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{{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 =
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'''{{mp|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" /> '''{{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" />


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


{{DEFAULTSORT:2003 SM84}} {{DEFAULTSORT:2003 SM84}}
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Revision as of 23:48, 7 April 2022

(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.

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.

Orbit and classification

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.

Numbering and naming

As of 2020, this minor planet has neither been numbered nor named.

Physical characteristics

The object's spectral type remains unknown.

Diameter and albedo

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.

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

Minor planets navigator
Small Solar System bodies
Minor planets
Asteroid
Distant minor planet
Comets
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Categories: