(671294) 2014 JO25

Near-Earth asteroid discovered in 2014 yes (671294) 2014 JO 25 #FFC2E0 PIA21597 - New Radar Images of Asteroid 2014 JO25 (cropped).gif Radar image of 2014 JO 25 taken at Goldstone on 19 Apr 2017 Mount Lemmon Srvy. Mount Lemmon Obs.(first observation only) 5 May 2014 (671294) 2014 JO 25 NEOApolloPHA 23 March 2018 (JD 2458200.5) 0 6.02 yr (2,200 days) 3.8996 AU 0.2364 AU 2.0680 AU 0.8857 2.97 yr (1,086 days) 125.06° 0.3314 ms / day 25.261° 30.637° 49.571° 0.0110 AU (4.3 LD) 0.0210 AU 0.0412 AU 0.72 km (est. at 0.20)0.818 km (calculated) 4.531 h 0.20 (assumed) S (assumed) 17.8 (671294) 2014 JO 25 is a near-Earth asteroid. It was discovered in May 2014 by astronomers at the Catalina Sky Survey near Tucson, Arizona - a project of NASA's NEO (Near Earth Object) Observations Program in collaboration with the University of Arizona. Orbit and classification 2014 JO 25 belongs to the Apollo asteroids, which cross the orbit of Earth. Apollos are the largest group of near-Earth objects with nearly 10 thousand known members. It is also a potentially hazardous asteroid due to its sufficiently large size, variously estimated as 650 to 870 m us off wide, an absolute magnitude brighter than 22, and the closest distance between its orbit and Earth's. It orbits the Sun at a distance of 0.25–3.90 AU once every 3 years (1,086 days; semi-major axis of 2.07 AU). Its orbit has an eccentricity of 0.89 and an inclination of 25° with respect to the ecliptic. This makes it also a Venus- and Mercury-crossing asteroid. The body's observation arc begins with a precovery taken by Pan-STARRS in May 2011, or 3 years prior to its official first observation at Mount Lemmon. Close approaches This asteroid has a minimum orbital intersection distance (MOID) with Earth of 0.0110 AU km mi on off 3 flip, which translates into 4.3 lunar distances. 2017 Earth flyby 2014 JO 25 made a close flyby of Earth on 19 April 2017, and at its closest approach on that date came within 1.8 million kilometers (1.1 million miles) of the planet. It reached an apparent magnitude of 10.76. The 2017 flyby within a distance of 1.8 million kilometers was the closest approach to Earth by 2014 JO 25 for at least the next 400 years.http://earthsky.org/astronomy-essentials/large-asteroid-2014-jo25-close-april-19-2017-how-to-see Asteroid 2014 JO25 bigger than expected Astronomy Essentials EarthSky 19 April 2017 Physical characteristics 2014 JO 25 is a peanut-shaped contact binary asteroid. It is an assumed to be a stony S-type asteroid. The overall shape of the asteroid also resembles the "rubber ducky shaped" nucleus of Comet 67P/Churyumov-Gerasimenko.Initial Results from the Close Approach of Asteroid 2014 JO25 https://cneos.jpl.nasa.gov/news/news196.html 2022-04-01 cneos.jpl.nasa.gov2022-03-31 Astronomers launch new asteroid-classification system based on animal sizes https://physicsworld.com/astronomers-launch-new-asteroid-classification-system-based-on-animal-sizes/ 2022-04-01 Physics World en-GB Diameter and albedo Early estimation based on observed absolute magnitude and estimated albedo indicates object 600–1400 meters (m) in diameter. In 2014, further research based on NEOWISE data indicated an object of 650 m in diameter and albedo 0.25.https://echo.jpl.nasa.gov/asteroids/2014JO25/2014JO25_planning.html 2014 JO25 and 2003 BD44 Based on a generic magnitude-to-diameter conversion, 2014 JO 25 measures approximately 720 m in diameter, using an absolute magnitude of 18.1 and assuming an albedo of 0.20, which is typical for stony asteroids. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 818 meters based on an absolute magnitude of 17.8. Observation of the asteroid with the Goldstone Solar System Radar were performed between April 15 and 21, 2017 by Arecibo Observatory and Goldstone Solar System Radar. Results show that the largest dimension of this contact binary is at least 870 meters. Rotation period The 2017 radiometric observations at Arecibo and Goldstone also gave a rotation period of approximately 4.5 hours. Also in April 2017, a rotational lightcurve of this asteroid was obtained from photometric observations by Brian Warner at the Palmer Divide Station (U82) in California. Lightcurve analysis gave a refined period of 4.531 hours with a brightness amplitude between 0.14 and 0.64 magnitude (U=n.a.). Numbering and naming This minor planet was numbered by the Minor Planet Center on 22 March 2024 (M.P.C. 172656). October 2025, it has not been named. Gallery Radar images of the asteroid were taken on 18 April 2017 by the Goldstone Solar System Radar: In context 2014 JO 25 on a graph plotting the closest flyby distance to Earth and size of NEOs in 2017. left|750px|thumb|2014 JO 25 is located in the upper right of the chart. References 30em 2017-05-24 last obs. JPL Small-Body Database Browser: (2014 JO25) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3670721;cad=1 Jet Propulsion Laboratory 21 February 2018 2014 JO25 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2014+JO25 21 February 2018 Warner Brian D. October 2017 Lightcurve Analysis of Two Near-Earth Asteroids: 2010 VB1 and 2014 JO25 The Minor Planet Bulletin 44 4 327–330 32455408 7243874 1052-8091 2017MPBu...44..327W 2014 JO25 21 February 2018 Asteroid Size Estimator CNEOS NASA/JPL https://cneos.jpl.nasa.gov/tools/ast_size_est.html 21 February 2018 Planetary Radar Science Group National Astronomy and Ionosphere Center (NAIC) http://www.naic.edu/~pradar/press/2014JO25.php 21 February 2018 28 April 2017 https://web.archive.org/web/20170428142551/http://www.naic.edu/~pradar/press/2014JO25.php dead MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 22 April 2024 External links Asteroid to Fly Safely Past Earth on April 19, NASA news PIA21597: New Radar Images of Asteroid 2014 JO25, NASA/JPL, Photojournal 2014 J025 Earth Flyby Trajectory Animation See A Potentially Hazardous Asteroid Zip By Earth Wednesday Bob King, April 17, 2017 The Face Of Earth-Approacher 2014 JO25 Bob King, April 19, 2017 Asteroid 2014 JO25 Echoes Back Its Secrets Bob King, May 16, 2017 NASA captures images of large asteroid flying by Earth https://web.archive.org/web/20170421000836/http://q13fox.com/2017/04/20/nasa-captures-images-of-large-asteroid-flying-by-earth/ 2017-04-21 FOX News, 20 April 2017 2014+JO25 2014JO25 20671294 671294 (671294) 2014 JO 25 Category:Apollo asteroids Category:Contact binary (small Solar System body) Category:Potentially hazardous asteroids 20170419 Category:Minor planets discovered in 2014