2004 XP14

2004 XP₁₄

2004 XP14 seen on 3 July 2006
Discovery
Discovered by	LINEAR
Discovery date	10 December 2004
Designations
Minor planet category	NEO · Apollo · PHA
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	1007 days (2.76 yr)
|{{{apsis}}}|helion}}	1.21822 astronomical unit|AU (182.243 Gm)
|{{{apsis}}}|helion}}	0.884900 AU (132.3792 Gm)
Semi-major axis	1.05156 AU (157.311 Gm)
Eccentricity	0.158488
Orbital period	1.08 yr (393.87 d)
Mean anomaly	10.1555°
Mean motion	0° 54m 50.45s /day
Inclination	32.9505°
Longitude of ascending node	281.045°
|{{{apsis}}}|helion}}	273.695°
Earth MOID	0.00316799 AU (473,925 km)
Physical characteristics
Mean diameter	260 m[2] 300–800 m[3]
Rotation period	100 h (4.2 d)[1]
Absolute magnitude (H)	19.4[1]

2004 XP₁₄ is a sub-kilometer asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group. It was first observed by the LINEAR project on 10 December 2004.

Description

Although initially there were concerns that it might possibly impact Earth later in the 21st century and thus merit special monitoring, further analysis of its orbit has since ruled out any such collision, at least in the foreseeable future.

The size of 2004 XP₁₄ is not precisely known. Based on optical measurements, the object is between 300 and 800 meters in diameter.^[1] Radar observations place a lower bound of about 260 meters (850 ft).^[2]

2004 XP₁₄'s closest pass by Earth was above the west coast of North America at 04:25 UTC on 3 July 2006.^[1]

The asteroid's distance from Earth's center of mass at that moment was 0.0028906 astronomical unit|AU (432,430 km; 268,700 mi),^[1] or just 1.1 times the Moon's average distance from Earth. It was observed immediately after this close approach by radar from three locations, from Goldstone in the Mojave Desert in the US, from Sicily, and from Yevpatoria RT-70 radio telescope, Ukraine , as well as optically from other observatories^[4] and amateurs.

It was removed from the Sentry Risk Table on 17 March 2005.^[5]

References

External links

• NASA's Asteroid Radar Group
• Asteroid may pose danger to Earth
• Close pass by space rock
• Sormano Astronomical Observatory: Minor Body Priority List
• Minimum Orbital Intersection Distance
• Closest Approaches to the Earth by Minor Planets
• 2004 XP14 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
• 2004 XP14 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical Properties · Summary
• 2004 XP14 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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