1374 Isora

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 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 80.47 yr (29390 days)
Aphelion 2.8777 AU (430.50 Gm)
Perihelion 1.6230 AU (242.80 Gm)
2.2504 AU (336.66 Gm)
Eccentricity 0.27878
3.38 yr (1233.0 d)
346.59°
 17m 31.056s / day
Inclination 5.2943°
302.57°
60.994°
Earth MOID 0.627558 AU (93.8813 Gm)
Jupiter MOID 2.60115 AU (389.127 Gm)
Jupiter Tisserand parameter 3.570
Physical characteristics
Dimensions 5.48 km (derived)[3]
36.699 h (1.5291 d)[1][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

    1. 1 2 3 "JPL Small-Body Database Browser: 1374 Isora (1935 UA)" (2015-09-23 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1374) Isora. Springer Berlin Heidelberg. p. 111. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1374) Isora". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 Stephens, Robert D. (July 2014). "Asteroids Observed from CS3: 2014 January - March". The Minor Planet Bulletin 41 (3): 171–175. Bibcode:2014MPBu...41..171S. ISSN 1052-8091. Retrieved November 2015.
    5. 1 2 Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved November 2015.
    6. "1374 Isora (1935 UA)". Minor Planet Center. Retrieved November 2015.

    External links


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