1374 Isora

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1374 Isora
Discovery [1]
Discovered by E. Delporte
Discovery site Uccle – Belgium
Discovery date 21 October 1935
Designations
MPC designation 1374 Isora
Named after
(unknown)[2]
1935 UA
Mars-crosser[3]
Orbital characteristics[1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 79.92 yr (29,192 days)
Aphelion 2.8770 AU
Perihelion 1.6229 AU
2.2500 AU
Eccentricity 0.2786
3.38 yr (1,233 days)
229.74°
Inclination 5.2945°
302.56°
61.021°
Earth MOID 0.6286 AU
Physical characteristics
Dimensions 5.48 km (derived)[3]
36.699 h[4]
8±2 h[5]
0.20 (assumed)[3]
SMASS = Sq
S[3]
13.2

1374 Isora, provisional designation 1935 UA, is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, about 5 kilometers in diameter. It was discovered by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle, on 21 October 1935.[6]

The S-type asteroid, classified as a Sq-subtype in the SMASS taxonomy, orbits the Sun at a distance of 1.6–2.9 AU once every 3 years and 5 months (1,233 days). Its orbit shows a high eccentricity of 0.28 and is tilted by 5 degrees to the plane of the ecliptic. In 2014, CCD photometric observations of its light-curve resulted in a rather long rotation period of 36.7 hours,[4] superseding an older observation from the 1990s, which found a period of only 8±2 hours.[5] The Collaborative Asteroid Lightcurve Link (CALL) assumes a geometric albedo of 0.20, typical for a stony asteroid.[3]

The asteroid's named was proposed by Gustav Stracke, (1887–1943), astronomer at the German Astronomisches Rechen-Institut, and after whom the minor planet 1019 Strackea is named. It is not known whether or not the name refers to any person, location or occurrence.[2]

References

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External links


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