| 词条 | (385185) 1993 RO |
| 释义 |
| minorplanet = yes | background = #C2E0FF | name = (385185) 1993 RO | discoverer = David C. Jewitt Jane Luu | discovered = 14 September 1993 | mpc_name = | alt_names = 1993 RO | mp_category = Plutino (TNO) | orbit_ref = [1] | epoch = 13 January 2016 (JD 2457400.5) | semimajor = {{Convert|39.134|AU|Tm|abbr=on}} | perihelion = {{Convert|31.492|AU|Tm|abbr=on}} | aphelion = {{Convert|46.776|AU|Tm|abbr=on|lk=on}} | eccentricity = 0.19528 | period = 244.81 yr (89418.1 d) | inclination = 3.7196° | asc_node = 170.4038° | arg_peri = 188.41° | mean_anomaly = 26.984° | avg_speed = | dimensions = ~92 km[2] | mass = | density = | surface_grav = | escape_velocity= | sidereal_day = | spectral_type= | abs_magnitude= 8.4 | albedo = 0.09 (assumed) | single_temperature= | mean_motion = 0.0040260°/day | observation_arc= 6997 days (19.16 yr) | earliest_precovery_date= 10 August 1994 | uncertainty = 4 | moid = {{Convert|30.4867|AU|Tm|abbr=on}} | jupiter_moid = {{Convert|26.5264|AU|Tm|abbr=on}} }}(385185) 1993 RO is a plutino. It was the first plutino discovered after Pluto itself, with 1993 RP and (15788) 1993 SB a day and two days later, respectively. The discovery was made in 1993 at the Mauna Kea Observatory with a 2.2-meter telescope. Very little is known about (385185) 1993 RO. Even the diameter estimate of ~90 km is based on the assumed albedo of 0.09.[2] See also{{Portal|Astronomy}}
References1. ^{{cite web |date = 2009-11-06 |title = JPL Small-Body Database Browser: 385185 (1993 RO) |url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1993RO |accessdate = 2014-03-18}} 2. ^1 {{cite web|url=http://www.johnstonsarchive.net/astro/tnoslist.html |title=List of known trans-Neptunian objects |publisher=Johnstonsarchive.net |date= |accessdate=2013-10-29}} External links
4 : Plutinos|Discoveries by David C. Jewitt|Discoveries by Jane Luu|Astronomical objects discovered in 1993 |
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