536 Merapi

536 MerapiDiscovery

Discovered by| George Henry Peters
Discovery site| Washington, D.C.
Discovery date| 11 May 1904
Designations

MPC designation

| (536) Merapi
Pronunciation| /məˈrɑːpi/
Named after| Mount Mĕrapi, West Sumatera[1]

Alternative designations

| 1904 OF
Adjectives| Merapian
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 111.94 yr (40885 d)
|{{{apsis}}}|helion}}| 3.7977 astronomical unit|AU (568.13 Gm)
|{{{apsis}}}|helion}}| 3.1992 AU (478.59 Gm)

Semi-major axis

| 3.4984 AU (523.35 Gm)
Eccentricity| 0.085546
Orbital period| 6.54 yr (2390.1 d)
Mean anomaly| 302.40°
Mean motion| 0° 9m 2.232s / day
Inclination| 19.425°
Longitude of ascending node| 59.239°

|{{{apsis}}}|helion}}

| 295.862°
Physical characteristics
Mean radius| 75.71±4.5 km[2]
77.585 ± 1.765 km[3]
Mass| (2.61 ± 0.47) × 1019 kg[3]
Mean density| 13.36 ± 2.59 g/cm3[3]
Rotation period| 8.78 h (0.366 d)
Geometric albedo| 0.0452±0.006
Absolute magnitude (H)| 8.2

Merapi (minor planet designation: 536 Merapi) is a main belt asteroid orbiting the Sun. It was discovered by American astronomer George Henry Peters on May 11, 1904, from Washington, D.C.[4]

Photometric observations of this asteroid at the Oakley Observatory in Terre Haute, Indiana, during 2006 gave a light curve with a period of 8.809 ± 0.008 hours and a brightness variation of 0.23 ± 0.05 in magnitude.[5]

## References

1. ↑ (in Indonesian) http://langitselatan.com/2011/01/12/nama-nama-indonesia-pun-tertera-di-angkasa/
2. ↑ 2.0 2.1 Yeomans, Donald K., "536 Merapi", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=536, retrieved 8 May 2016.
3. ↑ 3.0 3.1 3.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
4. ↑ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html, retrieved 2013-04-07.
5. ↑ Ditteon, Richard; Hawkins, Scot (September 2007), "Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006", The Minor Planet Bulletin 34 (3): 59–64, Bibcode: 2007MPBu...34...59D.

## External links

* Lightcurve plot of (536) Merapi, Antelope Hills Observatory
* 536 Merapi at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 536 Merapi at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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