1924 Horus

1924 Horus
Discovery
Discovered by	Palomar–Leiden survey; C. J. van Houten, I. van Houten-Groeneveld and Tom Gehrels
Discovery site	Palomar Obs., Leiden Obs
Discovery date	24 September 1960
Designations
MPC designation	1924 Horus
Named after	Horus
Alternative designations	4023 P–L · 1951 BD; 1969 BA
Minor planet category	main-belt
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 0
Observation arc	55.45 yr (20253 days)
Aphelion	2.6475 AU (396.06 Gm)
Perihelion	2.0324 AU (304.04 Gm)
Semi-major axis	2.3399 AU (350.04 Gm)
Eccentricity	0.13143
Orbital period (sidereal)	3.58 yr (1307.4 d)
Mean anomaly	38.259°
Mean motion	0° 16m 31.296s / day
Inclination	2.7298°
Longitude of ascending node	350.27°
Argument of perihelion	152.45°
Earth MOID	1.04544 AU (156.396 Gm)
Jupiter MOID	2.36671 AU (354.055 Gm)
TJupiter	3.552
Physical characteristics
Dimensions	12.3 km
Mean radius	6.14 ± 0.35 km
Synodic rotation period	6.183 h (0.2576 d)
Geometric albedo	0.0888 ± 0.011
Absolute magnitude (H)	13.5

1924 Horus, also designated 4023 P–L, is a main-belt asteroid discovered on September 24, 1960, by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden, on photographic plates taken by Tom Gehrels at Palomar. On the same date, the trio of astronomers also discovered 1912 Anubis, 1923 Osiris and 5011 Ptah.^[3]

Horus measures about 12 kilometers in diameter.^[1]

The designation P–L stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden Observatory. The trio are credited with several thousand asteroid discoveries.

It is named after Horus, the falcon-headed king of the sky and the stars, and son of the Egyptian god Osiris.^[2]

References

^ ^a ^b ^c "JPL Small-Body Database Browser: 1924 Horus (4023 P-L)" (2015-03-28 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.
^ ^a ^b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1924) Horus. Springer Berlin Heidelberg. p. 154. ISBN 978-3-540-29925-7. Retrieved 23 August 2016.
^ "New Names of Minor Planets" (PDF), Minor Planet Circular, no. MPC 5013, Cambridge, Mass: Minor Planet Center, 1 Nov 1979, ISSN 0736-6884

External links

"1924 Horus (4023 P-L)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2001924.
1924 Horus at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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

[jpldata-1] "JPL Small-Body Database Browser: 1924 Horus (4023 P-L)" (2015-03-28 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.

[springer-2] Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1924) Horus. Springer Berlin Heidelberg. p. 154. ISBN 978-3-540-29925-7. Retrieved 23 August 2016.

[MPC5013-3] "New Names of Minor Planets" (PDF), Minor Planet Circular, no. MPC 5013, Cambridge, Mass: Minor Planet Center, 1 Nov 1979, ISSN 0736-6884

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