18610 Arthurdent

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18610 Arthurdent
Discovery[1] and designation
Discovered byFelix Hormuth
Discovery dateFebruary 7, 1998
Designations
Alternative names 
Minor planet categoryMain belt
Orbital characteristics[2]
Epoch May 19, 2011 (JD 2455700.5)
Aphelion462.727 Gm (3.093 AU)
Perihelion299.534 Gm (2.002 AU)
Semi-major axis381.130 Gm (2.548 AU)
Eccentricity0.214
Orbital period1485.321 d (4.07 a)
Average orbital speed18.44 km/s
Mean anomaly123.905°
Inclination5.586°
Longitude of ascending node319.522°
Physical characteristics
Dimensions? km
Mass?×10? kg
Mean density? g/cm³
Equatorial surface gravity? m/s²
Equatorial escape velocity? km/s
Sidereal rotation period? d
Axial tilt
Pole ecliptic latitude?
Pole ecliptic longitude?
Geometric albedo0.10
Temperature~174 K
Spectral type?
Absolute magnitude (H)14.4
 
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18610 Arthurdent
Discovery[1] and designation
Discovered byFelix Hormuth
Discovery dateFebruary 7, 1998
Designations
Alternative names 
Minor planet categoryMain belt
Orbital characteristics[2]
Epoch May 19, 2011 (JD 2455700.5)
Aphelion462.727 Gm (3.093 AU)
Perihelion299.534 Gm (2.002 AU)
Semi-major axis381.130 Gm (2.548 AU)
Eccentricity0.214
Orbital period1485.321 d (4.07 a)
Average orbital speed18.44 km/s
Mean anomaly123.905°
Inclination5.586°
Longitude of ascending node319.522°
Physical characteristics
Dimensions? km
Mass?×10? kg
Mean density? g/cm³
Equatorial surface gravity? m/s²
Equatorial escape velocity? km/s
Sidereal rotation period? d
Axial tilt
Pole ecliptic latitude?
Pole ecliptic longitude?
Geometric albedo0.10
Temperature~174 K
Spectral type?
Absolute magnitude (H)14.4

18610 Arthurdent is a small main belt asteroid, discovered by Felix Hormuth of Starkenburg Observatory on February 7, 1998.[1][2] It is named after Arthur Dent, the bewildered hero of Douglas Adams's radio play and book The Hitchhiker's Guide to the Galaxy.[3]

The naming of this asteroid was announced by the Minor Planet Center in Minor Planet Circular MPC 42677 on May 9, 2001.[4] Two days later, on May 11, 2001, Adams died of a heart attack in Santa Barbara, California.[5] The near coincidence of these events led to some media reports of the asteroid naming appearing after Adams's death was reported, and to assumptions that the two events occurred on the same day, even by those connected to the naming.

You may have heard the sad news that Douglas Adams passed away last Friday. By accident on the same day the naming of minor planet (18610) Arthurdent was announced by the Minor Planet Center. We wanted to make Mr. Adams a joy, but did never dare to think that he wouldn't be able to receive this surprise, when we sent our name proposal to the MPC a few months back.

—Reiner M. Stoss, Starkenburg Observatory, Cambridge Conference Correspondence for 14 May 2001[6]

The naming citation reads:

(18610) Arthurdent = 1998 CC2

Discovered 1998 Feb. 7 at Starkenburg Observatory.
The earthling Arthur Dent is confronted with the adversities of life, the universe and everything in a highly amusing and entertaining way in Douglas Adam's [sic] famous five-volume trilogy The Hitch Hiker's Guide to the Galaxy.[4]

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