J/A+A/596/A40 Main-belt asteroids optical light curves (Szabo+, 2016)
Uninterrupted optical light curves of main-belt asteroids from the K2 Mission.
Szabo R., Pal A., Sarneczky K., Szabo Gy.M., Molnar L., Kiss L.L.,
Hanyecz O., Plachy E., Kiss Cs.
<Astron. Astrophys. 596, A40 (2016)>
=2016A&A...596A..40S 2016A&A...596A..40S (SIMBAD/NED BibCode)
ADC_Keywords: Minor planets ; Photometry
Keywords: techniques: photometric - minor planets, asteroids: general
Abstract:
Because the second reaction wheel failed, a new mission was conceived
for the otherwise healthy Kepler space telescope. In the course of the
K2 mission, the telescope is staring at the plane of the Ecliptic.
Thousands of solar system bodies therefore cross the K2 fields and
usually cause additional noise in the highly accurate photometric
data.
We here follow the principle that some person's noise is another
person's signal and investigate the possibility of deriving
continuous asteroid light curves. This is the first such endeavor. In
general, we are interested in the photometric precision that the K2
mission can deliver on moving solar system bodies. In particular, we
investigate space photometric optical light curves of main-belt
asteroids.
We studied the K2 superstamps that cover the fields of M35, and
Neptune together with Nereid, which were observed in the long-cadence
mode (29.4min sampling). Asteroid light curves were generated by
applying elongated apertures. We used the Lomb-Scargle method to
determine periodicities that are due to rotation.
Description:
These files contain the photometric measurements of main-belt
asteroids observed with the Kepler space telescope during the K2
Mission in the fields of the open cluster M35 and the Neptune/Nereid.
Additionally, the observational data (start time, end time, length of
observations, duty cycle, brightness) are listed, as well as
rotational period and amplitude values determined from the K2
observations, where available.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
m35_aste.dat 80 867 Observational and rotational parameters of
asteroids in the M35 field
m35_list.dat 10 926 List of asteroids in the M35 field with
photometry in m35_phot.dat file
m35_phot.dat 35 47711 Photometry of 926 asteroids in the M35 field
ner_aste.dat 80 88 Observational and rotational parameters of
asteroids in the Nereid field
ner_list.dat 10 96 List of asteroids in the Nereid field with
photometry in ner_phot.dat file
ner_phot.dat 35 6196 Photometry of 96 asteroids in the Nereid field
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See also:
B/astorb : Orbits of Minor Planets (Bowell+ 2014)
Byte-by-byte Description of file: m35_aste.dat ner_aste.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Name of the asteroid
11- 19 F9.5 --- ObsS Beginning of observation (BJD-2456700)
21- 28 F8.4 --- ObsE End of observation (BJD-2456700)
30- 35 F6.4 d Length Length of observations
37- 39 I3 --- Nobs Number of observations
41- 45 F5.3 --- DC [0/1] Duty cycle of observations
47- 52 F6.3 mag Rmag USNO R brightness
54 A1 --- l_Per Limit flag on Per
55- 61 F7.3 h Per ? Rotational period
66- 70 F5.3 h e_Per ? Error of the rotation period
75 A1 --- l_Amp Limit flag on Amp
76- 80 F5.3 mag Amp ? Amplitude of variation
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Byte-by-byte Description of file: m35_list.dat ner_list.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Name of the asteroid
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Byte-by-byte Description of file: m35_phot.dat ner_phot.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Name of the asteroid
13- 20 F8.4 d Obs.date Time of observation (BJD-2456700)
23- 28 F6.3 mag Rmag Brightness, USNO R
31- 35 F5.3 mag e_Rmag Magnitude error, USNO R
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Acknowledgements:
Robert Szabo, rszabo(at)konkoly.hu
(End) Patricia Vannier [CDS] 26-Sep-2016