1131 Porzia

1131 Porzia
Discovery[1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date 10 September 1929
Designations
MPC designation 1131 Porzia
Named after
Porcia
(in Shakespeare's play)
Julius Caesar[2]
1929 RO · 1939 TJ
1962 MB
Mars-crosser[1][3]
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 85.92 yr (31384 days)
Aphelion 2.8672 AU (428.93 Gm)
Perihelion 1.5888 AU (237.68 Gm)
2.2280 AU (333.30 Gm)
Eccentricity 0.28688
3.33 yr (1214.7 d)
46.636°
 17m 46.932s / day
Inclination 3.2293°
100.72°
248.02°
Earth MOID 0.585127 AU (87.5338 Gm)
Jupiter MOID 2.55508 AU (382.235 Gm)
Jupiter Tisserand parameter 3.587
Physical characteristics
Dimensions 7.13 km (calculated)[3]
4.6584 h (0.19410 d)[1][4]
4.0±0.2 h[5]
4.6601±0.0006 h[6]
0.20 (assumed)[3]
SMASS = S
S[3]
12.9

    1131 Porzia, provisional designation 1929 RO, is an eccentric, stony asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt, about 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg Observatory on 10 September 1929.[7]

    The S-type asteroid orbits the Sun at a distance of 1.6–2.9 AU once every 3 years and 4 months (1,215 days). Its orbit shows a high eccentricity of 0.29 and is tilted by 3 degrees to the plane of the ecliptic. It has a rotation period of 4.7 hours.[4][6] The Collaborative Asteroid Lightcurve Link (CALL) assumed an geometric albedo of about 0.20, a common value for stony asteroids with a S-type spectral class.[3]

    It was named after the wife of Brutus, Porcia, who kills herself at news of her husbands death in Shakespeare's play Julius Caesar.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1131 Porzia (1929 RO)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 1 May 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1131) Porzia. Springer Berlin Heidelberg. p. 96. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1131) Porzia". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 Benishek, Vladimir; Protitch-Benishek, Vojislava (April 2010). "Period Determination for 1131 Porzia and 1819 Laputa". The Minor Planet Bulletin 37 (2): 64–65. Bibcode:2010MPBu...37...64B. ISSN 1052-8091. Retrieved November 2015.
    5. 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. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1131) Porzia". Geneva Observatory. Retrieved November 2015.
    7. "1131 Porzia (1929 RO)". Minor Planet Center. Retrieved November 2015.

    External links


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