| 词条 | 445 Edna |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=445 Edna | discoverer=E. F. Coddington | discovered=2 October 1899 | mpc_name=(445) Edna | alt_names=1899 EX | mp_category=Main belt | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|3.20060|AU|Gm|abbr=on}} | perihelion={{Convert|2.57569|AU|Gm|abbr=on}} | aphelion={{Convert|3.82552|AU|Gm|abbr=on|lk=on}} | eccentricity=0.19525 | period=5.73 yr (2091.4 d) | inclination=21.2944° | asc_node=292.111° | arg_peri=81.2763° | mean_anomaly=190.102° | dimensions={{val|87.17|2.1|ul=km}}[1] 88.60 ± 4.10 km | mass={{nowrap|(3.47 ± 0.78) × 1018 kg}} | density=9.52 ± 2.50 g/cm3 | rotation={{Convert|19.97|h|d|abbr=on|lk=on}} | spectral_type= | abs_magnitude=9.29 | albedo={{val|0.0447|0.002}} | mean_motion={{Deg2DMS|0.172130|sup=ms}} / day | orbit_ref=[1] | observation_arc=116.53 yr (42563 d) | uncertainty=0 }} Edna (minor planet designation: 445 Edna) is a large Main belt asteroid. It was discovered by E. F. Coddington on October 2, 1899, at Mount Hamilton, California. It was the astronomers third and final asteroid discovery. As of 2018 it is known to be close to the constellation Aquiline. References1. ^1 {{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=445;cad=1 |title=445 Edna (1899 EX) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=10 May 2016}} See Table 1.}} External links
6 : Background asteroids|Discoveries by Edwin Coddington|Minor planets named for people|Named minor planets|C-type asteroids (Tholen)|Astronomical objects discovered in 1899 |
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