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...