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Contents

   



(Top)
 


1 Orbit and classification  



1.1  2018 approach  







2 Physical characteristics  





3 Numbering and naming  





4 See also  





5 References  





6 External links  














2018 BD






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2018 BD
Orbit before and after 1/18/2018 flyby
Discovery[1]
Discovered byCSS
Discovery siteMount Lemmon Obs.
Discovery date18 January 2018
(first observed only)
Designations

MPC designation

2018 BD

Minor planet category

NEO · Apollo[1][2]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter7
Observation arc1 day
Aphelion1.3555 AU
Perihelion0.7508 AU

Semi-major axis

1.0531 AU
Eccentricity0.2871

Orbital period (sidereal)

1.08 yr (395 days)

Mean anomaly

357.05°

Mean motion

0° 54m 43.2s / day
Inclination2.4082°

Longitude of ascending node

298.10°

Argument of perihelion

273.70°
Earth MOID6.019×10−6AU
(0.00234 LD)
Physical characteristics

Mean diameter

m (est. at 0.35)[3]
m (est. at 0.05)[3]

Absolute magnitude (H)

30.154[2]

2018 BD is a small asteroid and near-Earth object of the Apollo group, approximately 2–6 meters (7–20 ft) in diameter. It was first observed on 18 January 2018, by astronomers of the Catalina Sky SurveyatMount Lemmon Observatory, Arizona, United States,[1] just hours before passing about 0.10 lunar distances from the Earth.[2]

Orbit and classification[edit]

2018 BD is an Apollo asteroid. It orbits the Sun at a distance of 0.75–1.36 AU once every 13 months (395 days; semi-major axis of 1.05 AU). Its orbit has an eccentricity of 0.29 and an inclination of 2° with respect to the ecliptic.[2]

The object has an exceptionally low minimum orbital intersection distance with Earth of 900 km; 560 mi (0.000006019 AU), or 0.002 lunar distances.[2]

2018 approach[edit]

2018 BD passing near geosynchronous orbit
The object's motion across the sky in 15 minutes intervals west to east

Physical characteristics[edit]

Based on a generic magnitude-to-diameter conversion, 2018 BD measures between 2 and 6 meters in diameter, for an absolute magnitude of 30.154, and an assumed albedo between 0.05 and 0.20, which represent typical values for carbonaceous and a bright E-type asteroids, respectively.[3] As of 2018, no rotational light curve of this object has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2]

Numbering and naming[edit]

This minor planet has neither been numbered nor named.[1]

See also[edit]

References[edit]

  1. ^ a b c d "2018 BD". Minor Planet Center. Retrieved 22 February 2018.
  • ^ a b c d e f g "JPL Small-Body Database Browser: (2018 BD)" (2018-01-18 last obs.). Jet Propulsion Laboratory. Retrieved 22 February 2018.
  • ^ a b c "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 22 February 2018.
  • External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=2018_BD&oldid=1195681233"

    Categories: 
    Apollo asteroids
    Minor planet object articles (unnumbered)
    Discoveries by the Catalina Sky Survey
    Near-Earth objects in 2018
    Astronomical objects discovered in 2018
    Hidden categories: 
    Use dmy dates from February 2018
    JPL Small-Body Database ID same as Wikidata
    Articles with JPL SBDB identifiers
     



    This page was last edited on 14 January 2024, at 21:34 (UTC).

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