| 词条 | 475 Ocllo |
| 释义 |
| minorplanet=yes | background=#FA8072 | name=475 Ocllo | discovery_ref= | discoverer=D. Stewart | discovered=14 August 1901 | mpc_name=(475) Ocllo | alt_names=1901 HN; 1959 JS; 1979 DD | mp_category=Mars-crosser | orbit_ref=[1][2] | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|2.59436|AU|Gm|abbr=on}} | perihelion={{Convert|1.60661|AU|Gm|abbr=on}} | aphelion={{Convert|3.5821|AU|Gm|abbr=on|lk=on}} | eccentricity=0.38073 | period=4.18 yr (1526.3 d) | inclination=18.926° | asc_node=34.496° | mean_anomaly=174.037° | dimensions=11–25 km[3] | mass=3.1{{e|16}}? kg | density=2.0? g/cm³ | spectral_type=X[2] | rotation={{Convert|7.3151|h|d|abbr=on|lk=on}}[2][6] | abs_magnitude=11.88[2] | albedo= | arg_peri=305.68° | mean_motion={{Deg2DMS|0.23586|sup=ms}} / day | observation_arc=97.47 yr (35601 d) | uncertainty=0 | moid={{Convert|0.670978|AU|Gm|abbr=on}} }}Ocllo (minor planet designation: 475 Ocllo) is a large Mars-crossing asteroid.[2] It was discovered by American astronomer DeLisle Stewart on August 14, 1901, and assigned a provisional name of 1901 HN.[10]Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a period of 7.3151 ± 0.0002 hours and a brightness variation of 0.66 ± 0.04 in magnitude.[6] References1. ^{{Cite web |url=ftp://ftp.lowell.edu/pub/elgb/astorb.html |website=astorb |title=The Asteroid Orbital Elements Database |publisher=Lowell Observatory}} [2][3][4][5]2. ^1 {{cite journal | last1=Kreutz | first1=H. | title=Planet (475) Ocllo | journal=Astronomische Nachrichten | volume=167 | issue=21 | date=1904 | pages=349–350 | issn=0004-6337 | doi=10.1002/asna.19041672106}} 3. ^1 2 {{Citation | last1 = Pilcher | first1 = Frederick | title = Rotation Period Determinations for 25 Phocaea, 140 Siwa, 149 Medusa 186 Celuta, 475 Ocllo, 574 Reginhild, and 603 Timandra | work = The Minor Planet Bulletin | volume = 38 | issue = 2 | pages = 76–78 |date=April 2011 | bibcode = 2011MPBu...38...76P | postscript= .}} 4. ^1 2 3 4 5 {{cite web |title=JPL Small-Body Database Browser: 475 Ocllo (1901 HN) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=475 |publisher=Jet Propulsion Laboratory |access-date=9 May 2016}} 5. ^1 {{cite web |title=Absolute Magnitude (H) |publisher=NASA/JPL |url=http://neo.jpl.nasa.gov/glossary/h.html |accessdate=2015-06-14}} }} External links
6 : Mars-crossing asteroids|Discoveries by DeLisle Stewart|Minor planets named for people|Named minor planets|X-type asteroids (Tholen)|Astronomical objects discovered in 1901 |
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