Masaru Arai

Short description: Japanese astronomer

Minor planets discovered: 45 [1] see § List of discovered minor planets

Masaru Arai (新井 優, Arai Masaru; born 1952) is a Japanese amateur astronomer and a discoverer of minor planets and comets.[2]

He is credited by the Minor Planet Center with the discovery of 45 minor planets during 1988–1991, all in collaboration with astronomer Hiroshi Mori.[1] On 5 January 1991, he has also discovered Comet Arai, C/1991 A2.[3][4]

The main-belt asteroid 21082 Araimasaru, discovered by Tsutomu Hioki and Shuji Hayakawa at Okutama in 1991, was named in his honor.[2] Naming citation was published on 6 January 2003 (M.P.C. 47301).[5]

## List of discovered minor planets

3823 Yorii | 10 March 1988 | list [A]

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3996 Fugaku | 5 December 1988 | list [A]
4262 DeVorkin | 5 February 1989 | list [A]
4291 Kodaihasu | 2 November 1989 | list [A]
4495 Dassanowsky | 6 November 1988 | list [A]
4901 Ó Briain | 3 November 1988 | list [A]
(5732) 1988 WC | 29 November 1988 | list [A]
(5746) 1991 CK | 5 February 1991 | list [A]
(5913) 1990 BU | 21 January 1990 | list [A]
6299 Reizoutoyoko | 5 December 1988 | list [A]
(6325) 1991 EA1 | 14 March 1991 | list [A]
6380 Gardel | 10 February 1988 | list [A]
(6638) 1989 CA | 2 February 1989 | list [A]
(6703) 1988 CH | 10 February 1988 | list [A]
(6704) 1988 CJ | 10 February 1988 | list [A]
6709 Hiromiyuki | 2 February 1989 | list [A]
(6823) 1988 ED1 | 12 March 1988 | list [A]
(6900) 1988 XD1 | 2 December 1988 | list [A]
(7409) 1990 BS | 21 January 1990 | list [A]

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(7417) 1990 YE | 19 December 1990 | list [A]
(7522) 1991 AJ | 9 January 1991 | list [A]
(7570) 1989 CP | 5 February 1989 | list [A]
(7576) 1990 BN | 21 January 1990 | list [A]
(7643) 1988 VQ1 | 6 November 1988 | list [A]
(8484) 1988 VM2 | 10 November 1988 | list [A]
(8506) 1991 CN | 5 February 1991 | list [A]
(9952) 1991 AK | 9 January 1991 | list [A]
10776 Musashitomiyo | 12 February 1991 | list [A]
(11038) 1989 EE1 | 8 March 1989 | list [A]
11515 Oshijyo | 12 February 1991 | list [A]
(12255) 1988 XR1 | 7 December 1988 | list [A]
13017 Owakenoomi | 18 March 1988 | list [A]
(15737) 1991 CL | 5 February 1991 | list [A]
(16431) 1988 VH1 | 6 November 1988 | list [A]
(16432) 1988 VL2 | 10 November 1988 | list [A]
(16526) 1991 DC | 17 February 1991 | list [A]
(19979) 1989 VJ | 2 November 1989 | list [A]

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(20001) 1991 CM | 5 February 1991 | list [A]
(21017) 1988 VP | 3 November 1988 | list [A]
(23479) 1991 CG | 5 February 1991 | list [A]
(39537) 1990 VV2 | 12 November 1990 | list [A]
(43773) 1989 AJ | 4 January 1989 | list [A]
(48436) 1989 VK | 2 November 1989 | list [A]
(52269) 1988 CU | 13 February 1988 | list [A]
(65677) 1989 EB1 | 1 March 1989 | list [A]
Co-discovery made with: A H. Mori

## References

1. ↑ 1.0 1.1 "Minor Planet Discoverers (by number)". Minor Planet Center. 16 November 2016. http://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html. Retrieved 3 January 2017.
2. ↑ 2.0 2.1 Schmadel, Lutz D. (2006). "(21082) Araimasaru [2.57, 0.31, 6.0]". Dictionary of Minor Planet Names – (21082) Araimasaru, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 164. doi:10.1007/978-3-540-34361-5_1884. ISBN 978-3-540-34361-5.
3. ↑ "JPL Small-Body Database Browser: C/1991 A2 (Arai)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1001247. Retrieved 3 January 2017.
4. ↑ British Astronomical Association (2008). British Astronomical Association circular.
5. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 3 January 2017.

## External links

* Yorii Observatory, instruments and discoveries Script error: The function "in_lang" does not exist.
* COMET ARAI (1991b), IAUC 5157, 7 January 1991
* COMET ARAI (1991b), IAUC 5170, 18 January 1991

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