| 词条 | 2004 HR56 |
| 释义 |
| minorplanet = yes | name = {{mp|2004 HR|56}} | background = #FFC2E0 | image = Asteroid 2004HR56.gif | image_size = 250 | caption = Orbital diagram of asteroid {{mp|2004 HR|56}} as of 25 Apr. 2004 | discovery_ref = | discoverer = Spacewatch | discovery_site = {{nowrap|Kitt Peak National Obs.}} | discovered = 25 April 2004 | mpc_name = {{mp|2004 HR|56}} | alt_names = | pronounced = | named_after = | mp_category = Apollo{{·}}NEO | orbit_ref = | epoch = 26 April 2004 (JD 2453121.5) | uncertainty = 9 | observation_arc = (3 days) | aphelion = 2.2331 AU | perihelion = 0.8772 AU | semimajor = 1.5552 AU | eccentricity = 0.4359 | period = 1.94 yr (708 days) | mean_anomaly = 41.043° | mean_motion = {{Deg2DMS|0.5082|sup=ms}} / day | inclination = 5.9726° | asc_node = 41.102° | arg_peri = 87.895° | moid = 0.0601 AU{{·}}23.4 LD | mean_diameter = [4] | rotation = | albedo = | spectral_type = | abs_magnitude = 23.3 }}{{mp|2004 HR|56}}, is a micro-asteroid, classified as near-Earth object belonging to the Apollo group. It was first observed by Spacewatch at Kitt Peak National Observatory on 25 April 2004.[6] Descritpion{{mp|2004 HR|56}} and was visible between 25 April 25 to 10 May 2005. This find was documented as part of the FMO Project and was reported by six different observatories. Reports indicate that the object is about 74 meters wide and has an absolute magnitude of 23.28. The object could also be classified as a meteoroid, although the most common definition uses a diameter of 10 m as the demarcation.It orbits the Sun at a distance of 0.9–2.2 AU once every 23 months (708 days). Its orbit has an eccentricity of 0.44 and an inclination of 6° with respect to the ecliptic. References1. ^1 {{cite web |title = 2004 HR56 |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2004+HR56 |accessdate = 25 January 2018}} [1][2]2. ^1 {{cite web |title = Asteroid Size Estimator |publisher = CNEOS NASA/JPL |url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html |accessdate = 25 January 2018}} }} External links
3 : Apollo asteroids|Minor planet object articles (unnumbered)|Astronomical objects discovered in 2004 |
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