2090 Mizuho
| Discovery U–B = 0.499[1] | |
|---|---|
| 10.99[1][3][5][6] | |
2090 Mizuho, provisional designation 1978 EA, is a stony asteroid from the outer region of the asteroid belt, approximately 18 kilometers in diameter.
The asteroid was discovered on 12 March 1978, by Japanese astronomer Takeshi Urata at the JCPM Yakiimo Station in Shimizu, Japan, who named it after his daughter, Mizuho Urata.[8]
Orbit and classification
Mizuho orbits the Sun in the outer main-belt at a distance of 2.7–3.5 AU once every 5 years and 5 months (1,967 days). Its orbit has an eccentricity of 0.13 and an inclination of 12° with respect to the ecliptic.[1]
The asteroid was first identified as 1937 RE at
Heidelberg Observatory in 1951, extending the Mizuho's observation arc by 27 years prior to its official discovery observation.[8]
Physical characteristics
In the
Tholen classification, Mizuho is characterized as a common S-type asteroid.[1]
Rotation period
In February 2010, a rotational
U=2+).[7]
Diameter and albedo
According to the surveys carried out by the Japanese
albedo of between 0.207 and 0.219, which is typical for stony asteroids.[4][5][6] The Collaborative Asteroid Lightcurve Link, however assumes a standard albedo for a carbonaceous C-type asteroid of 0.057 and correspondingly calculates a much larger diameter of 35.3 kilometers.[3]
Naming
The discoverer named this
M.P.C. 4482).[10]
References
- ^ a b c d e f g h "JPL Small-Body Database Browser: 2090 Mizuho (1978 EA)" (2017-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 10 June 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (2090) Mizuho". Asteroid Lightcurve Database (LCDB). Retrieved 7 December 2016.
- ^ . Retrieved 7 December 2016.
- ^ .
- ^ )
- ^ ISSN 1052-8091. Retrieved 7 December 2016.
- ^ a b "2090 Mizuho (1978 EA)". Minor Planet Center. Retrieved 7 December 2016.
- Bibcode:1994ASPC...63..297K. Retrieved 7 December 2016.
- ISBN 978-3-642-01964-7.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Geneve, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2090 Mizuho at AstDyS-2, Asteroids—Dynamic Site
- 2090 Mizuho at the JPL Small-Body Database
