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⚫ {{Use dmy dates|date=February 2018}}
{{DISPLAYTITLE:{{mp|2003 SM|84}}}} {{DISPLAYTITLE:{{mp|612600|2003 SM|84}}}}
{{Infobox planet {{Infobox planet
| minorplanet = yes | minorplanet = yes
| name = {{mp|2003 SM|84}} | name = {{mp|(612600) 2003 SM|84}}
| background = #FFC2E0 | background = #FFC2E0
| image = | image =
| image_size = | image_size =
| caption = | caption =
| discovery_ref = &thinsp;<ref name="jpldata" /> | discovery_ref = <ref name="MPC-object" />
| discoverer = | discoverer = ]
| discovery_site = | discovery_site = ]
| discovered = | discovered = 20 September 2003<br />{{small|(first observed only)}}
| mpc_name = {{mp|2003 SM|84}} | mpc_name = {{mp|2003 SM|84}}
| alt_names = | alt_names =
| pronounced = | pronounced =
| named_after = | named_after =
| mp_category = ]{{·}}] | mp_category = ]{{·}}]<ref name="MPC-object" /><ref name="jpldata" />
| orbit_ref = &thinsp;<ref name="jpldata" /> | orbit_ref = <ref name="jpldata" />
| epoch = 4 September 2017 (] 2458000.5) | epoch = 27 April 2019 (] 2458600.5)
| uncertainty = 1 | uncertainty = 1
| observation_arc = 12.21 yr (4,459 days) | observation_arc = 12.21 ] (4,459 d)
| aphelion = 1.2176 ] | aphelion = 1.2176 ]
| perihelion = 1.0332 AU | perihelion = 1.0331 AU
| semimajor = 1.1254 AU | semimajor = 1.1254 AU
| eccentricity = 0.0819 | eccentricity = 0.0819
| period = 1.19 ] (436 days) | period = 1.19 yr (436 d)
| mean_anomaly = 322.32] | mean_anomaly = 97.681]
| mean_motion = {{Deg2DMS|0.8256|sup=ms}} / day | mean_motion = {{Deg2DMS|0.8256|sup=ms}} / day
| inclination = 2.7956° | inclination = 2.7956°
| asc_node = 186.68° | asc_node = 186.68°
| arg_peri = 87.373° | arg_peri = 87.374°
| moid = 0.0520 AU{{·}}20.3 ] | moid = 0.0516 AU<br />(20.1022 ])
| mean_diameter = {{val|86|ul=m}} {{small|(est. at ])}}<ref name="h" /><br />{{val|160|ul=m}} {{small|(est. at ])}}<ref name="h" />
| dimensions =
| rotation = | rotation =
| albedo = | albedo =
| spectral_type = | spectral_type =
| abs_magnitude = 22.7 | abs_magnitude = 22.7<ref name="jpldata" />
}} }}


'''{{mp|2003 SM|84}}''' is a sub-kilometer ], classified as ] of the ] orbiting between ] and ]. It was discovered in 2003. Its size and physical properties are uncertain. Its designated as an ] because it . '''{{mp|(612600) 2003 SM|84}}''' is a sub-kilometer ], classified as ] of the ] orbiting between ] and ]. It was first observed by the ] (LINEAR) at the ] on 20 September 2003.<ref name="MPC-object" /> As of 2020, this ] has neither been nor ].<ref name="MPC-object" />


{{mp|2003 SM|84}} is an ] – a subgroup of near-Earth asteroids that approach the orbit of Earth from beyond, but do not cross it. It orbits the Sun at a distance of 1.0–1.2&nbsp;] once every 14 months (436 days; ] of 1.13&nbsp;AU). Its orbit has an ] of 0.08 and an ] of 3] with respect to the ].<ref name="jpldata" /> The body's ] begins with its first observation by LINEAR in 2003.<ref name="MPC-object" />
{{mp|2003 SM|84}} is being considered by the ] as a candidate target for the ] mission to study the effects of impacting a spacecraft into an asteroid.{{Citation needed|date=January 2016}}

The object's ] remains unknown.<ref name="jpldata" /> Using a magnitude-to-diameter conversion, {{mp|2003 SM|84}} measures 86 and 160 meters in diameter, based on an ] of 22.7 and an assumed ] of 0.20 (]) and 0.057 (]), respectively.<ref name="h" /> {{mp|2003 SM|84}} was being considered by the ] as a candidate target for the '']'' mission to study the effects of impacting a spacecraft into an asteroid.<ref name="universetoday" />


== References == == References ==
Line 46: Line 49:


<ref name="jpldata">{{cite web <ref name="jpldata">{{cite web
|type=2009-09-18 last obs |type = 2015-12-05 last obs.
|title=JPL Small-Body Database Browser: (2003 SM84) |title = JPL Small-Body Database Browser: (2003 SM84)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003SM84 |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3160738
|archive-url = https://web.archive.org/web/20200902071049/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3160738
⚫ |accessdate=11 April 2016}}</ref>
|url-status = dead
|archive-date = 2 September 2020
|publisher = ]
⚫ |accessdate = 20 December 2019}}</ref>

<ref name="MPC-object">{{cite web
|title = 2003 SM84
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2003+SM84
|accessdate = 20 December 2019}}</ref>

<ref name="universetoday">{{cite web
|title = Astronomy Without A Telescope – Impact Mitigation
|first = Steve |last = Nerlich
|date = 13 August 2011
|website = www.universetoday
|url = https://www.universetoday.com/88145/astronomy-without-a-telescope-impact-mitigation/
|accessdate = 20 December 2019}}</ref>

<ref name="h">{{cite web
|title = Asteroid Size Estimator
|publisher = CNEOS NASA/JPL
|url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html
|accessdate = 20 December 2019}}</ref>


}} <!-- end of reflist --> }} <!-- end of reflist -->
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== External links == == External links ==
* *
* {{NeoDys|2003SM84}}
* {{JPL Small Body}} * {{JPL Small Body}}


⚫ {{Minor planets navigator | |number=612600 |PageName={{mp|(612600) 2003 SM|84}} | }}
⚫ {{Use dmy dates|date=February 2018}}
⚫ <!--use upon numbering: {{Minor planets navigator | |number=? |PageName={{mp|(?) 2003 SM|84}} | }} -->
{{Small Solar System bodies}} {{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:2003 SM84}} {{DEFAULTSORT:2003 SM84}}
] ]
] ]
] ]


{{NE-asteroid-stub}}

Latest revision as of 21:12, 4 November 2024

(612600) 2003 SM84
Discovery
Discovered byLINEAR
Discovery siteLincoln Laboratory ETS
Discovery date20 September 2003
(first observed only)
Designations
MPC designation2003 SM84
Minor planet categoryNEO · Amor
Orbital characteristics
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 1
Observation arc12.21 yr (4,459 d)
Aphelion1.2176 AU
Perihelion1.0331 AU
Semi-major axis1.1254 AU
Eccentricity0.0819
Orbital period (sidereal)1.19 yr (436 d)
Mean anomaly97.681°
Mean motion0° 49 32.16 / day
Inclination2.7956°
Longitude of ascending node186.68°
Argument of perihelion87.374°
Earth MOID0.0516 AU
(20.1022 LD)
Physical characteristics
Mean diameter86 m (est. at 0.20)
160 m (est. at 0.057)
Absolute magnitude (H)22.7

(612600) 2003 SM84 is a sub-kilometer asteroid, classified as near-Earth object of the Amor group orbiting between Earth and Mars. It was first observed by the Lincoln Near-Earth Asteroid Research (LINEAR) at the Lincoln Laboratory ETS on 20 September 2003. As of 2020, this minor planet has neither been nor named.

2003 SM84 is an Amor asteroid – a subgroup of near-Earth asteroids that approach the orbit of Earth from beyond, but do not cross it. It orbits the Sun at a distance of 1.0–1.2 AU once every 14 months (436 days; semi-major axis of 1.13 AU). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. The body's observation arc begins with its first observation by LINEAR in 2003.

The object's spectral type remains unknown. Using a magnitude-to-diameter conversion, 2003 SM84 measures 86 and 160 meters in diameter, based on an absolute magnitude of 22.7 and an assumed albedo of 0.20 (S-type) and 0.057 (C-type), respectively. 2003 SM84 was being considered by the European Space Agency as a candidate target for the Don Quijote mission to study the effects of impacting a spacecraft into an asteroid.

References

  1. ^ "2003 SM84". Minor Planet Center. Retrieved 20 December 2019.
  2. ^ "JPL Small-Body Database Browser: (2003 SM84)" (2015-12-05 last obs.). Jet Propulsion Laboratory. Archived from the original on 2 September 2020. Retrieved 20 December 2019.
  3. ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 20 December 2019.
  4. Nerlich, Steve (13 August 2011). "Astronomy Without A Telescope – Impact Mitigation". www.universetoday. Retrieved 20 December 2019.

External links

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Small Solar System bodies
Minor planets
Asteroid
Distant minor planet
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