astro.wikisort.org - Asteroid

2937 Gibbs, provisional designation 1980 LA, is a stony Phocaea asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 14 June 1980, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona.[3] The asteroid was named after American scientist Josiah Willard Gibbs.[2]

2937 Gibbs

Discovery [1]
Discovered by	E. Bowell
Discovery site	Anderson Mesa Stn.
Discovery date	14 June 1980
Designations
MPC designation	(2937) Gibbs
Named after	Josiah Willard Gibbs [2] (American scientist)
Alternative designations	1980 LA
Minor planet category	Mars-crosser [1][3] · Phocaea [4][5]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	36.75 yr (13,424 days)
Aphelion	3.0232 AU
Perihelion	1.6160 AU
Semi-major axis	2.3196 AU
Eccentricity	0.3033
Orbital period (sidereal)	3.53 yr (1,290 days)
Mean anomaly	161.70°
Mean motion	0° 16m 44.4s / day
Inclination	21.758°
Longitude of ascending node	265.72°
Argument of perihelion	71.849°
Physical characteristics
Dimensions	5.04±1.43 km[6] 5.99±1.20 km[7] 6.35 km (calculated)[4]
Synodic rotation period	3.06±0.05 h[8] 3.06153±0.00006 h[8] 3.189±0.003 h[9][lower-alpha 1]
Geometric albedo	0.23 (assumed)[4] 0.283±0.113[7] 0.30±0.13[6]
Spectral type	S [4]
Absolute magnitude (H)	13.10[7] · 13.2[1][4] · 13.42[6]

Orbit and classification

Gibbs is a Mars-crossing asteroid, as it crosses the orbit of Mars at 1.666 AU.[1][3] It is also an eccentric member of the Phocaea family,[4][5] a large asteroid family of stony asteroids in the inner main-belt.[10]^: 23 Gibbs orbits the Sun at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,290 days). Its orbit has an eccentricity of 0.30 and an inclination of 22° with respect to the ecliptic.[1]

The asteroid's observation arc begins with its official discovery observation at Anderson Mesa. No prior identifications were made and no precoveries taken.[3]

Physical characteristics

Gibbs is an assumed stony S-type asteroid, which agrees with the overall spectral type of the Phocaea family.[10]^: 23

Rotation period

In 2005, two rotational lightcurves of Gibbs were obtained from photometric observations by Italian amateur astronomers Federico Manzini and Roberto Crippa. Lightcurve analysis gave a rotation period of 3.06 and 3.06153 hours with a brightness variation of 0.31 and 0.39 magnitude, respectively (U=2/3-).[8] In December 2016, Robert Stephens obtained a well-defined lightcurve at his Trojan Station (U81) that gave a period of 3.189 hours and an amplitude of 0.26 magnitude (U=3).[9][lower-alpha 1]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Gibbs measures between 5.04 and 5.99 kilometers in diameter and its surface has an albedo between 0.283 and 0.30,[6][7] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.23 – derived from 25 Phocaea, the Phocaea family's largest member and namesake – and calculates a diameter of 6.35 kilometers based on an absolute magnitude of 13.2.[4]

Naming

This minor planet was named in memory of American mathematician and physicist Josiah Willard Gibbs (1839–1903), who contributed to the studies of asteroids through his work on orbits.[2] The official naming citation was published by the Minor Planet Center on 17 February 1984 (M.P.C. 8544).[11] The lunar crater Gibbs was also named in his honor.[2]

Notes

References

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 Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2937 Gibbs at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2937 Gibbs at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (2937) Gibbs

(2937) Gibbs (1980 LA) ist ein ungefähr fünf Kilometer großer Asteroid des inneren Hauptgürtels, der am 14. Juni 1980 vom US-amerikanischen Astronomen Edward L. G. Bowell am Lowell-Observatorium, Anderson Mesa Station (Anderson Mesa) in der Nähe von Flagstaff, Arizona (IAU-Code 688) entdeckt wurde.

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- [en] 2937 Gibbs

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[ru] (2937) Гиббс

(2937) Гиббс (лат. Gibbs) — небольшой астероид, который относится к группе астероидов пересекающих орбиту Марса. Он был открыт 14 июня 1980 года американским астрономом Эдвардом Боуэллом в обсерватории Андерсон Меса и назван в честь известного американского учёного Джозайя Гиббса[1].

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