143 Adria

143 Adria
Discovery
Discovered by	Johann Palisa
Discovery date	23 February 1875
Designations
Named after	Adriatic Sea
Minor planet category	Main belt
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	135.97 yr (49663 d)
Aphelion	2.9654 AU (443.62 Gm)
Perihelion	2.55537 AU (382.278 Gm)
Semi-major axis	2.76036 AU (412.944 Gm)
Eccentricity	0.074263
Orbital period (sidereal)	4.59 yr (1675.1 d)
Average orbital speed	17.90 km/s
Mean anomaly	225.257°
Mean motion	0° 12m 53.672s / day
Inclination	11.449°
Longitude of ascending node	333.069°
Argument of perihelion	253.346°
Earth MOID	1.57603 AU (235.771 Gm)
Jupiter MOID	2.10833 AU (315.402 Gm)
TJupiter	3.309
Physical characteristics
Dimensions	89.93±1.9 km
Mass	7.6×1017 kg
Mean density	2.0 g/cm³
Equatorial surface gravity	0.0251 m/s²
Equatorial escape velocity	0.0475 km/s
Synodic rotation period	22.005 h (0.9169 d)
Geometric albedo	0.0491±0.002
Temperature	~167 K
Spectral type	C
Absolute magnitude (H)	9.12

143 Adria is a fairly large main-belt asteroid that was discovered by Austrian astronomer J. Palisa on February 23, 1875, at Pula, and named after the Adriatic Sea, on the coast of which the discovery was made. This dark-coloured asteroid has probably a primitive carbonaceous chondritic composition.

One occultation by Adria has been reported so far, from Japan on August 21, 2000. A somewhat spherical shape measuring 98 × 86 km was observed.

Photometric observations of this asteroid made during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave an irregular light curve with a period of 22.005 ± 0.001 hours and a brightness variation of 0.08 ± 0.01 in magnitude.^[3]

References

^ [1]
^ ^a ^b Yeomans, Donald K., "143 Adria", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
^ ^a ^b Pilcher, Frederick (September 2008), "Period Determinations for 26 Proserpina, 34 Circe 74 Galatea, 143 Adria, 272 Antonia, 419 Aurelia, and 557 Violetta", The Minor Planet Bulletin, vol. 35, no. 3, pp. 135–138, Bibcode:2008MPBu...35..135P.

External links

ftp://ftp.lowell.edu/pub/elgb/astorb.html
143 Adria at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

[1] [1]

[JPL-2] Yeomans, Donald K., "143 Adria", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.

[Pilcher2008-3] Pilcher, Frederick (September 2008), "Period Determinations for 26 Proserpina, 34 Circe 74 Galatea, 143 Adria, 272 Antonia, 419 Aurelia, and 557 Violetta", The Minor Planet Bulletin, vol. 35, no. 3, pp. 135–138, Bibcode:2008MPBu...35..135P.

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