| 释义 |
- Discovery
- Orbit and classification
- Physical characteristics
- Naming
- References
- External links
{{DISPLAYTITLE:{{mp|(434326) 2004 JG|6}}}}{{Infobox planet
| minorplanet = yes
| name = (434326) {{mp|2004 JG|6}}
| background = #FFC2E0
| image =
| image_size =
| caption =
| discovery_ref =
| discovered = 11 May 2004
| discoverer = LONEOS
| discovery_site = Anderson Mesa Stn.
| mpc_name = {{mp|(434326) 2004 JG|6}}
| alt_names = {{mp|2004 JG|6}}
| pronounced =
| named_after =
| mp_category = {{nowrap|Atira{{·}}NEO{{·}}PHA
Mercury-crosser
Venus-crosser
| orbit_ref =
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 1
| observation_arc = 11.05 yr (4,035 days)
| aphelion = 0.9726 AU
| perihelion = 0.2978 AU
| semimajor = 0.6352 AU
| eccentricity = 0.5312
| period = 0.51 yr (185 days)
| mean_anomaly = 315.54°
| mean_motion = {{Deg2DMS|1.9468|sup=ms}} / day
| inclination = 18.945°
| asc_node = 37.032°
| arg_peri = 352.99°
| moid = 0.0381 AU{{·}}14.8 LD
| mean_diameter = 0.6–1.4 km[6]
| rotation =
| albedo =
| spectral_type =
| abs_magnitude = 18.4
}}{{mp|(434326) 2004 JG|6}}, provisional designation {{mp|2004 JG|6}} is an eccentric, sub-kilometer sized asteroid, classified as near-Earth object and potentially hazardous asteroid of the Atira group, which is also known as "Apohele" and "interior-Earth objects". It is one of the closest orbiting objects to the Sun.[6][9] Discovery {{mp|2004 JG|6}} was discovered on 11 May 2004, by leading astronomer Brian Skiff[9] of the Lowell Observatory Near-Earth Object Search (LONEOS) at Anderson Mesa Station near Flagstaff, Arizona, United States.[2]The body's observation arc begins with its official discovery observation at Anderson Mesa, as no precoveries were taken and no prior identifications were made.[2] Orbit and classification It orbits the Sun at a distance of 0.3–1.0 AU once every 6 months (185 days). Its orbit has an eccentricity of 0.53 and an inclination of 19° with respect to the ecliptic. {{mp|2004 JG|6}} is the second known Atira asteroid – the first being the group's namesake 163693 Atira – which means its entire orbit lies within that of the Earth.[9] Its orbital period is less than that of Venus, making it one of the closest known objects to the Sun, after Mercury. Due to its eccentric orbit, it crosses the orbits of both Mercury and Venus, which also makes it a Mercury- and Venus-crosser. Physical characteristics Based on a generic conversion from absolute magnitude, the asteroid measures between 0.6 and 1.4 kilometers in diameter.[6] Naming As of 2017, this minor planet remains unnamed.[2] References 1. ^1 2 3 4 5 {{cite web |title = 434326 (2004 JG6) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=434326 |accessdate = 25 April 2017}}
2. ^1 2 3 {{cite web |title = 434326 (2004 JG6) |work = NEODyS-2, Near Earth Objects – Dynamic Site |url = http://newton.dm.unipi.it/neodys2/index.php?pc=1.1.9&n=2004JG6 |accessdate = 25 April 2017}}
3. ^1 2 3 {{cite web |title = LONEOS Discovers Asteroid with the Smallest Orbit |work = Space Daily |date = 12 July 2004 |url = http://www.spacedaily.com/news/asteroid-04g.html |accessdate = 25 April 2017}}
[1][2][3]}} External links - Asteroid Lightcurve Database (LCDB), query form (info)
- [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (430001)-(435000) – Minor Planet Center
- {{JPL small body|id=434326}}
{{Minor planets navigator|number=434326|PageName={{mp|(434326) 2004 JG|6}}}}{{Small Solar System bodies}}{{DEFAULTSORT:434326}} 4 : Apohele asteroids|Discoveries by LONEOS|Potentially hazardous asteroids|Astronomical objects discovered in 2004 |