.08931621 0.91028862
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d MJD Modified Julian Date
12- 15 F4.1 deg PA Solar phase angle
17- 21 F5.3 mag Rmag Apparent magnitude in R filter
23- 27 F5.3 mag e_Rmag Error of Rmag
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d MJD Modified Julian Date
12- 17 F6.3 mag Rmag Apparent magnitude in R filter
19- 23 F5.3 mag e_Rmag Error of Rmag
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Acknowledgements:
Tsuyoshi Terai, tsuyoshi.terai(at)nao.ac.jp
(End) Tsuyoshi Terai [NAOJ] , Patricia Vannier [CDS] 02-Oct-2013