(19694) Dunkelman Outer Main-belt Asteroid

Discovered on 8 September 1999 by CSS at Catalina.

Lawrence Dunkelman (b. 1917), of the Naval Research Laboratory and NASA Goddard Space Flight Center, measured the solar near-ultraviolet spectral distribution from Mt. Lemmon in 1952 and helped advise the Mercury astronauts on observations of the upper atmosphere and space phenomena from orbit.Naming citation (20020328/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Dunkelman is today

MercuryVenusEarthEarthMarsMarsDunkelmanDunkelman

Seen from above the solar system on 2026-10-14: Dunkelman is 3.41 au from the Sun and 2.44 au from Earth. Computed from JPL's orbital elements.

Facts

Number19694
Provisional designation1999 RX230
Orbit classOuter Main-belt Asteroid
Diameter15.3 km (#3,068 largest of 17,440 named asteroids with a measured size)
Albedo0.0830
Absolute magnitude (H)12.75
Orbital period6.69 years
Semi-major axis3.55 au
Perihelion – aphelion3.27 – 3.84 au
Eccentricity0.0806
Inclination12.3°
Closest distance between its orbit and Earth's (MOID)2.25 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

Also named after someone called Lawrence

All asteroids named after someone called Lawrence

Also discovered on 8 September 1999

More named asteroids discovered by CSS

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← (19691) Iwate · (19695) Billnye →