astro.wikisort.org - Asteroid

1301 Yvonne (prov. designation: 1934 EA) is a carbonaceous background asteroid from the background population of the intermediate asteroid belt, approximately 21 kilometers (13 miles) in diameter. It was discovered on 7 March 1934, by French astronomer Louis Boyer at the Algiers Observatory in North Africa.[17] The asteroid was named for the discoverer's sister, Yvonne Boyer

1301 Yvonne

Modelled shape of Yvonne from its lightcurve
Discovery[1]
Discovered by	L. Boyer
Discovery site	Algiers Obs.
Discovery date	7 March 1934
Designations
MPC designation	(1301) Yvonne
Named after	Yvonne Boyer[2] (discoverer's sister)
Alternative designations	1934 EA
Minor planet category	main-belt · (outer)[3] background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	83.32 yr (30,433 days)
Aphelion	3.5134 AU
Perihelion	2.0225 AU
Semi-major axis	2.7680 AU
Eccentricity	0.2693
Orbital period (sidereal)	4.61 yr (1,682 days)
Mean anomaly	96.456°
Mean motion	0° 12m 50.4s / day
Inclination	34.030°
Longitude of ascending node	161.56°
Argument of perihelion	302.27°
Physical characteristics
Mean diameter	18.693±4.943 km[5] 20.44±5.24 km[6] 21.438±0.088 km[7] 21.54±0.25 km[8] 21.681±0.204 km[9] 21.95±0.41 km[10] 22.77±2.4 km[11]
Synodic rotation period	7.2536±0.0002 h[12] 7.3196±0.0001 h[12] 7.3200±0.0001 h[13] 7.320±0.005 h[14]
Pole ecliptic latitude	(39.0°, 41.0°) (λ1/β1)[15]
Geometric albedo	0.10±0.12[6] 0.111±0.020[10] 0.1167±0.0700[5] 0.1632±0.040[11] 0.1806±0.0479[9] 0.201±0.006[8]
Spectral type	SMASS = C[1][3] · C[16]
Absolute magnitude (H)	10.80[8][9][11] · 11.30[1][3][5][10] · 11.32[6] · 11.40±0.22[16]

Orbit and classification

Yvonne is a non-family of the main belt's background population.[4] It orbits the Sun in the central asteroid belt at a distance of 2.0–3.5 AU once every 4 years and 7 months (1,682 days; semi-major axis of 2.77 AU). Its orbit has an eccentricity of 0.27 and an inclination of 34° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Algiers in March 1934.[17]

Naming

This minor planet was named after Yvonne Boyer, sister of discoverer. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 101).[2]

Physical characteristics

In the SMASS classification, Yvonne is a carbonaceous C-type asteroid.[1] PanSTARRS photometric survey also characterized the asteroid as a C-type.[16]

Rotation period and pole

Between 2003 and 2017, four rotational lightcurves of Yvonne have been obtained from photometric observations.[12][13][14] Analysis gave a consolidated rotation period of 7.320 hours with a brightness amplitude between 0.52 and 0.90 magnitude (U=3/3/3/3).[3] In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue (UAPC) and other sources gave a concurring period 7.31968±0.00005 hours, as well as a spin axis of (39.0°, 41.0°) in ecliptic coordinates (λ, β).[15]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Yvonne measures between 18.693 and 22.77 kilometers in diameter and its surface has an albedo between 0.10 and 0.201.[5][6][7][8][9][10][11]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1054 (which is untypically high for a carbonaceous body) and a diameter of 22.50 kilometers based on an absolute magnitude of 11.3.[3]

References

External links

• Lightcurve Database Query (LCDB), at www.minorplanet.info
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 1301 Yvonne at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1301 Yvonne at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (1301) Yvonne

(1301) Yvonne ist ein Asteroid des Hauptgürtels, der am 7. März 1934 vom französischen Astronomen Louis Boyer in Algier entdeckt wurde.

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- [en] 1301 Yvonne

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[ru] (1301) Ивонна

(1301) Ивонна  — астероид главного пояса, открытый в 1934 году французским астрономом Луи Буайе.

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