2015 Thailand bolide

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2015 Thailand bolideDate| September 7, 2015 (2015-09-07)

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Time| 08:41 local time (01:41 UTC)
Location| Kanchanaburi, Thailand
Coordinates|  [ ⚑ ] : 14°30′N 98°48′E﻿ / ﻿14.5°N 98.8°E﻿ / 14.5; 98.8
Cause| meteor
Impact energy: 3.9 kiloton
Radiated energy: 1.798 TJ[1]
Bolides that disintegrated in the Earth's atmosphere worldwide, 1994–2013

On September 7, 2015, at about 08:40 local time a bolide meteor appeared over Thailand and burned up approximately 100 km (62 mi) above the ground.[2] The meteor briefly flared up producing a green and orange glow before disappearing without a sound of explosion and leaving a white smoke trail. The meteor was recorded by several dashcams during the morning rush hour in Bangkok,[2] and sightings were also reported in Thai towns of Kanchanaburi and Nakhon Ratchasima.[3] The meteor was visible for about four seconds before fading out. As of September 8, 2015 no strewn field has been found. The impact energy was the largest of 2015 at 3.9 kiloton.[1] The last impact this large was on 23 August 2014 over the Southern Ocean.[1]

## Contents

* 1 Identification
* 2 Other 2015 bolide events in Thailand
* 3 Notes
* 4 References
* 5 External links

## Identification

The object was initially believed to be FLOCK 1B-11 satellite which was due to burn in the atmosphere about that time[3] or a crashing aircraft.[4] However, because the object travelled in the direction opposite to the east–west axis of artificial satellites, it was identified by the Deputy Director of Thai National Astronomical Research Institute, Saran Poshyachinda, as "an asteroid"[2][lower-alpha 1] and as a meteor by the president of the Thai Astronomical Society Prapee Viraporn.[5] The object was also identified as a meteor by the Chachoengsao Observatory astronomer Worawit Tanwutthibundit.[4] Tanwutthibundit, who witnessed the event, estimated the object's speed at nearly 50 miles per second before disintegration.[6] A similar explanation was suggested by the former member of Hubble Space Telescope team, Phil Plait, who said that "it was almost certainly a good-sized rock burning up in our atmosphere".[3][7] According to Plait, the object may have had a steep angle of entry.[3]

Sound from the meteor was reported in three districts of Kanchanaburi Province: Thong Pha Phum, Sai Yok and Si Sawat.[8] Governor of Kanchanaburi Province Wan-chai Osukhonthip ordered police and Sai Yok National Park rangers to search Wang Krachae and Bong Ti subdistricts in Sai Yok District for meteor debris.[8]

The National Astronomical Research Institute of Thailand gave a press release on 14 September, estimating that the meteor was about 3.5 metres in diameter with a mass of 66 tonnes, entering the atmosphere at 21 km/s and having maximum brightness at 29.3 km altitude. The impact energy was equivalent to 3.5 kilotonnes of TNT; its trajectory was 269.8 degrees, with an impact angle of 45.4 degrees. It also estimates that meteorite remnants may have fallen around the area of Sai Yok National Park.[9]

## Other 2015 bolide events in Thailand

A previous bolide event was recorded in Thailand on March 2, 2015, and was also seen in Bangkok.[10]

On 2 November 2015, a dramatic green fireball lit up the night sky over Thailand as it streaked past and exploded.[11][12][13]

## Notes

1. ↑ "Asteroid" may have been a mistranslation.

## References

1. ↑ 1.0 1.1 1.2 Fireball and Bolide Reports (JPL)
2. ↑ 2.0 2.1 2.2 "Watch this Dash-Cam Footage of a Mysterious Fireball Blazing Over Bangkok". CNN. September 7, 2015. http://edition.cnn.com/2015/09/07/asia/bangkok-fireball/.
3. ↑ 3.0 3.1 3.2 3.3 "Fireball hurtles over Thailand". Bangkok Post. September 7, 2015. http://www.bangkokpost.com/news/general/683596/mysterious-fireball-sighted-over-bangkok.
4. ↑ 4.0 4.1 "Watch this Dash-Cam Footage of a Mysterious Fireball Blazing Over Bangkok". Time (magazine). September 7, 2015. http://time.com/4024251/fireball-bangkok/. Retrieved September 7, 2015.
5. ↑ "'Meteor explosion' captured by netizens". Bangkok Post. September 7, 2015. http://www.bangkokpost.com/vdo/thailand/683700/meteor-explosion-captured-by-netizens.
6. ↑ "Mysterious 'fireball' caught on camera blazing over Bangkok". The Telegraph. https://www.telegraph.co.uk/news/worldnews/asia/thailand/11848168/Mysterious-fireball-caught-on-camera-blazing-over-Bangkok.html.
7. ↑ Plait, Phil (7 September 2015). "Video of an Extremely Bright Fireball over Bangkok". Slate. http://www.slate.com/blogs/bad_astronomy/2015/09/07/bangkok_meteor_daytime_fireball.html. Retrieved 7 September 2015.
8. ↑ 8.0 8.1 "Exploding meteor sends social media into a tizzy". Nation Multimedia Group. September 8, 2015. http://www.nationmultimedia.com/webmobile/national/Exploding-meteor-sends-social-media-into-a-tizzy-30268361.html.
9. ↑ "สดร. เผยหลักฐานล่าสุด ลูกไฟจากวัตถุขนาด 66 ตัน พุ่งชนบรรยากาศโลก เหนือฟ้าที่กาญจนบุรี" [NARIT: evidence reveals fireball caused by 66-tonne object impacting atmosphere over Kanchanaburi] (Press release). National Astronomical Research Institute of Thailand. 14 September 2015. Archived from the original on 4 October 2015. Retrieved 3 October 2015.
10. ↑ "UPDATED: Strange white light in Bangkok sky (with video)". Bangkok Post. 3 March 2015. http://www.bangkokpost.com/learning/learning-from-news/487694/updated-strange-white-light-in-bangkok-sky-with-video.
11. ↑ Green fireball explodes over Bangkok
12. ↑ Meteor spotted burning above Bangkok sky for the second time in recent months
13. ↑ Ny kæmpe ildkugle eksploderede over Bangkok

## External links

* v
* t
* e

Modern impact events

On Earth|

| Pre-2000|

* 1490 Ch'ing-yang
* 1783 Great Meteor
* 1860 Great Meteor
* 1896 Madrid Meteor
* 1908 Tunguska
* 1913 Great Meteor Procession
* 1930 Curuçá River
* 1938 Chicora meteor
* 1947 Sikhote-Alin meteorite
* 1969 Murchison meteorite
* 1972 Great Daylight Fireball
* 1990 Earth-grazing meteoroid

|

Post-2000|

* 2002 Eastern Mediterranean
* 2002 Vitim
* 2007 Carancas
* 2008 TC3 impact
* 2008 Buzzard Coulee meteorite
* 2009 Sulawesi superbolide
* 2012 Sutter's Mill meteorite
* 2012 UK meteoroid
* 2012 Novato meteorite
* 2013 Chelyabinsk meteor
* Chelyabinsk meteorite
* 2014 AA impact
* 2014 Ontario fireball
* 2015 Kerala meteorite
* 2015 Thailand bolide
* WT1190F impact
* 2017 China bolide
* 2018 LA impact
* 2018 Kamchatka meteor
* 2019 MO impact

On Jupiter|

* 1994 Comet Shoemaker–Levy 9
* 2009 Jupiter impact
* 2010 Jupiter impact

Lists|

* Asteroid close approaches to Earth
* Comets
* Bolides
* Meteor air bursts
* Meteorite falls
* Minor planets
* crossing Earth's orbit

See also|

* Asteroid impact prediction
* Asteroid impact avoidance
* Bolide
* Earth-grazing fireball
* Meteor procession
* Meteor shower
* Meteorite
* Meteoroid
* Near-Earth object
* Potentially hazardous object

* v
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* e

2015 in space

* « 2014

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Launches|

| Space probes|

* LISA Pathfinder
* SMAP

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Space observatories|

* Astrosat
* DSCOVR

Impact events|

* 2015 Kerala meteorite
* 2015 Thailand bolide
* WT1190F impact

Selected comets|

* 15P/Finlay
* C/2014 Q2 (Lovejoy)
* 88P/Howell
* 22P/Kopff
* 10P/Tempel
* C/2013 US10

Selected NEOs|

* Closest asteroid approaches in 2015
* 2015 BP513
* (357439) 2004 BL86
* 2015 AZ43
* 1566 Icarus
* 2015 TB145
* 2007 VE191
* (33342) 1998 WT24
* (85989) 1999 JD6
* 2015 SO2

Exoplanets|

* Aldebaran b
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* KELT-4Ab
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* Kepler-451b
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* K2-3d
* K2-18b
* K2-22b
* WASP-121b
* Wolf 1061c

Discoveries|

* GW150914 (first observation of gravitational waves, announced in 2016)
* GW151226 (announced in 2016)
* 2015 TH367 (TNO)
* WISE J224607.57−052635.0 (galaxy)

Space
exploration|

* Dawn (Ceres orbit injection)
* Rosetta (orbiting comet 67P)
* MESSENGER (end of mission)
* New Horizons (flyby of Pluto)
* Akatsuki (Venus orbit injection)

* Category:2014 in space — Category:2015 in space — Category:2016 in space

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