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| {{Infobox planet
| | Petroleum Engineer Odis from Lively, has hobbies and interests for example bmx, [http://forum.copy9.com/member.php?u=36038-Barb23Tkmiokow Largest property Developers in singapore] developers in singapore and writing. Plans to quit work and take the family to numerous noteworthy heritage listed locales on the planet like Central Sikhote-Alin. |
| |width=22em
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| |name=(66063) 1998 RO<sub>1</sub>
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| |bgcolour=#FFFFC0
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| |image=[[File:Orbit of (66063) 1998 RO1.gif|thumb|center|300 px|Orbit of (66063) 1998 RO<sub>1</sub>]]
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| |discovery_ref=<ref name="JPL SBDB">{{cite sbdb|title=66063 (1998) RO1|id=2066063}}</ref><ref name="Johnston">{{cite web | url=http://www.johnstonsarchive.net/astro/astmoons/am-66063.html | title=(66063) 1998 RO1 | work=Johnston Archive | date=March 29, 2009 | accessdate=19 December 2013 | author=Johnston, Robert}}</ref>
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| |discoverer=[[LINEAR]]
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| |discovered=September 14, 1998
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| |discovery_site=''[[Socorro]]''
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| |alt_names=1999 SN<sub>5</sub>
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| |orbit_ref=<ref name="JPL SBDB" />
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| |epoch=November 4, 2013
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| |aphelion={{convert|1.7045|AU|Gm|abbr=on}}
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| |perihelion={{convert|0.2774|AU|Gm|abbr=on}}
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| |semimajor={{convert|0.9909|AU|Gm|abbr=on}}
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| |eccentricity=0.7201
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| |period=360.29 days
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| |avg_speed=
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| |inclination=22.676°
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| |asc_node=351.88°
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| |mean_anomaly=30.141°
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| |arg_peri=151.11°
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| |p_orbit_ref=<ref name="JPL SBDB" />
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| |p_mean_motion=0.9992
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| |satellites=1
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| |dimensions={{convert|712|m|ft|abbr=on}}<ref name="Abs Mag">Used absolute magnitude and albedo values for {{cite web | url=http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html | title=Conversion of Absolute Magnitude to Diameter for Minor Planets | publisher=Stephen F. Austin State University | accessdate=23 December 2013 | author=Bruton, Dan}}</ref>
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| |mass=5.976×10<sup>9</sup> [[Metric ton|mt]]<ref name="PHL"> Used mean density/albedo value for {{cite web | url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/calculators | title=Exoplanets Calculator | publisher=University of Puerto Rico | work=Planetary Habitability Laboratory | accessdate=20 December 2013}}</ref>
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| |density=2.8±1.3 g/cm³<ref name="Lightcurves">{{cite journal | url=http://www.sciencedirect.com/science/article/pii/S0019103508004193 | title=Modeling of Lightcurves of Binary Asteroids | journal=The Icarus Journal |date=April 2009| volume=200 | issue=2 | pages=531-547 | doi=10.1016/j.icarus.2008.12.001}}</ref>
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| |surface_grav=0.0624 mm/s<sup>2</sup><ref name="PHL" />
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| |escape_velocity=0.0999 mm/s<ref name="PHL" />
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| |sidereal_day=2.4924 hours<ref name="JPL SBDB" />
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| |axial_tilt=
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| |pole_ecliptic_lat=
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| |pole_ecliptic_lon=
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| |albedo=0.2<ref name="Johnston" />
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| |single_temperature=202-500 K (-71-227°C)<ref name="PHL" />
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| |spectral_type=
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| |abs_magnitude=18.1<ref name="JPL SBDB" />
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| }}
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| '''(66063) 1998 RO<sub>1</sub>''' is an [[Aten asteroid]] with a very eccentric orbit that was discovered September 14, 1998 by the [[LINEAR]] program.<ref name="JPL SBDB" /><ref name="Johnston" /> It is known to have a [[Minor-planet moon|moon]], S/2001 (66063) 1.
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| ==Interaction with Earth==
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| 1998 RO<sub>1</sub>'s orbit is very eccentric, with an aphelion beyond the orbit of [[Mars]] and a perihelion inside the orbit of [[Mercury]].<ref name="Johnston" /> However, with its orbital period of 360.29 days (0.99 years), 1998 RO<sub>1</sub> is in a [[Quasi-satellite|1:1 resonance]] with [[Earth]]. The asteroid does make close approaches to Earth,<ref name="JPL SBDB" /> but this orbital resonance means that it will not pose a real threat to Earth in millions, or perhaps [[Timeline of the far future|billions of years]]. On the other hand, 1998 RO<sub>1</sub> makes closer approaches to the other inner planets, especially Mars. Its closest approach to a planet, past or future, was to Mars, as it passed {{convert|0.008985|AU|km|abbr=on}} on March 19, 1964.<ref name="JPL SBDB" />
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| ==Moon==
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| [[File:Orbit2.gif|thumb|left|100 px|S/2001 (66063) 1 orbits 1998 RO<sub>1</sub> in a manner very similar to this. The red cross is the center of mass.]]
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| 1998 RO<sub>1</sub> has one moon, S/2001 (66063) 1.<ref name="Johnston" /> This moon was discovered from lightcurve observations going from September 13-28, 2013, and was confirmed by radar observations from the [[Arecibo Observatory]] one year later.<ref name="Johnston" /><ref name="Echo">{{cite web | url=http://echo.jpl.nasa.gov/~lance/binary.neas.html | title=BINARY AND TERNARY NEAR-EARTH ASTEROIDS DETECTED BY RADAR | publisher=Jet Propulsion Laboratory | date=November 28, 2013 | accessdate=30 December 2013 | author=Benner, Lance}}</ref> It is in a very close orbit to 1998 RO<sub>1</sub>, with a semi-major axis of {{convert|800|m|ft|abbr=on}} and an eccentricity of 0.06,<ref name="Johnston" /><ref name="Lightcurves" /> giving it a periapsis of {{convert|752|m|ft|abbr=on}} and an apoapsis of {{convert|848|m|ft|abbr=on}}. S/2001 (66063) 1 takes 14.54 hours to complete one orbit around 1998 RO<sub>1</sub>.<ref name="Lightcurves" /> From the surface of 1998 RO<sub>1</sub>, S/2001 (66063) 1 would have an apparent diameter of roughly 41°.<ref group="lower-alpha">Calculated by solving <math> \scriptstyle{\mathrm{tan}\left(\frac{\theta}{2}\right) = \frac{\mathrm{radius~of~moon}}{\mathrm{distance~from~surface~of~asteroid~to~center~of~moon}}}</math>.</ref> For comparison, the [[Sun]] appears to be 0.5° from [[Earth]].
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| {{clear|left}}
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| ==Notes==
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| {{notelist}}
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| ==References==
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| {{reflist}}
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| {{Minor planets navigator|(66062) 1998 RG1|(66064) 1998 RW4}}
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| {{DEFAULTSORT:1998 RO1}}
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| [[Category:Astronomical objects discovered in 1998]]
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| [[Category:Near-Earth asteroids]]
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| [[Category:Binary asteroids]]
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| [[Category:Aten asteroids]]
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| [[Category:Asteroids]]
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Petroleum Engineer Odis from Lively, has hobbies and interests for example bmx, Largest property Developers in singapore developers in singapore and writing. Plans to quit work and take the family to numerous noteworthy heritage listed locales on the planet like Central Sikhote-Alin.