2018 BD
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 Survey at Mount Lemmon Observatory, Arizona, United States,[1] just hours before passing about 0.10 lunar distances from the Earth.[2]
Orbit and classification
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
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/75/2018_BD_flyby.png/245px-2018_BD_flyby.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/60/2018_BD-skyview.png/290px-2018_BD-skyview.png)
Physical characteristics
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
This minor planet has neither been numbered nor named.[1]
See also
References
- ^ 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
- Flyby diagram of 2018 BD, Minor Planet Center
- Asteroid 2018 BD missed Earth by just 0.10 LD on January 18, The Watchers, 18 January 2018
- A new asteroid was discovered just seven hours before cruising past Earth, BGR.com, 19 January 2018
- 2018 BD at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
- 2018 BD at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
- v
- t
- e
- « 20172019 »
launches
![Space probes launched in 2018](http://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png)
- TESS (lunar flyby; Apr 2018)
- Queqiao (mission to the Moon; May 2018)
- InSight / Mars Cube One (mission to Mars; May 2018)
- Parker Solar Probe (solar space mission; Aug 2018)
- BepiColombo (mission to Mercury; Oct 2018)
- Chang'e 4 / Yutu-2 (mission to the Moon; Dec 2018)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/NASA-Icarus-MostDistantMainSequenceStar-20180402.jpg/150px-NASA-Icarus-MostDistantMainSequenceStar-20180402.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/PIA22876-InSight-FirstSelfie-20181211.jpg/150px-PIA22876-InSight-FirstSelfie-20181211.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Bennu_at_300_pixels_%28wide%29.png/150px-Bennu_at_300_pixels_%28wide%29.png)
- Asteroid close approaches
- 2010 WC9
- 2017 VR12
- 2017 YE5
- 2017 YZ1
- 2018 AH
- 2018 BD
- 2018 BF3
- 2018 CB
- 2018 CC
- (276033) 2002 AJ129
- (505657) 2014 SR339
- 2018 CF2
- 2018 CL
- 2018 CN2
- 2018 CY2
- 2018 DV1
- 2018 GE3
- 2018 PD20
- 2018 LF16
- 2018 WV1
- (163899) 2003 SD220
![Exoplanets discovered in 2018](http://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png)
- LSPM J0207+3331
- VVV-WIT-07
- MACS J1149 Lensed Star 1
- 10 moons of Jupiter
- 541132 Leleākūhonua (announced)
- Hyperion proto-supercluster
- 2MASS J18082002−5104378
- Farout (2018 VG18)
- FarFarOut (2018 AG37 first imaged)
- AT2018hyz
- SN 2018cow
- V357 Muscae (Nova Muscae)
- V906 Carinae (Nova Carinae)
- V392 Persei (Nova Persei)
![Comets in 2018](http://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/15px-Symbol_category_class.svg.png)
- C/2017 T1 (Heinze)
- C/2017 U7
- C/2018 C2 (Lemmon)
- 37P/Forbes
- 66P/du Toit
- 64P/Swift–Gehrels
- 38P/Stephan–Oterma
- C/2018 F4 (PanSTARRS)
- C/2018 V1 (Machholz-Fujikawa-Iwamoto)
- 46P/Wirtanen
- Hayabusa2 (asteroid Ryugu arrival; Jun 2018)
- Kepler retirement (Oct 2018)
- InSight (Mars landing; Oct 2018)
- Dawn retirement (Nov 2018)
- OSIRIS-REx (asteroid Bennu arrival; Dec 2018)
- Voyager 2 (enters interstellar space; Dec 2018)
- New Horizons (encounter with 486958 Arrokoth; Dec 2018 / Jan 2019)
Outer space portal
2017 in outer space — 2018 in outer space — 2019 in outer space