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546 Herodias

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Carbonaceous asteroid

546 Herodias
Discovery^[1]
Discovered by	P. Götz
Discovery site	Heidelberg Obs.
Discovery date	10 October 1904
Designations
MPC designation	(546) Herodias
Pronunciation	/hɪˈroʊdiəs/^[2]
Named after	Herodias
Alternative designations	1904 PA
Minor planet category	main-belt · (middle) Eunomian interloper
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	111.48 yr (40719 d)
Aphelion	2.89852 AU (433.612 Gm)
Perihelion	2.29588 AU (343.459 Gm)
Semi-major axis	2.59720 AU (388.536 Gm)
Eccentricity	0.116018
Orbital period (sidereal)	4.19yr (1528.8d)
Mean anomaly	149.511°
Mean motion	0° 14^m 7.714^s / day
Inclination	14.8547°
Longitude of ascending node	21.7900°
Argument of perihelion	108.626°
Physical characteristics
Dimensions	66.02±3.8 km(mean)^[3]
Mean radius	33.01±1.9km
Synodic rotation period	10.4 hours^[4] 10.77 h (0.449 d)^[1]
Geometric albedo	0.0534 ± 0.007^[3]
Spectral type	C
Absolute magnitude (H)	9.70^[5]

546 Herodias is acarbonaceous asteroid from the central regions of theasteroid belt, approximately 66 kilometers in diameter. It is an identifiedEunomian interloper. It was named after the biblical characterHerodias.

^^a ^b ^c"546 Herodias (1904 PA)".JPL Small-Body Database.NASA/Jet Propulsion Laboratory. Archived fromthe original on 17 September 2020. Retrieved7 May 2016.
^"Herodias".Dictionary.com Unabridged (Online). n.d.
^^a ^bTedesco; et al. (2004)."Supplemental IRAS Minor Planet Survey (SIMPS)".IRAS-A-FPA-3-RDR-IMPS-V6.0.Planetary Data System. Archived fromthe original on 19 January 2007. Retrieved7 January 2009.
^Székely; Kiss, L; Szabo, G; Sarneczky, K; Csak, B; Varadi, M; Meszaros, S; et al. (2005). "CCD photometry of 23 minor planets".Planetary and Space Science.53 (9):925–936.arXiv:astro-ph/0504462.Bibcode:2005P&SS...53..925S.doi:10.1016/j.pss.2005.04.006.
^Tholen (2007)."Asteroid Absolute Magnitudes".EAR-A-5-DDR-ASTERMAG-V11.0.Planetary Data System. Archived fromthe original on 11 June 2008. Retrieved7 January 2009.

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Designation Groups List Moon Meanings of names
Asteroid	Active Aten asteroid Asteroid belt Family Jupiter trojan Near-Earth Spectral types
Distant minor planet	Centaur Neptune trojan Damocloid Trans-Neptunian object Detached Kuiper belt Oort cloud Scattered disc

Other

Authority control databases	JPL SBDB MPC

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