(454101) 2013 BP73, provisional designation 2013 BP73, is a sub-kilometer asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 310 meters (1,020 ft) in diameter.[3]
| Discovery[1][2] | |
|---|---|
| Discovered by | Mount Lemmon Srvy. |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 22 January 2013 |
| Designations | |
| (454101) 2013 BP73 | |
| 2013 BP73 | |
| NEO · Apollo · PHA[1][3] | |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 12.72 yr (4,645 days) |
| Aphelion | 2.1631 AU |
| Perihelion | 0.4931 AU |
| 1.3281 AU | |
| Eccentricity | 0.6287 |
| 1.53 yr (559 days) | |
| 218.36° | |
| 0° 38m 38.4s / day | |
| Inclination | 6.8507° |
| 80.062° | |
| 251.84° | |
| Earth MOID | 0.0021 AU (0.82 LD) |
| Physical characteristics | |
| 0.31 km (estimate)[4] | |
| Mass | 4.0×1010 kg (assumed)[4] |
| 20.4[3] | |
Description
editFrom discovery until August 2013 when Sentry updated to planetary ephemeris (DE431), it had the 4th highest impact threat on the Palermo Technical Impact Hazard Scale.[5] It was discovered on 22 January 2013 by the Mount Lemmon Survey at an apparent magnitude of 21 using a 1.5-meter (59 in) reflecting telescope.[2] It has an estimated diameter of 310 meters (1,020 ft).[4] Six Precovery images from April 2003 have been located.[6] It was removed from the Sentry Risk Table on 3 January 2014.[7]
It has an observation arc of 10 years with an uncertainty parameter of 2.[3] Perturbations by Earth, Venus, and Mercury will increase the orbital uncertainty over time.[8] When the asteroid only had an observation arc of 52 days, virtual clones of the asteroid that fit the uncertainty region in the known trajectory showed a 1 in 588,000 chance that the asteroid could impact Earth on 11 December 2096.[4] With a 2096 Palermo Technical Scale of −3.42,[4] the odds of impact by 2013 BP73 in 2096 were about 2630 times less[9] than the background hazard level of Earth impacts which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact.[10] Using the nominal orbit, JPL Horizons shows that the asteroid will be 0.9 AU (130,000,000 km; 84,000,000 mi) from Earth on 11 December 2096.[11] 2013 BP73 will make a close approach to Earth on 17 December 2018 that should allow a refinement to the known trajectory.[8]
Numbering and naming
editThis minor planet was numbered by the Minor Planet Center on 25 December 2015 (M.P.C. 97517).[12] As of 2018, it has not been named.[1]
References
edit- ^ a b c "454101 (2013 BP73)". Minor Planet Center. Retrieved 27 February 2018.
- ^ a b "MPEC 2013-B98 : 2011 BP73". IAU Minor Planet Center. 31 January 2013. Retrieved 28 July 2013. (K13B73P)
- ^ a b c d e "JPL Small-Body Database Browser: 454101 (2013 BP73)" (2015-12-19 last obs.). Jet Propulsion Laboratory. Retrieved 27 February 2018.
- ^ a b c d e "Earth Impact Risk Summary: 2013 BP73". Wayback Machine: NASA/JPL Near-Earth Object Program Office. Archived from the original on 9 October 2013. Retrieved 28 July 2013.
- ^ "Sentry Risk Table". Wayback Machine: NASA/JPL Near-Earth Object Program Office. 29 May 2013. Archived from the original on 29 May 2013. Retrieved 11 August 2013.
- ^ "Orbit 2013 BP73". IAU Minor Planet Center. Retrieved 23 January 2014.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002. Retrieved 23 January 2014.
- ^ a b "JPL Close-Approach Data: (2013 BP73)" (last observation: 2013-04-12; arc: 10 years). Retrieved 23 January 2014.
- ^ Math: 103.42 = 2630
- ^ "The Palermo Technical Impact Hazard Scale". NASA/JPL Near-Earth Object Program Office. 31 August 2005. Archived from the original on 21 March 2002. Retrieved 28 July 2013.
- ^ Horizons output. "Horizon Online Ephemeris System". Retrieved 28 July 2013. (Geocentric Solution)
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 February 2018.
External links
edit- List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center
- PHA Close Approaches To The Earth, Minor Planet Center
- List Of Apollo Minor Planets (by designation), Minor Planet Center
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- (454101) 2013 BP73 at NeoDyS-2, Near Earth Objects—Dynamic Site
- (454101) 2013 BP73 at ESA–space situational awareness
- (454101) 2013 BP73 at the JPL Small-Body Database
