Masahiro Koishikawa
Encyclopedia
is a Japanese
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

 He has studied both major and minor planets, and has discovered asteroids and comets.

Employment

Koishikawa has been a staff member of the Sendai Astronomical Observatory since 1972. His research is based out of the Sendai's Ayashi station.

Asteroid 6097

Asteroid 6097
6097 Koishikawa
6097 Koishikawa is a main-belt asteroid discovered on October 29, 1991 by Endate and Watanabe at Kitami.- External links :*...

 was discovered on October 29, 1991 by Kin Endate
Kin Endate
is a Japanese amateur astronomer who has discovered 600 asteroids , placing him among the most prolific discoverers of minor planets. His discoveries include the Trojan asteroid 1990 VU1 and the Mars-crossing asteroid 6500 Kodaira...

 and Kazuro Watanabe
Kazuro Watanabe
is an amateur Japanese astronomer. He was born in Hokkaidō, Japan and is a member of the Astronomical Society of Japan and Oriental Astronomical Association....

 at Kitami. The Main-belt asteroid was given the name 6097 Koishikawa in honor of Masahiro Koishikawa.

Discoveries

This is a partial list of discoveries made by Masahiro Koishikawa.
Number Name Discovery Date
3994 Ayashi
3994 Ayashi
3994 Ayashi is a main-belt asteroid discovered on December 2, 1988 by Koishikawa, M. at Sendai.- External links :*...

 
12/2/1988
1988 in science
The year 1988 in science and technology involved many significant events, some listed below.-Astronomy and space exploration:* September 29 – NASA resumes space shuttle flights, grounded after the Challenger disaster....

4292 Aoba
4292 Aoba
4292 Aoba is a main-belt asteroid discovered on November 4, 1989 by Masahiro Koishikawa at Ayashi.- External links :*...

 
11/4/1989
4407 Taihaku
4407 Taihaku
4407 Taihaku is a main-belt asteroid discovered on October 13, 1988 by Masahiro Koishikawa at Ayashi.- External links :*...

 
10/13/1988
4539 Miyagino
4539 Miyagino
4539 Miyagino is a main-belt asteroid discovered on November 8, 1988 by M. Koishikawa at Ayashi.- External links :*...

 
11/8/1998
4871 Riverside
4871 Riverside
4871 Riverside is a main-belt asteroid discovered on November 24, 1989 by M. Koishikawa at Ayashi Station.- External links :*...

 
11/24/1989
5128 Wakabayashi
5128 Wakabayashi
5128 Wakabayashi is a main-belt asteroid discovered on March 30, 1989 by M. Koishikawa at Ayashi.- External links :**...

 
2/20/1989
1989 in science
The year 1989 in science and technology involved many significant events, some listed below.-Astronomy:* August – the asteroid 4769 Castalia is the first asteroid directly imaged, by radar from Arecibo....

5751 Zao
5751 Zao
5751 Zao also designated 1992 AC is an Amor asteroid discovered on January 5, 1992 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.-Physical properties:...

 
1/5/1992
1992 in science
The year 1992 in science and technology involved many significant events, some listed below.-Astronomy:* First confirmed detection of extrasolar planets with the discovery of several terrestrial-mass planets orbiting the pulsar PSR B1257+12 by Aleksander Wolszczan and Dale Frail.* Asteroid 5751 Zao...

6089 Izumi
6089 Izumi
6089 Izumi is a main-belt asteroid discovered on January 5, 1989 by M. Koishikawa at Ayashi.- External links :*...

 
1/5/1989
6190 Rennes
6190 Rennes
6190 Rennes is a main-belt asteroid discovered on October 8, 1989 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory....

 
10/8/1989
6349 Acapulco
6349 Acapulco
6349 Acapulco is a main belt asteroid discovered on February 8, 1995 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.-References:...

 
2/8/1995
1995 in science
The year 1995 in science and technology involved many significant events, listed below.-Archaeology:* January 18 - In southern France near Vallon-Pont-d'Arc a network of caves are discovered that contain paintings and engravings that are 17,000 to 20,000 years old.* Wes Linster discovers the first...

6859 Datemasamune
6859 Datemasamune
6859 Datemasamune is an inner main-belt asteroid discovered on February 13, 1991 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.- External links :*...

 
2/13/1991
1991 in science
The year 1991 in science and technology involved many significant events, some listed below.-Astronomy and space exploration:* May 18 – Helen Sharman becomes the first British person in space, flying with the Soyuz TM-12 mission...

7484 Dogo Onsen
7484 Dogo Onsen
7484 Dogo Onsen is a main-belt asteroid discovered on November 30, 1994 by Nakamura, A. at Kuma.- External links :*...

 
11/30/1994
1994 in science
The year 1994 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* July 16 – July 22 – The fragments of Comet Shoemaker-Levy 9 impact the planet Jupiter...

7816 Hanoi
7816 Hanoi
7816 Hanoi is a Mars-crossing asteroid discovered on December 18, 1987 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.- External links :*...

 
12/18/1987
1987 in science
The year 1987 in science and technology involved many significant events, some listed below.-Astronomy:* February 23 – Supernova 1987a is observed, the first "naked-eye" supernova since 1604.* Asteroid 7816 Hanoi is discovered by Masahiro Koishikawa....

8084 Dallas
8084 Dallas
8084 Dallas is a main-belt asteroid discovered on February 6, 1989 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.-External links:...

 
2/6/1989
10500 Nishi-koen
10500 Nishi-koen
10500 Nishi-koen is a main-belt asteroid discovered on April 3, 1987 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.- External links :*...

 
4/3/1987
11514 Tsunenaga
11514 Tsunenaga
11514 Tsunenaga is a main-belt asteroid discovered on February 13, 1991 by M. Koishikawa at the Sendai Astronomical Observatory Ayashi station.- External links :*...

 
2/13/1991
12252 Gwangju
12252 Gwangju
12252 Gwangju is a main-belt asteroid discovered on November 8, 1988 by M. Koishikawa at Sendai Astronomical Observatory Ayashi station.It was named after Gwangju metropolitan city, a sister city of Sendai.- External links :*...

 
11/3/1998
14032 Mego
14032 Mego
14032 Mego is a main belt asteroid with an orbital period of 1493.7144496 days . The asteroid was discovered on December 4, 1994 by Masahiro Koishikawa.-References:...

 
12/4/1994
30963 Mount Banzan
30963 Mount Banzan
30963 Mount Banzan is a Mars-crossing asteroid discovered on November 29, 1994 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.- External links :*...

 
11/29/1993
1993 in science
The year 1993 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* December 2 - STS-61 is launched. This Space Shuttle mission to the Hubble Space Telescope installs corrective optics, plus upgrades, that not only allow the telescope to focus...

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